/* roulang page: index */
:root{
  --bg:#060A16;
  --bg2:#0C1224;
  --bg3:#04070F;
  --primary:#2FE6C8;
  --secondary:#7C6BFF;
  --action:#FF7A45;
  --text:#E9F0FB;
  --text2:#9FB0CC;
  --text3:#6B7C99;
  --glass:rgba(255,255,255,0.05);
  --border:rgba(140,180,255,0.14);
  --border-strong:rgba(47,230,200,0.45);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --shadow:0 12px 32px rgba(0,0,0,0.35);
  --shadow-hover:0 20px 48px rgba(47,230,200,0.12);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(680px 420px at 8% -6%, rgba(47,230,200,0.16), transparent 70%),
    radial-gradient(760px 500px at 94% 4%, rgba(124,107,255,0.14), transparent 72%),
    linear-gradient(rgba(140,180,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,180,255,0.04) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:#7FF6DF;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.grid-container{max-width:var(--maxw);width:100%;margin:0 auto;padding-left:24px;padding-right:24px;}
@media(min-width:1500px){.grid-container{max-width:1320px;}}

/* ===== 导航 ===== */
.site-header{position:sticky;top:0;z-index:60;background:rgba(6,10,22,0.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background .25s ease,border-color .25s ease;}
.site-header.is-scrolled{background:rgba(4,7,15,0.92);border-bottom-color:var(--border);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;}
.logo:hover{color:var(--text);}
.logo-mark{position:relative;width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--primary),var(--secondary));box-shadow:0 0 20px rgba(47,230,200,0.38);flex:0 0 30px;}
.logo-mark::after{content:"";position:absolute;inset:8px;border-radius:4px;background:var(--bg3);}
.logo-text{font-size:18px;font-weight:800;letter-spacing:.02em;white-space:nowrap;}
.logo-text small{font-size:12px;font-weight:600;color:var(--text2);margin-left:5px;letter-spacing:.06em;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{position:relative;display:inline-block;padding:8px 14px;font-size:15px;font-weight:600;color:var(--text2);text-decoration:none;border-radius:8px;transition:color .2s ease;}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(47,230,200,0.8);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-cta{min-height:44px;padding:0 18px;font-size:14px;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:rgba(255,255,255,0.05);align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--primary);}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--primary);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-drawer{position:fixed;top:0;right:0;height:100%;width:min(86vw,320px);padding:92px 24px 32px;background:rgba(12,18,36,0.97);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-left:1px solid var(--border);transform:translateX(105%);transition:transform .3s ease;z-index:90;display:flex;flex-direction:column;gap:6px;}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer .nav-link{display:block;padding:14px 12px;font-size:16px;border-bottom:1px solid rgba(140,180,255,0.08);}
.nav-drawer .nav-link::after{display:none;}
.drawer-mask{position:fixed;inset:0;background:rgba(4,7,15,0.66);opacity:0;visibility:hidden;transition:opacity .3s ease;z-index:85;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer-cta{margin-top:18px;}

/* ===== 通用组件 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:700;line-height:1.2;text-decoration:none;cursor:pointer;border:1px solid transparent;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,filter .22s ease;}
.btn-primary{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#04121A;box-shadow:0 8px 28px rgba(47,230,200,0.28);}
.btn-primary:hover{color:#04121A;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 16px 42px rgba(47,230,200,0.4);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:rgba(47,230,200,0.5);color:var(--primary);}
.btn-ghost:hover{background:rgba(47,230,200,0.08);border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-action{background:linear-gradient(135deg,#FF9B6F 0%,var(--action) 100%);color:#1A0A04;box-shadow:0 10px 30px rgba(255,122,69,0.28);}
.btn-action:hover{color:#1A0A04;filter:brightness(1.06);transform:translateY(-2px);}
.btn-block{width:100%;}
.card{background:var(--glass);border:1px solid var(--border);border-radius:var(--r-card);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;}
.card:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:var(--shadow-hover);}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;color:var(--primary);background:rgba(47,230,200,0.12);border:1px solid rgba(47,230,200,0.3);backdrop-filter:blur(8px);}
.badge-purple{color:#C3B9FF;background:rgba(124,107,255,0.16);border-color:rgba(124,107,255,0.34);}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--primary);margin-bottom:12px;}
.section{position:relative;padding:96px 0;}
.section-sm{padding:64px 0;}
.section-xs{padding:48px 0;}
.section-alt{background:linear-gradient(180deg,rgba(12,18,36,0.72),rgba(4,7,15,0.2));border-top:1px solid rgba(140,180,255,0.08);border-bottom:1px solid rgba(140,180,255,0.08);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
h1{font-size:40px;line-height:1.35;font-weight:800;letter-spacing:-0.01em;}
h2{font-size:28px;line-height:1.4;font-weight:800;}
h3{font-size:20px;line-height:1.5;font-weight:700;}
.lead{font-size:16px;color:var(--text2);}
.muted{color:var(--text3);font-size:14px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary);border-bottom:2px solid rgba(47,230,200,0.45);padding-bottom:2px;transition:color .2s ease,transform .2s ease,border-color .2s ease;}
.text-link:hover{color:#7FF6DF;border-color:#7FF6DF;transform:translateX(4px);}
.divider{height:1px;background:rgba(140,180,255,0.12);margin:0;}

/* ===== 首屏 ===== */
.hero{padding:72px 0 0;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-copy h1{max-width:14em;}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text2);max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.trust-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.trust-tags li{font-size:13px;color:var(--text2);padding:6px 14px;border-radius:999px;border:1px solid var(--border);background:rgba(255,255,255,0.03);}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;border:1px solid var(--border);box-shadow:0 24px 60px rgba(0,0,0,0.5);}
.glass-float{position:absolute;display:flex;flex-direction:column;gap:2px;padding:12px 16px;border-radius:14px;background:rgba(12,18,36,0.74);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--border);box-shadow:var(--shadow);}
.gf-label{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--primary);}
.gf-line{font-size:13px;color:var(--text2);white-space:nowrap;}
.gf-a{left:-18px;bottom:28px;}
.gf-b{right:-14px;top:28px;}
.hero-anchors{display:flex;flex-wrap:wrap;gap:10px;margin-top:48px;padding:16px 20px;border-radius:14px;border:1px solid var(--border);background:rgba(255,255,255,0.03);}
.hero-anchors a{font-size:14px;font-weight:600;color:var(--text2);padding:6px 12px;border-radius:8px;transition:color .2s ease,background .2s ease;}
.hero-anchors a:hover{color:var(--primary);background:rgba(47,230,200,0.08);}

/* ===== 价值主张带 ===== */
.value-list{border-top:1px solid var(--border);}
.value-row{display:grid;grid-template-columns:70px 1fr 1.15fr;gap:28px;align-items:center;padding:28px 0;border-bottom:1px solid var(--border);}
.value-no{font-size:20px;font-weight:800;color:transparent;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;font-variant-numeric:tabular-nums;}
.value-row h3{font-size:19px;}
.value-row p{font-size:15px;color:var(--text2);}

/* ===== bento 功能分组 ===== */
.bento{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:minmax(190px,auto);gap:20px;}
.bento-item{display:flex;flex-direction:column;gap:12px;padding:28px;}
.bento-item .ico{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;color:#04121A;background:linear-gradient(135deg,var(--primary),var(--secondary));}
.bento-item.b-purple .ico{background:linear-gradient(135deg,var(--secondary),#A79BFF);color:#0B0717;}
.bento-item.b-orange .ico{background:linear-gradient(135deg,#FFB18D,var(--action));color:#1A0A04;}
.bento-item p{font-size:15px;color:var(--text2);}
.bento-item .text-link{margin-top:auto;}
.b-large{grid-column:span 2;grid-row:span 2;}
.b-wide{grid-column:span 3;flex-direction:row;align-items:center;gap:24px;flex-wrap:wrap;}
.b-wide .b-wide-text{flex:1 1 320px;display:flex;flex-direction:column;gap:10px;}

/* ===== 使用场景 ===== */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:72px;}
.scene:last-child{margin-bottom:0;}
.scene--flip .scene-media{order:2;}
.scene--flip .scene-copy{order:1;}
.scene-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:18px;border:1px solid var(--border);box-shadow:var(--shadow);}
.scene-copy h3{margin:14px 0 14px;font-size:22px;}
.scene-copy p{color:var(--text2);font-size:15px;}
.scene-points{margin:20px 0 22px;display:flex;flex-direction:column;gap:10px;}
.scene-points li{position:relative;padding-left:22px;font-size:15px;color:var(--text2);}
.scene-points li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(47,230,200,0.7);}

/* ===== 案例 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.case-card{padding:20px;display:flex;flex-direction:column;gap:14px;}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;}
.case-type{font-size:13px;color:var(--text3);letter-spacing:.06em;}
.case-card p{font-size:15px;color:var(--text2);}
.case-num{font-size:34px;font-weight:800;color:var(--action);line-height:1.2;font-variant-numeric:tabular-nums;}
.case-more{margin-top:32px;text-align:center;}

