/* roulang page: index */
:root{
  --bg:#050814;
  --bg-2:#0A1224;
  --panel:rgba(15,23,42,.72);
  --panel-2:rgba(255,255,255,.06);
  --line:rgba(148,163,184,.18);
  --primary:#22D3EE;
  --primary-2:#3B82F6;
  --accent:#7CFF6B;
  --text:#E5F2FF;
  --muted:#94A3B8;
  --danger:#FB7185;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.45);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 12% -8%, rgba(34,211,238,.13), transparent 62%),
    radial-gradient(760px 520px at 92% 6%, rgba(59,130,246,.12), transparent 60%),
    linear-gradient(rgba(148,163,184,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,.055) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x: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(--accent);}
h1,h2,h3,h4,h5{font-weight:800;line-height:1.25;color:#fff;margin:0;}
p{margin:0 0 1rem;}
ul{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.section{padding:88px 0;}
.section-sm{padding:56px 0;}
.container{max-width:1240px;padding-left:24px;padding-right:24px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--primary);
  text-transform:none;font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:2px;}
.section-title{font-size:clamp(1.5rem,3vw,2.4rem);margin-bottom:14px;}
.section-sub{color:var(--muted);max-width:760px;font-size:15.5px;}
.text-muted-2{color:var(--muted);}
.glass{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06), var(--shadow);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.glass:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.45);box-shadow:inset 0 1px 0 rgba(255,255,255,.08), 0 24px 64px rgba(0,0,0,.55), 0 0 0 1px rgba(34,211,238,.14);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  color:var(--primary);background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.28);white-space:nowrap;
}
.tag.green{color:var(--accent);background:rgba(124,255,107,.09);border-color:rgba(124,255,107,.26);}
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 28px;border-radius:999px;font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .24s ease,box-shadow .24s ease,background .24s ease,border-color .24s ease,color .24s ease;
}
.btn-glow{
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-2) 100%);
  color:#04121c;box-shadow:0 12px 34px rgba(34,211,238,.28);
}
.btn-glow:hover{color:#04121c;transform:translateY(-2px);box-shadow:0 18px 44px rgba(34,211,238,.48),var(--glow);filter:brightness(1.06);}
.btn-ghost{
  background:rgba(255,255,255,.03);border-color:rgba(148,163,184,.32);color:var(--text);
}
.btn-ghost:hover{color:#fff;border-color:rgba(34,211,238,.6);background:rgba(34,211,238,.1);transform:translateY(-2px);}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--primary);}
.link-arrow i{transition:transform .24s ease;}
.link-arrow:hover i{transform:translateX(5px);}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(34,211,238,.4),transparent);border:0;margin:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(5,8,20,.82);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(148,163,184,.14);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.75),rgba(124,255,107,.5),transparent);
}
.nav-inner{display:flex;align-items:center;gap:18px;min-height:80px;}
.brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:18px;letter-spacing:.01em;}
.brand:hover{color:#fff;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  display:grid;place-items:center;font-size:16px;color:#04121c;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 20px rgba(34,211,238,.45);
}
.brand-text small{display:block;font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.16em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;padding:9px 15px;border-radius:999px;
  font-size:15px;font-weight:600;color:rgba(229,242,255,.82);
  transition:color .22s ease,background .22s ease,box-shadow .22s ease;
}
.nav-links a:hover{color:#fff;background:rgba(34,211,238,.1);}
.nav-links a.active{
  color:#eafcff;background:rgba(34,211,238,.14);
  box-shadow:inset 0 0 0 1px rgba(34,211,238,.42),0 0 18px rgba(34,211,238,.22);
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.04);border:1px solid rgba(148,163,184,.26);
  color:var(--text);cursor:pointer;transition:all .24s ease;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(34,211,238,.6);box-shadow:var(--glow);}
.btn-nav{padding:10px 22px;font-size:14.5px;}
.offcanvas{
  background:rgba(9,15,30,.96);color:var(--text);
  backdrop-filter:blur(18px);border-left:1px solid rgba(34,211,238,.26);
}
.offcanvas-header{border-bottom:1px solid rgba(148,163,184,.16);padding:20px 22px;}
.offcanvas-body{padding:18px 22px 40px;}
.mobile-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;font-size:16.5px;font-weight:600;color:var(--text);
  border-bottom:1px solid rgba(148,163,184,.12);
}
.mobile-nav a:hover,.mobile-nav a.active{color:var(--primary);}
.btn-close{filter:invert(1) sepia(1) saturate(6) hue-rotate(150deg);opacity:.85;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  min-height:86vh;display:flex;align-items:center;
  padding:96px 0 80px;
  background-image:linear-gradient(100deg,rgba(5,8,20,.94) 0%,rgba(5,8,20,.78) 46%,rgba(5,8,20,.5) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(34,211,238,.06) 0 1px,transparent 1px 5px);
  opacity:.5;
}
.hero::after{
  content:"";position:absolute;left:-10%;bottom:-30%;width:60%;height:70%;
  background:radial-gradient(circle,rgba(124,255,107,.16),transparent 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.hero h1{
  font-size:clamp(2rem,5vw,4.2rem);
  line-height:1.18;margin:16px 0 20px;letter-spacing:-.01em;
}
.hero h1 .hl{
  background:linear-gradient(100deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:16.5px;color:rgba(229,242,255,.86);max-width:640px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;}
.hero-points span{
  font-size:13.5px;color:rgba(229,242,255,.78);
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid rgba(148,163,184,.2);
}
.hero-side{position:relative;}
.stat-card{padding:26px 24px;}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.stat-item .num{
  font-size:1.9rem;font-weight:800;
  background:linear-gradient(120deg,#fff,var(--primary));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-item .lbl{font-size:13px;color:var(--muted);}
.hero-figure{
  margin-top:20px;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.1);box-shadow:var(--shadow);
}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* ---------- trust bar ---------- */
.trust-bar{padding:30px 0;background:rgba(10,18,36,.72);border-bottom:1px solid rgba(148,163,184,.12);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.trust-item{display:flex;align-items:center;gap:12px;font-size:14.5px;color:rgba(229,242,255,.86);}
.trust-item i{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  color:var(--primary);background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.24);flex:0 0 auto;
}

/* ---------- pain ---------- */
.pain-card{padding:26px 24px;height:100%;}
.pain-card .idx{
  font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.16em;margin-bottom:12px;display:block;
}
.pain-card h3{font-size:1.16rem;margin-bottom:10px;}
.pain-card p{color:var(--muted);font-size:14.5px;margin:0;}

/* ---------- solution ---------- */
.solution-figure{border-radius:var(--radius-lg);overflow:hidden;border:1px solid rgba(255,255,255,.1);box-shadow:var(--shadow);}
.solution-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.step-list{position:relative;padding-left:34px;margin-top:8px;}
.step-list::before{
  content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--primary),rgba(124,255,107,.5),transparent);
}
.step{position:relative;padding:0 0 26px 0;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:-30px;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--bg);border:2px solid var(--primary);box-shadow:0 0 12px rgba(34,211,238,.7);
}
.step h3{font-size:1.12rem;margin-bottom:6px;}
.step p{color:var(--muted);font-size:14.8px;margin:0;}

/* ---------- results ---------- */
.result-panel{padding:30px 26px;}
.progress-row{margin-bottom:20px;}
.progress-row:last-child{margin-bottom:0;}
.progress-row .pr-top{display:flex;justify-content:space-between;font-size:14.5px;margin-bottom:8px;}
.progress-row .pr-top span:last-child{color:var(--primary);font-weight:700;}
.bar{height:8px;border-radius:999px;background:rgba(148,163,184,.16);overflow:hidden;}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--accent));box-shadow:0 0 14px rgba(34,211,238,.5);}
.result-figure{border-radius:var(--radius-lg);overflow:hidden;border:1px solid rgba(255,255,255,.1);position:relative;}
.result-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;}

/* ---------- testimonials ---------- */
.scroll-x{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 20px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.scroll-x::-webkit-scrollbar{height:6px;}
.scroll-x::-webkit-scrollbar-thumb{background:rgba(34,211,238,.35);border-radius:999px;}
.quote-card{
  flex:0 0 380px;scroll-snap-align:start;padding:26px 24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.quote-card .stars{color:var(--accent);font-size:13px;margin-bottom:12px;letter-spacing:2px;}
.quote-card p{font-size:15px;color:rgba(229,242,255,.88);}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:16px;}
.quote-avatar{
  width:42px;height:42px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(34,211,238,.28),rgba(124,255,107,.24));
  border:1px solid rgba(34,211,238,.35);font-weight:700;color:#eafcff;font-size:14px;
}
.quote-user b{display:block;font-size:14.5px;}
.quote-user small{color:var(--muted);font-size:12.5px;}

/* ---------- news ---------- */
.news-feature{display:block;height:100%;overflow:hidden;border-radius:var(--radius);}
.news-feature img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease;}
.news-feature:hover img{transform:scale(1.04);}
.news-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  border-radius:var(--radius);background:var(--panel);
  border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 18px 48px rgba(0,0,0,.4);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.45);box-shadow:0 26px 60px rgba(0,0,0,.55),0 0 0 1px rgba(34,211,238,.14);}
.news-card .thumb{overflow:hidden;}
.news-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease;}
.news-card:hover .thumb img{transform:scale(1.05);}
.news-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px;font-size:12.8px;color:var(--muted);}
.news-card h3{font-size:1.06rem;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card h3 a{color:#fff;}
.news-card h3 a:hover{color:var(--primary);}
.news-card .excerpt{
  color:var(--muted);font-size:14.2px;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;}
.news-feature-large .body{padding:26px 24px;}
.news-feature-large h3{font-size:1.4rem;-webkit-line-clamp:2;}
.empty-state{
  padding:56px 24px;text-align:center;border-radius:var(--radius);
  background:rgba(15,23,42,.6);border:1px dashed rgba(148,163,184,.3);
}
.empty-state i{font-size:30px;color:var(--primary);margin-bottom:14px;display:block;}
.empty-state p{color:var(--muted);margin-bottom:16px;}

