/* roulang page: index */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --bg-3:#16223A;
  --line:rgba(122,178,220,0.14);
  --line-strong:rgba(25,227,196,0.35);
  --text-1:#EAF2FF;
  --text-2:#A6B5CC;
  --text-3:#6B7C96;
  --primary:#19E3C4;
  --primary-deep:#0E9C88;
  --secondary:#5B6CFF;
  --accent:#FFB020;
  --danger:#FF6B6B;
  --grad-cta:linear-gradient(120deg,#19E3C4 0%,#4C7BFF 55%,#5B6CFF 100%);
  --radius-card:18px;
  --radius-narrow:14px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-1:0 16px 36px -20px rgba(0,0,0,.75);
  --shadow-2:0 24px 48px -20px rgba(0,0,0,.85);
  --glow:0 10px 28px -8px rgba(25,227,196,.45);
  --container:1180px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .22s ease;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.skip{position:absolute;left:-9999px;top:0;}
.skip:focus{left:16px;top:16px;z-index:999;background:var(--bg-2);padding:10px 16px;border-radius:8px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,24,.88);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary) 22%,var(--secondary) 68%,transparent);
  opacity:.75;
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--text-1);text-decoration:none;}
.logo:hover{text-decoration:none;}
.logo-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px 2px rgba(25,227,196,.75);flex:0 0 auto;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-top{font-size:16px;font-weight:800;letter-spacing:.02em;}
.logo-bottom{font-size:12px;color:var(--text-3);letter-spacing:.14em;}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-menu a{
  display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--text-2);position:relative;transition:.22s ease;
}
.nav-menu a:hover{color:var(--text-1);text-decoration:none;background:rgba(255,255,255,.04);}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px var(--primary);transform:scaleX(0);transition:transform .22s ease;
}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{background:rgba(25,227,196,.12);color:var(--primary);box-shadow:0 0 0 1px rgba(25,227,196,.28),0 0 18px -6px rgba(25,227,196,.7);}
.nav-menu a.active::after{transform:scaleX(0);}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-cta{height:38px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:42px;height:38px;border-radius:10px;background:var(--bg-2);
  border:1px solid var(--line);cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:.22s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.drawer{
  position:fixed;inset:68px 0 0 0;z-index:79;background:rgba(5,8,15,.96);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:28px 24px 120px;overflow-y:auto;transform:translateY(-8px);opacity:0;pointer-events:none;transition:.25s ease;
}
.drawer.open{transform:translateY(0);opacity:1;pointer-events:auto;}
.drawer a.drawer-link{
  display:flex;align-items:center;gap:14px;padding:16px 4px;border-bottom:1px solid var(--line);
  color:var(--text-1);font-size:17px;
}
.drawer a.drawer-link b{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;font-weight:600;}
.drawer a.drawer-link:hover{text-decoration:none;color:var(--primary);}
.drawer-foot{position:fixed;left:0;right:0;bottom:0;padding:16px 24px 24px;background:linear-gradient(180deg,rgba(5,8,15,0),rgba(5,8,15,.98) 40%);}
body.locked{overflow:hidden;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,filter .22s ease;
  white-space:nowrap;text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--grad-cta);color:#04121A;box-shadow:var(--glow);}
.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 16px 36px -8px rgba(25,227,196,.6);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1);}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(25,227,196,.08);transform:translateY(-1px);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{filter:saturate(.4);cursor:not-allowed;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px;}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.sec-title{display:flex;align-items:center;gap:12px;}
.sec-title::before{content:"";width:3px;height:18px;border-radius:2px;background:var(--primary);box-shadow:0 0 12px rgba(25,227,196,.8);flex:0 0 auto;}
.sec-title h2{font-size:32px;font-weight:700;letter-spacing:-.01em;line-height:1.25;}
.sec-head .rule{flex:1;height:1px;background:linear-gradient(90deg,var(--line),transparent);}
.sec-sub{margin-top:12px;font-size:15px;color:var(--text-2);max-width:720px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--primary);background:rgba(25,227,196,.1);
  border:1px solid var(--line-strong);white-space:nowrap;
}
.badge-accent{color:var(--accent);background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.4);}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero-bg::after{content:"";position:absolute;inset:0;background:rgba(5,8,15,.62);}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
}
.hero-orb{position:absolute;border-radius:50%;filter:blur(120px);}
.hero-orb-a{width:420px;height:420px;right:-80px;top:-100px;background:var(--primary);opacity:.12;}
.hero-orb-b{width:380px;height:380px;right:120px;bottom:-160px;background:var(--secondary);opacity:.12;}
.hero-inner{position:relative;z-index:2;padding:96px 0;min-height:620px;display:flex;align-items:center;}
.hero-cols{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;width:100%;}
.hero-tag{display:inline-flex;align-items:center;gap:8px;margin-bottom:20px;padding:6px 14px;border-radius:999px;background:rgba(25,227,196,.1);border:1px solid var(--line-strong);font-size:13px;color:var(--primary);}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px var(--primary);animation:breathe 2s ease-in-out infinite;}
@keyframes breathe{0%,100%{opacity:.6}50%{opacity:1}}
.hero h1{
  font-size:48px;font-weight:800;line-height:1.2;letter-spacing:-.01em;
}
.hero h1 em{font-style:normal;background:var(--grad-cta);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:520px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-trust{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:30px;font-size:13px;color:var(--text-3);}
.hero-trust span{display:inline-flex;align-items:center;gap:6px;}
.hero-trust i{width:4px;height:4px;border-radius:50%;background:var(--primary-deep);display:inline-block;}
.hero-trust .sep{width:1px;height:12px;background:var(--line);display:inline-block;}

.glass{
  position:relative;border-radius:20px;
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-2);
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(25,227,196,.4),transparent 70%);
}
.login-card{padding:32px 30px 28px;}
.login-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px;}
.login-head h2{font-size:20px;font-weight:700;}
.login-live{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px 2px rgba(25,227,196,.7);animation:breathe 2s ease-in-out infinite;}
.login-note{font-size:13px;color:var(--text-3);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;}
.field label .req{color:var(--primary);margin-left:4px;}
.field input{
  width:100%;height:46px;padding:0 14px;border-radius:var(--radius-input);
  background:var(--bg-1);border:1px solid var(--line);color:var(--text-1);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.field input::placeholder{color:var(--text-3);}
.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(25,227,196,.15);}
.login-links{display:flex;flex-direction:column;gap:8px;margin-top:18px;font-size:13px;}
.login-links a{color:var(--text-2);}
.login-links a:hover{color:var(--primary);}
.login-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:12px;color:var(--text-3);display:flex;align-items:center;gap:8px;}

/* ---------- services 2+1 ---------- */
.svc-grid{display:grid;grid-template-columns:7fr 5fr;gap:var(--gap);}
.card{
  position:relative;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:0 3px 3px 0;
  background:var(--primary);opacity:.85;transition:width .22s ease,opacity .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.card:hover::before{width:4px;opacity:1;box-shadow:0 0 14px rgba(25,227,196,.7);}
.card h3{font-size:22px;font-weight:600;margin-bottom:12px;}
.card p{font-size:15px;color:var(--text-2);}
.card .wk{margin-top:18px;}
.svc-large{display:flex;flex-direction:column;justify-content:space-between;min-height:330px;padding:36px;}
.svc-large .icn{margin-bottom:18px;color:var(--primary);}
.svc-large .wk-num{position:absolute;right:26px;bottom:6px;font-size:96px;font-weight:800;color:rgba(255,255,255,.035);line-height:1;font-variant-numeric:tabular-nums;pointer-events:none;}
.svc-side{display:grid;grid-template-rows:1fr 1fr;gap:var(--gap);}
.svc-side .card{min-height:153px;display:flex;flex-direction:column;justify-content:center;}
.svc-side .card h3{font-size:19px;}

/* ---------- stats ---------- */
.stats-band{
  background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stats{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:0 28px;position:relative;text-align:left;}
.stat + .stat::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:1px;background:var(--line);}
.stat-num{font-size:40px;font-weight:800;line-height:1.1;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.stat-num small{font-size:15px;font-weight:600;color:var(--text-2);margin-left:4px;}
.stat-label{margin-top:10px;font-size:14px;color:var(--text-2);}
.stats-more{margin-top:40px;}

/* ---------- cases ---------- */
.case-row{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;padding:40px 0;border-bottom:1px solid var(--line);}
.case-row:last-child{border-bottom:0;}
.case-media{position:relative;border-radius:var(--radius-narrow);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:var(--bg-3);}
.case-media img{width:100%;height:100%;object-fit:cover;}
.case-media .badge{position:absolute;left:14px;top:14px;}
.case-media::after{content:"";position:absolute;left:0;right:0;bottom:0;height:45%;background:linear-gradient(180deg,transparent,rgba(5,8,15,.7));}
.case-body h3{font-size:22px;font-weight:600;margin-bottom:14px;}
.case-body p{font-size:15px;color:var(--text-2);margin-bottom:14px;}
.case-body .wk{margin-top:8px;}
.case-row.reverse .case-media{order:2;}
.case-row.reverse .case-body{order:1;}
.case-row.reverse{position:relative;}
.case-row.reverse::before{content:"";position:absolute;left:calc(50% + 24px);top:40px;bottom:40px;width:1px;background:linear-gradient(180deg,transparent,var(--line-strong),transparent);}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);position:relative;}
.flow-grid::before{content:"";position:absolute;left:8%;right:8%;top:14px;height:1px;background:linear-gradient(90deg,var(--primary),var(--secondary) 55%,var(--line));}
.flow-step{position:relative;padding-top:48px;}
.flow-dot{position:absolute;left:0;top:7px;width:14px;height:14px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 5px rgba(25,227,196,.14),0 0 18px rgba(25,227,196,.8);}
.flow-num{font-size:40px;font-weight:800;color:rgba(25,227,196,.2);line-height:1;font-variant-numeric:tabular-nums;}
.flow-step h4{font-size:18px;font-weight:600;margin:10px 0 10px;}
.flow-step p{font-size:15px;color:var(--text-2);}
.flow-cta{margin-top:48px;}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.news-card{
  display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.news-cover{display:block;aspect-ratio:16/9;background:var(--bg-3);overflow:hidden;}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-body{display:flex;flex-direction:column;gap:12px;padding:22px;flex:1;}
.news-body .badge{align-self:flex-start;}
.news-title{font-size:18px;font-weight:600;line-height:1.5;}
.news-title a{color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a:hover{color:var(--primary);text-decoration:none;}
.news-sum{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);}
.news-meta time{font-variant-numeric:tabular-nums;}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:64px 24px;border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--bg-1);
  text-align:center;color:var(--text-2);
}
.empty-state svg{color:var(--text-3);}
.load-more{height:40px;display:flex;align-items:center;justify-content:center;margin-top:32px;}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{border-radius:16px;overflow:hidden;transition:border-color .22s ease;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .25s ease;}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-item[open]{border-color:var(--line-strong);}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--text-2);line-height:1.8;border-left:3px solid var(--primary);margin-left:0;}