/* ===== 方案 ===== */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch;}
.plan-card{position:relative;padding:28px;display:flex;flex-direction:column;gap:16px;}
.plan-card h3{font-size:20px;}
.plan-price{display:flex;align-items:baseline;gap:6px;font-variant-numeric:tabular-nums;}
.plan-price strong{font-size:40px;font-weight:800;line-height:1;}
.plan-price span{font-size:14px;color:var(--text3);}
.plan-featured{border-color:rgba(47,230,200,0.5);box-shadow:0 20px 48px rgba(47,230,200,0.12);transform:translateY(-10px);}
.plan-featured:hover{transform:translateY(-14px);}
.plan-badge{position:absolute;top:-13px;left:28px;padding:4px 14px;border-radius:999px;font-size:12px;font-weight:700;color:#1A0A04;background:linear-gradient(135deg,#FF9B6F,var(--action));}
.plan-feats{display:flex;flex-direction:column;gap:10px;margin:6px 0 4px;}
.plan-feats li{position:relative;padding-left:20px;font-size:14px;color:var(--text2);}
.plan-feats li::before{content:"›";position:absolute;left:2px;top:-1px;color:var(--primary);font-weight:800;}
.plan-card .btn{margin-top:auto;}
.plan-note{display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:center;margin-top:28px;font-size:14px;color:var(--text3);}

/* ===== 最新信息 CMS ===== */
.cms-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:20px;align-items:start;}
.cms-main{overflow:hidden;padding:0;}
.cms-main:hover{transform:translateY(-4px);}
.cms-cover{position:relative;display:block;}
.cms-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:16px 16px 0 0;transition:transform .4s ease;}
.cms-main:hover .cms-cover img{transform:scale(1.03);}
.cms-cover .badge{position:absolute;left:14px;top:14px;}
.cms-body{padding:22px 24px 24px;}
.cms-body h3{font-size:21px;margin-bottom:10px;}
.cms-body h3 a{color:var(--text);}
.cms-body h3 a:hover{color:var(--primary);}
.cms-body p{font-size:15px;color:var(--text2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-side{display:grid;gap:16px;}
.cms-item{display:grid;grid-template-columns:148px 1fr;gap:16px;padding:14px;overflow:hidden;}
.cms-item-cover{display:block;overflow:hidden;border-radius:12px;}
.cms-item-cover img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;transition:transform .4s ease;}
.cms-item:hover .cms-item-cover img{transform:scale(1.04);}
.cms-item-body{display:flex;flex-direction:column;gap:8px;min-width:0;}
.cms-item-body h3{font-size:16px;line-height:1.5;}
.cms-item-body h3 a{color:var(--text);}
.cms-item-body h3 a:hover{color:var(--primary);}
.cms-item-body p{font-size:13.5px;color:var(--text2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-item-body h3 a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text3);margin-top:auto;}
.cms-meta .arrow{color:var(--primary);font-weight:700;transition:transform .22s ease;}
.cms-item:hover .cms-meta .arrow,.cms-main:hover .cms-meta .arrow{transform:translateX(4px);}
.cms-empty{padding:40px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;color:var(--text2);}

/* ===== FAQ ===== */
.faq{border-top:1px solid var(--border);}
.faq-item{position:relative;border-bottom:1px solid var(--border);padding-left:0;transition:padding-left .25s ease;}
.faq-item::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--primary);box-shadow:0 0 12px rgba(47,230,200,0.7);opacity:0;transition:opacity .25s ease;}
.faq-item.is-open{padding-left:18px;}
.faq-item.is-open::before{opacity:1;}
.faq-q{width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;}
.faq-q:hover{color:var(--primary);}
.faq-icon{position:relative;flex:0 0 22px;width:22px;height:22px;transition:transform .25s ease;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{top:0;left:10px;width:2px;height:22px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-item.is-open .faq-a{max-height:320px;}
.faq-a p{padding:0 0 18px 20px;font-size:15px;color:var(--text2);}

/* ===== CTA 带 ===== */
.cta-band{position:relative;overflow:hidden;padding:56px;border-radius:24px;text-align:center;border:1px solid var(--border);background:linear-gradient(135deg,rgba(47,230,200,0.10),rgba(124,107,255,0.14)),rgba(255,255,255,0.04);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);}
.cta-band h2{margin-bottom:14px;}
.cta-band p{color:var(--text2);max-width:44em;margin:0 auto;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px;}

/* ===== 页脚 ===== */
.site-footer{margin-top:24px;background:rgba(4,7,15,0.72);border-top:1px solid var(--border);}
.footer-top{height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary));}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 32px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text2);max-width:26em;}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.1em;color:var(--text3);margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14.5px;color:var(--text2);}
.footer-col a:hover{color:var(--primary);}
.footer-col p{font-size:14.5px;color:var(--text2);}
.footer-contact .btn{margin-top:14px;min-height:44px;}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;padding:20px 0 32px;border-top:1px solid rgba(140,180,255,0.1);font-size:13px;color:var(--text3);}

/* ===== 表单 ===== */
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text2);margin-bottom:8px;}
.field input,.field textarea{width:100%;padding:12px 14px;border-radius:var(--r-input);background:var(--bg2);border:1px solid rgba(140,180,255,0.18);color:var(--text);transition:border-color .2s ease,box-shadow .2s ease;}
.field input::placeholder,.field textarea::placeholder{color:var(--text3);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,230,200,0.14);}

/* ===== 响应式 ===== */
@media(max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-copy h1{max-width:none;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .b-large{grid-column:span 2;grid-row:span 1;}
  .b-wide{grid-column:span 2;}
  .case-grid{grid-template-columns:1fr 1fr;}
  .plan-grid{grid-template-columns:1fr;gap:26px;}
  .plan-featured{transform:none;}
  .plan-featured:hover{transform:translateY(-4px);}
  .cms-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media(max-width:767px){
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  h1{font-size:34px;}
  h2{font-size:24px;}
  .hero{padding-top:48px;}
  .scene{grid-template-columns:1fr;gap:26px;margin-bottom:56px;}
  .scene--flip .scene-media{order:0;}
  .value-row{grid-template-columns:44px 1fr;gap:16px;}
  .value-row p{grid-column:2;}
  .case-grid{grid-template-columns:1fr;}
  .cta-band{padding:36px 22px;}
  .gf-a{left:10px;bottom:12px;}
  .gf-b{display:none;}
}
@media(max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px;}
  h1{font-size:32px;}
  .bento{grid-template-columns:1fr;}
  .b-large,.b-wide{grid-column:span 1;}
  .b-wide{flex-direction:column;align-items:flex-start;}
  .bento-item{padding:22px;}
  .cms-item{grid-template-columns:1fr;padding:14px;}
  .cms-item-cover img{aspect-ratio:16/9;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-anchors{gap:6px;padding:12px;}
  .trust-tags li{font-size:12.5px;}
  .plan-price strong{font-size:34px;}
}

/* roulang page: article */
:root{
  --bg:#060A16;
  --bg-2:#0C1224;
  --bg-3:#04070F;
  --cyan:#2FE6C8;
  --purple:#7C6BFF;
  --orange:#FF7A45;
  --text:#E9F0FB;
  --text-2:#9FB0CC;
  --text-3:#6B7C99;
  --glass:rgba(255,255,255,0.05);
  --glass-2:rgba(255,255,255,0.08);
  --line:rgba(140,180,255,0.14);
  --line-strong:rgba(47,230,200,0.45);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-card:0 12px 32px rgba(0,0,0,0.35);
  --shadow-hover:0 20px 48px rgba(47,230,200,0.12);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --sp-1:24px;
  --sp-2:48px;
  --sp-3:64px;
  --sp-4:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  top:-240px;
  left:-180px;
  width:760px;
  height:760px;
  background:radial-gradient(circle,rgba(47,230,200,0.16) 0%,rgba(47,230,200,0) 68%);
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  bottom:-260px;
  right:-200px;
  width:820px;
  height:820px;
  background:radial-gradient(circle,rgba(124,107,255,0.16) 0%,rgba(124,107,255,0) 70%);
  pointer-events:none;
  z-index:0;
}
main,header,footer{position:relative;z-index:1;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color .2s ease;}
a:hover{color:#7CF3DF;}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0 0 14px;line-height:1.35;font-weight:800;color:var(--text);}
ul,ol{margin:0 0 16px;padding-left:20px;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.grid-x{margin-left:-12px;margin-right:-12px;}
.cell{padding-left:12px;padding-right:12px;}
.section{padding-top:var(--sp-4);padding-bottom:var(--sp-4);}
.section-sm{padding-top:var(--sp-2);padding-bottom:var(--sp-2);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,10,22,0.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(4,7,15,0.88);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,0.35);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-weight:800;
  font-size:18px;
  letter-spacing:.02em;
  flex-shrink:0;
}
.logo:hover{color:var(--text);}
.logo-mark{
  width:20px;
  height:20px;
  border-radius:6px;
  background:linear-gradient(135deg,var(--cyan),var(--purple));
  box-shadow:0 0 0 1px rgba(47,230,200,0.4),0 0 18px rgba(47,230,200,0.4);
  position:relative;
  flex-shrink:0;
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:6px;
  border-radius:2px;
  background:var(--bg-3);
}
.logo-text{display:inline-flex;align-items:baseline;gap:2px;white-space:nowrap;}
.logo-text small{
  font-size:11px;
  font-weight:600;
  color:var(--cyan);
  letter-spacing:.06em;
  margin-left:3px;
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  color:var(--text-2);
  font-size:15px;
  font-weight:600;
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:4px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--purple));
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .22s ease,transform .22s ease;
  box-shadow:0 0 10px rgba(47,230,200,0.7);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,0.04);}
.nav-link:hover::after{opacity:.5;transform:scaleX(1);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text);
  transform:translateX(-50%);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0;background:var(--cyan);}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0;background:var(--cyan);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan),var(--purple));
  color:#04121A;
  box-shadow:0 0 0 1px rgba(47,230,200,0.35),0 12px 28px rgba(47,230,200,0.22);
}
.btn-primary:hover{
  color:#04121A;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(47,230,200,0.55),0 18px 42px rgba(47,230,200,0.34);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  border-color:rgba(47,230,200,0.5);
  color:var(--cyan);
}
.btn-ghost:hover{
  background:rgba(47,230,200,0.08);
  color:#7CF3DF;
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-plain{
  background:var(--glass);
  border-color:var(--line);
  color:var(--text-2);
}
.btn-plain:hover{color:var(--text);border-color:var(--line-strong);background:var(--glass-2);}
.nav-cta{min-height:42px;padding:0 18px;font-size:14px;}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.03em;
  background:rgba(47,230,200,0.12);
  border:1px solid rgba(47,230,200,0.32);
  color:var(--cyan);
}
.badge-purple{
  background:rgba(124,107,255,0.14);
  border-color:rgba(124,107,255,0.36);
  color:#B3A8FF;
}
.badge-plain{
  background:var(--glass);
  border-color:var(--line);
  color:var(--text-2);
}