/* ---------- faq ---------- */
.accordion-item{
  background:rgba(15,23,42,.66);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius)!important;margin-bottom:12px;overflow:hidden;
  backdrop-filter:blur(12px);
}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(34,211,238,.45);box-shadow:0 0 0 1px rgba(34,211,238,.16);}
.accordion-button{
  background:transparent;color:#fff;font-weight:600;font-size:1.02rem;
  padding:20px 22px;box-shadow:none;border:0;
}
.accordion-button:not(.collapsed){color:var(--primary);background:rgba(34,211,238,.06);}
.accordion-button::after{
  background-image:none;content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;
  display:grid;place-items:center;font-size:14px;color:var(--primary);
  transition:transform .3s ease;width:26px;height:26px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-body{padding:4px 22px 22px;color:var(--muted);font-size:14.8px;border-left:2px solid transparent;}
.accordion-item:has(.accordion-button:not(.collapsed)) .accordion-body{border-left-color:var(--primary);}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  padding:64px 48px;
  background-image:linear-gradient(115deg,rgba(5,8,20,.93),rgba(10,18,36,.82)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border:1px solid rgba(34,211,238,.3);
  box-shadow:0 0 60px rgba(34,211,238,.16);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,255,107,.22),transparent 68%);
}
.cta-band h2{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:14px;}
.cta-band p{color:rgba(229,242,255,.85);max-width:640px;margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:20px;padding-top:0;
  background:linear-gradient(180deg,rgba(5,8,20,.4),#03060f 40%);
  border-top:1px solid rgba(148,163,184,.12);
}
.footer-topline{height:2px;background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);}
.footer-main{padding:64px 0 40px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;color:#fff;font-weight:800;font-size:17px;}
.footer-desc{color:var(--muted);font-size:14.2px;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:#fff;letter-spacing:.02em;}
.footer-col a,.footer-col li{display:block;color:var(--muted);font-size:14.2px;margin-bottom:11px;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid rgba(148,163,184,.12);
  padding:22px 0;color:var(--muted);font-size:13.2px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
}
.back-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;z-index:1040;
  background:rgba(15,23,42,.8);border:1px solid rgba(34,211,238,.42);color:var(--primary);
  backdrop-filter:blur(12px);box-shadow:var(--glow);cursor:pointer;
  opacity:0;visibility:hidden;transition:all .3s ease;
}
.back-top.show{opacity:1;visibility:visible;}
.back-top:hover{background:rgba(34,211,238,.16);color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .section{padding:72px 0;}
  .hero{min-height:auto;padding:80px 0 68px;}
  .quote-card{flex:0 0 330px;}
}
@media (max-width:991px){
  .nav-links,.nav-actions .btn-nav,.nav-actions .icon-btn{display:none;}
  .hero{padding:64px 0 56px;}
  .hero-side{margin-top:36px;}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .section{padding:60px 0;}
  .cta-band{padding:48px 30px;}
}
@media (max-width:767px){
  .section{padding:48px 0;}
  .container{padding-left:18px;padding-right:18px;}
  .hero h1{font-size:clamp(1.75rem,7.6vw,2.4rem);}
  .hero-lead{font-size:15.5px;}
  .hero-cta .btn-glow,.hero-cta .btn-ghost{width:100%;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .quote-card{flex:0 0 88%;}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%;}
}
@media (max-width:575px){
  .trust-grid{grid-template-columns:1fr;}
  .section{padding:42px 0;}
  .cta-band{padding:38px 22px;}
  .footer-main{padding:48px 0 28px;}
  .stat-item .num{font-size:1.6rem;}
}

/* roulang page: article */
:root{
  --bg:#050814;
  --bg-2:#0A1224;
  --panel:rgba(15,23,42,.72);
  --panel-2:rgba(255,255,255,.06);
  --line:rgba(148,163,184,.18);
  --primary:#22D3EE;
  --primary-2:#3B82F6;
  --accent:#7CFF6B;
  --text:#E5F2FF;
  --muted:#94A3B8;
  --danger:#FB7185;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.45);
  --container:1280px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(148,163,184,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,163,184,.055) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 72%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(700px 420px at 12% -6%,rgba(34,211,238,.14),transparent 68%),
    radial-gradient(620px 380px at 88% 4%,rgba(124,255,107,.09),transparent 70%);
}
a{color:inherit;text-decoration:none;transition:color .22s ease}
a:hover{color:var(--primary)}
img{max-width:100%;display:block}
button,input,textarea{font-family:inherit}
h1,h2,h3,h4{font-weight:700;line-height:1.28;letter-spacing:.01em;margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.container{max-width:var(--container);padding:0 24px;position:relative;z-index:1}

/* 顶栏 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(5,8,20,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  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,rgba(34,211,238,.85),rgba(124,255,107,.6),transparent);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:82px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#03121c;font-size:16px;
  box-shadow:var(--glow);
}
.brand-text{font-size:1.08rem;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  position:relative;
  padding:9px 16px;border-radius:999px;
  font-size:.95rem;color:#c9dcf0;
  transition:all .24s ease;
}
.nav-links a:hover{color:var(--primary);background:rgba(34,211,238,.08)}
.nav-links a.active{
  color:#04141d;
  background:linear-gradient(120deg,var(--primary),var(--accent));
  box-shadow:0 0 20px rgba(34,211,238,.45);
  font-weight:700;
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:12px}
.btn-glow{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;border:0;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#02121b;font-weight:700;font-size:.9rem;
  box-shadow:0 0 0 rgba(34,211,238,0);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.btn-glow:hover{color:#02121b;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 28px rgba(34,211,238,.55)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;
  border:1px solid rgba(148,163,184,.35);
  background:rgba(255,255,255,.04);
  color:var(--text);font-size:.9rem;font-weight:600;
  transition:all .22s ease;
}
.btn-ghost:hover{color:var(--primary);border-color:rgba(34,211,238,.6);background:rgba(34,211,238,.1);transform:translateY(-2px)}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:var(--text);font-size:1rem;
}
.menu-toggle:hover{border-color:rgba(34,211,238,.55);color:var(--primary)}

/* 面包屑 */
.crumb-wrap{padding:26px 0 6px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:.85rem;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.55}
.crumb .current{color:var(--primary)}

/* 文章头 */
.article-hero{
  position:relative;
  padding:26px 0 56px;
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.2;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 88%);
  mask-image:linear-gradient(180deg,#000,transparent 88%);
}
.article-hero .container{position:relative;z-index:2}
.hero-panel{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  padding:34px 36px;
  position:relative;
  overflow:hidden;
}
.hero-panel::after{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent),var(--primary-2));
  opacity:.9;
}
.badge-cat{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 15px;border-radius:999px;
  font-size:.78rem;font-weight:700;letter-spacing:.04em;
  color:var(--primary);
  background:rgba(34,211,238,.12);
  border:1px solid rgba(34,211,238,.38);
}
.article-title{
  font-size:clamp(1.72rem,3.5vw,2.85rem);
  line-height:1.26;
  margin:20px 0 20px;
  font-weight:800;
  max-width:20em;
}
.article-meta{display:flex;flex-wrap:wrap;gap:14px 26px;color:var(--muted);font-size:.86rem}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:8px}
.article-meta i{color:var(--primary);font-size:.9rem}
.cover-wrap{
  margin-top:30px;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  position:relative;
}
.cover-wrap img{width:100%;aspect-ratio:16/7;object-fit:cover;transition:transform .6s ease}
.cover-wrap:hover img{transform:scale(1.03)}
.cover-wrap::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(5,8,20,.55));
  pointer-events:none;
}

/* 正文布局 */
.article-section{padding:10px 0 76px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.article-main{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-lg);
  padding:38px 40px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.article-body{max-width:860px;font-size:16.5px;color:#d6e6f7}
.article-body > * + *{margin-top:1.15em}
.article-body h2{
  font-size:clamp(1.3rem,2.2vw,1.62rem);
  margin-top:2em;
  padding-left:16px;
  position:relative;
  color:#f3fbff;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  box-shadow:0 0 14px rgba(34,211,238,.6);
}
.article-body h3{
  font-size:1.16rem;
  margin-top:1.6em;
  color:#eaf6ff;
}
.article-body p{line-height:1.9}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(34,211,238,.35)}
.article-body a:hover{color:var(--accent);border-color:var(--accent)}
.article-body ul,.article-body ol{padding-left:1.4em}
.article-body ul li,.article-body ol li{margin:.5em 0;color:#cfdff2}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:22px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 10px rgba(34,211,238,.8);
}
.article-body ol{list-style:decimal}
.article-body ol li::marker{color:var(--primary);font-weight:700}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  background:rgba(34,211,238,.06);
  border-left:3px solid var(--primary);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#cfe6f7;
  box-shadow:inset 0 0 40px rgba(34,211,238,.05);
}
.article-body img{border-radius:var(--radius);margin:1.6em auto;border:1px solid var(--line)}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;
  border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;font-size:.94rem;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:rgba(34,211,238,.1);color:#e9f8ff;font-weight:700}
.article-body tr:last-child td{border-bottom:0}
.article-body code{
  background:rgba(34,211,238,.12);padding:2px 7px;border-radius:6px;
  color:var(--accent);font-size:.9em;
}

/* 侧栏 */
.article-side{position:sticky;top:104px;display:flex;flex-direction:column;gap:22px}
.side-card{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);
  padding:22px 22px 24px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .25s ease,transform .25s ease;
}
.side-card:hover{border-color:rgba(34,211,238,.45)}
.side-title{
  font-size:.95rem;font-weight:800;letter-spacing:.06em;
  display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#eaf6ff;
}
.side-title i{color:var(--primary)}
.toc-list a{
  display:block;
  padding:8px 12px;
  border-radius:var(--radius-sm);
  font-size:.9rem;color:var(--muted);
  border-left:2px solid transparent;
  transition:all .2s ease;
}
.toc-list a:hover{color:var(--primary);background:rgba(34,211,238,.08)}
.toc-list a.is-active{
  color:var(--primary);
  background:rgba(34,211,238,.1);
  border-left-color:var(--primary);
  box-shadow:inset 0 0 18px rgba(34,211,238,.12);
}
.toc-list a.level-3{padding-left:24px;font-size:.85rem}
.related-item{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(148,163,184,.18)}
.related-item:last-child{border-bottom:0;padding-bottom:0}
.related-item img{width:70px;height:52px;object-fit:cover;border-radius:10px;flex-shrink:0;border:1px solid var(--line)}
.related-item h4{font-size:.9rem;font-weight:600;line-height:1.5;color:#dbeaf9;transition:color .2s ease}
.related-item:hover h4{color:var(--primary)}
.related-item span{display:block;font-size:.76rem;color:var(--muted);margin-top:4px}

/* 空态 */
.empty-state{
  text-align:center;padding:56px 20px;
  border:1px dashed rgba(148,163,184,.3);
  border-radius:var(--radius);
  background:rgba(255,255,255,.03);
}
.empty-state i{font-size:2rem;color:var(--primary);margin-bottom:14px;display:block}
.empty-state h2{font-size:1.3rem;margin-bottom:10px}
.empty-state p{color:var(--muted);margin-bottom:20px}

/* FAQ */
.faq-section{padding:8px 0 76px}
.section-head{margin-bottom:34px;max-width:720px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;letter-spacing:.16em;font-weight:700;
  color:var(--primary);text-transform:uppercase;margin-bottom:14px;
}
.section-head h2{font-size:clamp(1.5rem,3vw,2.15rem);margin-bottom:12px}
.section-head p{color:var(--muted);font-size:.98rem}
.accordion-item{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius)!important;
  margin-bottom:12px;
  overflow:hidden;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  position:relative;
  transition:border-color .25s ease;
}
.accordion-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  opacity:0;transition:opacity .25s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed))::before{opacity:1}
.accordion-item:hover{border-color:rgba(34,211,238,.4)}
.accordion-button{
  background:transparent;color:#eaf6ff;font-weight:600;font-size:1.02rem;
  padding:18px 22px;box-shadow:none!important;
}
.accordion-button:not(.collapsed){color:var(--primary);background:rgba(34,211,238,.07)}
.accordion-button::after{
  background-image:none;
  content:"\2b";
  font-family:"Font Awesome 6 Free";font-weight:900;
  transition:transform .3s ease;
  width:auto;height:auto;font-size:.95rem;color:var(--primary);
  display:grid;place-items:center;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-body{color:#c8dbef;font-size:.95rem;line-height:1.88;padding:4px 22px 22px}

