/* roulang page: index */
:root{
  --ink-900:#14102E;
  --ink-700:#241C52;
  --brand:#FF7A1A;
  --brand-600:#E85F00;
  --accent:#2ED3B7;
  --accent-deep:#0E8E7A;
  --warn:#FFC53D;
  --bg:#F7F6FC;
  --surface:#FFFFFF;
  --line:#E5E2F3;
  --text:#1A1733;
  --text-2:#5A5677;
  --text-3:#8B87A6;
  --danger:#E5484D;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --shadow-1:0 2px 8px rgba(20,16,46,.06);
  --shadow-2:0 10px 30px rgba(20,16,46,.10);
  --shadow-cta:0 8px 20px rgba(255,122,26,.28);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;color:var(--text);background:var(--bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,figure{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section--white{background:var(--surface);}

/* ---------- 通用组件 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;line-height:1.5;font-weight:600;
  padding:4px 10px;border-radius:999px;white-space:nowrap;
}
.badge-accent{background:rgba(46,211,183,.14);color:var(--accent-deep);}
.badge-brand{background:rgba(255,122,26,.14);color:var(--brand-600);}
.badge-warn{background:var(--warn);color:#4A3400;}
.badge-ghost{background:rgba(255,255,255,.14);color:#fff;}

.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;border:1.5px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;cursor:pointer;text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-cta);}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(232,95,0,.32);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-cta);}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.5);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff;color:#fff;transform:translateY(-2px);}
.btn-outline{border-color:var(--ink-700);color:var(--ink-700);background:transparent;}
.btn-outline:hover{background:var(--ink-700);color:#fff;transform:translateY(-2px);}
.btn-lg{min-height:52px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}
.btn:disabled,.btn.is-loading{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-arrow{transition:transform .22s ease;}
.btn:hover .btn-arrow{transform:translateX(3px);}
.is-success{background:var(--accent)!important;box-shadow:0 8px 20px rgba(46,211,183,.28)!important;}
.is-error{background:var(--danger)!important;box-shadow:0 8px 20px rgba(229,72,77,.28)!important;}
.spinner{
  width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.4);border-top-color:#fff;
  animation:spin .7s linear infinite;display:none;
}
.btn.is-loading .spinner{display:inline-block;}
@keyframes spin{to{transform:rotate(360deg);}}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--accent-deep);
  border-bottom:2px solid transparent;transition:color .2s,border-color .2s;
}
.text-link i{font-style:normal;transition:transform .22s ease;}
.text-link:hover{color:var(--brand);border-bottom-color:var(--brand);}
.text-link:hover i{transform:translateX(3px);}

.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:48px;flex-wrap:wrap;
}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);margin-bottom:10px;
}
.section-head h2{font-size:30px;font-weight:700;line-height:1.3;letter-spacing:-.01em;}
.section-desc{max-width:560px;color:var(--text-2);font-size:15.5px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header.is-solid{background:#fff;box-shadow:var(--shadow-1);}
.header-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-.01em;flex:none;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--brand),#FF9A4D);
  display:grid;place-items:center;color:#fff;
  box-shadow:0 6px 16px rgba(255,122,26,.35);
}
.brand-text{color:#fff;transition:color .25s;}
.brand-text em{font-style:normal;color:var(--brand);}
.site-header.is-solid .brand-text{color:var(--text);}
.main-nav{display:flex;align-items:center;gap:26px;}
.site-header .nav-link{
  position:relative;font-size:15px;font-weight:500;padding:8px 2px;
  color:rgba(255,255,255,.82);white-space:nowrap;
}
.site-header.is-solid .nav-link{color:var(--text-2);}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.site-header .nav-link:hover,.site-header .nav-link.active{color:var(--brand);font-weight:700;}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1.5px solid rgba(255,255,255,.4);color:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.site-header.is-solid .nav-toggle{border-color:var(--line);color:var(--text);}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform .25s,opacity .25s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-only{display:none;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;isolation:isolate;
  background:linear-gradient(155deg,#14102E 0%,#241C52 58%,#1B1540 100%);
  padding:152px 0 96px;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px);
  background-size:28px 28px;opacity:.45;
}
.hero::after{
  content:"";position:absolute;top:-180px;right:-140px;width:560px;height:560px;z-index:0;
  background:radial-gradient(circle,rgba(255,122,26,.22),transparent 65%);
}
.hero-inner{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,122,26,.16);color:#FFB27A;
  border:1px solid rgba(255,122,26,.4);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;
}
.hero h1{
  font-size:42px;line-height:1.25;font-weight:800;letter-spacing:-.01em;
  color:#fff;margin:20px 0 18px;
}
.hero-sub{font-size:18px;line-height:1.75;color:rgba(255,255,255,.78);max-width:540px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px;}
.hero-stats{
  display:flex;gap:44px;flex-wrap:wrap;
  margin-top:46px;padding-top:28px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-stat strong{
  display:block;font-size:24px;font-weight:700;letter-spacing:-.02em;color:#fff;line-height:1.4;
}
.hero-stat span{font-size:13px;color:rgba(255,255,255,.58);}
.hero-visual{
  position:relative;border-radius:20px;overflow:hidden;
  aspect-ratio:4/3.5;box-shadow:0 26px 60px rgba(0,0,0,.42);
  background:linear-gradient(135deg,#241C52,#14102E);
}
.hero-visual > img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,16,46,.2) 0%,rgba(20,16,46,.78) 100%);
}
.hero-deco{
  position:absolute;top:26px;right:-46px;width:190px;height:4px;z-index:2;
  background:var(--brand);transform:rotate(-32deg);border-radius:4px;
}
.hero-float{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:3;
  background:rgba(255,255,255,.97);border-radius:14px;
  padding:16px 18px;box-shadow:var(--shadow-2);
  display:flex;gap:14px;align-items:flex-start;
}
.hero-float img{width:52px;height:52px;border-radius:10px;object-fit:cover;flex:none;}
.hero-float p{font-size:14px;line-height:1.6;color:var(--text-2);margin:8px 0 10px;}