/* ---------- Article head ---------- */
.page-head{
  padding-top:64px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(140,180,255,0.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(140,180,255,0.04) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.9;
  pointer-events:none;
  mask-image:radial-gradient(circle at 30% 0%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 0%,#000 0%,transparent 78%);
}
.page-head .grid-container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb .sep{color:var(--text-3);opacity:.7;}
.breadcrumb .current{color:var(--text-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.head-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.article-title{
  font-size:40px;
  line-height:1.3;
  font-weight:800;
  max-width:920px;
  margin-bottom:20px;
  letter-spacing:.01em;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-size:14px;
  color:var(--text-2);
}
.meta-item{display:inline-flex;align-items:center;gap:8px;}
.meta-item i{color:var(--cyan);font-size:13px;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);display:inline-block;}

/* ---------- Article body ---------- */
.article-section{padding-top:56px;padding-bottom:56px;}
.article-shell{
  max-width:780px;
  margin:0 auto;
}
.article-body{
  font-size:16px;
  line-height:1.9;
  color:var(--text-2);
  word-wrap:break-word;
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;
  padding-left:16px;
  margin:44px 0 18px;
  font-size:28px;
  font-weight:800;
  color:var(--text);
  line-height:1.4;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:8px;
  bottom:8px;
  width:4px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),var(--purple));
  box-shadow:0 0 12px rgba(47,230,200,0.4);
}
.article-body h3{
  position:relative;
  padding-left:14px;
  margin:32px 0 14px;
  font-size:20px;
  font-weight:700;
  color:var(--text);
}
.article-body h3::before{
  content:"";
  position:absolute;
  left:0;
  top:7px;
  bottom:7px;
  width:3px;
  border-radius:2px;
  background:rgba(47,230,200,0.65);
}
.article-body h4{
  margin:26px 0 12px;
  font-size:17px;
  font-weight:700;
  color:var(--text);
}
.article-body p{margin:0 0 20px;color:var(--text-2);}
.article-body strong{color:var(--text);font-weight:700;}
.article-body a{
  color:var(--cyan);
  border-bottom:2px solid rgba(47,230,200,0.35);
  padding-bottom:1px;
}
.article-body a:hover{color:#7CF3DF;border-bottom-color:rgba(124,243,223,0.7);}
.article-body ul,
.article-body ol{
  margin:0 0 22px;
  padding-left:22px;
}
.article-body li{margin-bottom:10px;color:var(--text-2);}
.article-body li::marker{color:var(--cyan);}
.article-body blockquote{
  margin:26px 0;
  padding:18px 22px;
  border-left:4px solid var(--cyan);
  background:var(--glass);
  border-radius:0 12px 12px 0;
  color:var(--text);
  font-size:16px;
  line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;
  border-radius:14px;
  margin:24px 0;
  border:1px solid var(--line);
}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  margin-top:8px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.article-body thead th{
  background:rgba(47,230,200,0.08);
  color:var(--text);
  font-weight:700;
  text-align:left;
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.article-body tbody td{
  padding:12px 16px;
  border-bottom:1px solid rgba(140,180,255,0.08);
  color:var(--text-2);
  vertical-align:top;
}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body code{
  background:rgba(124,107,255,0.14);
  border:1px solid rgba(124,107,255,0.28);
  border-radius:6px;
  padding:1px 6px;
  font-size:14px;
  color:#B3A8FF;
}
.article-body hr{
  border:none;
  height:1px;
  background:var(--line);
  margin:36px 0;
}
.article-body .article-lead{
  font-size:17px;
  color:var(--text);
  line-height:1.85;
}

/* ---------- Empty state ---------- */
.article-empty{
  max-width:780px;
  margin:0 auto;
  padding:48px 32px;
  text-align:center;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.article-empty .empty-icon{
  width:56px;
  height:56px;
  margin:0 auto 18px;
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,rgba(47,230,200,0.18),rgba(124,107,255,0.18));
  border:1px solid var(--line);
  color:var(--cyan);
  font-size:22px;
}
.article-empty h2{font-size:24px;margin-bottom:12px;}
.article-empty p{color:var(--text-2);max-width:460px;margin:0 auto 24px;}

/* ---------- Article foot ---------- */
.article-foot{
  max-width:780px;
  margin:44px auto 0;
  padding-top:28px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  align-items:center;
  justify-content:space-between;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .tag-label{font-size:13px;color:var(--text-3);margin-right:2px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  color:var(--text-2);
  background:var(--glass);
  border:1px solid var(--line);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag:hover{color:var(--cyan);border-color:var(--line-strong);background:rgba(47,230,200,0.08);}
.share-row{display:flex;align-items:center;gap:10px;}
.share-row .share-label{font-size:13px;color:var(--text-3);}

/* ---------- Related ---------- */
.related-section{
  padding-top:64px;
  padding-bottom:64px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,18,36,0.55) 0%,rgba(6,10,22,0) 100%);
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:32px;
}
.section-head h2{font-size:28px;margin-bottom:8px;}
.section-head p{color:var(--text-2);margin:0;font-size:15px;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:700;
  color:var(--cyan);
  border-bottom:2px solid rgba(47,230,200,0.4);
  padding-bottom:2px;
  transition:color .2s ease,transform .2s ease,border-color .2s ease;
}
.text-link:hover{color:#7CF3DF;border-color:#7CF3DF;transform:translateX(4px);}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.mini-card{
  display:flex;
  flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.mini-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.mini-cover{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-3);
}
.mini-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.mini-card:hover .mini-cover img{transform:scale(1.03);}
.mini-cover .badge{
  position:absolute;
  left:12px;
  top:12px;
  background:rgba(6,10,22,0.72);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.mini-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.mini-body h3{
  font-size:17px;
  line-height:1.5;
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.mini-body p{
  font-size:14px;
  color:var(--text-2);
  margin:0;
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.mini-foot{
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid rgba(140,180,255,0.1);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}
.mini-foot i{color:var(--cyan);transition:transform .2s ease;}
.mini-card:hover .mini-foot i{transform:translateX(4px);}

/* ---------- Back links ---------- */
.back-section{padding-top:0;padding-bottom:96px;}
.back-panel{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:32px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  box-shadow:var(--shadow-card);
}
.back-panel h2{font-size:20px;margin-bottom:8px;}
.back-panel p{margin:0;color:var(--text-2);font-size:15px;}
.back-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;
  background:var(--bg-3);
  border-top:1px solid var(--line);
  padding-top:56px;
  padding-bottom:0;
}
.footer-top{
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,var(--cyan),var(--purple),transparent);
  opacity:.8;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:28px;
  padding-bottom:40px;
}
.footer-brand p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.8;
  margin:16px 0 0;
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  color:var(--text-2);
  font-size:14px;
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--cyan);}
.footer-contact p{
  color:var(--text-2);
  font-size:14px;
  margin:0 0 12px;
  line-height:1.7;
}
.footer-contact .btn{margin-top:8px;}
.footer-bottom{
  border-top:1px solid rgba(140,180,255,0.1);
  padding:22px 0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media screen and (max-width:1024px){
  .article-title{font-size:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media screen and (max-width:900px){
  .nav-toggle{display:block;}
  .nav-links{
    position:fixed;
    top:72px;
    right:0;
    width:min(320px,86vw);
    height:calc(100vh - 72px);
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:20px;
    background:rgba(6,10,22,0.96);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .3s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{height:50px;font-size:16px;justify-content:flex-start;padding:0 12px;}
  .nav-link::after{left:12px;right:12px;bottom:6px;}
  .nav-cta{display:none;}
}
@media screen and (max-width:768px){
  body{font-size:15px;}
  .section{padding-top:64px;padding-bottom:64px;}
  .page-head{padding-top:48px;padding-bottom:32px;}
  .article-title{font-size:30px;}
  .article-body h2{font-size:24px;margin-top:36px;}
  .article-body h3{font-size:18px;}
  .article-section{padding-top:40px;padding-bottom:40px;}
  .related-grid{grid-template-columns:1fr;}
  .section-head h2{font-size:24px;}
  .back-panel{padding:24px;flex-direction:column;align-items:flex-start;}
  .related-section{padding-top:48px;padding-bottom:48px;}
  .back-section{padding-bottom:64px;}
}
@media screen and (max-width:520px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .article-title{font-size:26px;line-height:1.35;}
  .article-meta{gap:8px 16px;font-size:13px;}
  .article-body{font-size:15px;line-height:1.9;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn{width:100%;}
  .back-actions{width:100%;}
  .back-actions .btn{width:100%;}
  .logo{font-size:16px;}
}