/* CTA */
.cta-band{padding:0 0 86px}
.cta-inner{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid rgba(34,211,238,.28);
  padding:56px 48px;
  background-image:linear-gradient(120deg,rgba(5,8,20,.9),rgba(10,18,36,.78)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  box-shadow:var(--shadow),0 0 60px rgba(34,211,238,.12) inset;
}
.cta-inner::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,255,107,.28),transparent 68%);
  pointer-events:none;
}
.cta-inner h2{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:14px;max-width:18em}
.cta-inner p{color:#bed3e8;max-width:52em;margin-bottom:28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 页脚 */
.site-footer{position:relative;background:#03060f;border-top:1px solid var(--line);z-index:1}
.footer-topline{height:2px;background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent)}
.footer-main{padding:58px 0 34px}
.footer-brand{display:flex;align-items:center;gap:12px;font-size:1.1rem;font-weight:800;margin-bottom:16px}
.footer-desc{color:var(--muted);font-size:.92rem;max-width:34em;line-height:1.85}
.footer-col h4{font-size:.92rem;letter-spacing:.08em;color:#dceaf8;margin-bottom:16px}
.footer-col a{display:block;color:var(--muted);font-size:.9rem;padding:5px 0}
.footer-col a:hover{color:var(--primary)}
.footer-col ul li{color:var(--muted);font-size:.88rem;padding:5px 0;line-height:1.7}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid rgba(148,163,184,.14);
  padding:20px 0 30px;font-size:.82rem;color:#7c8ea4;
}
.to-top{
  position:fixed;right:26px;bottom:30px;z-index:1040;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;border:1px solid rgba(34,211,238,.4);
  background:rgba(15,23,42,.78);color:var(--primary);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--glow);opacity:0;visibility:hidden;
  transition:all .3s ease;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-3px);background:rgba(34,211,238,.16);color:var(--accent)}

@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:28px}
  .article-main{padding:32px 30px}
  .article-title{font-size:clamp(1.6rem,4vw,2.3rem)}
}
@media (max-width:991px){
  .header-inner{height:72px}
  .menu-toggle{display:grid;place-items:center}
  .nav-links{
    position:fixed;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:rgba(5,8,20,.97);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);
    padding:18px 24px 26px;
    transform:translateY(-14px);opacity:0;visibility:hidden;
    transition:all .28s ease;
  }
  .nav-links.open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-links a{padding:13px 16px;font-size:1rem}
  .header-actions .btn-glow{display:none}
  .article-layout{grid-template-columns:1fr}
  .article-side{position:static}
  .article-body{max-width:none}
  .article-hero{padding:20px 0 44px}
  .hero-panel{padding:26px 24px}
  .cover-wrap img{aspect-ratio:16/9}
  .article-section{padding-bottom:56px}
  .faq-section{padding-bottom:56px}
  .cta-band{padding-bottom:64px}
  .cta-inner{padding:40px 26px}
}
@media (max-width:575px){
  .container{padding:0 18px}
  .brand-text{font-size:.98rem}
  .article-title{font-size:1.5rem}
  .article-main{padding:24px 20px;border-radius:var(--radius)}
  .hero-panel{border-radius:var(--radius)}
  .article-body{font-size:15.6px}
  .article-meta{gap:10px 18px;font-size:.8rem}
  .cta-actions{flex-direction:column}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%;justify-content:center}
  .footer-bottom{flex-direction:column;gap:8px}
  .to-top{right:16px;bottom:18px}
}

/* roulang page: category1 */
:root{
  --bg:#050814;
  --bg-2:#0A1224;
  --panel:rgba(15,23,42,.72);
  --panel-2:rgba(255,255,255,.06);
  --line:rgba(148,163,184,.18);
  --primary:#22D3EE;
  --primary-2:#3B82F6;
  --accent:#7CFF6B;
  --text:#E5F2FF;
  --muted:#94A3B8;
  --danger:#FB7185;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.45);
  --space-section:88px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(34,211,238,.14), transparent 62%),
    radial-gradient(760px 460px at 92% 8%, rgba(124,255,107,.09), transparent 60%),
    radial-gradient(700px 600px at 50% 108%, rgba(59,130,246,.12), transparent 65%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.05;
  background-image:linear-gradient(rgba(148,163,184,.6) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(148,163,184,.6) 1px, transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--text);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--primary);}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:800;line-height:1.25;letter-spacing:.2px;}
p{margin:0 0 1.1em;}
ul{margin:0;padding-left:1.1em;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.container{max-width:1280px;padding-left:24px;padding-right:24px;position:relative;z-index:1;}
.section{padding:var(--space-section) 0;position:relative;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(1.5rem,3vw,2.4rem);}
.section-head p{color:var(--muted);font-size:15.5px;margin-bottom:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:2px;color:var(--primary);
  text-transform:uppercase;font-weight:700;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));box-shadow:var(--glow);}

/* ============ NAV ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(5,8,20,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  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,rgba(34,211,238,.85),rgba(124,255,107,.55),transparent);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:80px;}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:18.5px;color:var(--text);white-space:nowrap;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(34,211,238,.95),rgba(59,130,246,.85));
  color:#04121b;font-size:16px;box-shadow:var(--glow);
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;padding:9px 15px;border-radius:999px;
  font-size:15px;font-weight:600;color:rgba(229,242,255,.78);
  transition:.24s ease;white-space:nowrap;
}
.nav-links a:hover{color:var(--primary);background:rgba(34,211,238,.08);}
.nav-links a.active{
  color:#04121b;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 20px rgba(34,211,238,.4);
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--panel-2);color:var(--text);display:grid;place-items:center;
  transition:.24s ease;
}
.icon-btn:hover{border-color:rgba(34,211,238,.55);color:var(--primary);box-shadow:var(--glow);}
.btn-neon{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;border:0;
  font-size:15px;font-weight:700;color:#04121b;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 10px 28px rgba(34,211,238,.32);
  transition:.26s ease;
}
.btn-neon:hover{color:#04121b;transform:translateY(-2px);box-shadow:0 14px 36px rgba(34,211,238,.5);filter:brightness(1.06);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;
  border:1px solid rgba(148,163,184,.35);
  background:rgba(255,255,255,.04);color:var(--text);
  font-size:15px;font-weight:600;transition:.26s ease;
}
.btn-ghost:hover{color:var(--primary);border-color:rgba(34,211,238,.6);background:rgba(34,211,238,.1);transform:translateY(-2px);}
.btn-link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:700;font-size:14.5px;}
.btn-link-arrow i{transition:transform .24s ease;}
.btn-link-arrow:hover i{transform:translateX(5px);}
.navbar-toggler-custom{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--panel-2);color:var(--text);display:grid;place-items:center;
}
@media (max-width:1199px){
  .nav-links a{padding:8px 11px;font-size:14.5px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .nav-actions .btn-neon{display:none;}
}
.offcanvas{background:rgba(8,13,28,.97);color:var(--text);backdrop-filter:blur(18px);border-right:1px solid var(--line);}
.offcanvas-header{border-bottom:1px solid var(--line);}
.offcanvas-title{font-weight:800;font-size:17px;}
.btn-close-custom{width:40px;height:40px;border-radius:12px;border:1px solid rgba(34,211,238,.4);background:rgba(34,211,238,.12);color:var(--primary);display:grid;place-items:center;}
.oc-links{display:flex;flex-direction:column;gap:10px;margin-top:22px;}
.oc-links a{
  padding:15px 18px;border-radius:14px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);font-weight:700;font-size:16px;
}
.oc-links a.active{color:#04121b;background:linear-gradient(135deg,var(--primary),var(--accent));border-color:transparent;}

/* ============ BANNER ============ */
.cat-banner{
  position:relative;overflow:hidden;
  padding:96px 0 84px;
  border-bottom:1px solid var(--line);
}
.cat-banner-bg{
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.34;
  transform:scale(1.03);
}
.cat-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(5,8,20,.96) 0%,rgba(5,8,20,.82) 45%,rgba(5,8,20,.6) 100%);
}
.cat-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(34,211,238,.06) 0 1px,transparent 1px 5px);
  opacity:.5;
}
.banner-inner{position:relative;z-index:2;max-width:840px;}
.breadcrumb-wrap{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted);margin-bottom:22px;}
.breadcrumb-wrap a{color:var(--muted);}
.breadcrumb-wrap a:hover{color:var(--primary);}
.breadcrumb-wrap .current{color:var(--primary);font-weight:600;}
.cat-banner h1{
  font-size:clamp(2rem,4.6vw,3.4rem);
  line-height:1.2;margin-bottom:20px;
}
.cat-banner h1 .hl{
  background:linear-gradient(120deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.banner-lead{font-size:16.5px;color:rgba(229,242,255,.82);max-width:720px;margin-bottom:30px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:42px;}
.banner-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;max-width:720px;}
.stat-card{
  padding:18px 20px;border-radius:var(--radius);
  background:var(--panel);border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.stat-card strong{display:block;font-size:24px;font-weight:800;color:var(--primary);line-height:1.3;}
.stat-card span{font-size:13.5px;color:var(--muted);}
@media (max-width:767px){
  .cat-banner{padding:64px 0 56px;}
  .banner-stats{grid-template-columns:1fr;}
  .banner-actions .btn-neon,.banner-actions .btn-ghost{width:100%;justify-content:center;}
}

/* ============ STICKY TOC + CONTENT ============ */
.toc-panel{
  position:sticky;top:108px;
  padding:26px 24px;border-radius:var(--radius-lg);
  background:var(--panel);border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
.toc-panel h3{font-size:15px;letter-spacing:1px;color:var(--muted);text-transform:uppercase;margin-bottom:16px;font-weight:700;}
.toc-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px;}
.toc-list a{
  display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:12px;
  font-size:14.5px;font-weight:600;color:rgba(229,242,255,.76);
  border-left:2px solid transparent;transition:.22s ease;
}
.toc-list a:hover{background:rgba(34,211,238,.09);color:var(--primary);border-left-color:var(--primary);}
.toc-note{
  margin-top:20px;padding:14px 16px;border-radius:var(--radius-sm);
  background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.24);
  font-size:13.5px;color:rgba(229,242,255,.8);line-height:1.7;
}
@media (max-width:991px){
  .toc-panel{position:static;margin-bottom:32px;}
}

.check-card{
  padding:26px 26px 24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:.28s ease;height:100%;
}
.check-card:hover{
  transform:translateY(-4px);
  border-color:rgba(34,211,238,.45);
  box-shadow:0 22px 52px rgba(0,0,0,.5),0 0 22px rgba(34,211,238,.16);
}
.check-card .cc-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.cc-icon{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.3);color:var(--primary);font-size:16px;
}
.check-card h3{font-size:1.14rem;margin:0;}
.check-card p{font-size:14.6px;color:rgba(229,242,255,.74);margin-bottom:14px;}
.mini-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px;}
.mini-list li{display:flex;gap:9px;font-size:14px;color:var(--muted);line-height:1.7;}
.mini-list li i{color:var(--accent);margin-top:5px;font-size:12px;}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(124,255,107,.12);border:1px solid rgba(124,255,107,.3);color:var(--accent);
}
.tag.blue{background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.3);color:var(--primary);}