/* ---------- 信任条 ---------- */
.trust-strip{background:var(--bg);border-bottom:1px solid var(--line);padding:42px 0;}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.trust-item{display:flex;gap:12px;align-items:flex-start;}
.trust-ico{
  flex:none;width:42px;height:42px;border-radius:12px;background:#fff;
  display:grid;place-items:center;color:var(--brand);box-shadow:var(--shadow-1);
}
.trust-item strong{display:block;font-size:15px;font-weight:600;line-height:1.6;}
.trust-item span{font-size:13px;color:var(--text-2);line-height:1.6;}

/* ---------- 通道阶梯 ---------- */
.tier-section{background:var(--surface);}
.tier-list{position:relative;}
.tier-list::before{
  content:"";position:absolute;left:7px;top:20px;bottom:20px;width:2px;
  background:linear-gradient(180deg,var(--accent),var(--line));
}
.tier-item{position:relative;padding-left:40px;margin-bottom:18px;}
.tier-item::before{
  content:"";position:absolute;left:0;top:32px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--accent);box-sizing:border-box;
}
.tier-item:nth-child(2){margin-left:32px;}
.tier-item:nth-child(2)::before{left:-32px;}
.tier-item:nth-child(3){margin-left:64px;}
.tier-item:nth-child(3)::before{left:-64px;}
.tier-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 26px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.tier-item:hover .tier-body{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(255,122,26,.35);}
.tier-item.is-featured .tier-body{border-color:var(--brand);box-shadow:var(--shadow-2);transform:translateY(-4px);}
.tier-item.is-featured::before{background:var(--brand);border-color:#FFE3CE;transform:scale(1.15);}
.tier-top{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:8px;}
.tier-top h3{font-size:20px;font-weight:600;}
.tier-value{
  font-size:15px;font-weight:700;color:var(--brand);
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.tier-cond{font-size:14px;color:var(--text-2);margin-bottom:14px;}

/* ---------- 对比表 ---------- */
.compare-section{background:var(--bg);}
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);
  -webkit-overflow-scrolling:touch;
}
.compare-table{width:100%;border-collapse:collapse;min-width:680px;}
.compare-table th,.compare-table td{
  padding:0 24px;height:60px;font-size:15px;text-align:left;
  border-bottom:1px solid var(--line);
}
.compare-table thead th{
  background:var(--ink-900);color:#fff;font-weight:600;height:66px;border-bottom:none;
  white-space:nowrap;
}
.compare-table thead th:first-child{border-radius:var(--r-card) 0 0 0;}
.compare-table thead th:last-child{border-radius:0 var(--r-card) 0 0;}
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table tbody tr:nth-child(even) td{background:#FBFAFE;}
.compare-table td:first-child{color:var(--text-2);font-size:14.5px;}
.compare-table thead th:nth-child(3),
.compare-table tbody td:nth-child(3){background:#FFF9F3;}
.compare-table thead th:nth-child(3){background:var(--ink-700);border-top:4px solid var(--brand);}
.compare-table thead th:nth-child(3) .badge{margin-left:8px;}
.mark-yes{color:var(--accent-deep);font-weight:700;font-size:16px;}
.mark-no{color:var(--text-3);}
.table-tip{font-size:13px;color:var(--text-3);margin-top:14px;}
.table-action{margin-top:26px;text-align:right;}

/* ---------- 最新信息 ---------- */
.latest-section{background:var(--surface);}
.latest-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start;}
.lead-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.lead-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(255,122,26,.35);}
.lead-thumb{
  display:block;aspect-ratio:16/9;overflow:hidden;
  background:linear-gradient(135deg,#241C52,#14102E);
}
.lead-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.lead-card:hover .lead-thumb img{transform:scale(1.04);}
.lead-body{padding:24px 26px 26px;}
.lead-body h3{font-size:20px;font-weight:600;line-height:1.5;margin:12px 0 10px;}
.lead-body h3 a:hover{color:var(--brand);}
.lead-body p{
  font-size:14.5px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.lead-meta{font-size:13px;color:var(--text-3);margin-top:16px;display:flex;gap:14px;flex-wrap:wrap;}
.text-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.text-item + .text-item{border-top:1px solid var(--line);}
.text-item a{display:block;padding:18px 22px;min-height:64px;transition:background-color .2s ease;}
.text-item a:hover{background:var(--bg);}
.ti-title{
  display:block;font-size:15.5px;font-weight:600;line-height:1.6;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:color .2s ease;
}
.text-item a:hover .ti-title{color:var(--brand);}
.ti-meta{display:block;font-size:13px;color:var(--text-3);margin-top:6px;}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:72px 24px;text-align:center;color:var(--text-2);
}
.empty-state .empty-ico{color:var(--accent);display:inline-flex;margin-bottom:14px;}
.empty-state p{margin-bottom:22px;font-size:15px;}

/* ---------- 限时条带 ---------- */
.cta-strip{
  position:relative;overflow:hidden;background:var(--ink-900);
  border-top:2px solid var(--brand);border-bottom:2px solid var(--brand);
  padding:36px 0;
}
.cta-strip::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 14px);
}
.cta-strip-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
}
.cta-strip p{color:rgba(255,255,255,.85);font-size:16px;max-width:620px;line-height:1.7;}