/* roulang page: category1 */
:root{
  --bg:#060A16;
  --panel:#0C1224;
  --deep:#04070F;
  --primary:#2FE6C8;
  --secondary:#7C6BFF;
  --action:#FF7A45;
  --text:#E9F0FB;
  --text-2:#9FB0CC;
  --text-3:#6B7C99;
  --glass:rgba(255,255,255,.05);
  --stroke:rgba(140,180,255,.14);
  --stroke-strong:rgba(47,230,200,.5);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 20px 48px rgba(47,230,200,.12);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{overflow-x:hidden;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;top:-220px;left:-180px;width:660px;height:660px;
  background:radial-gradient(circle,rgba(47,230,200,.18),transparent 65%);
  pointer-events:none;z-index:0;
}
body::after{
  content:"";position:fixed;bottom:-260px;right:-200px;width:740px;height:740px;
  background:radial-gradient(circle,rgba(124,107,255,.16),transparent 65%);
  pointer-events:none;z-index:0;
}
.grid-overlay{
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(rgba(140,180,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,180,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
}
h1,h2,h3,h4,h5,h6{margin:0 0 16px;font-weight:700;line-height:1.35;color:var(--text);letter-spacing:.2px}
h1{font-size:clamp(30px,3.4vw,40px);font-weight:800;line-height:1.28;letter-spacing:-.4px}
h2{font-size:clamp(23px,2.4vw,28px)}
h3{font-size:clamp(18px,1.8vw,20px)}
p{margin:0 0 16px;color:var(--text-2)}
ul{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:#7CF3DF}
button,input,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* 容器 */
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;position:relative;z-index:1}
@media (min-width:1440px){.grid-container{max-width:1320px}}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;text-decoration:none;
  transition:transform .22s ease,box-shadow .26s ease,background-color .22s ease,color .22s ease,border-color .22s ease,filter .22s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#2FE6C8 0%,#7C6BFF 100%);
  color:#04121A;font-weight:700;
  box-shadow:0 0 24px rgba(47,230,200,.32);
}
.btn-primary:hover{
  color:#04121A;filter:brightness(1.08);transform:translateY(-2px);
  box-shadow:0 0 38px rgba(47,230,200,.5),0 16px 36px rgba(0,0,0,.4);
}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{
  background:transparent;color:var(--primary);
  border-color:rgba(47,230,200,.5);
}
.btn-ghost:hover{background:rgba(47,230,200,.08);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(-1px)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--primary);border-bottom:2px solid rgba(47,230,200,.4);
  padding-bottom:2px;transition:transform .2s ease,color .2s ease,border-color .2s ease;
}
.text-link:hover{color:#7CF3DF;border-color:#7CF3DF;transform:translateX(4px)}
.text-link i{font-size:12px}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.6px;
  color:var(--primary);background:rgba(47,230,200,.1);border:1px solid rgba(47,230,200,.3);
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(47,230,200,.9)}
.badge-violet{color:#B7AEFF;background:rgba(124,107,255,.12);border-color:rgba(124,107,255,.35)}
.badge-violet::before{background:var(--secondary);box-shadow:0 0 8px rgba(124,107,255,.9)}

/* 顶部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(6,10,22,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background-color .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{background:rgba(4,7,15,.94);border-bottom-color:var(--stroke)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:12px;text-decoration:none;flex:none}
.logo:hover{color:var(--text)}
.logo-mark{position:relative;width:26px;height:26px;flex:none;display:inline-block}
.logo-mark::before{
  content:"";position:absolute;inset:0;border-radius:8px;
  background:linear-gradient(135deg,#2FE6C8,#7C6BFF);
  box-shadow:0 0 18px rgba(47,230,200,.35);
}
.logo-mark::after{
  content:"";position:absolute;right:-4px;bottom:-4px;width:12px;height:12px;border-radius:4px;
  background:var(--bg);border:2px solid var(--primary);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-size:17px;font-weight:800;color:var(--text);letter-spacing:.3px}
.logo-text small{font-size:11px;font-weight:600;color:var(--text-3);letter-spacing:2.5px}
.nav-links{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:var(--header-h);
  padding:0 14px;font-size:15px;font-weight:600;color:var(--text-2);
  transition:color .22s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  box-shadow:0 0 12px rgba(47,230,200,.7);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.nav-cta{padding:0 20px;font-size:14px}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;flex:none;
  background:rgba(255,255,255,.05);border:1px solid var(--stroke);border-radius:12px;cursor:pointer;
}
.nav-toggle span{position:absolute;left:12px;right:12px;top:50%;height:2px;border-radius:2px;background:var(--text);transform:translateY(-50%);transition:background-color .2s ease}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;background:var(--text);transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}
.site-header.nav-open .nav-toggle span{background:transparent}
.site-header.nav-open .nav-toggle span::before{transform:translateY(7px) rotate(45deg)}
.site-header.nav-open .nav-toggle span::after{transform:translateY(-7px) rotate(-45deg)}

/* 主体 */
main{position:relative;z-index:1}

/* Hero */
.page-hero{padding-top:calc(var(--header-h) + 72px);padding-bottom:0}
.hero-row{display:flex;flex-wrap:wrap;align-items:center;margin-left:-12px;margin-right:-12px}
.hero-row > .column{padding-left:12px;padding-right:12px;float:none;width:100%}
.hero-copy{max-width:600px}
.page-hero h1{margin:20px 0 18px}
.hero-lead{font-size:16px;line-height:1.9;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 22px}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.trust-item::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(47,230,200,.85)}
.hero-visual{position:relative;margin-top:8px}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;
  border:1px solid var(--stroke);box-shadow:var(--shadow);
}
.float-card{
  position:absolute;padding:14px 18px;border-radius:14px;
  background:rgba(12,18,36,.72);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--shadow);max-width:230px;
}
.float-card .fc-label{display:block;font-size:12px;font-weight:700;color:var(--primary);letter-spacing:.8px;margin-bottom:6px}
.float-card .fc-text{font-size:13px;line-height:1.7;color:var(--text-2);margin:0}
.float-a{left:-22px;bottom:34px}
.float-b{right:-14px;top:28px}

/* 锚点短词条 */
.anchor-bar{
  margin-top:64px;padding:18px 0;display:flex;flex-wrap:wrap;gap:12px 30px;
  border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke);
}
.anchor-bar a{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--text-2)}
.anchor-bar a::before{content:"#";color:var(--primary);opacity:.75;font-weight:700}
.anchor-bar a:hover{color:var(--primary)}

/* 板块 */
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{margin-bottom:14px}
.section-head p{font-size:15px;line-height:1.85;margin-bottom:0}
.eyebrow{display:block;font-size:12px;font-weight:700;letter-spacing:2.4px;color:var(--primary);margin-bottom:14px}

/* 要点行 */
.point-list{border-top:1px solid var(--stroke)}
.point-row{
  display:grid;grid-template-columns:64px 1fr 1.35fr;gap:24px;align-items:center;
  padding:26px 12px;border-bottom:1px solid var(--stroke);
  transition:background-color .25s ease;
}
.point-row:hover{background:rgba(47,230,200,.035)}
.point-num{font-size:15px;font-weight:800;color:var(--primary);letter-spacing:1px;font-variant-numeric:tabular-nums}
.point-row h3{margin:0;font-size:18px}
.point-row p{margin:0;font-size:14px;line-height:1.8;color:var(--text-2)}

/* 锚点目录 + 分节 */
.docs-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:48px;align-items:start}
.toc{
  position:sticky;top:calc(var(--header-h) + 24px);
  padding:22px 18px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.toc h4{font-size:11px;letter-spacing:2.4px;color:var(--text-3);margin-bottom:14px;font-weight:700}
.toc a{
  display:block;padding:10px 12px;border-radius:10px;font-size:14px;font-weight:600;
  color:var(--text-2);border-left:2px solid transparent;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.toc a:hover{color:var(--primary);background:rgba(47,230,200,.07);border-left-color:var(--primary)}
.doc-section{padding-bottom:56px;margin-bottom:56px;border-bottom:1px solid var(--stroke);scroll-margin-top:calc(var(--header-h) + 24px)}
.doc-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.doc-section h2{position:relative;padding-left:18px;margin-bottom:16px}
.doc-section h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--secondary));
}
.doc-section > p{font-size:15px;line-height:1.9}
.ck-list{margin:20px 0 0}
.ck-list li{position:relative;padding-left:28px;margin-bottom:12px;font-size:15px;line-height:1.8;color:var(--text-2)}
.ck-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:10px;height:10px;border-radius:3px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));transform:rotate(45deg);
}
.doc-figure{margin:26px 0 0;border-radius:14px;overflow:hidden;border:1px solid var(--stroke);background:var(--panel)}
.doc-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.doc-figure:hover img{transform:scale(1.03)}
.doc-figure figcaption{padding:12px 16px;font-size:13px;color:var(--text-3)}