/* ---------- form ---------- */
.contact-band{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;}
.contact-info h2{font-size:32px;font-weight:700;line-height:1.3;margin-bottom:16px;}
.contact-info p{font-size:15px;color:var(--text-2);margin-bottom:24px;}
.info-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--text-2);}
.info-list li svg{flex:0 0 auto;color:var(--primary);margin-top:3px;}
.form-panel{padding:32px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
textarea.input{
  width:100%;min-height:110px;padding:12px 14px;border-radius:var(--radius-input);
  background:var(--bg-1);border:1px solid var(--line);color:var(--text-1);resize:vertical;
  transition:border-color .22s ease,box-shadow .22s ease;
}
textarea.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(25,227,196,.15);}
.form-tip{font-size:12px;color:var(--danger);margin-top:6px;display:none;}
.field.has-error input,.field.has-error textarea{border-color:var(--danger);}
.field.has-error .form-tip{display:block;}
.form-success{display:none;align-items:center;gap:10px;margin-bottom:18px;padding-left:12px;border-left:3px solid var(--primary);font-size:14px;color:var(--text-1);}
.form-success.show{display:flex;}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-0);position:relative;padding:72px 0 0;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary) 25%,var(--secondary) 70%,transparent);opacity:.7;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:280px;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:var(--bg-2);
  display:flex;align-items:center;justify-content:center;color:var(--text-2);
}
.socials a:hover{color:var(--primary);border-color:var(--line-strong);text-decoration:none;transform:translateY(-2px);}
.footer-col h4{font-size:14px;color:var(--primary);font-weight:600;margin-bottom:16px;letter-spacing:.02em;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-contact li{font-size:14px;color:var(--text-2);margin-bottom:11px;display:flex;gap:10px;}
.footer-contact svg{flex:0 0 auto;margin-top:4px;color:var(--primary-deep);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--bg-2);border:1px solid var(--line-strong);color:var(--primary);
  display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:70;
  box-shadow:var(--glow);opacity:0;pointer-events:none;transition:.25s ease;
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-3px);}

/* ---------- responsive ---------- */
@media (min-width:1440px){
  :root{--container:1280px;}
  .hero-inner{min-height:660px;}
}
@media (max-width:1199px){
  :root{--container:960px;}
  .hero-cols{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:40px;}
  .hero-inner{min-height:auto;padding:80px 0;}
  .case-row{grid-template-columns:1fr;gap:28px;}
  .case-row.reverse .case-media{order:1;}
  .case-row.reverse .case-body{order:2;}
  .case-row.reverse::before{display:none;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .nav-right .nav-cta{display:none;}
  .section{padding:72px 0;}
  .sec-title h2{font-size:26px;}
  .svc-grid{grid-template-columns:1fr;}
  .svc-side{grid-template-rows:none;grid-template-columns:1fr 1fr;}
  .stats{grid-template-columns:repeat(2,1fr);gap:32px 0;}
  .stat{padding:0 20px;}
  .stat:nth-child(3)::before{display:none;}
  .flow-grid{grid-template-columns:1fr;gap:32px;}
  .flow-grid::before{left:6px;right:auto;top:10px;bottom:10px;width:1px;height:auto;background:linear-gradient(180deg,var(--primary),var(--secondary),var(--line));}
  .flow-step{padding-top:0;padding-left:38px;}
  .flow-dot{top:6px;}
  .contact-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:16px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;height:48px;}
  .sec-title h2{font-size:24px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
  .sec-head .rule{display:none;}
  .card{border-radius:16px;padding:24px;}
  .svc-large{padding:26px;}
  .svc-side{grid-template-columns:1fr;}
  .stats{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .stat-num{font-size:30px;}
  .news-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .form-panel{padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;text-align:left;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .case-media{aspect-ratio:16/9;}
  .login-card{padding:26px 22px;}
  .to-top{right:16px;bottom:16px;}
}

/* roulang page: article */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --bg-3:#16223A;
  --line:rgba(122,178,220,0.14);
  --line-strong:rgba(25,227,196,0.35);
  --text-1:#EAF2FF;
  --text-2:#A6B5CC;
  --text-3:#6B7C96;
  --primary:#19E3C4;
  --primary-deep:#0E9C88;
  --secondary:#5B6CFF;
  --accent:#FFB020;
  --danger:#FF6B6B;
  --grad-cta:linear-gradient(120deg,#19E3C4 0%,#4C7BFF 55%,#5B6CFF 100%);
  --radius-card:18px;
  --radius-narrow:14px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-badge:999px;
  --shadow-1:0 16px 36px -20px rgba(0,0,0,0.75);
  --shadow-2:0 24px 48px -20px rgba(0,0,0,0.85);
  --glow-primary:0 10px 28px -8px rgba(25,227,196,0.45);
  --font-sans:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0.005em;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .22s ease,opacity .22s ease}
a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-0.01em}
p{margin:0}
::selection{background:rgba(25,227,196,.28);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;text-decoration:none;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,filter .22s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--grad-cta);color:#04121A;box-shadow:var(--glow-primary)}
.btn-primary:hover{filter:brightness(1.1);box-shadow:0 14px 34px -8px rgba(25,227,196,.6);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.02);border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(25,227,196,.08);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.link-arrow span{transition:transform .22s ease}
.link-arrow:hover span{transform:translateX(4px)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(7,12,24,.88);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent 0%,rgba(25,227,196,.65) 28%,rgba(91,108,255,.6) 62%,transparent 100%);
  opacity:.75;pointer-events:none;
}
.header-inner{height:68px;display:flex;align-items:center;gap:24px;transition:height .25s ease}
.site-header.compact .header-inner{height:56px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);flex:0 0 auto}
.logo:hover{text-decoration:none;color:var(--text-1)}
.logo-dot{
  width:6px;height:6px;border-radius:50%;background:var(--primary);flex:0 0 auto;
  box-shadow:0 0 10px 2px rgba(25,227,196,.85);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-top{font-size:13px;font-weight:600;color:var(--text-2);letter-spacing:.06em}
.logo-bottom{font-size:17px;font-weight:800;color:var(--text-1);letter-spacing:.01em}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-menu a{
  position:relative;padding:9px 14px;border-radius:var(--radius-badge);
  font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:color .22s ease,background .22s ease,box-shadow .22s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;box-shadow:0 0 8px var(--primary);
}
.nav-menu a:hover{color:var(--text-1);background:rgba(255,255,255,.03);text-decoration:none}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{
  color:var(--primary);background:rgba(25,227,196,.12);
  box-shadow:0 0 18px -4px rgba(25,227,196,.55);
}
.nav-menu a.active::after{transform:scaleX(0)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text-1);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
body.drawer-open .nav-toggle span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
body.drawer-open .nav-toggle span:nth-child(2){opacity:0}
body.drawer-open .nav-toggle span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}
.mobile-drawer{
  position:fixed;inset:0;z-index:85;padding:88px 24px 110px;
  background:rgba(5,8,15,.96);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform .3s ease,opacity .3s ease;
  display:flex;flex-direction:column;justify-content:space-between;
}
body.drawer-open .mobile-drawer{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{
  display:flex;align-items:center;gap:14px;padding:16px 4px;
  font-size:17px;color:var(--text-2);border-bottom:1px solid var(--line);
}
.drawer-nav a .idx{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;min-width:22px}
.drawer-nav a.active{color:var(--primary)}
.drawer-cta{margin-top:24px}

/* ============ 面包屑 ============ */
.crumb-bar{padding:22px 0 0}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13.5px;color:var(--text-3)}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary);text-decoration:none}
.breadcrumb .sep{color:rgba(107,124,150,.6)}
.breadcrumb .current{
  color:var(--text-2);max-width:44ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 文章头 ============ */
.article-hero{padding:26px 0 0}
.article-head{max-width:820px}
.article-kicker{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  padding:5px 14px;border-radius:var(--radius-badge);
  font-size:12.5px;color:var(--primary);
  border:1px solid var(--line-strong);background:rgba(25,227,196,.1);
}
.article-title{
  font-size:40px;font-weight:800;line-height:1.24;letter-spacing:-0.015em;
  color:var(--text-1);margin-bottom:20px;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;font-size:13.5px;color:var(--text-3)}
.article-meta .vr{width:1px;height:13px;background:var(--line)}
.meta-accent{color:var(--accent);font-variant-numeric:tabular-nums}
.neon-divider{
  height:1px;margin:32px 0 0;border:0;
  background:linear-gradient(90deg,rgba(25,227,196,.75),rgba(91,108,255,.5) 45%,transparent 100%);
}

/* ============ 正文布局 ============ */
.article-section{padding:48px 0 96px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 240px;
  gap:56px;align-items:start;
}
.article-main{min-width:0;max-width:760px}
.article-side{position:sticky;top:96px}
.toc-card{
  padding:20px 18px;border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.08);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);
  position:relative;overflow:hidden;
}
.toc-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(25,227,196,.4),transparent);
}
.toc-title{font-size:14px;font-weight:600;color:var(--text-2);letter-spacing:.08em;margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:56vh;overflow:auto;border-left:1px solid var(--line)}
.toc-list a{
  display:block;padding:7px 0 7px 14px;font-size:13.5px;color:var(--text-3);
  border-left:2px solid transparent;margin-left:-1px;line-height:1.55;
}
.toc-list a:hover{color:var(--text-1);text-decoration:none}
.toc-list a.lv3{padding-left:26px;font-size:13px;opacity:.85}
.toc-list a.is-active{color:var(--primary);border-left-color:var(--primary);background:rgba(25,227,196,.06)}
.toc-mobile{display:none;margin-bottom:28px}
.toc-mobile details{
  border:1px solid var(--line);border-radius:var(--radius-narrow);
  background:var(--bg-2);overflow:hidden;
}
.toc-mobile summary{
  list-style:none;cursor:pointer;padding:14px 18px;
  display:flex;align-items:center;justify-content:space-between;
  font-size:14.5px;color:var(--text-2);
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"＋";color:var(--primary);font-size:15px}
.toc-mobile details[open] summary::after{content:"－"}
.toc-mobile .toc-list{padding:0 18px 14px}