/* ---------- 咨询表单 ---------- */
.form-section{background:var(--bg);}
.form-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.point-list{margin-top:28px;display:grid;gap:16px;}
.point-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.75;}
.point-list li::before{
  content:"";flex:none;width:8px;height:8px;margin-top:12px;border-radius:50%;background:var(--accent);
}
.contact-lines{margin-top:36px;padding-top:26px;border-top:1px solid var(--line);display:grid;gap:10px;}
.contact-lines span{font-size:14px;color:var(--text-2);}
.form-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow-2);padding:32px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.req{color:var(--danger);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 14px;font-size:15px;font-family:inherit;color:var(--text);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{height:124px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(46,211,183,.16);background:#FBFFFE;
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger);background:#FFFBFB;}
.err-tip{display:none;font-size:13px;color:var(--danger);margin-top:6px;}
.field.has-error .err-tip{display:block;}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-3);margin:4px 0 22px;line-height:1.6;}
.agree input{width:16px;height:16px;margin-top:5px;flex:none;accent-color:var(--brand);}
.form-msg{display:none;margin-top:16px;font-size:14px;padding:12px 14px;border-radius:10px;line-height:1.6;}
.form-msg.ok{display:block;background:#EAFBF7;color:var(--accent-deep);border-left:3px solid var(--accent);}
.form-msg.bad{display:block;background:#FEF1F1;color:var(--danger);border-left:3px solid var(--danger);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding-top:72px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:300px;}
.footer-grid h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{display:inline-block;font-size:14px;color:rgba(255,255,255,.7);transition:color .2s,transform .2s;}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{background:#0F0C24;padding:20px 0;font-size:12.5px;color:rgba(255,255,255,.5);}
.footer-bottom .container{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:12px 16px 100px;overflow-y:auto;
    transform:translateX(102%);transition:transform .3s ease;
    box-shadow:var(--shadow-2);
  }
  .main-nav.is-open{transform:translateX(0);}
  .site-header .nav-link,
  .site-header.is-solid .nav-link{
    display:flex;align-items:center;height:52px;padding:0 8px;
    color:var(--text-2);font-size:16px;border-bottom:1px solid var(--line);
  }
  .site-header .nav-link.active{color:var(--brand);}
  .nav-link::after{display:none;}
  .mobile-only{display:block;margin-top:20px;}
  .hero{padding:124px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{order:-1;aspect-ratio:16/10;}
  .hero h1{font-size:32px;}
  .hero-copy{order:1;}
  .hero-stats{gap:32px;}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .latest-grid{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .section{padding:60px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:23px;}
  .tier-item:nth-child(2),.tier-item:nth-child(3){margin-left:0;}
  .tier-item:nth-child(2)::before,.tier-item:nth-child(3)::before{left:0;}
  .tier-item{padding-left:34px;}
  .tier-title h3{font-size:18px;}
  .cta-strip-inner{flex-direction:column;align-items:flex-start;}
  .cta-strip .btn{width:100%;}
  .table-action{text-align:left;}
  .table-action .btn{width:100%;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero{padding:112px 0 56px;}
  .hero h1{font-size:27px;}
  .hero-sub{font-size:16px;}
  .hero-cta .btn{width:100%;}
  .hero-stats{gap:20px;}
  .hero-stat strong{font-size:20px;}
  .hero-float{flex-direction:column;gap:8px;}
  .hero-float img{width:44px;height:44px;}
  .trust-grid{grid-template-columns:1fr;}
  .lead-body{padding:20px;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;}
  .compare-table th,.compare-table td{padding:0 16px;font-size:14px;}
}

/* roulang page: category1 */
:root{
  --ink-900:#14102E;
  --ink-700:#241C52;
  --brand:#FF7A1A;
  --brand-600:#E85F00;
  --accent:#2ED3B7;
  --warn:#FFC53D;
  --bg:#F7F6FC;
  --surface:#FFFFFF;
  --line:#E5E2F3;
  --text:#1A1733;
  --text-2:#5A5677;
  --text-3:#8B87A6;
  --danger:#E5484D;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-1:0 2px 8px rgba(20,16,46,.06);
  --shadow-2:0 10px 30px rgba(20,16,46,.10);
  --shadow-cta:0 8px 20px rgba(255,122,26,.28);
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:64px; --sp-7:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-cta)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,26,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(255,122,26,.24)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-outline:hover{background:var(--ink-900);color:#fff;transform:translateY(-2px)}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-arrow{transition:transform .18s ease;display:inline-block}
.btn:hover .btn-arrow{transform:translateX(3px)}
.btn-block{width:100%}
.mobile-only{display:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;font-size:12.5px;font-weight:600;line-height:1.5;
}
.badge-accent{background:rgba(46,211,183,.14);color:#12836E}
.badge-brand{background:var(--brand);color:#fff}
.badge-warn{background:var(--warn);color:#4A3400}
.badge-soft{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:transparent;
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;letter-spacing:.01em;transition:color .25s ease}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex:none;
  display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,var(--brand),#FFAE62);
  box-shadow:0 6px 14px rgba(255,122,26,.32);
}
.brand-text em{font-style:normal;color:var(--brand);margin-left:2px}
.site-header.is-scrolled .brand{color:var(--ink-900)}
.main-nav{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;border-radius:8px;
  font-size:15px;color:rgba(255,255,255,.86);transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.10)}
.nav-link.active{color:#fff;font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:var(--brand);
}
.site-header.is-scrolled .nav-link{color:var(--text-2)}
.site-header.is-scrolled .nav-link:hover{color:var(--ink-900);background:var(--bg)}
.site-header.is-scrolled .nav-link.active{color:var(--ink-900)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.32);border-radius:10px;
  background:rgba(255,255,255,.08);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .25s ease,opacity .2s ease}
.site-header.is-scrolled .nav-toggle{border-color:var(--line);background:#fff}
.site-header.is-scrolled .nav-toggle span{background:var(--ink-900)}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 分类 Banner ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--ink-900) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:158px 0 72px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(20,16,46,.94) 0%,rgba(20,16,46,.82) 45%,rgba(36,28,82,.66) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.28) 1px,transparent 1px);
  background-size:34px 34px;
  mask-image:linear-gradient(120deg,rgba(0,0,0,.55),transparent 62%);
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.55),transparent 62%);
}
.page-hero .container{position:relative;z-index:2}
.hero-slant{
  position:absolute;right:-40px;bottom:56px;width:min(420px,42%);height:4px;z-index:1;
  background:linear-gradient(90deg,transparent,var(--brand));
  transform:skewX(-26deg);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.82);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.42)}
.breadcrumb .current{color:rgba(255,255,255,.6)}
.page-hero h1{
  font-size:clamp(26px,3.4vw,42px);font-weight:800;line-height:1.25;letter-spacing:.01em;
  max-width:820px;margin-bottom:18px;
}
.page-hero .hero-sub{font-size:18px;color:rgba(255,255,255,.84);max-width:660px;margin-bottom:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section--white{background:#fff}
.section-head{max-width:740px;margin-bottom:44px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;letter-spacing:.01em}
.section-head p{color:var(--text-2);font-size:16.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;margin-bottom:14px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:#12836E;text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--accent)}