/* 玻璃卡片与 bento */
.glass-card{
  background:var(--glass);border:1px solid var(--stroke);border-radius:var(--r-card);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  padding:28px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.glass-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--stroke-strong)}
.glass-card h3{margin-bottom:12px}
.glass-card p{font-size:14px;line-height:1.8;margin-bottom:16px}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:18px;font-size:18px;color:var(--primary);
  background:rgba(47,230,200,.1);border:1px solid rgba(47,230,200,.28);
}
.card-icon.violet{color:#B7AEFF;background:rgba(124,107,255,.12);border-color:rgba(124,107,255,.32)}
.bento{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.bento .cell-lg{grid-column:span 2;grid-row:span 2;display:flex;flex-direction:column;justify-content:space-between}
.bento .cell-wide{grid-column:span 3;display:grid;grid-template-columns:1fr 1.2fr;gap:28px;align-items:center}
.mini-list li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2);margin-bottom:10px}
.mini-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(47,230,200,.8)}
.cell-wide .mini-list{margin-bottom:0}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{padding:26px 22px;border-radius:14px;background:var(--glass);border:1px solid var(--stroke);transition:border-color .25s ease,transform .25s ease}
.step:hover{border-color:var(--stroke-strong);transform:translateY(-3px)}
.step .step-num{display:block;font-size:13px;font-weight:800;letter-spacing:2px;color:var(--secondary);margin-bottom:14px;font-variant-numeric:tabular-nums}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:13.5px;line-height:1.8;margin:0;color:var(--text-2)}

/* FAQ */
.faq{max-width:860px}
.faq-item{
  position:relative;margin-bottom:12px;border-radius:14px;overflow:hidden;
  background:var(--glass);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:border-color .25s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;opacity:0;
  background:linear-gradient(180deg,var(--primary),var(--secondary));transition:opacity .25s ease;
}
.faq-item[open]{border-color:var(--stroke-strong)}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 22px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:none;width:22px;height:22px;transition:transform .25s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px}
.faq-icon::before{left:0;right:0;top:10px;height:2px}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 22px 20px 42px;font-size:14.5px;line-height:1.85;color:var(--text-2)}
.faq-answer p{margin:0;font-size:14.5px;color:var(--text-2)}

/* CTA 带 */
.cta-panel{
  padding:60px 48px;border-radius:20px;text-align:center;
  background:linear-gradient(135deg,rgba(47,230,200,.12),rgba(124,107,255,.12)),var(--glass);
  border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.cta-panel h2{margin-bottom:14px}
.cta-panel p{max-width:640px;margin:0 auto 28px;font-size:15px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cta-note{margin:20px 0 0;font-size:13px;color:var(--text-3)}
.cta-note strong{color:var(--action);font-weight:700;font-variant-numeric:tabular-nums;margin:0 4px}

/* 页脚 */
.site-footer{position:relative;z-index:1;background:var(--deep);margin-top:96px}
.footer-top{height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary))}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;padding:64px 0 44px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-2);margin:18px 0 0;max-width:330px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:18px;letter-spacing:.6px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-contact p{font-size:14px;line-height:1.8;color:var(--text-2);margin-bottom:10px}
.footer-contact .btn{margin-top:10px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:20px 0 34px;border-top:1px solid var(--stroke);
  font-size:13px;color:var(--text-3);
}

/* 响应式 */
@media (max-width:1024px){
  .nav-toggle{display:block}
  .nav-cta{display:none}
  .nav-links{
    position:fixed;top:calc(var(--header-h) + 10px);right:16px;left:auto;
    width:min(320px,calc(100vw - 32px));margin:0;
    flex-direction:column;align-items:stretch;gap:4px;padding:16px;
    background:rgba(12,18,36,.97);border:1px solid var(--stroke);border-radius:16px;
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translateY(-12px);
    transition:opacity .25s ease,transform .25s ease;
  }
  .site-header.nav-open .nav-links{opacity:1;pointer-events:auto;transform:translateY(0)}
  .nav-link{height:48px;padding:0 12px;border-radius:10px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:rgba(47,230,200,.08);color:var(--primary)}
  .docs-layout{grid-template-columns:1fr;gap:32px}
  .toc{position:static;display:flex;flex-wrap:wrap;gap:8px;padding:16px}
  .toc h4{width:100%;margin-bottom:6px}
  .toc a{border:1px solid var(--stroke);border-left-width:1px;padding:8px 14px}
  .bento{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bento .cell-lg{grid-column:span 2;grid-row:auto}
  .bento .cell-wide{grid-column:span 2;grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .section-sm{padding:48px 0}
  .page-hero{padding-top:calc(var(--header-h) + 48px)}
  .point-row{grid-template-columns:48px 1fr;gap:14px}
  .point-row p{grid-column:2}
  .float-card{position:static;margin-top:14px;max-width:none}
  .cta-panel{padding:44px 24px}
}
@media (max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px}
  h1{font-size:32px}
  body{font-size:15px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .bento{grid-template-columns:1fr}
  .bento .cell-lg,.bento .cell-wide{grid-column:span 1}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .doc-section{padding-bottom:40px;margin-bottom:40px}
  .anchor-bar{gap:10px 20px}
}
@media (max-width:520px){
  .nav-links{left:16px;right:16px;width:auto}
  .logo-text{font-size:16px}
}

/* roulang page: category2 */
:root{
    --bg:#060A16;
    --panel:#0C1224;
    --deepest:#04070F;
    --cyan:#2FE6C8;
    --purple:#7C6BFF;
    --orange:#FF7A45;
    --text:#E9F0FB;
    --text-2:#9FB0CC;
    --text-3:#6B7C99;
    --line:rgba(140,180,255,0.14);
    --glass:rgba(255,255,255,0.05);
    --glass-strong:rgba(255,255,255,0.08);
    --radius-card:16px;
    --radius-btn:12px;
    --radius-input:10px;
    --shadow:0 12px 32px rgba(0,0,0,0.35);
    --shadow-hover:0 20px 48px rgba(47,230,200,0.12);
    --container:1200px;
    --gap:24px;
  }

  *,
  *::before,
  *::after{ box-sizing:border-box; }

  html{ scroll-behavior:smooth; }

  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
    position:relative;
  }

  body::before,
  body::after{
    content:"";
    position:fixed;
    width:720px;
    height:720px;
    border-radius:50%;
    pointer-events:none;
    z-index:0;
    filter:blur(20px);
  }
  body::before{
    top:-280px;
    left:-220px;
    background:radial-gradient(circle,rgba(47,230,200,0.16),transparent 68%);
  }
  body::after{
    bottom:-320px;
    right:-240px;
    background:radial-gradient(circle,rgba(124,107,255,0.18),transparent 68%);
  }

  .grid-lines{
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    opacity:0.04;
    background-image:
      linear-gradient(rgba(233,240,251,0.5) 1px,transparent 1px),
      linear-gradient(90deg,rgba(233,240,251,0.5) 1px,transparent 1px);
    background-size:70px 70px;
  }

  a{ color:var(--cyan); text-decoration:none; transition:color .22s ease, opacity .22s ease; }
  a:hover{ color:#7BF3DF; }
  img{ max-width:100%; display:block; }
  ul{ margin:0; padding:0; list-style:none; }
  h1,h2,h3,h4{ margin:0; font-weight:800; line-height:1.35; color:var(--text); }
  p{ margin:0; }
  button{ font-family:inherit; }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible{
    outline:2px solid var(--cyan);
    outline-offset:3px;
    border-radius:6px;
  }

  .grid-container{
    max-width:var(--container);
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
    position:relative;
    z-index:2;
  }

  @media screen and (min-width:1200px){
    .grid-container{ max-width:var(--container); }
  }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:rgba(6,10,22,0.72);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(140,180,255,0.08);
    transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
  }
  .site-header.is-scrolled{
    background:rgba(6,10,22,0.94);
    border-bottom-color:rgba(140,180,255,0.18);
    box-shadow:0 10px 30px rgba(0,0,0,0.4);
  }
  .nav-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    min-height:76px;
  }
  .logo{
    display:inline-flex;
    align-items:center;
    gap:12px;
    color:var(--text);
    flex:0 0 auto;
  }
  .logo:hover{ color:var(--text); }
  .logo-mark{
    width:30px;
    height:30px;
    border-radius:9px;
    background:linear-gradient(135deg,var(--cyan),var(--purple));
    box-shadow:0 0 0 1px rgba(47,230,200,0.35),0 8px 20px rgba(47,230,200,0.25);
    position:relative;
    flex:0 0 auto;
  }
  .logo-mark::after{
    content:"";
    position:absolute;
    inset:9px;
    border-radius:4px;
    background:var(--deepest);
  }
  .logo-text{
    font-size:19px;
    font-weight:800;
    letter-spacing:0.5px;
    display:inline-flex;
    align-items:baseline;
    gap:6px;
    white-space:nowrap;
  }
  .logo-text small{
    font-size:12px;
    font-weight:600;
    color:var(--text-2);
    letter-spacing:1.5px;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:6px;
    flex:1 1 auto;
    justify-content:center;
  }
  .nav-link{
    display:inline-block;
    padding:10px 14px;
    font-size:15px;
    font-weight:600;
    color:var(--text-2);
    border-radius:var(--radius-btn);
    position:relative;
    transition:color .22s ease,background .22s ease;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:14px;
    right:14px;
    bottom:4px;
    height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--cyan),var(--purple));
    box-shadow:0 0 10px rgba(47,230,200,0.7);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .25s ease;
  }
  .nav-link:hover{ color:var(--text); background:rgba(47,230,200,0.06); }
  .nav-link:hover::after{ transform:scaleX(1); }
  .nav-link.is-active{ color:var(--text); }
  .nav-link.is-active::after{ transform:scaleX(1); }