/* ============ TIMELINE ============ */
.flow-wrap{position:relative;padding-left:52px;}
.flow-wrap::before{
  content:"";position:absolute;left:17px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(34,211,238,.85),rgba(124,255,107,.5),rgba(34,211,238,.12));
  box-shadow:0 0 14px rgba(34,211,238,.35);
}
.flow-item{position:relative;padding:0 0 34px 0;}
.flow-item:last-child{padding-bottom:0;}
.flow-dot{
  position:absolute;left:-52px;top:2px;width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;font-weight:800;font-size:14px;color:#04121b;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 18px rgba(34,211,238,.5);
}
.flow-item h3{font-size:1.2rem;margin-bottom:8px;}
.flow-item p{font-size:15px;color:rgba(229,242,255,.76);margin-bottom:8px;}
.flow-item .meta{font-size:13px;color:var(--muted);}

/* ============ SPLIT IMAGE ============ */
.split-card{
  border-radius:var(--radius-lg);overflow:hidden;
  background:var(--panel);border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.split-card img{width:100%;height:100%;object-fit:cover;min-height:300px;}
.split-body{padding:34px 34px 30px;}
.split-body h3{font-size:1.45rem;}
.split-body p{font-size:15px;color:rgba(229,242,255,.76);}
.split-body .mini-list li{color:rgba(229,242,255,.8);}
@media (max-width:767px){
  .split-body{padding:24px 20px;}
}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius) !important;
  margin-bottom:12px;
  overflow:hidden;
  backdrop-filter:blur(14px);
}
.faq-accordion .accordion-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:transparent;transition:.24s ease;
}
.faq-accordion .accordion-item{position:relative;}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed))::before{
  background:linear-gradient(180deg,var(--primary),var(--accent));
  box-shadow:0 0 16px rgba(34,211,238,.5);
}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text);
  font-size:1.02rem;font-weight:700;
  padding:20px 24px;border:0;box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--primary);background:rgba(34,211,238,.06);}
.faq-accordion .accordion-button:focus{box-shadow:none;}
.faq-accordion .accordion-button::after{
  background-image:none;content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;
  color:var(--primary);font-size:14px;width:26px;height:26px;
  display:grid;place-items:center;border-radius:8px;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.28);
  transform:none;transition:transform .28s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-accordion .accordion-body{
  padding:4px 24px 22px;color:rgba(229,242,255,.78);
  font-size:15px;line-height:1.85;
}
.faq-accordion .accordion-body p:last-child{margin-bottom:0;}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  padding:64px 56px;
  border:1px solid rgba(34,211,238,.24);
  background:linear-gradient(120deg,rgba(9,16,34,.94),rgba(11,24,45,.88));
  box-shadow:var(--shadow);
}
.cta-band-bg{
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  opacity:.2;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 300px at 88% 12%, rgba(124,255,107,.14), transparent 70%);
}
.cta-inner{position:relative;z-index:2;max-width:720px;}
.cta-inner h2{font-size:clamp(1.5rem,3vw,2.2rem);}
.cta-inner p{color:rgba(229,242,255,.8);font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:8px;}
@media (max-width:767px){
  .cta-band{padding:40px 24px;border-radius:var(--radius);}
  .cta-actions .btn-neon,.cta-actions .btn-ghost{width:100%;justify-content:center;}
}

/* ============ FOOTER ============ */
.site-footer{position:relative;background:#03060f;border-top:1px solid var(--line);margin-top:20px;}
.footer-topline{height:2px;background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);}
.footer-main{padding:64px 0 40px;}
.footer-brand{display:flex;align-items:center;gap:12px;font-size:18.5px;font-weight:800;margin-bottom:16px;}
.footer-desc{color:var(--muted);font-size:14.5px;max-width:340px;line-height:1.85;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text);letter-spacing:.6px;}
.footer-col a{display:block;color:var(--muted);font-size:14.5px;margin-bottom:11px;}
.footer-col a:hover{color:var(--primary);}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col ul li{color:var(--muted);font-size:14.5px;margin-bottom:11px;line-height:1.7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 30px;border-top:1px solid var(--line);
  color:var(--muted);font-size:13.5px;
}
@media (max-width:575px){
  .footer-main{padding:44px 0 28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
#backTop{
  position:fixed;right:22px;bottom:26px;z-index:1040;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(15,23,42,.8);border:1px solid rgba(34,211,238,.4);
  color:var(--primary);backdrop-filter:blur(12px);
  box-shadow:0 0 20px rgba(34,211,238,.28);
  opacity:0;visibility:hidden;transition:.28s ease;
}
#backTop.show{opacity:1;visibility:visible;}
#backTop:hover{transform:translateY(-3px);}

/* roulang page: category2 */
:root{
  --bg:#050814;
  --bg-2:#0A1224;
  --panel:rgba(15,23,42,.72);
  --panel-2:rgba(255,255,255,.06);
  --line:rgba(148,163,184,.18);
  --primary:#22D3EE;
  --primary-2:#3B82F6;
  --accent:#7CFF6B;
  --text:#E5F2FF;
  --muted:#94A3B8;
  --danger:#FB7185;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.45);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(760px 440px at 10% -8%,rgba(34,211,238,.13),transparent 62%),
    radial-gradient(680px 420px at 92% 6%,rgba(124,255,107,.07),transparent 60%),
    radial-gradient(900px 620px at 50% 112%,rgba(59,130,246,.13),transparent 66%);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--accent)}
button{font-family:inherit}
h1,h2,h3,h4,h5{font-weight:700;letter-spacing:-.01em;line-height:1.3;margin:0 0 14px}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(34,211,238,.32);color:#fff}
.container{width:100%;padding-left:22px;padding-right:22px;margin:0 auto}
@media (min-width:1200px){.container{max-width:1240px}}
@media (min-width:1400px){.container{max-width:1280px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(5,8,20,.84);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent),var(--primary-2),transparent);
  opacity:.75;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:80px;
}
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  color:var(--text);
  font-weight:800;
  font-size:1.02rem;
  white-space:nowrap;
}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#04121b;
  font-size:.95rem;
  box-shadow:var(--glow);
  flex:0 0 auto;
}
.brand-text{letter-spacing:.4px;background:linear-gradient(90deg,#E5F2FF,#8FE8FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  border-radius:999px;
  font-size:.93rem;
  font-weight:600;
  color:var(--muted);
  transition:color .25s ease,background .25s ease,box-shadow .25s ease;
}
.nav-links a:hover{color:var(--primary);background:rgba(34,211,238,.09)}
.nav-links a.active{
  color:#03151d;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:var(--glow);
}
.nav-links a.active:hover{color:#03151d}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:42px;height:42px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--muted);
  cursor:pointer;
  transition:.25s ease;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(34,211,238,.55);box-shadow:var(--glow)}
.nav-toggle{
  width:44px;height:44px;
  display:none;
  place-items:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  cursor:pointer;
  font-size:1.05rem;
}
.nav-toggle:hover{border-color:rgba(34,211,238,.55);color:var(--primary)}
@media (max-width:991.98px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .header-actions .btn-glow{display:none}
}

/* 移动端玻璃抽屉 */
.glass-nav{
  background:rgba(8,13,28,.96)!important;
  backdrop-filter:blur(20px);
  border-left:1px solid var(--line);
  color:var(--text);
}
.glass-nav .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:20px 22px;
}
.glass-nav .offcanvas-title{font-weight:800;font-size:1rem;color:var(--text)}
.btn-close-glow{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid rgba(34,211,238,.4);
  background:rgba(34,211,238,.1);
  color:var(--primary);
  cursor:pointer;
  transition:.25s ease;
}
.btn-close-glow:hover{box-shadow:var(--glow);color:#fff}
.glass-nav .offcanvas-body{padding:18px 22px 40px}
.glass-nav .offcanvas-body a{
  display:block;
  padding:16px 18px;
  margin-bottom:10px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--text);
  font-weight:600;
  font-size:1rem;
}
.glass-nav .offcanvas-body a:hover,
.glass-nav .offcanvas-body a.active{
  border-color:rgba(34,211,238,.55);
  color:var(--primary);
  box-shadow:var(--glow);
}

/* ============ 按钮 ============ */
.btn-glow,.btn-ghost,.btn-linkarrow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  font-weight:700;
  font-size:.95rem;
  border-radius:999px;
  padding:13px 26px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn-glow{
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#03151d;
  box-shadow:0 10px 30px rgba(34,211,238,.25);
}
.btn-glow:hover{
  color:#03151d;
  transform:translateY(-2px);
  box-shadow:0 0 30px rgba(34,211,238,.6);
  filter:brightness(1.07);
}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{
  color:var(--primary);
  border-color:rgba(34,211,238,.55);
  background:rgba(34,211,238,.1);
  transform:translateY(-2px);
}
.btn-linkarrow{
  padding:6px 0;
  color:var(--primary);
  background:transparent;
}
.btn-linkarrow i{transition:transform .25s ease}
.btn-linkarrow:hover{color:var(--accent)}
.btn-linkarrow:hover i{transform:translateX(5px)}
.btn-glow:focus-visible,.btn-ghost:focus-visible,.btn-linkarrow:focus-visible,
.nav-links a:focus-visible,.icon-btn:focus-visible,.nav-toggle:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
}
.btn-sm{padding:10px 20px;font-size:.88rem}

/* ============ 通用板块 ============ */
main{position:relative;z-index:1}
.section{position:relative;z-index:1;padding:88px 0}
.section-tight{padding:64px 0}
.bg-deep{background:linear-gradient(180deg,rgba(10,18,36,.72),rgba(5,8,20,.2))}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  margin-bottom:16px;
  border-radius:999px;
  border:1px solid rgba(34,211,238,.35);
  background:rgba(34,211,238,.09);
  color:var(--primary);
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.06em;
}
h2{font-size:clamp(1.5rem,3vw,2.35rem)}
h3{font-size:1.3rem}
h4{font-size:1.08rem;font-weight:700}
.sec-sub{color:var(--muted);font-size:1rem;line-height:1.9;margin:0}
.muted{color:var(--muted)}
.small-note{font-size:.83rem;color:var(--muted);line-height:1.7}

/* ============ 分类横幅 ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  padding:52px 0 84px;
  background:var(--bg-2);
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.34;
  filter:saturate(1.15);
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg,rgba(5,8,20,.78),rgba(5,8,20,.9) 58%,var(--bg) 100%);
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(34,211,238,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,211,238,.09) 1px,transparent 1px);
  background-size:58px 58px;
  mask-image:radial-gradient(circle at 30% 20%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000,transparent 78%);
  opacity:.6;
}
.cat-hero-inner{position:relative;z-index:2}
.crumb{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:.84rem;
  color:var(--muted);
  margin-bottom:26px;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb em{font-style:normal;color:var(--primary);font-weight:600}
.cat-hero h1{
  font-size:clamp(1.85rem,4.2vw,3.15rem);
  line-height:1.24;
  font-weight:800;
  margin-bottom:20px;
}
.cat-hero h1 span{
  background:linear-gradient(100deg,var(--primary),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.lead{
  color:#BFD6E8;
  font-size:1.02rem;
  line-height:1.95;
  max-width:640px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 16px;
  margin-bottom:20px;
  border-radius:999px;
  border:1px solid rgba(124,255,107,.35);
  background:rgba(124,255,107,.08);
  color:var(--accent);
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.04em;
}