/* ---------- 介绍 ---------- */
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.intro-text p{color:var(--text-2);font-size:16.5px}
.intro-media{position:relative}
.intro-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);box-shadow:var(--shadow-2);background:linear-gradient(140deg,var(--ink-700),var(--ink-900))}
.intro-media .float-card{
  position:absolute;left:-18px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow-2);padding:16px 18px;max-width:250px;
}
.float-card .fc-label{display:block;font-size:12.5px;font-weight:700;color:var(--brand);margin-bottom:6px}
.float-card .fc-text{font-size:14px;color:var(--text-2);line-height:1.6;margin:0}

/* ---------- 卖点卡片 ---------- */
.point-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.point-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(255,122,26,.38)}
.point-card .pc-index{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;margin-bottom:16px;
  background:rgba(46,211,183,.14);color:#12836E;font-size:14px;font-weight:800;font-variant-numeric:tabular-nums;
}
.point-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.point-card p{color:var(--text-2);font-size:15.5px;margin:0}

/* ---------- 时间轴 ---------- */
.timeline-wrap{display:grid;grid-template-columns:.75fr 1.25fr;gap:56px;align-items:start}
.timeline{position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:2px;background:var(--line)}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-34px;top:6px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--accent);
}
.tl-item.is-current .tl-dot{background:var(--brand);border-color:var(--brand);transform:scale(1.2);box-shadow:0 0 0 4px rgba(255,122,26,.16)}
.tl-step{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--text-3);margin-bottom:6px;font-variant-numeric:tabular-nums}
.tl-item h3{font-size:19px;font-weight:600;margin-bottom:8px}
.tl-item p{color:var(--text-2);font-size:15.5px;margin:0}

/* ---------- 场景图文 ---------- */
.scenario-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:32px 0}
.scenario-row + .scenario-row{border-top:1px solid var(--line);margin-top:12px}
.scenario-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);box-shadow:var(--shadow-1);background:linear-gradient(140deg,var(--ink-700),var(--ink-900))}
.scenario-row.reverse .scenario-media{order:2}
.scenario-text h3{font-size:21px;font-weight:600;margin-bottom:14px}
.scenario-text p{color:var(--text-2);font-size:16px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  color:#12836E;font-size:15px;font-weight:600;
  border-bottom:2px solid rgba(46,211,183,.5);padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover{color:var(--brand);border-color:var(--brand)}
.link-arrow:hover span{transform:translateX(3px)}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);transition:color .2s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-q .faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  border:1.5px solid var(--brand);color:var(--brand);font-size:16px;line-height:1;font-weight:700;
  transition:transform .25s ease,background-color .2s ease,color .2s ease;
}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-item.is-open .faq-icon{background:var(--brand);color:#fff;transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease}
.faq-item.is-open .faq-a{max-height:340px;padding-bottom:22px}
.faq-a p{color:var(--text-2);font-size:16px;line-height:1.8;max-width:760px;margin:0}

/* ---------- CTA 条带 ---------- */
.cta-strip{
  position:relative;background:var(--ink-900);color:#fff;
  border-top:2px solid var(--brand);border-bottom:2px solid var(--brand);
  padding:56px 0;overflow:hidden;
}
.cta-strip::before{
  content:"";position:absolute;inset:0;opacity:.07;
  background-image:repeating-linear-gradient(115deg,#fff 0 2px,transparent 2px 14px);
}
.cta-strip-inner{position:relative;display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.cta-strip-text{flex:1 1 320px;margin:0;font-size:18px;color:rgba(255,255,255,.9);line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-top:72px;padding-bottom:48px}
.site-footer .brand{color:#fff;margin-bottom:16px}
.site-footer .footer-brand p{font-size:14.5px;line-height:1.75;color:rgba(255,255,255,.62);margin:0;max-width:320px}
.site-footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-links li{margin-bottom:10px}
.footer-links a{
  display:inline-block;font-size:14.5px;color:rgba(255,255,255,.7);
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{background:#0F0C24;padding:18px 0}
.footer-bottom .container{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.5)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .header-actions .btn-primary{display:none}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;
    padding:16px 20px 28px;gap:0;overflow-y:auto;
    transform:translateX(100%);transition:transform .3s ease;
    box-shadow:var(--shadow-2);
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{
    height:52px;padding:0 8px;border-radius:0;font-size:16px;color:var(--ink-900);
    border-bottom:1px solid var(--line);
  }
  .nav-link:hover,.site-header.is-scrolled .nav-link:hover{background:transparent;color:var(--brand)}
  .nav-link.active,.site-header.is-scrolled .nav-link.active{color:var(--ink-900);font-weight:700}
  .nav-link.active::after{left:8px;right:auto;width:22px;bottom:14px}
  .mobile-only{display:inline-flex;margin-top:20px;height:52px}
  .intro-grid,.timeline-wrap{grid-template-columns:1fr;gap:40px}
  .point-grid{grid-template-columns:repeat(2,1fr)}
  .scenario-row{grid-template-columns:1fr;gap:24px}
  .scenario-row.reverse .scenario-media{order:0}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;padding-top:56px}
  .page-hero{padding:132px 0 56px}
  .intro-media .float-card{left:auto;right:16px;bottom:-20px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .point-grid{grid-template-columns:1fr}
  .page-hero{padding:118px 0 48px}
  .page-hero .hero-sub{font-size:16.5px}
  .hero-slant{display:none}
  .footer-grid{grid-template-columns:1fr}
  .cta-strip{padding:44px 0}
  .cta-strip-inner{flex-direction:column;align-items:stretch;text-align:center}
  .cta-strip-inner .badge{align-self:center}
  .cta-strip .btn{width:100%}
  .footer-bottom .container{flex-direction:column;align-items:flex-start}
  .intro-media .float-card{position:static;margin-top:16px;max-width:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --ink-900:#14102E;
  --ink-700:#241C52;
  --brand:#FF7A1A;
  --brand-600:#E85F00;
  --accent:#2ED3B7;
  --warn:#FFC53D;
  --bg:#F7F6FC;
  --surface:#FFFFFF;
  --line:#E5E2F3;
  --text:#1A1733;
  --text-2:#5A5677;
  --text-3:#8B87A6;
  --danger:#E5484D;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 2px 8px rgba(20,16,46,.06);
  --shadow-2:0 10px 30px rgba(20,16,46,.10);
  --shadow-cta:0 8px 20px rgba(255,122,26,.28);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px; --sp-8:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(255,122,26,.22)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border:0;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-cta);border-radius:14px 10px 10px 10px}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(255,122,26,.22)}
.btn-ghost{background:transparent;color:var(--ink-700);border:1.5px solid var(--ink-700)}
.btn-ghost:hover{background:var(--ink-700);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-arrow{display:inline-block;transition:transform .2s ease}
.btn:hover .btn-arrow{transform:translateX(3px)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-pill);font-size:12.5px;font-weight:600;line-height:1;letter-spacing:.01em}
.badge-accent{background:rgba(46,211,183,.16);color:#10806D}
.badge-brand{background:var(--brand);color:#fff}
.badge-warn{background:var(--warn);color:#4A3600}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--ink-900);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(20,16,46,.3)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;letter-spacing:.01em}
.brand-mark{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),#FFA65C);color:#fff}
.brand-text em{font-style:normal;color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;
  color:rgba(255,255,255,.78);font-size:15px;font-weight:500}
.nav-link:hover{color:#fff}
.nav-link.active{color:var(--brand);font-weight:700}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;background:var(--brand)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:12px}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  background:transparent;border:1px solid rgba(255,255,255,.26);border-radius:10px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .22s ease,opacity .22s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-only{display:none}