/* ============ 正文排版 ============ */
.article-body{font-size:17px;line-height:1.9;color:var(--text-2)}
.article-body > * + *{margin-top:1.2em}
.article-body p{margin:0}
.article-body p + p{margin-top:1.2em}
.article-body h2{
  position:relative;padding-left:18px;margin:48px 0 18px;
  font-size:24px;font-weight:700;color:var(--text-1);line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:9px;width:3px;height:18px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(25,227,196,.65);
}
.article-body h3{margin:32px 0 12px;font-size:18px;font-weight:600;color:var(--primary)}
.article-body h4{margin:24px 0 10px;font-size:16.5px;font-weight:600;color:var(--text-1)}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body strong{color:var(--text-1);font-weight:600}
.article-body ul,.article-body ol{margin:1.1em 0;padding-left:0}
.article-body li{position:relative;padding-left:24px;margin:8px 0}
.article-body ul > li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;
  background:var(--primary);border-radius:2px;opacity:.8;
}
.article-body ol{counter-reset:olc}
.article-body ol > li{counter-increment:olc}
.article-body ol > li::before{
  content:counter(olc,decimal-leading-zero);
  position:absolute;left:0;top:0;font-size:13px;color:var(--primary);
  font-variant-numeric:tabular-nums;font-weight:700;
}
.article-body blockquote{
  margin:1.5em 0;padding:20px 22px;border-left:3px solid var(--primary);
  background:rgba(25,227,196,.06);border-radius:0 var(--radius-narrow) var(--radius-narrow) 0;
  color:var(--text-1);
}
.article-body blockquote p{margin:0}
.article-body img{
  width:100%;border-radius:14px;
  box-shadow:inset 0 0 0 1px var(--line);
  margin:1.4em 0;
  background:var(--bg-3);
}
.article-body figure{margin:1.4em 0}
.article-body figcaption{
  margin-top:10px;text-align:center;font-size:13px;color:var(--text-3);
}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-narrow);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line);text-align:left;vertical-align:top}
.article-body th{background:rgba(25,227,196,.07);color:var(--text-1);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03)}

/* ============ 标签 ============ */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px}
.tag-row .tag-label{font-size:13.5px;color:var(--text-3);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--radius-badge);
  font-size:12.5px;color:var(--primary);border:1px solid var(--line-strong);
  background:rgba(25,227,196,.1);transition:background .22s ease,transform .22s ease;
}
.tag:hover{text-decoration:none;background:rgba(25,227,196,.18);transform:translateY(-2px)}
.tag-accent{color:var(--accent);border-color:rgba(255,176,32,.4);background:rgba(255,176,32,.1)}

/* ============ 上一篇 / 下一篇 ============ */
.postnav-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:56px}
.postnav-card{
  display:block;padding:22px;border-radius:var(--radius-card);
  background:var(--bg-2);border:1px solid var(--line);
  box-shadow:var(--shadow-1);position:relative;overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.postnav-card::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:0 3px 3px 0;
  background:var(--primary);opacity:.85;
}
.postnav-card:hover{
  text-decoration:none;transform:translateY(-4px);
  border-color:var(--line-strong);box-shadow:var(--shadow-2);
}
.postnav-card.next::before{background:var(--secondary)}
.postnav-label{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:8px;letter-spacing:.06em}
.postnav-title{display:block;font-size:16px;font-weight:600;color:var(--text-1);line-height:1.6}
.postnav-card:hover .postnav-title{color:var(--primary)}

/* ============ 相关推荐 / 信息卡 ============ */
.block{margin-top:72px}
.block-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:26px}
.block-title{position:relative;padding-left:16px;font-size:26px;font-weight:700;color:var(--text-1)}
.block-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 12px rgba(25,227,196,.65);
}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.info-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-card);background:var(--bg-2);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.info-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-2)}
.info-cover{display:block;position:relative;aspect-ratio:16/9;background:var(--bg-3);overflow:hidden}
.info-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.info-card:hover .info-cover img{transform:scale(1.04)}
.info-body{display:flex;flex-direction:column;flex:1;gap:10px;padding:20px}
.info-title{font-size:17px;font-weight:600;line-height:1.55;color:var(--text-1)}
.info-title a{color:inherit;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.info-title a:hover{color:var(--primary);text-decoration:none}
.info-excerpt{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.info-meta time{font-variant-numeric:tabular-nums}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  margin-bottom:14px;border-radius:var(--radius-narrow);overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.08);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"＋";color:var(--primary);font-size:16px;transition:transform .25s ease;flex:0 0 auto;
}
.faq-item[open] summary::after{content:"－"}
.faq-item[open]{border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(25,227,196,.12) inset}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:0 3px 3px 0;
  background:var(--primary);box-shadow:0 0 12px rgba(25,227,196,.6);
}
.faq-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ============ 返回入口 ============ */
.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:56px}

/* ============ 空态 ============ */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  padding:72px 28px;text-align:center;
  border-radius:var(--radius-card);background:var(--bg-2);border:1px solid var(--line);
}
.empty-state svg{color:var(--text-3)}
.empty-state p{color:var(--text-2);font-size:15px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;background:var(--bg-0);position:relative;
  border-top:1px solid var(--line);padding:64px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,196,.6) 35%,rgba(91,108,255,.5) 70%,transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin:16px 0 18px;font-size:14px;color:var(--text-2);max-width:30ch}
.socials{display:flex;gap:10px}
.socials a{
  width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.02);
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.socials a:hover{color:var(--primary);border-color:var(--line-strong);transform:translateY(-2px);text-decoration:none}
.footer-col h4{font-size:14px;font-weight:600;color:var(--primary);margin-bottom:16px;letter-spacing:.05em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-contact span{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px}
.footer-contact svg{flex:0 0 auto;margin-top:4px;color:var(--primary)}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3)}
.footer-bottom .tech{color:var(--text-3)}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--bg-2);border:1px solid var(--line-strong);color:var(--primary);
  box-shadow:0 10px 28px -8px rgba(25,227,196,.5);
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease;
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:rgba(25,227,196,.14);text-decoration:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);max-width:760px;margin:0 auto;gap:0}
  .article-side{display:none}
  .toc-mobile{display:block}
  .article-title{font-size:34px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn-sm{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-section{padding:40px 0 72px}
  .site-footer{margin-top:72px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .header-inner{height:60px}
  .article-title{font-size:28px;line-height:1.3}
  .article-kicker{font-size:12px}
  .article-meta{gap:10px;font-size:13px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:20px;margin-top:36px}
  .article-body h3{font-size:17px}
  .block-title{font-size:21px}
  .block{margin-top:52px}
  .card-grid{grid-template-columns:1fr}
  .postnav-grid{grid-template-columns:1fr;gap:14px}
  .info-card,.postnav-card{border-radius:16px}
  .faq-item summary{padding:16px 18px;font-size:15.5px}
  .faq-body{padding:0 18px 18px;font-size:14.5px}
  .back-row .btn{width:100%}
  .btn{width:100%;height:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
  .to-top{right:16px;bottom:18px}
  .article-body table{font-size:14px}
  .article-body th,.article-body td{padding:10px}
}

/* roulang page: category1 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --bg-3:#16223A;
  --line:rgba(122,178,220,.14);
  --line-strong:rgba(25,227,196,.35);
  --text-1:#EAF2FF;
  --text-2:#A6B5CC;
  --text-3:#6B7C96;
  --primary:#19E3C4;
  --primary-deep:#0E9C88;
  --secondary:#5B6CFF;
  --accent:#FFB020;
  --danger:#FF6B6B;
  --grad-cta:linear-gradient(120deg,#19E3C4 0%,#4C7BFF 55%,#5B6CFF 100%);
  --radius-card:18px;
  --radius-narrow:14px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-1:0 16px 36px -20px rgba(0,0,0,.75);
  --shadow-2:0 24px 48px -20px rgba(0,0,0,.85);
  --glow:0 10px 28px -8px rgba(25,227,196,.45);
  --container:1180px;
  --font:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease;}
a:hover{color:var(--primary);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
svg{display:block;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1440px){:root{--container:1280px;}}
@media (min-width:1024px) and (max-width:1199px){:root{--container:960px;}}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(7,12,24,.88);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,rgba(25,227,196,.6),rgba(91,108,255,.35),transparent);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:68px;
  transition:height .25s ease;
}
.site-header.compact .header-inner{height:56px;}

.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px 2px rgba(25,227,196,.75);
  animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:.6;}50%{opacity:1;}}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-top{font-size:11px;letter-spacing:.3em;color:var(--text-3);}
.logo-bottom{font-size:16px;font-weight:800;color:var(--text-1);}

.nav-menu{display:flex;align-items:center;gap:4px;margin:0 auto;}
.nav-menu a{
  position:relative;
  padding:8px 13px;
  font-size:15px;
  color:var(--text-2);
  border-radius:999px;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:2px;
  height:2px;
  background:var(--primary);
  box-shadow:0 0 8px var(--primary);
  opacity:0;
  transition:opacity .22s ease;
}
.nav-menu a:hover{color:var(--text-1);}
.nav-menu a:hover::after{opacity:1;}
.nav-menu a.active{
  color:var(--primary);
  background:rgba(25,227,196,.12);
  box-shadow:0 0 18px -6px rgba(25,227,196,.75);
}
.nav-menu a.active::after{opacity:0;}