  .nav-actions{ display:flex; align-items:center; gap:14px; flex:0 0 auto; }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:12px 22px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:700;
    border:1px solid transparent;
    cursor:pointer;
    text-align:center;
    transition:transform .2s ease,box-shadow .24s ease,background .24s ease,color .24s ease,border-color .24s ease,filter .24s ease;
    line-height:1.4;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--cyan),var(--purple));
    color:#04121A;
    box-shadow:0 8px 24px rgba(47,230,200,0.28),0 0 0 1px rgba(47,230,200,0.35);
  }
  .btn-primary:hover{
    color:#04121A;
    filter:brightness(1.08);
    transform:translateY(-2px);
    box-shadow:0 14px 36px rgba(47,230,200,0.42),0 0 0 1px rgba(47,230,200,0.5);
  }
  .btn-primary:active{ transform:translateY(1px); }
  .btn-ghost{
    background:transparent;
    color:var(--cyan);
    border-color:rgba(47,230,200,0.55);
  }
  .btn-ghost:hover{
    color:var(--cyan);
    background:rgba(47,230,200,0.08);
    border-color:var(--cyan);
    transform:translateY(-2px);
  }
  .btn-ghost:active{ transform:translateY(1px); }
  .btn-sm{ min-height:40px; padding:9px 16px; font-size:14px; }
  .nav-cta{ white-space:nowrap; }

  .link-more{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:15px;
    font-weight:700;
    color:var(--cyan);
    border-bottom:2px solid rgba(47,230,200,0.5);
    padding-bottom:2px;
    transition:transform .22s ease,border-color .22s ease,color .22s ease;
  }
  .link-more:hover{
    color:#7BF3DF;
    border-color:#7BF3DF;
    transform:translateX(4px);
  }

  /* ============ 通用板块 ============ */
  .section{ padding:96px 0; position:relative; }
  .section-sm{ padding:64px 0; }
  .section-xs{ padding:48px 0; }
  .section-deep{ background:var(--deepest); }

  .section-head{
    max-width:760px;
    margin-bottom:48px;
  }
  .section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:12px;
    font-weight:700;
    letter-spacing:1.4px;
    text-transform:uppercase;
    color:var(--cyan);
    padding:6px 14px;
    border-radius:999px;
    background:rgba(47,230,200,0.08);
    border:1px solid rgba(47,230,200,0.22);
    margin-bottom:18px;
  }
  .section-head h2{
    font-size:28px;
    margin-bottom:16px;
  }
  .section-head p{
    color:var(--text-2);
    font-size:16px;
    line-height:1.85;
  }
  .section-head.split{
    max-width:none;
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    flex-wrap:wrap;
  }
  .section-head.split .split-text{ max-width:720px; }

  /* ============ 内页 Hero ============ */
  .page-hero{
    position:relative;
    padding:84px 0 72px;
    overflow:hidden;
    background-color:var(--deepest);
    background-image:
      linear-gradient(90deg,rgba(4,7,15,0.94) 0%,rgba(4,7,15,0.78) 46%,rgba(4,7,15,0.92) 100%),
      url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
  }
  .page-hero::after{
    content:"";
    position:absolute;
    left:0; right:0; bottom:0;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(47,230,200,0.6),rgba(124,107,255,0.6),transparent);
  }
  .hero-grid{ align-items:center; }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--text-3);
    margin-bottom:22px;
    flex-wrap:wrap;
  }
  .breadcrumb a{ color:var(--text-2); }
  .breadcrumb a:hover{ color:var(--cyan); }
  .breadcrumb span.sep{ color:var(--text-3); }
  .page-hero h1{
    font-size:40px;
    line-height:1.3;
    margin-bottom:20px;
  }
  .page-hero h1 em{
    font-style:normal;
    background:linear-gradient(135deg,var(--cyan),var(--purple));
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .page-hero .lede{
    color:var(--text-2);
    font-size:17px;
    line-height:1.9;
    max-width:640px;
    margin-bottom:28px;
  }
  .hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }
  .hero-figure{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    aspect-ratio:16/11;
    background:var(--panel);
  }
  .hero-figure img{ width:100%; height:100%; object-fit:cover; }
  .glass-float{
    position:absolute;
    left:18px;
    bottom:18px;
    right:18px;
    background:rgba(12,18,36,0.62);
    border:1px solid var(--line);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-radius:14px;
    padding:14px 16px;
    display:flex;
    align-items:center;
    gap:12px;
  }
  .glass-float .dot{
    width:10px; height:10px; border-radius:50%;
    background:var(--cyan);
    box-shadow:0 0 12px rgba(47,230,200,0.9);
    flex:0 0 auto;
  }
  .glass-float b{ font-size:14px; font-weight:700; display:block; }
  .glass-float span{ font-size:13px; color:var(--text-2); }

  /* ============ 锚点概览条 ============ */
  .anchor-bar{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:16px;
  }
  .anchor-item{
    display:block;
    padding:20px;
    border-radius:var(--radius-card);
    background:var(--glass);
    border:1px solid var(--line);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease,background .24s ease;
  }
  .anchor-item:hover{
    transform:translateY(-4px);
    border-color:rgba(47,230,200,0.55);
    box-shadow:var(--shadow-hover);
    background:var(--glass-strong);
  }
  .anchor-item .num{
    font-size:13px;
    font-weight:800;
    color:var(--cyan);
    letter-spacing:1px;
    display:block;
    margin-bottom:8px;
    font-variant-numeric:tabular-nums;
  }
  .anchor-item strong{
    display:block;
    font-size:16px;
    font-weight:700;
    color:var(--text);
    margin-bottom:6px;
  }
  .anchor-item p{
    font-size:13px;
    color:var(--text-2);
    line-height:1.7;
  }

  /* ============ 场景图文交替 ============ */
  .scene{
    padding:64px 0;
    border-bottom:1px solid rgba(140,180,255,0.08);
    scroll-margin-top:96px;
  }
  .scene:last-of-type{ border-bottom:none; }
  .scene-grid{ align-items:center; }
  .scene-figure{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    aspect-ratio:16/11;
    background:var(--panel);
  }
  .scene-figure img{
    width:100%; height:100%; object-fit:cover;
    transition:transform .4s ease;
  }
  .scene-figure:hover img{ transform:scale(1.03); }
  .scene-tag{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:12px;
    font-weight:700;
    letter-spacing:1px;
    color:var(--purple);
    background:rgba(124,107,255,0.12);
    border:1px solid rgba(124,107,255,0.3);
    border-radius:999px;
    padding:5px 13px;
    margin-bottom:16px;
  }
  .scene h3{
    font-size:24px;
    margin-bottom:16px;
  }
  .scene-body p{
    color:var(--text-2);
    font-size:16px;
    line-height:1.9;
    margin-bottom:14px;
  }
  .check-list{ margin:20px 0 24px; }
  .check-list li{
    position:relative;
    padding-left:28px;
    margin-bottom:12px;
    color:var(--text);
    font-size:15px;
    line-height:1.75;
  }
  .check-list li::before{
    content:"";
    position:absolute;
    left:0;
    top:9px;
    width:12px;
    height:12px;
    border-radius:4px;
    background:linear-gradient(135deg,var(--cyan),var(--purple));
    box-shadow:0 0 10px rgba(47,230,200,0.45);
  }
  .check-list li span{ color:var(--text-2); }

  .stat-inline{
    display:flex;
    align-items:baseline;
    gap:10px;
    margin-bottom:24px;
    padding:14px 18px;
    border-radius:14px;
    background:var(--glass);
    border:1px solid var(--line);
  }
  .stat-inline b{
    font-size:26px;
    font-weight:800;
    color:var(--orange);
    font-variant-numeric:tabular-nums;
    line-height:1.2;
  }
  .stat-inline span{ font-size:14px; color:var(--text-2); }

  /* ============ 流程步骤 ============ */
  .steps{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:20px;
  }
  .step-card{
    position:relative;
    padding:28px 24px;
    border-radius:var(--radius-card);
    background:var(--glass);
    border:1px solid var(--line);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
  }
  .step-card:hover{
    transform:translateY(-4px);
    border-color:rgba(47,230,200,0.5);
    box-shadow:var(--shadow-hover);
  }
  .step-card .step-idx{
    width:38px;
    height:38px;
    border-radius:12px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:15px;
    font-weight:800;
    color:#04121A;
    background:linear-gradient(135deg,var(--cyan),var(--purple));
    margin-bottom:18px;
    font-variant-numeric:tabular-nums;
  }
  .step-card h3{ font-size:18px; margin-bottom:10px; }
  .step-card p{ font-size:14px; color:var(--text-2); line-height:1.8; }
  .step-line{
    height:1px;
    margin-top:36px;
    background:linear-gradient(90deg,transparent,rgba(47,230,200,0.5),rgba(124,107,255,0.5),transparent);
  }