/* ---------- page head ---------- */
.page-head{background:var(--surface);border-bottom:1px solid var(--line);
  background-image:radial-gradient(rgba(20,16,46,.055) 1px,transparent 1px);background-size:22px 22px}
.crumbs-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3)}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#C6C2DC}
.crumbs .current{color:var(--text-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{padding:22px 0 44px;max-width:880px}
.article-head h1{font-size:38px;font-weight:800;line-height:1.28;letter-spacing:-.01em;margin-top:16px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:20px;font-size:13.5px;color:var(--text-3)}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row .dot{width:5px;height:5px;border-radius:50%;background:var(--accent);display:inline-block}

/* ---------- article layout ---------- */
.article-section{padding:48px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start}
.card-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1)}
.article-body{padding:48px 56px 40px}
.article-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.article-foot .hint{font-size:13.5px;color:var(--text-3)}
.article-aside{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.aside-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1)}
.aside-card h3{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.aside-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand)}
.aside-list li+li{margin-top:6px}
.aside-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14.5px;color:var(--text-2);
  padding:9px 10px;border-radius:10px}
.aside-list a:hover{color:var(--brand);background:var(--bg)}
.aside-list a .go{color:var(--accent);font-size:13px;transition:transform .2s ease}
.aside-list a:hover .go{transform:translateX(3px);color:var(--brand)}
.aside-note{font-size:13.5px;line-height:1.8;color:var(--text-3)}
.aside-note strong{color:var(--text-2);font-weight:600}

/* ---------- prose (CMS body) ---------- */
.prose{font-size:17px;line-height:1.9;color:#27244C;overflow-x:auto}
.prose>*+*{margin-top:1.2em}
.prose p{margin:0}
.prose h2{font-size:28px;font-weight:800;line-height:1.4;margin:1.6em 0 .6em;padding-left:14px;border-left:4px solid var(--brand)}
.prose h3{font-size:22px;font-weight:600;line-height:1.45;margin:1.5em 0 .55em}
.prose h4{font-size:18px;font-weight:700;margin:1.3em 0 .5em}
.prose ul{margin:1.1em 0;padding:0}
.prose ul li{position:relative;padding-left:22px;margin:.5em 0}
.prose ul li::before{content:"";position:absolute;left:4px;top:.75em;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.prose ol{counter-reset:pnum;margin:1.1em 0;padding:0}
.prose ol li{counter-increment:pnum;position:relative;padding-left:32px;margin:.5em 0}
.prose ol li::before{content:counter(pnum);position:absolute;left:0;top:.36em;width:21px;height:21px;border-radius:7px;
  display:grid;place-items:center;background:rgba(255,122,26,.13);color:var(--brand-600);font-size:12.5px;font-weight:700;line-height:1}
.prose blockquote{margin:1.4em 0;padding:20px 22px;background:rgba(46,211,183,.09);border-left:3px solid var(--accent);
  border-radius:0 12px 12px 0;color:#2A2752}
.prose blockquote p+p{margin-top:.8em}
.prose a{color:#128B77;text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--brand)}
.prose img{border-radius:var(--radius-img);margin:1.4em 0;height:auto}
.prose figure{margin:1.4em 0}
.prose figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:8px}
.prose table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.prose th{background:var(--ink-700);color:#fff;font-weight:600;text-align:left;padding:12px 14px}
.prose td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:top}
.prose tbody tr:nth-child(even){background:#FBFAFE}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.prose code{background:var(--bg);border:1px solid var(--line);padding:2px 6px;border-radius:6px;font-size:14px}

/* ---------- empty state ---------- */
.empty-state{text-align:center;padding:64px 24px}
.empty-icon{width:64px;height:64px;margin:0 auto 20px;border-radius:20px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(46,211,183,.18),rgba(255,122,26,.14));color:var(--ink-700);font-size:28px}
.empty-state h2{font-size:24px;margin-bottom:12px}
.empty-state p{font-size:15px;color:var(--text-2);max-width:460px;margin:0 auto 24px;line-height:1.85}

/* ---------- related ---------- */
.related-section{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-head h2{font-size:28px}
.section-head .sub{font-size:14.5px;color:var(--text-2);margin-top:8px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rec-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#FFD3AE}
.rec-media{aspect-ratio:4/3;background:linear-gradient(135deg,var(--ink-700),var(--ink-900));overflow:hidden}
.rec-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rec-card:hover .rec-media img{transform:scale(1.04)}
.rec-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-body h3{font-size:17px;font-weight:600;line-height:1.5}
.rec-body h3 a:hover{color:var(--brand)}
.rec-meta{margin-top:auto;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px}