.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,border-color .22s ease,filter .22s ease,color .22s ease;
}
.btn-primary{
  background:var(--grad-cta);
  color:#04121A;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  filter:brightness(1.1);
  transform:translateY(-1px);
  color:#04121A;
  box-shadow:0 14px 34px -8px rgba(25,227,196,.6);
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  border-color:var(--line-strong);
  color:var(--text-1);
  background:transparent;
}
.btn-ghost:hover{
  background:rgba(25,227,196,.08);
  border-color:var(--primary);
  color:var(--text-1);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

.nav-toggle{
  display:none;
  position:relative;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
}
.nav-toggle span{
  position:absolute;
  left:11px;right:11px;
  height:2px;
  background:var(--text-1);
  border-radius:2px;
  transition:transform .25s ease,top .25s ease,opacity .2s ease;
}
.nav-toggle span:nth-child(1){top:14px;}
.nav-toggle span:nth-child(2){top:20px;}
.nav-toggle span:nth-child(3){top:26px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){top:20px;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){top:20px;transform:rotate(-45deg);}

.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:99;
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:96px 24px 28px;
  background:rgba(5,8,15,.95);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  overflow-y:auto;
}
.mobile-drawer[hidden]{display:none;}
.mobile-drawer a.d-item{
  display:flex;
  align-items:center;
  gap:14px;
  padding:16px 4px;
  font-size:17px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.d-item.active{color:var(--primary);}
.mobile-drawer .idx{
  font-size:13px;
  color:var(--primary);
  opacity:.7;
  font-variant-numeric:tabular-nums;
}
.mobile-drawer .drawer-cta{width:100%;height:48px;margin-top:28px;}

/* ============ 迷你 Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  min-height:290px;
  display:flex;
  align-items:flex-end;
  padding:76px 0 44px;
  background:var(--bg-1);
}
.page-hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.4;
}
.page-hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(620px 340px at 88% 18%,rgba(25,227,196,.2),transparent 70%),
    radial-gradient(520px 300px at 74% 92%,rgba(91,108,255,.18),transparent 72%),
    linear-gradient(115deg,rgba(5,8,15,.94) 0%,rgba(5,8,15,.72) 52%,rgba(5,8,15,.38) 100%);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2;width:100%;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--text-2);}
.breadcrumb .sep{opacity:.6;}
.page-hero h1{
  font-size:48px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.2;
  max-width:900px;
}
.page-hero-sub{
  margin-top:16px;
  font-size:18px;
  color:var(--text-2);
  max-width:620px;
}
.hero-watermark{
  position:absolute;
  right:0;
  bottom:-14px;
  font-size:clamp(44px,7vw,92px);
  font-weight:800;
  letter-spacing:.06em;
  color:rgba(234,242,255,.08);
  font-variant-numeric:tabular-nums;
  pointer-events:none;
  user-select:none;
}

/* ============ 主体布局 ============ */
.page-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 240px;
  gap:48px;
  align-items:start;
  padding-top:64px;
  padding-bottom:96px;
}
.content-col{min-width:0;}
.c-block{margin-bottom:80px;}
.c-block:last-child{margin-bottom:0;}

.block-title{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:32px;
  font-weight:700;
  margin-bottom:12px;
}
.block-title::before{
  content:"";
  width:3px;
  height:22px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px var(--primary);
  flex-shrink:0;
}
.block-lead{
  font-size:16px;
  color:var(--text-2);
  margin-bottom:32px;
  max-width:720px;
}

/* ============ 数据 / 要点条（玻璃数据卡） ============ */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border:1px solid rgba(255,255,255,.08);
  border-radius:20px;
  overflow:hidden;
  position:relative;
  background-image:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);
}
.stat-strip::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(25,227,196,.4),transparent);
}
.stat-item{padding:26px 22px;border-left:1px solid rgba(255,255,255,.08);}
.stat-item:first-child{border-left:0;}
.stat-num{
  font-size:32px;
  font-weight:800;
  line-height:1.1;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
}
.stat-item.accent .stat-num{color:var(--accent);}
.stat-num small{font-size:14px;font-weight:600;color:var(--text-3);margin-left:4px;}
.stat-label{margin-top:8px;font-size:14px;color:var(--text-2);}

/* ============ 图文交替流 ============ */
.flow-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  margin-bottom:72px;
}
.flow-row:last-child{margin-bottom:0;}
.flow-media{position:relative;min-width:0;}
.flow-media img{
  width:100%;
  aspect-ratio:16 / 10;
  object-fit:cover;
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--bg-3);
  box-shadow:var(--shadow-1);
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.flow-media:hover img{
  border-color:var(--line-strong);
  box-shadow:var(--shadow-2);
  transform:translateY(-4px);
}
.flow-media::before{
  content:"";
  position:absolute;
  top:8px;bottom:8px;
  left:-28px;
  width:1px;
  background:linear-gradient(180deg,transparent,var(--line-strong),transparent);
}
.flow-row.reverse .flow-media{order:2;}
.flow-row.reverse .flow-media::before{left:auto;right:-28px;}
.flow-text{min-width:0;}
.flow-text h3{font-size:22px;margin-bottom:16px;}
.flow-text p{font-size:16px;color:var(--text-2);margin-bottom:14px;}
.flow-text p:last-of-type{margin-bottom:0;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:18px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
}
.text-link svg{transition:transform .22s ease;}
.text-link:hover{text-decoration:underline;text-underline-offset:3px;}
.text-link:hover svg{transform:translateX(3px);}

/* ============ 步骤时间轴 ============ */
.steps{
  position:relative;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
}
.steps::before{
  content:"";
  position:absolute;
  top:6px;
  left:7px;
  right:34%;
  height:1px;
  background:linear-gradient(90deg,var(--line-strong),var(--line) 70%,transparent);
}
.step{position:relative;padding-top:36px;}
.step-dot{
  position:absolute;
  top:0;left:0;
  width:14px;height:14px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 14px 3px rgba(25,227,196,.55);
}
.step-idx{
  font-size:30px;
  font-weight:800;
  line-height:1;
  color:rgba(25,227,196,.2);
  font-variant-numeric:tabular-nums;
  margin-bottom:10px;
}
.step h4{font-size:18px;margin-bottom:10px;}
.step p{font-size:15px;color:var(--text-2);}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  padding:40px 40px 40px 44px;
  border-radius:var(--radius-card);
  background:var(--bg-2);
  border:1px solid var(--line);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.cta-band::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--grad-cta);
}
.cta-band h2{font-size:24px;margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}

/* ============ FAQ 折叠面板 ============ */
.faq-list{display:grid;gap:14px;max-width:860px;}
.faq-item{
  position:relative;
  border-radius:20px;
  border:1px solid rgba(255,255,255,.08);
  background-image:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.faq-item::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(25,227,196,.4),transparent);
}
.faq-item:hover{border-color:rgba(25,227,196,.3);}
.faq-item[open]{box-shadow:var(--shadow-2);border-color:rgba(25,227,196,.3);}
.faq-item[open]::after{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--primary);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--text-1);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  position:relative;
  flex-shrink:0;
  width:22px;height:22px;
  transition:transform .25s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
}
.faq-icon::before{left:3px;right:3px;top:10px;height:2px;}
.faq-icon::after{top:3px;bottom:3px;left:10px;width:2px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-body{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ============ 侧栏 ============ */
.side-col{position:sticky;top:92px;}
.side-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 18px;
}
.side-title{
  font-size:13px;
  letter-spacing:.16em;
  color:var(--text-3);
  margin-bottom:14px;
}
.side-links li + li{margin-top:6px;}
.side-links a{
  display:block;
  padding:10px 12px;
  border-radius:10px;
  border-left:2px solid transparent;
  font-size:14px;
  color:var(--text-2);
}
.side-links a:hover{background:rgba(25,227,196,.06);color:var(--text-1);}
.side-links a.active{
  color:var(--primary);
  background:rgba(25,227,196,.1);
  border-left-color:var(--primary);
}
.side-back{
  display:inline-flex;
  margin-top:18px;
  font-size:14px;
  color:var(--text-2);
}
.side-back:hover{color:var(--primary);}