/* 玻璃面板 */
.glass{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease;
}
.glass:hover{
  border-color:rgba(34,211,238,.45);
  transform:translateY(-4px);
  box-shadow:0 26px 70px rgba(0,0,0,.5),0 0 26px rgba(34,211,238,.22),inset 0 1px 0 rgba(255,255,255,.08);
}
.timeline-card{padding:28px 26px}
.timeline-card h3{
  font-size:1.08rem;
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:20px;
}
.timeline-card h3 i{color:var(--primary)}
.node-list li{
  position:relative;
  padding:0 0 20px 24px;
  border-left:1px solid var(--line);
}
.node-list li:last-child{border-left-color:transparent;padding-bottom:0}
.node-list li::before{
  content:"";
  position:absolute;
  left:-5px;
  top:8px;
  width:9px;height:9px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:var(--glow);
}
.node-list b{display:block;font-size:.96rem;font-weight:700;color:var(--text)}
.node-list span{font-size:.85rem;color:var(--muted);line-height:1.7}

/* ============ 横向滚动卡组 ============ */
.hscroll-wrap{position:relative}
.hscroll{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:6px 4px 26px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.hscroll::-webkit-scrollbar{height:8px}
.hscroll::-webkit-scrollbar-track{background:rgba(255,255,255,.05);border-radius:999px}
.hscroll::-webkit-scrollbar-thumb{background:linear-gradient(90deg,var(--primary),var(--primary-2));border-radius:999px}
.hscroll{scrollbar-width:thin;scrollbar-color:var(--primary) rgba(255,255,255,.06)}
.hcard{
  flex:0 0 336px;
  scroll-snap-align:start;
  padding:20px;
  display:flex;
  flex-direction:column;
}
.hcard-thumb{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  margin-bottom:18px;
  aspect-ratio:16/9;
  border:1px solid var(--line);
}
.hcard-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.hcard:hover .hcard-thumb img{transform:scale(1.06)}
.hcard-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,8,20,.05),rgba(5,8,20,.62));
}
.hcard h3{font-size:1.08rem;margin-bottom:10px}
.hcard p{font-size:.9rem;color:var(--muted);line-height:1.85;margin:0 0 16px}
.hcard .card-foot{margin-top:auto}
.badge-soft{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  border:1px solid rgba(34,211,238,.3);
  background:rgba(34,211,238,.08);
  color:var(--primary);
  font-size:.76rem;
  font-weight:700;
  letter-spacing:.03em;
}
.badge-green{
  border-color:rgba(124,255,107,.32);
  background:rgba(124,255,107,.08);
  color:var(--accent);
}
.scroll-hint{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:.83rem;
  color:var(--muted);
  margin-top:4px;
}
.scroll-hint i{color:var(--primary)}

/* ============ 交错图文 ============ */
.zig-row{margin-bottom:56px}
.zig-row:last-child{margin-bottom:0}
@media (min-width:992px){
  .zig-row.reverse{flex-direction:row-reverse}
}
.zig-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.zig-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.zig-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(140deg,rgba(34,211,238,.16),transparent 55%);
  pointer-events:none;
}
.zig-body h3{font-size:clamp(1.25rem,2.2vw,1.6rem);margin-bottom:16px}
.zig-body p{color:var(--muted);line-height:1.95}
.tick-list{margin-top:20px}
.tick-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:11px 0;
  border-bottom:1px dashed rgba(148,163,184,.16);
  font-size:.92rem;
  color:#C6D8E8;
}
.tick-list li:last-child{border-bottom:0}
.tick-list i{color:var(--accent);margin-top:5px;font-size:.82rem}

/* ============ 对比表 ============ */
.table-wrap{
  overflow-x:auto;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--panel);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.cmp-table{width:100%;border-collapse:separate;border-spacing:0;min-width:760px}
.cmp-table th,.cmp-table td{
  padding:18px 20px;
  text-align:left;
  border-bottom:1px solid var(--line);
  font-size:.93rem;
  vertical-align:top;
}
.cmp-table thead th{
  background:rgba(34,211,238,.07);
  color:var(--primary);
  font-weight:700;
  font-size:.95rem;
  white-space:nowrap;
}
.cmp-table tbody th{
  color:var(--text);
  font-weight:700;
  background:rgba(255,255,255,.02);
  white-space:nowrap;
}
.cmp-table td{color:var(--muted)}
.cmp-table tbody tr:last-child th,
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:hover td{color:#C9DCEB;background:rgba(34,211,238,.03)}

/* ============ 编号流程 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:28px 24px;
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease;
}
.step:hover{border-color:rgba(34,211,238,.45);transform:translateY(-4px);box-shadow:0 0 26px rgba(34,211,238,.2)}
.step-num{
  display:inline-grid;
  place-items:center;
  width:44px;height:44px;
  border-radius:14px;
  margin-bottom:16px;
  font-weight:800;
  font-size:1rem;
  color:#03151d;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:var(--glow);
}
.step h3{font-size:1.05rem;margin-bottom:10px}
.step p{font-size:.9rem;color:var(--muted);line-height:1.85;margin:0}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-bottom:40px;
}
.stat-box{
  padding:28px 24px;
  border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(15,23,42,.85),rgba(10,18,36,.6));
  border:1px solid var(--line);
  transition:border-color .3s ease,box-shadow .3s ease;
}
.stat-box:hover{border-color:rgba(34,211,238,.45);box-shadow:0 0 26px rgba(34,211,238,.18)}
.stat-num{
  font-size:clamp(1.8rem,3.4vw,2.6rem);
  font-weight:800;
  line-height:1.1;
  background:linear-gradient(100deg,var(--primary),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  margin-bottom:8px;
}
.stat-label{font-size:.95rem;font-weight:700;margin-bottom:6px}
.stat-desc{font-size:.85rem;color:var(--muted);line-height:1.75;margin:0}
.progress-item{margin-bottom:26px}
.progress-item:last-child{margin-bottom:0}
.progress-head{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  font-size:.92rem;
  margin-bottom:10px;
}
.progress-head b{font-weight:700}
.progress-head span{color:var(--primary);font-weight:700}
.progress{
  height:10px;
  border-radius:999px;
  background:rgba(255,255,255,.07);
  overflow:hidden;
}
.progress-bar{
  background:linear-gradient(90deg,var(--primary),var(--accent));
  box-shadow:0 0 16px rgba(34,211,238,.6);
}

/* ============ FAQ ============ */
.accordion-item{
  background:var(--panel);
  border:1px solid var(--line)!important;
  border-radius:var(--radius)!important;
  margin-bottom:12px;
  overflow:hidden;
  backdrop-filter:blur(14px);
  transition:border-color .3s ease,box-shadow .3s ease;
}
.accordion-item:hover{border-color:rgba(34,211,238,.34)!important}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-weight:600;
  font-size:1.02rem;
  line-height:1.6;
  padding:19px 22px;
  box-shadow:none!important;
}
.accordion-button:not(.collapsed){
  color:var(--primary);
  background:rgba(34,211,238,.06);
  box-shadow:inset 3px 0 0 var(--primary)!important;
}
.accordion-button::after{
  content:"+";
  background-image:none!important;
  width:auto;height:auto;
  font-size:1.45rem;
  line-height:1;
  color:var(--primary);
  display:grid;
  place-items:center;
  margin-left:auto;
  transition:transform .3s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-body{
  padding:6px 24px 24px;
  color:var(--muted);
  font-size:.94rem;
  line-height:1.9;
}
.accordion-body p:last-child{margin-bottom:0}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  padding:78px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.26;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(5,8,20,.94),rgba(10,18,36,.86));
}
.cta-inner{position:relative;z-index:2;max-width:760px}
.cta-inner h2{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:16px}
.cta-inner p{color:#C3D6E5;font-size:1rem;line-height:1.95;margin-bottom:28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:1;
  background:#03060F;
  padding-top:0;
}
.footer-topline{
  height:2px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent),var(--primary-2),transparent);
  opacity:.8;
}
.footer-main{padding:64px 0 40px}
.footer-brand{
  display:flex;
  align-items:center;
  gap:11px;
  font-size:1.05rem;
  font-weight:800;
  margin-bottom:18px;
  color:var(--text);
}
.footer-desc{color:var(--muted);font-size:.9rem;line-height:1.9;max-width:360px;margin:0}
.footer-col h4{
  font-size:.95rem;
  font-weight:700;
  color:var(--text);
  margin-bottom:18px;
}
.footer-col a{
  display:block;
  color:var(--muted);
  font-size:.9rem;
  padding:6px 0;
}
.footer-col a:hover{color:var(--primary)}
.footer-col ul li{
  color:var(--muted);
  font-size:.88rem;
  line-height:1.9;
  padding:5px 0;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  padding:22px 0 34px;
  border-top:1px solid var(--line);
  color:#64748B;
  font-size:.83rem;
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;
  right:22px;
  bottom:26px;
  z-index:1040;
  width:48px;height:48px;
  display:grid;
  place-items:center;
  border-radius:50%;
  border:1px solid rgba(34,211,238,.4);
  background:rgba(10,18,36,.85);
  color:var(--primary);
  backdrop-filter:blur(12px);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transition:.3s ease;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{box-shadow:var(--glow);color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .section{padding:74px 0}
  .hcard{flex:0 0 310px}
}
@media (max-width:991.98px){
  .section{padding:60px 0}
  .cat-hero{padding:38px 0 66px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stat-strip{grid-template-columns:1fr 1fr}
  .zig-row{margin-bottom:44px}
  .zig-row.reverse .zig-body{margin-top:24px}
}
@media (max-width:767.98px){
  .header-inner{min-height:70px}
  .brand{font-size:.94rem}
  .brand-mark{width:34px;height:34px}
  .section{padding:52px 0}
  .cat-hero{padding:30px 0 54px}
  .lead{font-size:.96rem}
  .hero-actions .btn-glow,
  .hero-actions .btn-ghost{width:100%}
  .cta-actions .btn-glow,
  .cta-actions .btn-ghost{width:100%}
  .hcard{flex:0 0 84%}
  .stat-strip{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .sec-head{margin-bottom:32px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .cat-hero h1{font-size:1.6rem}
  .hcard{flex:0 0 88%;padding:16px}
  .timeline-card{padding:22px 18px}
  .accordion-button{font-size:.96rem;padding:16px 18px}
  .accordion-body{padding:4px 18px 20px}
  .footer-main{padding:48px 0 30px}
  .to-top{right:14px;bottom:18px;width:44px;height:44px}
}