/* ---------- cta band ---------- */
.cta-band{margin-top:88px;background:var(--ink-900);border-top:2px solid var(--brand);border-bottom:2px solid var(--brand);
  color:#fff;background-image:linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 14px);background-size:14px 14px}
.cta-band .inner{display:flex;align-items:center;gap:24px;padding:40px 0;flex-wrap:wrap}
.cta-band .band-title{font-size:22px;font-weight:800;line-height:1.4}
.cta-band .band-desc{font-size:14.5px;color:rgba(255,255,255,.7);margin-top:6px}
.cta-band .band-action{margin-left:auto;display:flex;align-items:center;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding:64px 0 48px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-links li+li{margin-top:10px}
.footer-links a{display:inline-block;font-size:14px;color:rgba(255,255,255,.68)}
.footer-links a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{background:#0F0C24;padding:18px 0;font-size:12.5px;color:rgba(255,255,255,.5)}
.footer-bottom .container{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .header-inner{gap:16px}
  .nav-toggle{display:flex}
  .main-nav{position:fixed;left:0;right:0;top:72px;bottom:0;margin:0;padding:20px 24px 32px;
    flex-direction:column;align-items:stretch;gap:0;background:var(--ink-900);overflow-y:auto;
    transform:translateY(-10px);opacity:0;visibility:hidden;transition:opacity .24s ease,transform .24s ease,visibility .24s}
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-link{height:52px;padding:0 4px;font-size:16px;border-bottom:1px solid rgba(255,255,255,.09)}
  .nav-link.active::after{display:none}
  .mobile-only{display:inline-flex;margin-top:24px}
  .header-actions .btn-primary{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-aside{position:static}
  .article-body{padding:36px 32px 32px}
  .article-head h1{font-size:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 36px}
}
@media (max-width:768px){
  .crumbs-row{flex-direction:column;align-items:flex-start;gap:14px}
  .crumbs .current{max-width:100%;white-space:normal}
  .article-head{padding:18px 0 32px}
  .article-head h1{font-size:27px}
  .article-body{padding:26px 20px 24px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .section-head{flex-direction:column;align-items:flex-start}
  .cta-band .inner{flex-direction:column;align-items:flex-start;padding:32px 0}
  .cta-band .band-action{margin-left:0;width:100%}
  .cta-band .band-action .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand{font-size:16px}
  .prose{font-size:16.5px}
  .prose h2{font-size:22px}
  .prose h3{font-size:19px}
  .article-head h1{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
}

/* roulang page: category2 */
:root{
  --ink-900:#14102E;
  --ink-700:#241C52;
  --brand:#FF7A1A;
  --brand-600:#E85F00;
  --accent:#2ED3B7;
  --warn:#FFC53D;
  --bg:#F7F6FC;
  --surface:#FFFFFF;
  --line:#E5E2F3;
  --text:#1A1733;
  --text-2:#5A5677;
  --text-3:#8B87A6;
  --danger:#E5484D;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 2px 8px rgba(20,16,46,.06);
  --shadow-2:0 10px 30px rgba(20,16,46,.10);
  --shadow-cta:0 8px 20px rgba(255,122,26,.28);
  --container:1200px;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  font-feature-settings:"tnum" 1;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 按钮体系 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1.5px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-arrow{display:inline-block;transition:transform .18s ease;font-size:15px;}
.btn:hover .btn-arrow{transform:translateX(3px);}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:var(--shadow-cta);
  border-radius:2px 10px 10px 10px;
}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,26,.32);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-cta);}
.btn-outline{
  background:transparent;
  color:var(--ink-700);
  border-color:var(--ink-700);
}
.btn-outline:hover{background:var(--ink-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-light-outline{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.6);
}
.btn-light-outline:hover{background:#fff;color:var(--ink-900);transform:translateY(-2px);}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent);
  font-size:14px;
  font-weight:600;
}
.link-more:hover{color:var(--brand);}
.link-more:hover .btn-arrow{transform:translateX(3px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12.5px;
  font-weight:600;
  padding:4px 10px;
  border-radius:999px;
  line-height:1.4;
}
.badge-cat{background:rgba(46,211,183,.14);color:#12856F;}
.badge-promo{background:var(--brand);color:#fff;}
.badge-warn{background:var(--warn);color:#5A3E00;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:var(--nav-h);
  background:transparent;
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header .brand-text,.site-header .nav-link{color:#fff;}
.site-header .brand-mark{color:var(--brand);}
.site-header.is-scrolled{
  background:var(--surface);
  box-shadow:var(--shadow-1);
}
.site-header.is-scrolled .brand-text,.site-header.is-scrolled .nav-link{color:var(--text);}
.site-header.is-scrolled .nav-link:hover{color:var(--brand);}
.site-header.is-scrolled .nav-link.active{color:var(--brand);}
.header-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.02em;}
.brand-mark{
  width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--ink-700),var(--ink-900));
  color:var(--brand);
  box-shadow:0 4px 12px rgba(20,16,46,.22);
}
.brand-text{font-size:18px;color:var(--text);white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  font-weight:500;
  border-radius:8px;
  min-height:44px;
  display:inline-flex;
  align-items:center;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.nav-link:hover{color:var(--brand);}
.header-actions{display:flex;align-items:center;gap:12px;}
.mobile-only{display:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  padding:11px 10px;
  flex-direction:column;
  justify-content:space-between;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .22s ease,opacity .22s ease;}
.site-header:not(.is-scrolled) .nav-toggle{color:#fff;}
.site-header.is-scrolled .nav-toggle{color:var(--ink-900);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(9px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-9px) rotate(-45deg);}

/* ---------- 分类横幅 ---------- */
.cat-hero{
  position:relative;
  min-height:260px;
  display:flex;
  align-items:flex-end;
  padding:calc(var(--nav-h) + 40px) 0 44px;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(20,16,46,.94) 0%,rgba(20,16,46,.82) 48%,rgba(36,28,82,.68) 100%);
}
.cat-hero::after{
  content:"";
  position:absolute;
  top:0;right:-60px;
  width:340px;height:100%;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 16px);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero h1{
  font-size:42px;
  font-weight:800;
  line-height:1.25;
  letter-spacing:.02em;
  margin-top:14px;
}
.cat-hero .hero-sub{
  margin-top:14px;
  font-size:18px;
  line-height:1.7;
  color:rgba(255,255,255,.86);
  max-width:640px;
}
.hero-accent{
  width:64px;height:4px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),rgba(255,122,26,.15));
  margin-top:22px;
  transform:skewX(-18deg);
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  margin-top:20px;
  font-size:13.5px;
  color:rgba(255,255,255,.72);
}
.breadcrumb a{color:rgba(255,255,255,.9);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(255,255,255,.4);}
.breadcrumb .current{color:rgba(255,255,255,.62);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--bg);}
.section-white{background:var(--surface);}
.section-dark{background:var(--ink-900);color:#fff;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{
  font-size:30px;
  font-weight:700;
  line-height:1.35;
  letter-spacing:.01em;
}
.section-head p{
  margin-top:14px;
  color:var(--text-2);
  font-size:16.5px;
}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:10px;
}