.mobile-tabs{
  grid-column:1 / -1;
  display:none;
  gap:10px;
  overflow-x:auto;
  padding-bottom:8px;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.mobile-tabs::-webkit-scrollbar{display:none;}
.mobile-tabs a{
  padding:8px 15px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--bg-2);
  font-size:14px;
  color:var(--text-2);
  white-space:nowrap;
}
.mobile-tabs a.active{
  color:var(--primary);
  border-color:var(--line-strong);
  background:rgba(25,227,196,.1);
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--bg-0);
  padding-top:64px;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,227,196,.5),rgba(91,108,255,.35),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:260px;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  display:flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--text-2);
}
.socials a:hover{
  color:var(--primary);
  border-color:var(--line-strong);
  background:rgba(25,227,196,.08);
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  margin-bottom:16px;
}
.footer-col ul li + li{margin-top:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-contact li{display:flex;gap:8px;align-items:flex-start;}
.footer-contact li + li{margin-top:12px;}
.footer-contact svg{flex-shrink:0;margin-top:5px;color:var(--primary);}
.footer-contact span{font-size:14px;color:var(--text-2);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:90;
  display:flex;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border-radius:50%;
  background:var(--bg-2);
  border:1px solid var(--line-strong);
  color:var(--primary);
  box-shadow:var(--glow);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:rgba(25,227,196,.12);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .page-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:48px;padding-bottom:72px;}
  .side-col{display:none;}
  .mobile-tabs{display:flex;margin-bottom:36px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:block;}
  .page-hero h1{font-size:38px;}
  .page-hero-sub{font-size:17px;}
  .flow-row{grid-template-columns:1fr;gap:26px;margin-bottom:56px;}
  .flow-row.reverse .flow-media{order:0;}
  .flow-media::before{display:none;}
  .steps{grid-template-columns:1fr;gap:28px;}
  .steps::before{display:none;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-item{border-left:0;border-top:1px solid rgba(255,255,255,.08);}
  .stat-item:nth-child(1),
  .stat-item:nth-child(2){border-top:0;}
  .stat-item:nth-child(even){border-left:1px solid rgba(255,255,255,.08);}
  .cta-band{flex-direction:column;align-items:flex-start;gap:24px;padding:32px 28px 32px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .page-hero{min-height:230px;padding:64px 0 36px;}
  .page-hero h1{font-size:32px;}
  .page-hero-sub{font-size:16px;}
  .block-title{font-size:24px;}
  .block-title::before{height:18px;}
  .block-lead{font-size:15px;}
  .c-block{margin-bottom:56px;}
  .stat-strip{border-radius:16px;}
  .stat-item{padding:20px 16px;}
  .stat-num{font-size:26px;}
  .flow-media img{border-radius:14px;}
  .flow-text h3{font-size:20px;}
  .faq-item summary{font-size:16px;padding:16px 18px;}
  .faq-body{padding:0 18px 18px;}
  .cta-band{border-radius:16px;padding:28px 20px 28px 24px;}
  .cta-band h2{font-size:21px;}
  .cta-actions{flex-direction:column;width:100%;}
  .btn{width:100%;height:48px;}
  .footer-grid{grid-template-columns:1fr;text-align:center;}
  .footer-brand p{max-width:none;margin:0 auto;}
  .footer-brand .logo{justify-content:center;}
  .socials{justify-content:center;}
  .footer-contact li{justify-content:center;}
  .footer-bottom{flex-direction:column;text-align:center;}
  .to-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001s !important;transition-duration:.001s !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --bg-3:#16223A;
  --line:rgba(122,178,220,0.14);
  --line-strong:rgba(25,227,196,0.35);
  --text-1:#EAF2FF;
  --text-2:#A6B5CC;
  --text-3:#6B7C96;
  --primary:#19E3C4;
  --primary-deep:#0E9C88;
  --secondary:#5B6CFF;
  --accent:#FFB020;
  --danger:#FF6B6B;
  --grad-cta:linear-gradient(120deg,#19E3C4 0%,#4C7BFF 55%,#5B6CFF 100%);
  --glass-bg:linear-gradient(160deg,rgba(255,255,255,0.075),rgba(255,255,255,0.02));
  --glass-line:1px solid rgba(255,255,255,0.08);
  --radius-card:18px;
  --radius-narrow:14px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-1:0 16px 36px -20px rgba(0,0,0,0.75);
  --shadow-2:0 24px 48px -20px rgba(0,0,0,0.85);
  --shadow-glow:0 10px 28px -8px rgba(25,227,196,0.45);
  --container:1180px;
  --font:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .22s ease,text-decoration-color .22s ease;}
a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-family:var(--font);letter-spacing:-0.01em;}
h1{font-size:48px;font-weight:800;line-height:1.2;}
h2{font-size:32px;font-weight:700;line-height:1.3;}
h3{font-size:22px;font-weight:600;line-height:1.4;}
h4{font-size:18px;font-weight:600;line-height:1.5;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-title{display:flex;align-items:center;gap:12px;}
.section-title::before{content:"";width:3px;height:18px;border-radius:2px;background:var(--primary);box-shadow:0 0 12px rgba(25,227,196,.8);}
.section-title h2{font-size:32px;}
.section-sub{color:var(--text-2);font-size:15px;margin-top:10px;max-width:640px;}
.more-link{font-size:14px;color:var(--text-2);white-space:nowrap;}
.more-link:hover{color:var(--primary);}
.divider{height:1px;border:0;margin:0;background:linear-gradient(90deg,var(--primary),var(--secondary),transparent);opacity:.55;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,border-color .22s ease,filter .22s ease;
  text-decoration:none;
}
.btn-primary{background:var(--grad-cta);color:#04121A;box-shadow:var(--shadow-glow);}
.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 16px 34px -10px rgba(25,227,196,.6);text-decoration:none;color:#04121A;}
.btn-ghost{background:transparent;color:var(--text-1);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(25,227,196,.08);color:var(--primary);text-decoration:none;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{filter:saturate(.4);opacity:.55;cursor:not-allowed;}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,24,.88);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  transition:height .22s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,var(--primary),var(--secondary),transparent);
  opacity:.65;
}
.header-inner{display:flex;align-items:center;gap:32px;height:68px;transition:height .22s ease;}
.site-header.is-scrolled .header-inner{height:56px;}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-1);}
.logo:hover{text-decoration:none;color:var(--text-1);}
.logo-dot{
  width:6px;height:6px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 10px 2px rgba(25,227,196,.85);flex:0 0 6px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.16;}
.logo-top{font-size:15px;font-weight:700;letter-spacing:.06em;}
.logo-bottom{font-size:12px;color:var(--text-2);letter-spacing:.04em;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-menu a{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:999px;
  font-size:15px;color:var(--text-2);text-decoration:none;
  transition:color .22s ease,background-color .22s ease,box-shadow .22s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px var(--primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-menu a:hover{color:var(--text-1);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{
  color:var(--primary);background:rgba(25,227,196,.12);
  box-shadow:0 0 16px rgba(25,227,196,.28);
}
.nav-menu a.active::after{transform:scaleX(0);}
.header-cta{margin-left:12px;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:var(--bg-1);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);border-radius:2px;
  transition:transform .22s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 迷你 Hero ---------- */
.page-hero{position:relative;overflow:hidden;min-height:280px;display:flex;align-items:center;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(90deg,rgba(5,8,15,.94) 0%,rgba(5,8,15,.78) 42%,rgba(5,8,15,.42) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;top:-40%;right:-10%;width:620px;height:620px;
  background:radial-gradient(circle,rgba(25,227,196,.22),transparent 65%);
  filter:blur(120px);pointer-events:none;
}
.page-hero .grid-lines{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:linear-gradient(90deg,transparent,rgba(0,0,0,.9));
  -webkit-mask-image:linear-gradient(90deg,transparent,rgba(0,0,0,.9));
}
.page-hero-inner{position:relative;z-index:2;padding-top:64px;padding-bottom:64px;max-width:760px;}
.page-hero h1{font-size:44px;margin-bottom:16px;}
.page-hero .hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;margin-bottom:18px;
  font-size:12px;letter-spacing:.08em;color:var(--primary);
  border:1px solid rgba(25,227,196,.4);background:rgba(25,227,196,.1);
}
.page-hero p{font-size:17px;color:var(--text-2);margin:0;max-width:620px;}
.hero-watermark{
  position:absolute;right:32px;bottom:16px;z-index:1;
  font-size:88px;font-weight:800;letter-spacing:.04em;
  color:rgba(25,227,196,.08);font-variant-numeric:tabular-nums;
  pointer-events:none;user-select:none;
}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{border-bottom:1px solid var(--line);background:var(--bg-1);}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:14px 0;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{opacity:.6;}
.breadcrumb .current{color:var(--text-2);}

/* ---------- 布局 ---------- */
.cat-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:48px;align-items:start;}
.hero-img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-narrow);
  border:1px solid var(--line);background:var(--bg-3);margin-bottom:28px;
}

/* ---------- 标签条（小屏） ---------- */
.cat-tabs{display:none;gap:10px;overflow-x:auto;padding:16px 0 4px;-webkit-overflow-scrolling:touch;}
.cat-tabs::-webkit-scrollbar{height:0;}
.cat-tabs a{
  flex:0 0 auto;padding:8px 16px;border-radius:999px;font-size:14px;
  color:var(--text-2);border:1px solid var(--line);background:var(--bg-1);white-space:nowrap;
}
.cat-tabs a.active{color:var(--primary);border-color:rgba(25,227,196,.4);background:rgba(25,227,196,.12);}

/* ---------- 编号清单 ---------- */
.num-list{counter-reset:none;border-top:1px dashed rgba(122,178,220,.22);}
.num-item{
  display:flex;gap:24px;padding:26px 4px;
  border-bottom:1px dashed rgba(122,178,220,.22);
  transition:background-color .22s ease;
}
.num-item:hover{background:rgba(122,178,220,.04);}
.num-index{
  flex:0 0 64px;font-size:34px;font-weight:800;line-height:1.1;
  color:rgba(25,227,196,.2);font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.num-body h3{font-size:19px;margin-bottom:8px;}
.num-body p{font-size:15px;color:var(--text-2);margin:0 0 8px;}
.num-body p:last-child{margin-bottom:0;}
.num-body .text-link{font-size:14px;display:inline-block;margin-top:4px;}

/* ---------- 数据条（玻璃卡） ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-card{
  position:relative;padding:22px;border-radius:20px;
  background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:var(--glass-line);
  overflow:hidden;
}
.stat-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(25,227,196,.4),transparent);
}
.stat-num{font-size:34px;font-weight:800;line-height:1.2;color:var(--accent);font-variant-numeric:tabular-nums;}
.stat-num small{font-size:14px;font-weight:600;color:var(--text-2);margin-left:4px;}
.stat-label{font-size:14px;color:var(--text-2);margin-top:6px;}