/* roulang page: category4 */
:root{
  --bg:#050814;
  --bg-2:#0A1224;
  --panel:rgba(15,23,42,.72);
  --panel-2:rgba(255,255,255,.06);
  --line:rgba(148,163,184,.18);
  --primary:#22D3EE;
  --primary-2:#3B82F6;
  --accent:#7CFF6B;
  --text:#E5F2FF;
  --muted:#94A3B8;
  --danger:#FB7185;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.45);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:var(--font);font-size:16px;line-height:1.82;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(780px 420px at 10% -8%, rgba(34,211,238,.15), transparent 62%),
    radial-gradient(700px 400px at 98% 6%, rgba(59,130,246,.13), transparent 60%),
    radial-gradient(680px 480px at 50% 108%, rgba(124,255,107,.07), transparent 64%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(148,163,184,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,.055) 1px, transparent 1px);
  background-size:58px 58px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.85), rgba(0,0,0,.15) 70%, transparent);
}
a{color:var(--primary);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--accent);}
img{max-width:100%;height:auto;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.01em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.container,.container-fluid{max-width:1260px;padding-left:24px;padding-right:24px;}
.section{padding:88px 0;position:relative;}
.section-tight{padding:64px 0;}
.section-label{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.82rem;letter-spacing:.14em;color:var(--primary);
  text-transform:uppercase;margin-bottom:.9rem;font-weight:600;
}
.section-label::before{
  content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--primary),transparent);
}
.section-title{font-size:clamp(1.5rem,3vw,2.4rem);margin-bottom:.75rem;}
.section-desc{color:var(--muted);max-width:760px;font-size:16px;}
.divider-neon{height:1px;background:linear-gradient(90deg,transparent,rgba(34,211,238,.5),transparent);border:0;margin:0;}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,11,24,.82);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  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,rgba(34,211,238,.75),rgba(124,255,107,.5),transparent);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:1.2rem;
  min-height:82px;
}
.brand{
  display:inline-flex;align-items:center;gap:.65rem;
  color:var(--text);font-weight:800;font-size:1.06rem;letter-spacing:.02em;white-space:nowrap;
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(34,211,238,.9),rgba(59,130,246,.85));
  color:#04121c;font-size:1rem;box-shadow:var(--glow);
}
.nav-links{display:flex;align-items:center;gap:.35rem;}
.nav-links a{
  position:relative;padding:.55rem .95rem;border-radius:999px;
  color:var(--muted);font-size:.95rem;font-weight:500;transition:all .24s ease;
}
.nav-links a:hover{color:var(--primary);background:rgba(34,211,238,.08);}
.nav-links a.active{
  color:#04121c;font-weight:700;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:0 8px 24px rgba(34,211,238,.32);
}
.header-actions{display:flex;align-items:center;gap:.6rem;}
.icon-btn{
  width:42px;height:42px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--panel-2);border:1px solid var(--line);color:var(--text);
  cursor:pointer;transition:all .24s ease;
}
.icon-btn:hover{border-color:rgba(34,211,238,.55);color:var(--primary);box-shadow:var(--glow);}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.72rem 1.55rem;border-radius:999px;font-weight:700;font-size:.95rem;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04121c;border:1px solid rgba(34,211,238,.5);
  box-shadow:0 10px 28px rgba(34,211,238,.28);
  transition:transform .24s ease, box-shadow .24s ease, filter .24s ease;
}
.btn-glow:hover{
  color:#04121c;transform:translateY(-2px);filter:brightness(1.06);
  box-shadow:0 16px 40px rgba(34,211,238,.45),0 0 26px rgba(34,211,238,.4);
}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.72rem 1.55rem;border-radius:999px;font-weight:600;font-size:.95rem;
  background:rgba(255,255,255,.04);border:1px solid rgba(148,163,184,.32);color:var(--text);
  transition:all .24s ease;
}
.btn-ghost:hover{color:var(--primary);border-color:rgba(34,211,238,.6);background:rgba(34,211,238,.08);}
.link-arrow{display:inline-flex;align-items:center;gap:.4rem;font-weight:600;color:var(--primary);}
.link-arrow i{transition:transform .24s ease;}
.link-arrow:hover i{transform:translateX(4px);}
.menu-toggle{display:none;}
.drawer-brand{display:flex;align-items:center;gap:.6rem;font-weight:800;color:var(--text);}
.offcanvas.glass-drawer{
  background:linear-gradient(180deg,rgba(10,18,36,.98),rgba(5,8,20,.99));
  color:var(--text);border-left:1px solid rgba(34,211,238,.28);width:320px;
}
.glass-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:1.2rem 1.4rem;}
.glass-drawer .offcanvas-body{padding:1.4rem;display:flex;flex-direction:column;gap:.4rem;}
.drawer-close{
  width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.05);
  border:1px solid var(--line);color:var(--text);display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{color:var(--primary);box-shadow:var(--glow);}
.drawer-link{
  padding:.9rem 1rem;border-radius:14px;color:var(--muted);font-weight:600;
  border:1px solid transparent;transition:all .22s ease;
}
.drawer-link:hover,.drawer-link.active{
  color:var(--text);background:rgba(34,211,238,.1);border-color:rgba(34,211,238,.4);
}
.drawer-cta{margin-top:1rem;}

/* ============ page hero ============ */
.page-hero{position:relative;overflow:hidden;padding:84px 0 72px;border-bottom:1px solid var(--line);}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(100deg, rgba(5,8,20,.96) 8%, rgba(5,8,20,.78) 52%, rgba(5,8,20,.52) 100%),
    repeating-linear-gradient(0deg, rgba(34,211,238,.05) 0 1px, transparent 1px 5px);
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb-wrap{
  display:flex;align-items:center;gap:.5rem;font-size:.85rem;color:var(--muted);margin-bottom:1.1rem;
  flex-wrap:wrap;
}
.breadcrumb-wrap a{color:var(--muted);}
.breadcrumb-wrap a:hover{color:var(--primary);}
.breadcrumb-wrap .current{color:var(--primary);}
.badge-pill{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.34rem .9rem;border-radius:999px;font-size:.78rem;font-weight:600;letter-spacing:.04em;
  background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.35);color:var(--primary);
}
.page-hero h1{
  font-size:clamp(2rem,4.6vw,3.4rem);line-height:1.2;margin:1.1rem 0 1rem;max-width:900px;
}
.page-hero h1 .hl{
  background:linear-gradient(120deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:#c7d8ea;font-size:clamp(1rem,1.6vw,1.1rem);max-width:720px;line-height:1.85;}
.hero-tags{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.6rem;}
.tag{
  padding:.36rem .95rem;border-radius:999px;font-size:.82rem;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:#bfd3e6;
}
.tag i{color:var(--accent);margin-right:.32rem;}

/* ============ glass card ============ */
.glass{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .28s ease, transform .28s ease, box-shadow .28s ease;
}
.glass:hover{
  border-color:rgba(34,211,238,.45);
  transform:translateY(-4px);
  box-shadow:0 26px 64px rgba(0,0,0,.5), 0 0 26px rgba(34,211,238,.18);
}

/* ============ resource cards ============ */
.resource-feature{
  display:flex;flex-direction:column;overflow:hidden;height:100%;
}
.resource-feature .rf-media{position:relative;}
.resource-feature img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.resource-feature .rf-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,20,.05),rgba(5,8,20,.85));
}
.resource-feature .rf-body{padding:1.6rem 1.7rem 1.8rem;}
.resource-feature h3{font-size:1.32rem;margin-bottom:.6rem;}
.resource-feature p{color:var(--muted);font-size:.95rem;}
.mini-card{padding:1.5rem 1.5rem 1.6rem;height:100%;}
.mini-card .mc-icon{
  width:46px;height:46px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.32);color:var(--primary);
  font-size:1.05rem;margin-bottom:1rem;
}
.mini-card h3{font-size:1.12rem;margin-bottom:.5rem;}
.mini-card p{color:var(--muted);font-size:.92rem;}
.mini-card ul{margin:0;padding-left:1.1rem;color:var(--muted);font-size:.92rem;}
.mini-card ul li{margin-bottom:.3rem;}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;counter-reset:step;}
.step{
  position:relative;padding:1.6rem 1.4rem 1.5rem;
  background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);
  backdrop-filter:blur(14px);
  transition:border-color .28s ease, transform .28s ease;
}
.step:hover{border-color:rgba(34,211,238,.45);transform:translateY(-4px);}
.step::before{
  counter-increment:step;content:"0" counter(step);
  display:block;font-size:1.55rem;font-weight:800;letter-spacing:.04em;
  background:linear-gradient(120deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:.7rem;
}
.step h3{font-size:1.05rem;margin-bottom:.45rem;}
.step p{color:var(--muted);font-size:.9rem;}

/* ============ filter bar ============ */
.filter-bar{padding:1.4rem 1.5rem;margin-bottom:2.2rem;}
.filter-row{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between;}
.search-box{
  position:relative;flex:1 1 320px;max-width:460px;
}
.search-box i{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:.92rem;
}
.search-box input{
  width:100%;padding:.78rem 1rem .78rem 2.7rem;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text);
  transition:border-color .24s ease, box-shadow .24s ease;
}
.search-box input::placeholder{color:#7d8ea3;}
.search-box input:focus{
  outline:none;border-color:rgba(34,211,238,.7);box-shadow:0 0 0 4px rgba(34,211,238,.12),var(--glow);
}
.filter-chips{display:flex;flex-wrap:wrap;gap:.5rem;}
.filter-chip{
  padding:.48rem 1.05rem;border-radius:999px;font-size:.86rem;font-weight:600;cursor:pointer;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--muted);
  transition:all .22s ease;
}
.filter-chip:hover{color:var(--primary);border-color:rgba(34,211,238,.5);}
.filter-chip.active{
  color:#04121c;background:linear-gradient(120deg,var(--primary),var(--primary-2));
  border-color:transparent;box-shadow:0 8px 22px rgba(34,211,238,.32);
}

/* ============ faq ============ */
.faq-group{margin-bottom:2.6rem;}
.faq-group-title{
  display:flex;align-items:center;gap:.65rem;font-size:1.22rem;margin-bottom:1.1rem;
}
.faq-group-title i{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  font-size:.92rem;background:rgba(124,255,107,.1);border:1px solid rgba(124,255,107,.3);color:var(--accent);
}
.faq-accordion .accordion-item{
  background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-sm);
  margin-bottom:12px;overflow:hidden;
  backdrop-filter:blur(12px);
  transition:border-color .24s ease, box-shadow .24s ease;
}
.faq-accordion .accordion-item:hover{border-color:rgba(34,211,238,.35);}
.faq-accordion .accordion-button{
  position:relative;width:100%;padding:1.05rem 3.2rem 1.05rem 1.6rem;
  background:transparent;color:var(--text);font-size:1.04rem;font-weight:600;line-height:1.6;
  box-shadow:none;border:0;
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:transparent;transition:background .26s ease, box-shadow .26s ease;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--primary);background:rgba(34,211,238,.06);
}
.faq-accordion .accordion-button:not(.collapsed)::before{
  background:linear-gradient(180deg,var(--primary),var(--accent));box-shadow:var(--glow);
}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:none;}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--primary);outline-offset:-2px;}
.faq-accordion .accordion-button::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  background-image:none;width:auto;height:auto;
  position:absolute;right:1.4rem;top:50%;transform:translateY(-50%);
  color:var(--primary);font-size:.82rem;transition:transform .3s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg);color:var(--accent);}
.faq-accordion .accordion-body{
  padding:.4rem 1.7rem 1.35rem;color:#c3d6e8;font-size:.95rem;line-height:1.92;
}
.faq-accordion .accordion-body p{margin-bottom:.75rem;}
.faq-accordion .accordion-body p:last-child{margin-bottom:0;}
.faq-empty{
  display:none;text-align:center;padding:2.6rem 1.5rem;
  background:var(--panel);border:1px dashed rgba(34,211,238,.35);border-radius:var(--radius);
}
.faq-empty i{font-size:1.8rem;color:var(--primary);margin-bottom:.8rem;display:block;}
.faq-empty p{color:var(--muted);}