  /* ============ 提示面板 ============ */
  .notice-panel{
    border-radius:var(--radius-card);
    background:var(--glass);
    border:1px solid var(--line);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    padding:32px;
    box-shadow:var(--shadow);
  }
  .notice-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:28px;
  }
  .notice-grid h3{
    font-size:17px;
    margin-bottom:10px;
    display:flex;
    align-items:center;
    gap:10px;
  }
  .notice-grid h3 i{ color:var(--cyan); font-size:16px; }
  .notice-grid p{ font-size:14px; color:var(--text-2); line-height:1.85; }

  /* ============ CTA 带 ============ */
  .cta-band{
    border-radius:22px;
    padding:52px 44px;
    background:linear-gradient(135deg,rgba(47,230,200,0.10),rgba(124,107,255,0.12));
    border:1px solid rgba(140,180,255,0.2);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    box-shadow:var(--shadow);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    flex-wrap:wrap;
  }
  .cta-band h2{ font-size:28px; margin-bottom:12px; }
  .cta-band p{ color:var(--text-2); font-size:16px; max-width:560px; }
  .cta-band .cta-actions{ display:flex; gap:14px; flex-wrap:wrap; }

  /* ============ 页脚 ============ */
  .site-footer{
    background:var(--deepest);
    position:relative;
    margin-top:0;
    padding-bottom:8px;
    z-index:2;
  }
  .footer-top{
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(47,230,200,0.7),rgba(124,107,255,0.7),transparent);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.3fr;
    gap:32px;
    padding:64px 0 40px;
  }
  .footer-brand p{
    color:var(--text-2);
    font-size:14px;
    line-height:1.85;
    margin-top:18px;
    max-width:340px;
  }
  .footer-col h4{
    font-size:15px;
    font-weight:700;
    margin-bottom:18px;
    color:var(--text);
  }
  .footer-col ul li{ margin-bottom:12px; }
  .footer-col ul li a{
    color:var(--text-2);
    font-size:14px;
  }
  .footer-col ul li a:hover{ color:var(--cyan); }
  .footer-contact p{
    color:var(--text-2);
    font-size:14px;
    line-height:1.85;
    margin-bottom:12px;
    word-break:break-word;
  }
  .footer-contact .btn{ margin-top:8px; }
  .footer-bottom{
    border-top:1px solid rgba(140,180,255,0.1);
    padding:22px 0 32px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    font-size:13px;
    color:var(--text-3);
  }

  /* ============ 移动端导航 ============ */
  .nav-toggle{
    display:none;
    width:44px;
    height:44px;
    border-radius:12px;
    background:var(--glass);
    border:1px solid var(--line);
    position:relative;
    cursor:pointer;
  }
  .nav-toggle span,
  .nav-toggle span::before,
  .nav-toggle span::after{
    position:absolute;
    left:50%;
    transform:translateX(-50%);
    width:18px;
    height:2px;
    border-radius:2px;
    background:var(--text);
    transition:transform .25s ease,opacity .25s ease;
  }
  .nav-toggle span{ top:21px; }
  .nav-toggle span::before{ content:""; top:-6px; left:0; transform:none; }
  .nav-toggle span::after{ content:""; top:6px; left:0; transform:none; }
  body.nav-open .nav-toggle span{ background:transparent; }
  body.nav-open .nav-toggle span::before{ transform:translateY(6px) rotate(45deg); }
  body.nav-open .nav-toggle span::after{ transform:translateY(-6px) rotate(-45deg); }

  .nav-backdrop{
    position:fixed;
    inset:0;
    background:rgba(4,7,15,0.6);
    backdrop-filter:blur(4px);
    opacity:0;
    visibility:hidden;
    transition:opacity .28s ease,visibility .28s ease;
    z-index:70;
  }
  body.nav-open .nav-backdrop{ opacity:1; visibility:visible; }

  /* ============ 响应式 ============ */
  @media screen and (max-width:1024px){
    .section{ padding:72px 0; }
    .page-hero{ padding:64px 0 56px; }
    .page-hero h1{ font-size:34px; }
    .footer-grid{ grid-template-columns:1fr 1fr; gap:28px; padding:52px 0 32px; }
    .steps{ grid-template-columns:repeat(2,minmax(0,1fr)); }
    .anchor-bar{ grid-template-columns:repeat(2,minmax(0,1fr)); }
    .notice-grid{ grid-template-columns:1fr; gap:22px; }
  }

  @media screen and (max-width:900px){
    .nav-toggle{ display:inline-block; }
    .nav-links{
      position:fixed;
      top:0;
      right:0;
      height:100vh;
      width:min(330px,84vw);
      background:rgba(9,14,28,0.94);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      border-left:1px solid var(--line);
      flex-direction:column;
      align-items:flex-start;
      justify-content:flex-start;
      gap:8px;
      padding:104px 24px 32px;
      transform:translateX(105%);
      transition:transform .32s ease;
      z-index:85;
      overflow-y:auto;
    }
    body.nav-open .nav-links{ transform:translateX(0); }
    .nav-link{
      width:100%;
      padding:14px 12px;
      font-size:16px;
    }
    .nav-link::after{ left:12px; right:auto; width:26px; bottom:8px; }
    .nav-cta{ display:none; }
  }

  @media screen and (max-width:640px){
    body{ font-size:15px; }
    .grid-container{ padding-left:16px; padding-right:16px; }
    .nav-inner{ min-height:68px; gap:12px; }
    .logo-text{ font-size:17px; }
    .logo-text small{ font-size:11px; letter-spacing:1px; }
    .section{ padding:56px 0; }
    .section-sm{ padding:48px 0; }
    .section-head{ margin-bottom:32px; }
    .section-head h2{ font-size:24px; }
    .page-hero{ padding:48px 0 44px; }
    .page-hero h1{ font-size:30px; }
    .page-hero .lede{ font-size:15px; }
    .hero-actions .btn{ width:100%; }
    .anchor-bar{ grid-template-columns:1fr; }
    .steps{ grid-template-columns:1fr; }
    .scene{ padding:48px 0; }
    .scene h3{ font-size:20px; }
    .scene-figure{ margin-bottom:24px; }
    .cta-band{ padding:32px 22px; }
    .cta-band h2{ font-size:23px; }
    .cta-band .cta-actions .btn{ width:100%; }
    .notice-panel{ padding:24px 20px; }
    .footer-grid{ grid-template-columns:1fr; gap:26px; padding:44px 0 24px; }
    .footer-bottom{ flex-direction:column; align-items:flex-start; gap:8px; }
    .stat-inline b{ font-size:22px; }
  }

/* roulang page: category3 */
:root{
  --bg:#060A16;
  --bg-2:#0C1224;
  --bg-3:#04070F;
  --cyan:#2FE6C8;
  --purple:#7C6BFF;
  --orange:#FF7A45;
  --text:#E9F0FB;
  --text-2:#9FB0CC;
  --text-3:#6B7C99;
  --glass:rgba(255,255,255,.05);
  --glass-2:rgba(255,255,255,.03);
  --line:rgba(140,180,255,.14);
  --line-strong:rgba(47,230,200,.42);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --r-pill:999px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 20px 48px rgba(47,230,200,.12);
  --pad-section:96px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 12% 4%, rgba(47,230,201,.16), transparent 62%),
    radial-gradient(720px 460px at 92% 16%, rgba(124,107,255,.15), transparent 64%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.04;
  background-image:
    linear-gradient(rgba(140,180,255,.9) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,180,255,.9) 1px, transparent 1px);
  background-size:56px 56px, 56px 56px;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--cyan);text-decoration:none;transition:color .25s ease, transform .25s ease, opacity .25s ease}
a:hover{color:var(--cyan)}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
h1,h2,h3,h4{font-weight:800;line-height:1.35;margin:0;color:var(--text);letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus{outline:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
::selection{background:rgba(47,230,200,.28);color:#fff}

/* 容器与栅格覆盖 */
.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
@media screen and (min-width:1200px){.grid-container{max-width:1320px}}
.row{max-width:none;margin-left:-12px;margin-right:-12px}
.row .row{margin-left:-12px;margin-right:-12px}
.column,.columns{padding-left:12px;padding-right:12px}