/* ---------- 图文交替 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.split.reverse .split-media{order:2;}
.split-media{position:relative;}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-narrow);border:1px solid var(--line);}
.split-media::after{
  content:"";position:absolute;top:8%;bottom:8%;left:-20px;width:1px;
  background:linear-gradient(180deg,transparent,var(--line-strong),transparent);
}
.split.reverse .split-media::after{left:auto;right:-20px;}
.split h3{margin-bottom:12px;}
.split p{color:var(--text-2);font-size:15.5px;}
.check-list{margin-top:8px;}
.check-list li{
  position:relative;padding-left:22px;margin-bottom:10px;
  font-size:15px;color:var(--text-2);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:10px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px rgba(25,227,196,.7);
}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:0;right:0;top:7px;height:1px;
  background:linear-gradient(90deg,var(--primary),var(--secondary),var(--line));
  opacity:.5;
}
.tl-step{position:relative;padding-top:34px;}
.tl-step::before{
  content:"";position:absolute;top:0;left:0;width:14px;height:14px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 5px rgba(25,227,196,.12),0 0 16px rgba(25,227,196,.9);
}
.tl-no{font-size:26px;font-weight:800;color:rgba(25,227,196,.2);font-variant-numeric:tabular-nums;line-height:1;}
.tl-step h4{margin:10px 0 8px;}
.tl-step p{font-size:14.5px;color:var(--text-2);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  position:relative;margin-bottom:14px;border-radius:20px;overflow:hidden;
  background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:var(--glass-line);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 10px rgba(25,227,196,.7);
  opacity:0;transition:opacity .25s ease;
}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-body{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  padding:48px;border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(25,227,196,.1),rgba(91,108,255,.12)),var(--bg-2);
}
.cta-band::after{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(91,108,255,.28),transparent 65%);
  filter:blur(90px);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:26px;margin-bottom:10px;}
.cta-inner p{color:var(--text-2);font-size:15px;margin:0;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 侧栏 ---------- */
.side-nav{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px;}
.side-card{
  border:1px solid var(--line);border-radius:var(--radius-narrow);background:var(--bg-2);
  padding:18px 18px 14px;box-shadow:var(--shadow-1);
}
.side-card h4{font-size:14px;color:var(--primary);letter-spacing:.04em;margin-bottom:12px;}
.side-nav a{
  display:block;position:relative;padding:9px 10px 9px 14px;border-radius:10px;
  font-size:14px;color:var(--text-2);
}
.side-nav a::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;border-radius:2px;
  background:var(--primary);opacity:0;transition:opacity .22s ease;
}
.side-nav a:hover{color:var(--text-1);background:rgba(122,178,220,.06);text-decoration:none;}
.side-nav a.active{color:var(--primary);background:rgba(25,227,196,.1);}
.side-nav a.active::before{opacity:1;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-0);position:relative;margin-top:24px;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--secondary),transparent);
  opacity:.6;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px;}
.footer-brand p{font-size:14px;color:var(--text-2);margin:16px 0 18px;max-width:280px;}
.socials{display:flex;gap:12px;}
.socials a{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:12px;border:1px solid var(--line);color:var(--text-2);background:var(--bg-1);
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.socials a:hover{color:var(--primary);border-color:var(--line-strong);transform:translateY(-2px);}
.footer-col h4{font-size:14px;color:var(--primary);margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--text-2);}
.footer-col ul li a:hover{color:var(--primary);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-2);align-items:flex-start;margin-bottom:12px;}
.footer-contact li svg{flex:0 0 16px;margin-top:4px;color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line-strong);
  background:rgba(16,26,46,.9);color:var(--primary);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,box-shadow .25s ease;
  backdrop-filter:blur(10px);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{box-shadow:0 0 20px rgba(25,227,196,.5);}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{max-width:var(--container);}
}
@media (max-width:1199px){
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .side-nav{display:none;}
  .cat-tabs{display:flex;}
  .timeline{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .timeline::before{display:none;}
}
@media (max-width:1023px){
  .nav-toggle{display:flex;}
  .nav-menu{
    position:fixed;inset:68px 0 0 0;z-index:90;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:24px 20px 120px;
    background:rgba(5,8,15,.96);
    backdrop-filter:blur(14px);
    transform:translateX(100%);transition:transform .28s ease;
    overflow-y:auto;
  }
  .nav-menu.is-open{transform:translateX(0);}
  .nav-menu a{font-size:17px;padding:14px 16px;border-radius:12px;border:1px solid transparent;}
  .nav-menu a::after{display:none;}
  .nav-menu a.active{border-color:rgba(25,227,196,.3);}
  .header-cta{display:none;}
  .hero-watermark{font-size:64px;right:20px;}
  .page-hero h1{font-size:36px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-media{order:0;}
  .split-media::after{display:none;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .section-title h2{font-size:24px;}
  .page-hero{min-height:240px;}
  .page-hero h1{font-size:30px;}
  .page-hero-inner{padding-top:44px;padding-bottom:44px;}
  .hero-watermark{font-size:48px;bottom:8px;}
  .num-item{flex-direction:column;gap:8px;padding:20px 2px;}
  .num-index{font-size:26px;}
  .stat-grid{grid-template-columns:1fr;gap:14px;}
  .timeline{grid-template-columns:1fr;gap:26px;}
  .cta-band{padding:28px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;height:48px;}
  .btn{width:100%;height:48px;}
  .faq-item summary{font-size:16px;padding:18px;}
  .faq-body{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;text-align:left;padding:44px 0 28px;}
  .footer-bottom{justify-content:center;text-align:center;}
  .to-top{right:16px;bottom:16px;}
}

/* roulang page: category3 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --bg-3:#16223A;
  --line:rgba(122,178,220,0.14);
  --line-strong:rgba(25,227,196,0.35);
  --text-1:#EAF2FF;
  --text-2:#A6B5CC;
  --text-3:#6B7C96;
  --primary:#19E3C4;
  --primary-deep:#0E9C88;
  --secondary:#5B6CFF;
  --accent:#FFB020;
  --danger:#FF6B6B;
  --grad-cta:linear-gradient(120deg,#19E3C4 0%,#4C7BFF 55%,#5B6CFF 100%);
  --radius-card:18px;
  --radius-narrow:14px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-1:0 16px 36px -20px rgba(0,0,0,0.75);
  --shadow-2:0 24px 48px -20px rgba(0,0,0,0.85);
  --shadow-cta:0 10px 28px -8px rgba(25,227,196,0.45);
  --font-stack:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-stack);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .22s ease,text-underline-offset .22s ease;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4{margin:0;font-family:var(--font-stack);color:var(--text-1);line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--grad-cta);color:#04121A;box-shadow:var(--shadow-cta);}
.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 14px 36px -8px rgba(25,227,196,.6);text-decoration:none;color:#04121A;}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1);}
.btn-ghost:hover{border-color:var(--primary);background:rgba(25,227,196,.08);color:var(--primary);text-decoration:none;transform:translateY(-1px);}
.btn-line{background:rgba(25,227,196,.06);border-color:var(--line-strong);color:var(--primary);}
.btn-line:hover{background:rgba(25,227,196,.14);text-decoration:none;transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn:disabled{filter:saturate(.4);cursor:not-allowed;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,24,.88);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(25,227,196,.55),rgba(91,108,255,.35) 45%,rgba(25,227,196,0) 100%);
}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;transition:height .25s ease;}
.site-header.compact .header-inner{height:56px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--text-1);text-decoration:none;flex:0 0 auto;}
.logo:hover{text-decoration:none;color:var(--text-1);}
.logo-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary),0 0 20px rgba(25,227,196,.5);flex:0 0 6px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-top{font-size:15px;font-weight:800;letter-spacing:.02em;}
.logo-bottom{font-size:12px;color:var(--text-2);letter-spacing:.04em;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;height:36px;padding:0 13px;
  border-radius:999px;color:var(--text-2);font-size:15px;transition:all .22s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px var(--primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-menu a:hover{color:var(--text-1);text-decoration:none;}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{
  color:var(--primary);background:rgba(25,227,196,.12);
  box-shadow:0 0 18px -4px rgba(25,227,196,.6);
}
.nav-menu a.active::after{display:none;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--bg-1);color:var(--text-1);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:16px;height:1.6px;background:currentColor;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:currentColor;border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;display:none;
  background:rgba(5,8,15,.95);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.drawer.open{display:block;}
.drawer-inner{padding:88px 24px 32px;display:flex;flex-direction:column;gap:6px;height:100%;overflow-y:auto;}
.drawer-inner a{
  display:flex;align-items:center;gap:12px;padding:14px 4px;
  color:var(--text-2);font-size:17px;border-bottom:1px solid var(--line);
}
.drawer-inner a:hover{color:var(--primary);text-decoration:none;}
.drawer-inner a.active{color:var(--primary);}
.drawer-inner .d-num{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.drawer-inner .btn{margin-top:24px;border-bottom:0;}

/* ---------- 迷你 Hero ---------- */
.mini-hero{position:relative;overflow:hidden;min-height:300px;display:flex;align-items:center;background:var(--bg-1);}
.mini-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.5;
}
.mini-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 420px at 88% 28%,rgba(25,227,196,.16),transparent 66%),
    radial-gradient(520px 380px at 96% 82%,rgba(91,108,255,.14),transparent 68%),
    linear-gradient(270deg,rgba(5,8,15,.5) 0%,rgba(5,8,15,.88) 52%,rgba(5,8,15,.97) 100%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 24px);
}
.hero-inner{position:relative;z-index:2;padding-top:40px;padding-bottom:40px;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--primary);
  border:1px solid var(--line-strong);background:rgba(25,227,196,.08);
  border-radius:999px;padding:4px 14px;margin-bottom:18px;
}
.mini-hero h1{font-size:48px;font-weight:800;letter-spacing:-.01em;line-height:1.2;max-width:880px;}
.hero-sub{margin-top:14px;font-size:18px;color:var(--text-2);max-width:640px;}
.hero-watermark{
  position:absolute;right:22px;bottom:4px;z-index:1;
  font-size:104px;font-weight:800;line-height:1;
  color:rgba(234,242,255,.08);letter-spacing:.04em;
  font-variant-numeric:tabular-nums;pointer-events:none;user-select:none;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;padding:22px 0;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--text-2);}

/* ---------- 主体布局 ---------- */
.page-body{padding-bottom:96px;}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:28px;align-items:start;}
.content-col{min-width:0;}

/* ---------- 侧栏 ---------- */
.side-nav{position:sticky;top:92px;}
.side-title{margin:0 0 12px;font-size:13px;letter-spacing:.08em;color:var(--text-3);}
.side-scroll{display:flex;flex-direction:column;gap:4px;background:var(--bg-1);border:1px solid var(--line);border-radius:16px;padding:12px;}
.side-scroll a{
  display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;transition:all .22s ease;
}
.side-scroll a:hover{color:var(--text-1);background:rgba(255,255,255,.03);text-decoration:none;}
.side-scroll a.active{color:var(--primary);background:rgba(25,227,196,.1);border-left-color:var(--primary);box-shadow:0 0 16px -6px rgba(25,227,196,.8);}
.side-scroll a.back{color:var(--text-3);margin-top:6px;border-top:1px solid var(--line);border-radius:0;padding-top:13px;}

/* ---------- 板块通用 ---------- */
.section{margin-bottom:72px;}
.section-head{display:flex;align-items:center;gap:14px;margin-bottom:22px;}
.section-head h2{font-size:32px;font-weight:700;letter-spacing:-.01em;}
.section-head::before{content:"";width:3px;height:18px;border-radius:2px;background:var(--grad-cta);box-shadow:0 0 12px rgba(25,227,196,.7);}
.section-head .head-fill{flex:1;height:1px;background:linear-gradient(90deg,var(--line),transparent);}
.section-intro{color:var(--text-2);font-size:16px;max-width:760px;margin-bottom:26px;}