/* ============ trust strip ============ */
.trust-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;
  padding:1.6rem;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(34,211,238,.09),rgba(59,130,246,.06));
  border:1px solid rgba(34,211,238,.22);
}
.trust-item{display:flex;align-items:center;gap:.8rem;}
.trust-item i{
  width:40px;height:40px;border-radius:12px;flex:0 0 40px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--primary);
}
.trust-item strong{display:block;font-size:.98rem;}
.trust-item span{font-size:.84rem;color:var(--muted);}

/* ============ related ============ */
.related-card{overflow:hidden;height:100%;display:flex;flex-direction:column;}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.85;}
.related-card .rc-body{padding:1.35rem 1.4rem 1.5rem;display:flex;flex-direction:column;flex:1;}
.related-card h3{font-size:1.08rem;margin-bottom:.5rem;}
.related-card p{color:var(--muted);font-size:.9rem;flex:1;}

/* ============ cta ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  padding:64px 48px;border:1px solid rgba(34,211,238,.28);
  box-shadow:var(--shadow);
}
.cta-band .cta-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28;
}
.cta-band .cta-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(5,8,20,.94), rgba(5,8,20,.72));
}
.cta-inner{position:relative;z-index:2;max-width:680px;}
.cta-band h2{font-size:clamp(1.5rem,2.8vw,2.2rem);margin-bottom:.8rem;}
.cta-band p{color:#c3d6e8;margin-bottom:1.6rem;}
.cta-actions{display:flex;flex-wrap:wrap;gap:.9rem;}

/* ============ footer ============ */
.site-footer{position:relative;background:#03060F;margin-top:24px;}
.footer-topline{
  height:1px;background:linear-gradient(90deg,transparent,rgba(34,211,238,.7),rgba(124,255,107,.45),transparent);
}
.footer-main{padding:64px 0 40px;}
.footer-brand{
  display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.08rem;color:var(--text);margin-bottom:1rem;
}
.footer-desc{color:var(--muted);font-size:.92rem;max-width:340px;}
.footer-col h4{
  font-size:.98rem;margin-bottom:1rem;color:var(--text);letter-spacing:.02em;
}
.footer-col a{
  display:block;color:var(--muted);font-size:.92rem;padding:.28rem 0;transition:color .22s ease,transform .22s ease;
}
.footer-col a:hover{color:var(--primary);transform:translateX(3px);}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col ul li{color:var(--muted);font-size:.92rem;padding:.28rem 0;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  padding:22px 0 30px;border-top:1px solid rgba(148,163,184,.14);
  color:#7d8ea3;font-size:.85rem;
}

/* ============ back to top ============ */
.to-top{
  position:fixed;right:22px;bottom:26px;width:48px;height:48px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(15,23,42,.86);border:1px solid rgba(34,211,238,.4);color:var(--primary);
  backdrop-filter:blur(12px);box-shadow:0 12px 32px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s ease;z-index:1040;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{box-shadow:var(--glow);}

/* ============ responsive ============ */
@media (max-width:1199.98px){
  .section{padding:72px 0;}
  .page-hero{padding:72px 0 60px;}
  .steps{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-cta{display:none;}
  .section{padding:60px 0;}
  .trust-strip{grid-template-columns:repeat(2,1fr);}
  .cta-band{padding:52px 32px;}
  .footer-main{padding:52px 0 32px;}
}
@media (max-width:767.98px){
  .container,.container-fluid{padding-left:18px;padding-right:18px;}
  .page-hero{padding:56px 0 48px;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .hero-tags{gap:.45rem;}
  .tag{font-size:.78rem;}
  .steps{grid-template-columns:1fr;}
  .filter-row{flex-direction:column;align-items:stretch;}
  .search-box{max-width:none;}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575.98px){
  .page-hero h1{font-size:1.78rem;}
  .section-title{font-size:1.4rem;}
  .mini-card{padding:1.25rem;}
  .trust-strip{grid-template-columns:1fr;padding:1.2rem;}
  .faq-accordion .accordion-button{padding:1rem 2.8rem 1rem 1.25rem;font-size:.98rem;}
  .faq-accordion .accordion-body{padding:.3rem 1.3rem 1.2rem;}
  .cta-band{padding:40px 22px;}
}

/* roulang page: category3 */
:root{
  --bg:#050814;
  --bg-2:#0A1224;
  --panel:rgba(15,23,42,.72);
  --panel-2:rgba(255,255,255,.06);
  --line:rgba(148,163,184,.18);
  --line-strong:rgba(34,211,238,.45);
  --primary:#22D3EE;
  --primary-2:#3B82F6;
  --accent:#7CFF6B;
  --text:#E5F2FF;
  --muted:#94A3B8;
  --danger:#FB7185;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.45);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Hiragino Sans GB",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(720px 420px at 12% -6%, rgba(34,211,238,.14), transparent 60%),
    radial-gradient(640px 400px at 92% 4%, rgba(59,130,246,.13), transparent 62%),
    radial-gradient(560px 360px at 50% 108%, rgba(124,255,107,.07), transparent 65%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.5;
  background-image:
    linear-gradient(rgba(148,163,184,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,.055) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%, #000 10%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%, #000 10%, transparent 78%);
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--text);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.container{max-width:1240px;padding-left:24px;padding-right:24px;position:relative;z-index:2;}
::selection{background:rgba(34,211,238,.35);color:#fff;}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(5,8,20,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  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,rgba(34,211,238,.75),rgba(124,255,107,.5),transparent);
  opacity:.85;
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:78px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-weight:800;
  font-size:1.05rem;
  letter-spacing:.4px;
  color:var(--text);
  white-space:nowrap;
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(34,211,238,.22),rgba(59,130,246,.18));
  border:1px solid rgba(34,211,238,.45);
  color:var(--primary);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 0 18px rgba(34,211,238,.28);
  font-size:.92rem;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-links a{
  position:relative;
  padding:9px 14px;
  border-radius:999px;
  font-size:.94rem;
  font-weight:500;
  color:#B9CDE4;
  transition:all .25s ease;
}
.nav-links a:hover{
  color:var(--primary);
  background:rgba(34,211,238,.08);
}
.nav-links a.active{
  color:#04121A;
  font-weight:700;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 0 20px rgba(34,211,238,.42);
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--panel-2);
  color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all .25s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--line-strong);box-shadow:var(--glow);}
.nav-toggle{
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--panel-2);
  color:var(--primary);
  font-size:1.05rem;
}

/* ============ 按钮 ============ */
.btn-glow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 26px;
  border-radius:999px;
  border:0;
  font-weight:700;
  font-size:.95rem;
  color:#03101A;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  box-shadow:0 10px 30px rgba(34,211,238,.3);
  transition:transform .25s ease,box-shadow .25s ease,filter .25s ease;
  cursor:pointer;
}
.btn-glow:hover{
  color:#03101A;
  transform:translateY(-2px);
  filter:brightness(1.08);
  box-shadow:0 14px 40px rgba(34,211,238,.48),0 0 26px rgba(124,255,107,.3);
}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 24px;
  border-radius:999px;
  border:1px solid rgba(34,211,238,.42);
  background:rgba(34,211,238,.05);
  color:var(--text);
  font-weight:600;
  font-size:.95rem;
  transition:all .25s ease;
  cursor:pointer;
}
.btn-ghost:hover{
  color:var(--primary);
  background:rgba(34,211,238,.14);
  box-shadow:0 0 22px rgba(34,211,238,.25);
  transform:translateY(-2px);
}
.btn-nav{padding:10px 20px;font-size:.9rem;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary);font-weight:600;font-size:.92rem;
}
.btn-text i{transition:transform .25s ease;}
.btn-text:hover i{transform:translateX(5px);}

/* ============ 通用 ============ */
.glass{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.section{padding:88px 0;position:relative;}
.section-sm{padding:62px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8rem;letter-spacing:1.6px;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:14px;
  font-weight:600;
}
.eyebrow::before{
  content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--primary),transparent);
}
h1,h2,h3,h4{font-weight:700;line-height:1.28;margin:0 0 14px;color:#F2F9FF;}
h1{font-size:clamp(2rem,4.6vw,3.6rem);line-height:1.18;font-weight:800;letter-spacing:-.5px;}
h2{font-size:clamp(1.5rem,2.8vw,2.25rem);}
h3{font-size:1.28rem;}
h4{font-size:1.06rem;}
p{margin:0 0 14px;color:#C6D6E8;}
.lead{font-size:1.03rem;color:#B9CDE4;line-height:1.9;}
.muted{color:var(--muted);font-size:.9rem;}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;
  border-radius:999px;
  font-size:.78rem;
  font-weight:600;
  color:var(--primary);
  background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.32);
}
.badge-green{color:var(--accent);background:rgba(124,255,107,.1);border-color:rgba(124,255,107,.3);}
.divider-neon{height:1px;background:linear-gradient(90deg,transparent,rgba(34,211,238,.5),transparent);border:0;margin:0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ============ 面包屑 & Hero ============ */
.crumb-wrap{padding:22px 0 0;position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:.84rem;color:var(--muted);align-items:center;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--primary);font-weight:600;}

.page-hero{
  position:relative;
  margin-top:22px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  filter:saturate(.9);
}
.page-hero .hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(5,8,20,.96) 6%,rgba(5,8,20,.82) 46%,rgba(10,18,36,.55) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(34,211,238,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,211,238,.07) 1px,transparent 1px);
  background-size:52px 52px;
  opacity:.6;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:3;padding:72px 56px;}
.hero-inner h1{margin-bottom:18px;}
.hero-inner h1 .hl{
  background:linear-gradient(120deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{max-width:640px;font-size:1.02rem;color:#BFD2E6;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
  max-width:640px;
}
.stat-chip{
  padding:16px 18px;
  border-radius:var(--radius);
  background:rgba(15,23,42,.6);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(10px);
}
.stat-chip .num{
  font-size:1.5rem;font-weight:800;color:var(--primary);
  display:block;line-height:1.2;
  text-shadow:0 0 20px rgba(34,211,238,.4);
}
.stat-chip .lbl{font-size:.8rem;color:var(--muted);}