/* ---------- 分类介绍 ---------- */
.intro-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:start;
}
.intro-copy p{color:var(--text-2);font-size:17px;line-height:1.9;}
.intro-copy p + p{margin-top:18px;}
.intro-copy strong{color:var(--text);font-weight:700;}
.intro-side{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-1);
}
.intro-side h3{font-size:19px;font-weight:700;margin-bottom:16px;}
.metric-list li{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:14px 0;
  border-bottom:1px dashed var(--line);
}
.metric-list li:last-child{border-bottom:0;padding-bottom:0;}
.metric-num{
  font-size:24px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:-.02em;
  min-width:56px;
}
.metric-txt{font-size:14.5px;color:var(--text-2);line-height:1.6;}

/* ---------- 左图右文交替 ---------- */
.alt-rows{display:flex;flex-direction:column;gap:36px;}
.alt-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:36px;
  align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.alt-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#FFE0C7;}
.alt-row:nth-child(even) .alt-media{order:2;}
.alt-media{
  position:relative;
  aspect-ratio:4/3;
  border-radius:var(--radius-img);
  overflow:hidden;
  background:linear-gradient(135deg,var(--ink-700),var(--ink-900));
}
.alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.alt-row:hover .alt-media img{transform:scale(1.04);}
.alt-media .badge{position:absolute;left:14px;top:14px;background:rgba(20,16,46,.78);color:#fff;backdrop-filter:blur(2px);}
.alt-body h3{font-size:22px;font-weight:600;line-height:1.4;}
.alt-body p{margin-top:12px;color:var(--text-2);font-size:16px;}
.alt-points{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.alt-points li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  color:var(--text-2);
}
.alt-points li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--accent);
}
.alt-body .link-more{margin-top:20px;}

/* ---------- 速递栏目表 ---------- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  box-shadow:var(--shadow-1);
  -webkit-overflow-scrolling:touch;
}
table.spec{
  width:100%;
  min-width:680px;
  border-collapse:collapse;
  font-size:15px;
}
table.spec thead th{
  background:var(--ink-700);
  color:#fff;
  text-align:left;
  font-weight:600;
  padding:16px 20px;
  letter-spacing:.02em;
  white-space:nowrap;
}
table.spec tbody td{
  padding:18px 20px;
  border-top:1px solid var(--line);
  color:var(--text-2);
  vertical-align:top;
}
table.spec tbody tr:nth-child(even){background:#FBFAFE;}
table.spec tbody td:first-child{color:var(--text);font-weight:600;}
.table-hint{
  margin-top:14px;
  font-size:13.5px;
  color:var(--text-3);
  display:flex;
  align-items:center;
  gap:8px;
}
.table-hint::before{
  content:"";
  width:14px;height:2px;border-radius:2px;background:var(--brand);
}
.table-notes{
  margin-top:40px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.note-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
}
.note-card h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.note-card p{font-size:14.5px;color:var(--text-2);}

/* ---------- 核对标准 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:8fr 4fr;
  gap:44px;
  align-items:start;
}
.check-list{counter-reset:chk;display:flex;flex-direction:column;gap:18px;}
.check-list li{
  counter-increment:chk;
  position:relative;
  padding:20px 24px 20px 68px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:border-color .2s ease,transform .2s ease;
}
.check-list li:hover{border-color:#FFE0C7;transform:translateY(-2px);}
.check-list li::before{
  content:counter(chk,decimal-leading-zero);
  position:absolute;
  left:24px;top:20px;
  font-size:15px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:-.02em;
}
.check-list h3{font-size:17px;font-weight:600;}
.check-list p{margin-top:6px;font-size:14.5px;color:var(--text-2);}
.aside-panel{
  background:var(--ink-900);
  color:#fff;
  border-radius:var(--radius-card);
  padding:28px;
  position:relative;
  overflow:hidden;
}
.aside-panel::after{
  content:"";
  position:absolute;right:-40px;bottom:-40px;
  width:160px;height:160px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(46,211,183,.28),transparent 70%);
}
.aside-panel h3{font-size:19px;font-weight:700;position:relative;z-index:2;}
.aside-panel p{
  margin-top:12px;
  font-size:14.5px;
  color:rgba(255,255,255,.78);
  position:relative;z-index:2;
}
.aside-panel .badge{margin-top:18px;position:relative;z-index:2;}
.aside-links{margin-top:22px;display:flex;flex-direction:column;gap:12px;position:relative;z-index:2;}
.aside-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:14.5px;
  color:rgba(255,255,255,.82);
  padding:12px 14px;
  border:1px solid rgba(255,255,255,.16);
  border-radius:10px;
  transition:background-color .2s ease,color .2s ease,transform .2s ease;
}
.aside-links a:hover{background:rgba(255,255,255,.08);color:var(--brand);transform:translateX(2px);}