/* ---------- 卡片矩阵 ---------- */
.card-wide{
  position:relative;display:grid;grid-template-columns:1.05fr 1fr;gap:30px;align-items:center;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px;box-shadow:var(--shadow-1);overflow:hidden;
}
.card-wide::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--grad-cta);box-shadow:0 0 18px rgba(25,227,196,.6);
}
.card-wide .wide-media{
  border-radius:var(--radius-narrow);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-3);aspect-ratio:16/10;
}
.card-wide .wide-media img{width:100%;height:100%;object-fit:cover;}
.card-wide h3{font-size:22px;font-weight:600;margin-bottom:12px;}
.card-wide p{color:var(--text-2);font-size:15px;margin-bottom:10px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--primary);font-weight:600;}
.text-link:hover{text-decoration:underline;text-underline-offset:3px;}
.text-link .arrow{transition:transform .22s ease;}
.text-link:hover .arrow{transform:translateX(3px);}

.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px;}
.n-card{
  position:relative;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-narrow);padding:22px;box-shadow:var(--shadow-1);
  overflow:hidden;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.n-card::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:0 3px 3px 0;
  background:var(--grad-cta);opacity:0;transform:scaleY(.35);transition:opacity .22s ease,transform .22s ease;
}
.n-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.n-card:hover::before{opacity:1;transform:scaleY(1);}
.icon-box{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:rgba(25,227,196,.06);color:var(--primary);margin-bottom:16px;
}
.n-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.n-card p{font-size:14px;color:var(--text-2);}

/* ---------- 处理顺序条 ---------- */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-1);overflow:hidden;
}
.flow-item{padding:26px 22px;border-right:1px dashed var(--line);position:relative;}
.flow-item:last-child{border-right:0;}
.flow-num{font-size:28px;font-weight:800;color:rgba(25,227,196,.35);font-variant-numeric:tabular-nums;line-height:1;margin-bottom:12px;}
.flow-item h4{font-size:17px;font-weight:600;margin-bottom:8px;}
.flow-item p{font-size:14px;color:var(--text-2);}

/* ---------- 清单 ---------- */
.check-list{display:grid;gap:12px;max-width:760px;}
.check-list li{
  position:relative;padding-left:22px;color:var(--text-2);font-size:15px;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:12px;width:10px;height:1.6px;
  background:var(--primary);border-radius:2px;box-shadow:0 0 8px rgba(25,227,196,.7);
}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;color:var(--primary);border:1px solid var(--line-strong);background:rgba(25,227,196,.1);
}
.badge-accent{color:var(--accent);border-color:rgba(255,176,32,.4);background:rgba(255,176,32,.1);}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  border:1px solid var(--line);border-radius:20px;padding:38px 36px;
  background:linear-gradient(120deg,rgba(25,227,196,.10),rgba(91,108,255,.10)),var(--bg-1);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,227,196,.22),transparent 68%);filter:blur(40px);pointer-events:none;
}
.cta-band h2{font-size:28px;font-weight:700;margin-bottom:8px;position:relative;z-index:1;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:560px;position:relative;z-index:1;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;}
.faq-item{
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.08);
  border-radius:20px;margin-bottom:14px;overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-left:3px solid var(--primary);box-shadow:0 18px 38px -24px rgba(0,0,0,.9);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 22px;font-size:17px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";width:11px;height:11px;flex:0 0 11px;margin-top:-4px;color:var(--primary);
  border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
  transform:rotate(45deg);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:4px;}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}
.faq-footer{margin-top:22px;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--bg-0);padding:64px 0 0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(25,227,196,.5),rgba(91,108,255,.3) 50%,transparent 100%);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:32px;padding-bottom:44px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-3);max-width:280px;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);background:var(--bg-1);transition:all .22s ease;
}
.socials a:hover{color:var(--primary);border-color:var(--line-strong);text-decoration:none;transform:translateY(-2px);}
.footer-col h4{font-size:14px;color:var(--primary);margin-bottom:16px;letter-spacing:.04em;font-weight:600;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);}
.footer-contact svg{flex:0 0 16px;margin-top:4px;color:var(--text-3);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line);padding:20px 0 28px;font-size:13px;color:var(--text-3);
}
.footer-meta{font-variant-numeric:tabular-nums;}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-2);border:1px solid var(--line-strong);color:var(--primary);
  box-shadow:0 0 22px -6px rgba(25,227,196,.7);
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .25s ease,transform .25s ease;cursor:pointer;
}
.back-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:960px;}
  .layout{grid-template-columns:1fr;}
  .side-nav{position:static;margin-bottom:8px;}
  .side-scroll{
    flex-direction:row;gap:8px;overflow-x:auto;padding:10px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .side-scroll::-webkit-scrollbar{display:none;}
  .side-scroll a{
    white-space:nowrap;border-left:0;border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:13px;
  }
  .side-scroll a.active{border-color:var(--line-strong);}
  .side-scroll a.back{border-top:1px solid var(--line);margin-top:0;padding-top:7px;}
  .mini-hero h1{font-size:40px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .matrix{grid-template-columns:repeat(2,1fr);}
  .card-wide{grid-template-columns:1fr;padding:24px;}
  .card-wide .wide-media{aspect-ratio:16/9;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .flow-item:nth-child(2){border-right:0;}
  .flow-item:nth-child(1),.flow-item:nth-child(2){border-bottom:1px dashed var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{margin-bottom:56px;}
  .section-head h2{font-size:24px;}
  .mini-hero{min-height:260px;}
  .mini-hero h1{font-size:32px;}
  .hero-sub{font-size:16px;}
  .hero-watermark{font-size:64px;right:14px;}
  .matrix{grid-template-columns:1fr;gap:14px;}
  .n-card{border-radius:16px;padding:20px;}
  .card-wide{border-radius:16px;padding:20px;}
  .flow{grid-template-columns:1fr;}
  .flow-item{border-right:0;border-bottom:1px dashed var(--line);}
  .flow-item:last-child{border-bottom:0;}
  .cta-band{padding:28px 20px;border-radius:16px;}
  .cta-band h2{font-size:24px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;height:48px;}
  .faq-item summary{font-size:16px;padding:16px 18px;}
  .faq-body{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;text-align:center;}
  .footer-brand p{margin:0 auto;}
  .socials{justify-content:center;}
  .footer-contact li{justify-content:center;}
  .footer-bottom{justify-content:center;text-align:center;}
  .back-top{right:16px;bottom:16px;}
}

/* roulang page: category4 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --bg-3:#16223A;
  --line:rgba(122,178,220,0.14);
  --line-strong:rgba(25,227,196,0.35);
  --text-1:#EAF2FF;
  --text-2:#A6B5CC;
  --text-3:#6B7C96;
  --primary:#19E3C4;
  --primary-deep:#0E9C88;
  --secondary:#5B6CFF;
  --accent:#FFB020;
  --danger:#FF6B6B;
  --grad-cta:linear-gradient(120deg,#19E3C4 0%,#4C7BFF 55%,#5B6CFF 100%);
  --radius-card:18px;
  --radius-card-sm:14px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-1:0 16px 36px -20px rgba(0,0,0,.75);
  --shadow-2:0 24px 48px -20px rgba(0,0,0,.85);
  --shadow-cta:0 10px 28px -8px rgba(25,227,196,.45);
  --font:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1280px}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background .22s ease,color .22s ease;
  text-decoration:none;
  white-space:nowrap;
}
.btn:hover{text-decoration:none}
.btn-primary{
  background:var(--grad-cta);
  color:#031018;
  box-shadow:var(--shadow-cta);
}
.btn-primary:hover{
  color:#031018;
  filter:brightness(1.1);
  transform:translateY(-1px);
  box-shadow:0 14px 34px -8px rgba(25,227,196,.55);
}
.btn-ghost{
  background:transparent;
  color:var(--text-1);
  border-color:var(--line);
}
.btn-ghost:hover{
  color:var(--primary);
  border-color:var(--line-strong);
  background:rgba(25,227,196,.08);
  text-decoration:none;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- 顶栏与导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(7,12,24,.88);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,var(--primary) 0%,var(--secondary) 45%,transparent 100%);
  opacity:.6;
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
  transition:height .22s ease;
}
.site-header.compact .header-inner{height:56px}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  flex-shrink:0;
}
.logo:hover{text-decoration:none}
.logo-dot{
  width:9px;height:9px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px var(--primary),0 0 22px rgba(25,227,196,.6);
  flex-shrink:0;
}
.logo-text{
  display:flex;
  flex-direction:column;
  line-height:1.15;
}
.logo-top{
  font-size:13px;
  color:var(--text-2);
  letter-spacing:.16em;
}
.logo-bottom{
  font-size:16px;
  font-weight:800;
  color:var(--text-1);
  letter-spacing:.02em;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  flex-wrap:nowrap;
}
.nav-menu a{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--text-2);
  text-decoration:none;
  white-space:nowrap;
  transition:color .22s ease,background .22s ease,box-shadow .22s ease;
}
.nav-menu a:hover{
  color:var(--text-1);
  background:rgba(255,255,255,.05);
  box-shadow:0 2px 0 0 var(--primary) inset;
  text-decoration:none;
}
.nav-menu a.active{
  color:var(--primary);
  background:rgba(25,227,196,.12);
  box-shadow:0 0 18px -6px rgba(25,227,196,.75);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.nav-toggle{
  display:none;
  width:42px;height:38px;
  border-radius:10px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-1);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  transition:border-color .22s ease,background .22s ease;
}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(25,227,196,.08)}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:200;
  background:rgba(5,8,15,.96);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transform:translateY(-100%);
  transition:transform .3s ease;
  display:flex;
  flex-direction:column;
  padding:24px 20px 32px;
  overflow-y:auto;
}
.drawer.open{transform:translateY(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:24px;
}
.drawer-close{
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-1);
  font-size:20px;
  cursor:pointer;
}
.drawer-links a{
  display:flex;
  align-items:center;
  gap:14px;
  padding:16px 4px;
  border-bottom:1px solid var(--line);
  color:var(--text-1);
  font-size:17px;
  text-decoration:none;
}
.drawer-links a.active{color:var(--primary)}
.drawer-links span.num{
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
  letter-spacing:.08em;
}
.drawer-foot{margin-top:auto;padding-top:28px}