/* 通用板块 */
.section{padding:var(--pad-section) 0;position:relative;z-index:1}
.section--tight{padding:64px 0}
.section--deep{background:var(--bg-3);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:1.6px;
  color:var(--cyan);text-transform:uppercase;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(47,230,200,.08);
  border:1px solid rgba(47,230,200,.22);
  margin-bottom:18px;
}
.eyebrow i{font-size:11px}
.h2-block{font-size:28px;margin-bottom:14px}
.h3-block{font-size:20px;margin-bottom:10px}
.lead{color:var(--text-2);font-size:16px;max-width:760px;line-height:1.9}
.muted{color:var(--text-3);font-size:14px}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,22,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(4,7,15,.92);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.logo{display:inline-flex;align-items:center;gap:12px;color:var(--text);text-decoration:none}
.logo:hover{color:var(--text)}
.logo-mark{
  width:30px;height:30px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--cyan) 0%, var(--purple) 100%);
  box-shadow:0 0 0 1px rgba(47,230,200,.35), 0 6px 18px rgba(47,230,200,.22);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:8px;border-radius:4px;
  background:var(--bg);opacity:.75;
}
.logo-text{font-size:18px;font-weight:800;letter-spacing:.4px;display:inline-flex;align-items:baseline;gap:6px}
.logo-text small{font-size:11px;font-weight:600;color:var(--text-2);letter-spacing:2px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 14px;
  font-size:15px;font-weight:600;color:var(--text-2);
  border-radius:10px;
  transition:color .25s ease, background .25s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,var(--cyan),var(--purple));
  opacity:0;box-shadow:0 0 12px rgba(47,230,200,.8);
  transition:opacity .25s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{opacity:1}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--glass);
  align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;width:18px;height:2px;background:var(--text);border-radius:2px;display:block}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:700;letter-spacing:.3px;
  border:1px solid transparent;
  text-decoration:none;white-space:nowrap;
  transition:transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease, filter .22s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  color:#04121A;
  background:linear-gradient(135deg,var(--cyan) 0%, var(--purple) 100%);
  box-shadow:0 0 0 1px rgba(47,230,200,.35), 0 10px 28px rgba(47,230,200,.22);
}
.btn-primary:hover{
  color:#04121A;filter:brightness(1.08);transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(47,230,200,.5), 0 16px 38px rgba(47,230,200,.34);
}
.btn-ghost{
  color:var(--cyan);background:transparent;border-color:rgba(47,230,200,.45);
}
.btn-ghost:hover{color:var(--cyan);background:rgba(47,230,200,.08);transform:translateY(-2px)}
.btn-orange{
  color:#1A0B04;
  background:linear-gradient(135deg,var(--orange) 0%, #FFA06B 100%);
  box-shadow:0 10px 26px rgba(255,122,69,.26);
}
.btn-orange:hover{color:#1A0B04;filter:brightness(1.06);transform:translateY(-2px)}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--text);
  border-bottom:2px solid rgba(47,230,200,.45);
  padding-bottom:2px;
  transition:color .25s ease, transform .25s ease, border-color .25s ease;
}
.text-link:hover{color:var(--cyan);border-color:var(--cyan);transform:translateX(4px)}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px}
.nav-cta{min-height:44px;padding:0 20px;font-size:14px}

/* Hero */
.page-hero{
  position:relative;overflow:hidden;
  padding:72px 0 64px;
  border-bottom:1px solid var(--line);
  z-index:1;
}
.page-hero__bg{
  position:absolute;inset:0;z-index:-1;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  opacity:.28;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg, rgba(6,10,22,.62) 0%, rgba(6,10,22,.92) 62%, var(--bg) 100%);
}
.crumb{font-size:14px;color:var(--text-3);margin-bottom:20px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--cyan)}
.crumb span{margin:0 8px;color:var(--text-3)}
.page-hero h1{
  font-size:40px;line-height:1.3;margin-bottom:20px;max-width:820px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(135deg,var(--cyan) 0%, var(--purple) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .lead{max-width:780px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:var(--text-2);
  background:var(--glass);border:1px solid var(--line);
}
.chip i{color:var(--cyan);font-size:12px}

/* 搜索框 */
.support-search{
  margin-top:36px;
  padding:22px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  display:grid;
  grid-template-columns:1fr auto;
  gap:12px;
  align-items:center;
  max-width:820px;
}
.search-field{
  display:flex;align-items:center;gap:12px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  padding:0 16px;height:52px;
  transition:border-color .25s ease, box-shadow .25s ease;
}
.search-field:focus-within{
  border-color:var(--line-strong);
  box-shadow:0 0 0 4px rgba(47,230,200,.14);
}
.search-field i{color:var(--text-3);font-size:15px}
.search-field input{
  flex:1;height:100%;background:transparent;border:none;
  font-size:15px;color:var(--text);
}
.search-field input::placeholder{color:var(--text-3)}
.search-hint{margin-top:14px;font-size:13px;color:var(--text-3)}
.search-hint b{color:var(--text-2);font-weight:600}

/* 支持渠道 */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.channel-card{
  padding:28px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
  height:100%;
}
.channel-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.channel-icon{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;color:var(--cyan);
  background:rgba(47,230,200,.1);
  border:1px solid rgba(47,230,200,.24);
  margin-bottom:18px;
}
.channel-card h3{font-size:20px;margin-bottom:10px}
.channel-card p{color:var(--text-2);font-size:15px}

/* 数据条 */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-box{
  padding:24px 26px;border-radius:var(--r-card);
  background:var(--glass-2);border:1px solid var(--line);
}
.stat-num{
  font-size:32px;font-weight:800;color:var(--cyan);
  font-variant-numeric:tabular-nums;letter-spacing:.5px;line-height:1.2;
}
.stat-num.is-orange{color:var(--orange)}
.stat-label{font-size:14px;color:var(--text-2);margin-top:6px}

/* FAQ */
.faq-group{margin-bottom:56px}
.faq-group:last-child{margin-bottom:0}
.faq-group__head{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.faq-group__head i{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;font-size:15px;
  color:var(--purple);background:rgba(124,107,255,.12);border:1px solid rgba(124,107,255,.28);
}
.faq-list{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item:last-child{border-bottom:none}
.faq-item::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--cyan),var(--purple));
  opacity:0;transition:opacity .25s ease;
}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:14px 26px 14px 30px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  transition:color .25s ease, background .25s ease;
}
.faq-q:hover{color:var(--cyan);background:rgba(255,255,255,.03)}
.faq-plus{
  position:relative;width:18px;height:18px;flex:0 0 auto;
  transition:transform .3s ease;
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--cyan);border-radius:2px;
}
.faq-plus::before{left:0;top:8px;width:18px;height:2px}
.faq-plus::after{top:0;left:8px;width:2px;height:18px}
.faq-item.is-open .faq-plus{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .36s ease;
}
.faq-a p{
  padding:0 60px 22px 30px;
  color:var(--text-2);font-size:15px;line-height:1.9;
}

/* 联系表单 */
.contact-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
}
.contact-aside figure{
  margin:0 0 26px;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.contact-aside img{width:100%;aspect-ratio:16/10;object-fit:cover}
.aside-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--line);
  color:var(--text-2);font-size:15px;
}
.aside-list li:last-child{border-bottom:none}
.aside-list i{color:var(--cyan);margin-top:6px;font-size:13px}
.contact-form{
  padding:32px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.form-row{margin-bottom:20px}
.form-row label{display:block;font-size:14px;font-weight:600;color:var(--text-2);margin-bottom:8px}
.form-row input,.form-row textarea{
  width:100%;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  padding:13px 16px;
  font-size:15px;color:var(--text);
  transition:border-color .25s ease, box-shadow .25s ease;
}
.form-row textarea{resize:vertical;min-height:130px;line-height:1.8}
.form-row input::placeholder,.form-row textarea::placeholder{color:var(--text-3)}
.form-row input:focus,.form-row textarea:focus{
  outline:none;border-color:var(--line-strong);
  box-shadow:0 0 0 4px rgba(47,230,200,.14);
}
.form-row.has-error input,.form-row.has-error textarea{
  border-color:var(--orange);box-shadow:0 0 0 4px rgba(255,122,69,.14);
}
.form-row .error-text{display:none;margin-top:8px;font-size:13px;color:var(--orange)}
.form-row.has-error .error-text{display:block}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.form-note{font-size:13px;color:var(--text-3)}
.form-note.is-ok{color:var(--cyan)}

/* CTA 带 */
.cta-band{
  padding:56px;
  border-radius:20px;
  background:linear-gradient(135deg, rgba(47,230,200,.12) 0%, rgba(124,107,255,.12) 100%);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:30px;
}
.cta-band h2{font-size:28px;margin-bottom:12px}
.cta-band p{color:var(--text-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 页脚 */
.site-footer{position:relative;z-index:1;background:var(--bg-3);padding-top:0;margin-top:0}
.footer-top{height:2px;background:linear-gradient(90deg,var(--cyan),var(--purple))}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;
  padding:64px 0 40px;
}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:18px;line-height:1.9}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.5px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a{color:var(--text-2);font-size:14px}
.footer-col ul li a:hover{color:var(--cyan)}
.footer-contact p{color:var(--text-2);font-size:14px;margin-bottom:12px}
.footer-contact .btn{margin-top:6px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:22px 0 34px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* 响应式 */
@media screen and (max-width:1024px){
  :root{--pad-section:64px}
  .nav-links{
    position:fixed;top:76px;right:0;
    width:min(320px,86vw);
    height:calc(100vh - 76px);
    flex-direction:column;align-items:stretch;gap:6px;
    padding:22px;
    background:rgba(6,10,22,.96);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    transform:translateX(105%);
    transition:transform .32s ease;
    z-index:70;overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{padding:14px 16px;font-size:16px}
  .nav-link::after{left:16px;right:auto;width:34px;bottom:8px}
  .nav-toggle{display:inline-flex}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .contact-wrap{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .cta-band{padding:40px}
}
@media screen and (max-width:640px){
  :root{--pad-section:48px}
  body{font-size:15px}
  .grid-container{padding-left:16px;padding-right:16px}
  .page-hero{padding:52px 0 48px}
  .page-hero h1{font-size:32px}
  .h2-block{font-size:24px}
  .h3-block{font-size:18px}
  .nav-inner{height:68px}
  .nav-links{top:68px;height:calc(100vh - 68px)}
  .logo-text{font-size:16px}
  .logo-text small{display:none}
  .nav-cta{display:none}
  .support-search{grid-template-columns:1fr;padding:16px}
  .channel-grid,.stat-grid{grid-template-columns:1fr}
  .faq-q{padding:14px 18px 14px 22px;font-size:15px}
  .faq-a p{padding:0 22px 20px 22px}
  .contact-form{padding:22px}
  .cta-band{padding:28px;border-radius:16px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .btn{min-height:46px}
}