/* ============ 左右分栏 + 功能卡 ============ */
.split-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:36px;align-items:start;}
.side-panel{
  position:sticky;top:104px;
  padding:26px 24px;
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.side-panel h4{font-size:.95rem;margin-bottom:16px;color:#E5F2FF;}
.side-nav{display:flex;flex-direction:column;gap:2px;}
.side-nav a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;
  border-radius:var(--radius-sm);
  font-size:.9rem;
  color:#AFC3D8;
  border-left:2px solid transparent;
  transition:all .22s ease;
}
.side-nav a i{font-size:.72rem;color:var(--muted);}
.side-nav a:hover{
  color:var(--primary);
  background:rgba(34,211,238,.08);
  border-left-color:var(--primary);
}
.side-note{
  margin-top:20px;padding-top:18px;
  border-top:1px dashed rgba(148,163,184,.22);
  font-size:.82rem;color:var(--muted);line-height:1.75;
}
.feature-list{display:grid;gap:18px;}
.feature-card{
  display:grid;
  grid-template-columns:58px minmax(0,1fr);
  gap:20px;
  padding:24px 26px;
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 24px 60px rgba(0,0,0,.5),0 0 24px rgba(34,211,238,.2);
}
.feature-icon{
  width:58px;height:58px;
  border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;
  color:var(--primary);
  background:linear-gradient(140deg,rgba(34,211,238,.16),rgba(59,130,246,.1));
  border:1px solid rgba(34,211,238,.3);
}
.feature-card h3{margin-bottom:8px;font-size:1.12rem;}
.feature-card p{font-size:.94rem;color:#B4C6DA;margin-bottom:10px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:.76rem;
  padding:4px 12px;
  border-radius:999px;
  color:#A9C6DC;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
}

/* ============ 大图案例卡 + 进度条 ============ */
.case-block{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:44px;
  align-items:center;
}
.case-visual{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.1);
  box-shadow:var(--shadow);
}
.case-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.case-visual::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,20,.05) 40%,rgba(5,8,20,.75) 100%);
}
.case-visual .case-tag{
  position:absolute;left:20px;bottom:18px;z-index:2;
}
.metric-item{margin-bottom:20px;}
.metric-top{display:flex;justify-content:space-between;align-items:baseline;font-size:.9rem;margin-bottom:8px;}
.metric-top span:first-child{color:#CBDCEC;font-weight:600;}
.metric-top span:last-child{color:var(--primary);font-weight:700;}
.progress{
  height:8px;
  border-radius:999px;
  background:rgba(148,163,184,.15);
  overflow:hidden;
}
.progress-bar{
  border-radius:999px;
  background:linear-gradient(90deg,var(--primary-2),var(--primary),var(--accent));
  box-shadow:0 0 14px rgba(34,211,238,.45);
}

/* ============ 图文交错 ============ */
.alt-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:42px;
  align-items:center;
}
.alt-row.reverse .alt-media{order:2;}
.alt-media{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.1);
  box-shadow:var(--shadow);
  position:relative;
}
.alt-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.alt-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(34,211,238,.14),transparent 55%);
  pointer-events:none;
}
.check-list{list-style:none;padding:0;margin:0;}
.check-list li{
  position:relative;
  padding-left:30px;
  margin-bottom:12px;
  font-size:.94rem;
  color:#BCCFE2;
}
.check-list li i{
  position:absolute;left:0;top:5px;
  color:var(--accent);font-size:.85rem;
}

/* ============ 步骤时间轴 ============ */
.timeline{
  position:relative;
  padding-left:34px;
}
.timeline::before{
  content:"";
  position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--primary),rgba(59,130,246,.35),transparent);
}
.tl-item{position:relative;padding-bottom:30px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;left:-34px;top:6px;
  width:20px;height:20px;border-radius:50%;
  background:var(--bg-2);
  border:2px solid var(--primary);
  box-shadow:0 0 16px rgba(34,211,238,.55);
}
.tl-item h4{margin-bottom:6px;font-size:1.05rem;}
.tl-item p{font-size:.92rem;color:#B0C4D8;margin:0;}

/* ============ 信任 / 证言 ============ */
.trust-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.trust-item{
  padding:20px;
  border-radius:var(--radius);
  text-align:center;
  background:rgba(255,255,255,.035);
  border:1px solid rgba(255,255,255,.08);
  transition:all .25s ease;
}
.trust-item:hover{border-color:var(--line-strong);background:rgba(34,211,238,.07);}
.trust-item i{font-size:1.3rem;color:var(--primary);margin-bottom:10px;display:block;}
.trust-item span{font-size:.88rem;color:#B6C9DD;}
.quote-card{
  padding:24px 26px;
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  height:100%;
  transition:transform .28s ease,border-color .28s ease;
}
.quote-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.quote-card p{font-size:.93rem;color:#C3D5E7;margin-bottom:16px;}
.quote-meta{display:flex;align-items:center;gap:12px;font-size:.82rem;color:var(--muted);}
.avatar-dot{
  width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(34,211,238,.22),rgba(124,255,107,.16));
  border:1px solid rgba(34,211,238,.35);
  color:var(--primary);font-size:.8rem;font-weight:700;
}

/* ============ 手风琴 FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto;}
.accordion-item{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius) !important;
  margin-bottom:12px;
  overflow:hidden;
  backdrop-filter:blur(14px);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.accordion-item:hover{border-color:rgba(34,211,238,.3);}
.accordion-button{
  background:transparent;
  color:#E8F4FF;
  font-size:1rem;
  font-weight:600;
  padding:20px 22px;
  box-shadow:none !important;
  border-left:3px solid transparent;
}
.accordion-button:not(.collapsed){
  color:var(--primary);
  background:rgba(34,211,238,.06);
  border-left-color:var(--primary);
}
.accordion-button::after{
  content:"\f067";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:.72rem;
  color:var(--primary);
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid rgba(34,211,238,.4);
  display:flex;align-items:center;justify-content:center;
  background-image:none !important;
  transition:transform .3s ease,background .3s ease;
  flex-shrink:0;
  margin-left:16px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);background:rgba(34,211,238,.12);}
.accordion-body{
  padding:4px 22px 24px 25px;
  color:#B7CADD;
  font-size:.94rem;
  border-left:3px solid rgba(34,211,238,.35);
}
.accordion-body p{margin-bottom:12px;font-size:.94rem;color:#B7CADD;}
.accordion-body p:last-child{margin-bottom:0;}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(34,211,238,.28);
  box-shadow:0 26px 70px rgba(0,0,0,.5),0 0 30px rgba(34,211,238,.16);
  padding:64px 56px;
  text-align:center;
}
.cta-band .cta-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
}
.cta-band .cta-bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(5,8,20,.94),rgba(10,18,36,.86));
}
.cta-content{position:relative;z-index:2;}
.cta-content h2{margin-bottom:14px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:26px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:70px;
  background:#03060F;
  border-top:1px solid var(--line);
}
.footer-topline{
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.7),rgba(124,255,107,.45),transparent);
}
.footer-main{padding:60px 0 40px;}
.footer-brand{
  display:flex;align-items:center;gap:12px;
  font-weight:800;font-size:1.05rem;color:#F2F9FF;
  margin-bottom:16px;
}
.footer-desc{font-size:.9rem;color:#8FA6BD;max-width:340px;line-height:1.85;}
.footer-col h4{font-size:.95rem;margin-bottom:16px;color:#E5F2FF;}
.footer-col a{
  display:block;
  font-size:.88rem;
  color:#8FA6BD;
  padding:6px 0;
}
.footer-col a:hover{color:var(--primary);}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col ul li{font-size:.88rem;color:#8FA6BD;padding:6px 0;line-height:1.7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;
  padding:20px 0 34px;
  border-top:1px solid rgba(148,163,184,.14);
  font-size:.82rem;
  color:#7A8FA6;
}

/* ============ 返回顶部 & 弹窗 ============ */
.to-top{
  position:fixed;right:22px;bottom:26px;
  width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(15,23,42,.8);
  border:1px solid rgba(34,211,238,.4);
  color:var(--primary);
  backdrop-filter:blur(10px);
  box-shadow:0 0 22px rgba(34,211,238,.28);
  opacity:0;visibility:hidden;
  transform:translateY(12px);
  transition:all .3s ease;
  z-index:1030;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:rgba(34,211,238,.16);}
.modal-content{
  background:var(--bg-2);
  border:1px solid rgba(34,211,238,.28);
  border-radius:var(--radius-lg);
  color:var(--text);
  box-shadow:var(--shadow);
}
.modal-header,.modal-footer{border-color:rgba(148,163,184,.16);}
.btn-close{filter:invert(1) hue-rotate(180deg);}
.form-control,.form-select{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(148,163,184,.24);
  border-radius:12px;
  color:var(--text);
  padding:12px 16px;
  font-size:.94rem;
}
.form-control::placeholder{color:#7A8FA6;}
.form-control:focus,.form-select:focus{
  background:rgba(255,255,255,.06);
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
  color:var(--text);
}
.offcanvas{
  background:rgba(6,11,26,.96);
  backdrop-filter:blur(18px);
  border-left:1px solid rgba(34,211,238,.24);
  color:var(--text);
}
.offcanvas-header{border-bottom:1px solid rgba(148,163,184,.16);}
.offcanvas-title{font-weight:800;font-size:1rem;}
.offcanvas .m-nav{display:flex;flex-direction:column;gap:8px;padding-top:18px;}
.offcanvas .m-nav a{
  padding:14px 16px;
  border-radius:var(--radius);
  font-size:1rem;
  font-weight:600;
  color:#C3D5E7;
  border:1px solid rgba(255,255,255,.07);
  background:rgba(255,255,255,.03);
}
.offcanvas .m-nav a.active{
  color:#04121A;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-color:transparent;
  box-shadow:0 0 20px rgba(34,211,238,.4);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .split-layout{grid-template-columns:260px minmax(0,1fr);gap:28px;}
  .hero-inner{padding:60px 42px;}
  .section{padding:76px 0;}
}
@media (max-width:991px){
  .nav-inner{min-height:70px;}
  .hero-inner{padding:48px 30px;}
  .hero-stats{grid-template-columns:repeat(3,minmax(0,1fr));}
  .split-layout{grid-template-columns:1fr;}
  .side-panel{position:static;}
  .case-block{grid-template-columns:1fr;gap:30px;}
  .alt-row{grid-template-columns:1fr;gap:28px;}
  .alt-row.reverse .alt-media{order:0;}
  .trust-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{padding:48px 32px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding-left:18px;padding-right:18px;}
  .hero-inner{padding:40px 22px;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%;justify-content:center;}
  .feature-card{grid-template-columns:48px minmax(0,1fr);padding:20px;gap:16px;}
  .feature-icon{width:48px;height:48px;font-size:1rem;}
  .section{padding:52px 0;}
  .section-sm{padding:44px 0;}
  .footer-main{padding:44px 0 26px;}
  .cta-band{padding:38px 22px;}
}
@media (max-width:519px){
  h1{font-size:1.72rem;}
  h2{font-size:1.34rem;}
  .hero-stats{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
  .btn-glow,.btn-ghost{padding:11px 20px;font-size:.9rem;}
  .footer-bottom{flex-direction:column;}
  .timeline{padding-left:28px;}
  .tl-item::before{left:-28px;width:17px;height:17px;}
}