/* ---------- 迷你 Hero ---------- */
.page-hero{
  position:relative;
  min-height:300px;
  display:flex;
  align-items:flex-end;
  background-color:var(--bg-1);
  background-image:
    radial-gradient(circle at 88% 26%, rgba(25,227,196,.20), transparent 52%),
    radial-gradient(circle at 72% 82%, rgba(91,108,255,.18), transparent 55%),
    linear-gradient(268deg, rgba(5,8,15,.42) 0%, rgba(5,8,15,.86) 48%, var(--bg-0) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover,cover,cover,cover;
  background-position:center,center,center,center;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,.03) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(0deg, rgba(255,255,255,.03) 0 1px, transparent 1px 24px);
  pointer-events:none;
}
.page-hero .container{
  position:relative;
  z-index:2;
  padding-top:72px;
  padding-bottom:44px;
}
.page-hero .hero-mark{
  position:absolute;
  right:24px;
  bottom:6px;
  font-size:92px;
  font-weight:800;
  letter-spacing:.06em;
  color:#EAF2FF;
  opacity:.08;
  line-height:1;
  font-variant-numeric:tabular-nums;
  pointer-events:none;
  user-select:none;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.breadcrumb .current{color:var(--text-2)}
.page-hero h1{
  font-size:48px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.2;
  max-width:820px;
}
.page-hero .hero-sub{
  margin-top:14px;
  font-size:18px;
  color:var(--text-2);
  max-width:640px;
}

/* ---------- 状态条 ---------- */
.status-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
.status-inner{
  display:flex;
  align-items:center;
  gap:26px;
  flex-wrap:wrap;
  padding:14px 24px;
  font-size:14px;
  color:var(--text-2);
}
.status-live{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--primary);
  font-weight:600;
}
.status-live i{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px var(--primary);
  animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:.6}
  50%{opacity:1}
}
.status-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-variant-numeric:tabular-nums;
}
.status-item::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:var(--text-3);
}
.status-item.on::before{background:var(--primary);box-shadow:0 0 8px rgba(25,227,196,.8)}

/* ---------- 移动端横向标签条 ---------- */
.tag-scroll{
  display:none;
  gap:10px;
  overflow-x:auto;
  padding:16px 24px;
  border-bottom:1px solid var(--line);
  scrollbar-width:none;
}
.tag-scroll::-webkit-scrollbar{display:none}
.tag-scroll a{
  flex:0 0 auto;
  padding:8px 15px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--bg-2);
  color:var(--text-2);
  font-size:14px;
  text-decoration:none;
  white-space:nowrap;
}
.tag-scroll a.active{
  color:var(--primary);
  border-color:var(--line-strong);
  background:rgba(25,227,196,.1);
}

/* ---------- 主体布局 ---------- */
.main-wrap{
  padding:72px 0 96px;
}
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 260px;
  gap:44px;
  align-items:start;
}
.content-col{min-width:0}
.section{margin-bottom:64px}
.section:last-child{margin-bottom:0}
.sec-head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
}
.sec-head::before{
  content:"";
  width:3px;
  height:18px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(25,227,196,.9);
  flex-shrink:0;
}
.sec-head h2{
  font-size:32px;
  font-weight:700;
}
.sec-lead{
  color:var(--text-2);
  font-size:16px;
  max-width:760px;
  margin-bottom:26px;
}

/* ---------- 对照表 ---------- */
.compare{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--bg-2);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.compare-head{
  display:grid;
  grid-template-columns:30% 1fr;
  background:var(--bg-1);
  border-bottom:1px solid var(--line);
}
.compare-head span{
  padding:14px 22px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--primary);
  font-weight:600;
}
.compare-head span:first-child{border-right:1px solid var(--line)}
.compare-row{
  display:grid;
  grid-template-columns:30% 1fr;
  border-top:1px solid var(--line);
  transition:background .22s ease;
}
.compare-row:first-of-type{border-top:0}
.compare-row:hover{background:rgba(255,255,255,.04)}
.compare-key{
  position:relative;
  padding:20px 22px;
  border-right:1px solid var(--line);
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
}
.compare-key::before{
  content:"";
  position:absolute;
  left:0;top:20px;bottom:20px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--primary);
  opacity:0;
  transition:opacity .22s ease;
}
.compare-row:hover .compare-key::before{opacity:1}
.compare-val{
  padding:20px 22px;
  font-size:15px;
  color:var(--text-2);
}
.compare-val strong{color:var(--text-1);font-weight:600}
.compare-val .mini-tag{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 10px;
  margin-right:8px;
  border-radius:999px;
  font-size:12px;
  border:1px solid var(--line-strong);
  background:rgba(25,227,196,.1);
  color:var(--primary);
  vertical-align:middle;
}
.compare-val .mini-tag.warn{
  border-color:rgba(255,176,32,.4);
  background:rgba(255,176,32,.1);
  color:var(--accent);
}

/* ---------- 图片区 ---------- */
.media-figure{
  margin:0 0 52px;
  border-radius:var(--radius-card-sm);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-3);
  box-shadow:var(--shadow-1);
}
.media-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--radius-card-sm);
}
.media-figure figcaption{
  padding:12px 18px;
  font-size:13px;
  color:var(--text-3);
  background:var(--bg-1);
}

/* ---------- 侧栏 ---------- */
.side-nav{
  position:sticky;
  top:92px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.side-card{
  border:1px solid var(--line);
  border-radius:var(--radius-card-sm);
  background:var(--bg-2);
  padding:18px 18px 12px;
  box-shadow:var(--shadow-1);
}
.side-card h3{
  font-size:14px;
  color:var(--primary);
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:10px;
}
.side-card a{
  display:block;
  padding:9px 12px;
  border-radius:9px;
  font-size:14px;
  color:var(--text-2);
  text-decoration:none;
  border-left:2px solid transparent;
  transition:color .22s ease,background .22s ease,border-color .22s ease;
}
.side-card a:hover{
  color:var(--text-1);
  background:rgba(255,255,255,.05);
  text-decoration:none;
}
.side-card a.active{
  color:var(--primary);
  border-left-color:var(--primary);
  background:rgba(25,227,196,.09);
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--bg-1);
  padding:40px 38px;
  display:grid;
  grid-template-columns:1.6fr 1fr;
  gap:34px;
  align-items:center;
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-60px;
  top:-70px;
  width:280px;
  height:280px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(25,227,196,.22), transparent 68%);
  pointer-events:none;
}
.cta-band h2{
  font-size:28px;
  font-weight:700;
  margin-bottom:12px;
  position:relative;
}
.cta-band p{
  color:var(--text-2);
  font-size:15px;
  position:relative;
}
.cta-actions{
  display:flex;
  flex-direction:column;
  gap:12px;
  position:relative;
}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:860px;
  margin:0 auto;
}
.faq-item{
  position:relative;
  border:1px solid rgba(255,255,255,.08);
  border-radius:20px;
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .22s ease;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--primary);
  box-shadow:0 0 12px rgba(25,227,196,.9);
  opacity:0;
  transition:opacity .25s ease;
}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  font-size:17px;
  font-weight:600;
  color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex-shrink:0;
  width:22px;height:22px;
  position:relative;
  transition:transform .25s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-body{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--bg-0);
  padding:64px 0 0;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--primary) 22%,var(--secondary) 62%,transparent);
  opacity:.55;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{
  font-size:14px;
  color:var(--text-3);
  max-width:280px;
}
.socials{
  display:flex;
  gap:10px;
  margin-top:16px;
}
.socials a{
  width:36px;height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--text-2);
  transition:border-color .22s ease,color .22s ease,background .22s ease;
}
.socials a:hover{
  color:var(--primary);
  border-color:var(--line-strong);
  background:rgba(25,227,196,.08);
  text-decoration:none;
}
.footer-col h4{
  font-size:14px;
  color:var(--primary);
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:14px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{
  font-size:14px;
  color:var(--text-2);
}
.footer-col ul li a:hover{color:var(--primary)}
.footer-contact ul li{
  display:flex;
  align-items:flex-start;
  gap:9px;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:12px;
}
.footer-contact svg{flex-shrink:0;margin-top:4px;color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:46px;height:46px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:var(--bg-2);
  color:var(--primary);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,box-shadow .25s ease;
  box-shadow:0 0 20px -6px rgba(25,227,196,.6);
  z-index:90;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{box-shadow:0 0 26px -4px rgba(25,227,196,.85)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .layout{grid-template-columns:1fr;gap:0}
  .side-nav{display:none}
  .tag-scroll{display:flex}
  .page-hero h1{font-size:40px}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .page-hero h1{font-size:36px}
  .page-hero .hero-mark{font-size:70px;right:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .main-wrap{padding:56px 0 72px}
  .section{margin-bottom:48px}
  .sec-head h2{font-size:24px}
  .page-hero{min-height:260px}
  .page-hero .container{padding-top:56px;padding-bottom:34px}
  .page-hero h1{font-size:32px}
  .page-hero .hero-sub{font-size:16px}
  .page-hero .hero-mark{font-size:52px;opacity:.07}
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr;border-top:1px solid var(--line)}
  .compare-key{
    border-right:0;
    padding:16px 18px 8px;
    font-size:15px;
  }
  .compare-key::before{top:16px;bottom:8px;opacity:1}
  .compare-val{padding:0 18px 18px 18px;font-size:14px}
  .media-figure{margin-bottom:40px}
  .cta-band{
    grid-template-columns:1fr;
    padding:28px 22px;
    gap:22px;
  }
  .cta-band h2{font-size:24px}
  .cta-actions{width:100%}
  .btn{width:100%;height:48px}
  .btn-sm{width:auto;height:38px}
  .faq-item summary{font-size:16px;padding:16px 18px}
  .faq-body{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr;text-align:center;gap:26px}
  .footer-brand p{margin:0 auto}
  .socials{justify-content:center}
  .footer-contact ul li{justify-content:center;text-align:left}
  .footer-bottom{justify-content:center;text-align:center}
  .status-inner{gap:14px;font-size:13px}
  .to-top{right:16px;bottom:16px}
}