/* ---------- 限时条带 ---------- */
.cta-band{
  background:var(--ink-900);
  border-top:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  padding:56px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.06) 0 1px,transparent 1px 18px);
  opacity:.8;
  pointer-events:none;
}
.cta-band .container{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-text{max-width:640px;color:#fff;}
.cta-text h2{font-size:26px;font-weight:700;margin-top:14px;line-height:1.4;}
.cta-text p{margin-top:10px;color:rgba(255,255,255,.76);font-size:16px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#fff;padding-top:72px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.7);max-width:320px;line-height:1.8;}
.site-footer h4{
  font-size:15px;
  font-weight:700;
  margin-bottom:18px;
  color:#fff;
  letter-spacing:.02em;
}
.footer-links li + li{margin-top:12px;}
.footer-links a{
  font-size:14.5px;
  color:rgba(255,255,255,.7);
  display:inline-block;
  transition:color .18s ease,transform .18s ease;
}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  background:#0F0C24;
  padding:18px 0;
  font-size:12.5px;
  color:rgba(255,255,255,.55);
}
.footer-bottom .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .main-nav{
    position:fixed;
    top:var(--nav-h);left:0;right:0;bottom:0;
    background:var(--ink-900);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:12px 20px 96px;
    overflow-y:auto;
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .main-nav .nav-link{
    color:#fff;
    font-size:16px;
    height:52px;
    padding:0 8px;
    border-radius:0;
    border-bottom:1px solid rgba(255,255,255,.1);
    display:flex;
    align-items:center;
    width:100%;
  }
  .main-nav .nav-link::after{left:8px;right:auto;width:28px;bottom:12px;}
  .main-nav .nav-link:hover{color:var(--brand);}
  .nav-toggle{display:flex;}
  .header-actions .btn:not(.mobile-only){display:none;}
  .main-nav .mobile-only{display:inline-flex;margin-top:28px;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .alt-row{grid-template-columns:1fr;gap:24px;}
  .alt-row:nth-child(even) .alt-media{order:0;}
  .table-notes{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cat-hero h1{font-size:34px;}
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .cat-hero{min-height:auto;padding:calc(var(--nav-h) + 28px) 0 36px;}
  .cat-hero h1{font-size:28px;line-height:1.3;}
  .cat-hero .hero-sub{font-size:16px;}
  .section-head h2{font-size:23px;}
  .section-head{margin-bottom:32px;}
  .alt-body h3{font-size:19px;}
  .check-list li{padding:18px 20px 18px 58px;}
  .check-list li::before{left:20px;top:18px;}
  .cta-band .container{flex-direction:column;align-items:stretch;text-align:left;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom .container{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .cat-hero h1{font-size:26px;}
  .brand-text{font-size:16px;}
  .intro-copy p{font-size:16px;}
  .cta-text h2{font-size:21px;}
  .metric-num{font-size:21px;min-width:48px;}
}

/* roulang page: category3 */
:root{
  --ink-900:#14102E;
  --ink-700:#241C52;
  --brand:#FF7A1A;
  --brand-600:#E85F00;
  --accent:#2ED3B7;
  --warn:#FFC53D;
  --bg:#F7F6FC;
  --surface:#FFFFFF;
  --line:#E5E2F3;
  --text:#1A1733;
  --text-2:#5A5677;
  --text-3:#8B87A6;
  --danger:#E5484D;
  --radius:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 2px 8px rgba(20,16,46,.06);
  --shadow-2:0 10px 30px rgba(20,16,46,.10);
  --shadow-cta:0 8px 20px rgba(255,122,26,.28);
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:64px; --sp-7:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;}
h1{font-size:42px;font-weight:800;letter-spacing:-.01em;}
h2{font-size:30px;}
h3{font-size:21px;font-weight:600;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--bg{background:var(--surface);}
.section--muted{background:var(--bg);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);text-transform:none;margin-bottom:14px;
}
.section-head .eyebrow::before{
  content:"";width:18px;height:2px;background:var(--accent);border-radius:2px;
}
.section-head p{color:var(--text-2);font-size:16px;margin-top:12px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:200;
  background:transparent;
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled,
.site-header.is-open{
  background:rgba(255,255,255,.98);
  box-shadow:var(--shadow-1);
  border-bottom-color:var(--line);
  backdrop-filter:saturate(180%) blur(8px);
}
.header-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.01em;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand),#FF9C4D);color:#fff;flex:0 0 auto;
  box-shadow:0 6px 14px rgba(255,122,26,.32);
}
.brand-text{color:#fff;transition:color .28s ease;}
.brand-text em{font-style:normal;color:var(--brand);margin-left:2px;}
.site-header.is-scrolled .brand-text,
.site-header.is-open .brand-text{color:var(--text);}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:rgba(255,255,255,.84);
  padding:6px 0;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.site-header.is-scrolled .nav-link,
.site-header.is-open .nav-link{color:var(--text-2);}
.site-header.is-scrolled .nav-link.active,
.site-header.is-open .nav-link.active{color:var(--brand);}
.site-header.is-scrolled .nav-link:hover,
.site-header.is-open .nav-link:hover{color:var(--brand);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:rgba(255,255,255,.14);cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:background .28s ease,transform .28s ease;}
.site-header.is-scrolled .nav-toggle,
.site-header.is-open .nav-toggle{background:#fff;border-color:var(--line);}
.site-header.is-scrolled .nav-toggle span,
.site-header.is-open .nav-toggle span{background:var(--text);}
.mobile-only{display:none;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,opacity .2s ease;
  white-space:nowrap;
}
.btn-arrow{display:inline-block;transition:transform .2s ease;}
.btn:hover .btn-arrow{transform:translateX(3px);}
.btn-primary{
  background:var(--brand);color:#fff;box-shadow:var(--shadow-cta);
  clip-path:polygon(10px 0,100% 0,100% 100%,0 100%,0 10px);
}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,26,.34);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-cta);}
.btn-ghost{
  background:transparent;color:#fff;border-color:rgba(255,255,255,.55);
}
.btn-ghost:hover{background:var(--ink-700);border-color:var(--ink-700);color:#fff;transform:translateY(-2px);}
.btn-outline{
  background:transparent;color:var(--ink-700);border-color:var(--ink-700);
}
.btn-outline:hover{background:var(--ink-700);color:#fff;transform:translateY(-2px);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn:disabled,.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:15px;
}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.link-arrow:hover{color:var(--brand);}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- banner ---------- */
.page-banner{
  position:relative;isolation:isolate;overflow:hidden;
  background:var(--ink-900);
  padding:164px 0 76px;
  color:#fff;
}
.page-banner__media{
  position:absolute;inset:0;z-index:-2;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-banner::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(115deg,rgba(20,16,46,.92) 0%,rgba(20,16,46,.72) 52%,rgba(36,28,82,.68) 100%);
}
.page-banner::after{
  content:"";position:absolute;right:-60px;top:120px;width:320px;height:4px;border-radius:4px;
  background:linear-gradient(90deg,transparent,var(--brand));
  transform:rotate(-24deg);opacity:.9;
}
.banner-stars{
  position:absolute;inset:0;z-index:-1;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:46px 46px;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.7);margin-bottom:20px;
}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(255,255,255,.4);}
.breadcrumb .current{color:rgba(255,255,255,.55);}
.page-banner h1{max-width:820px;margin-bottom:18px;}
.page-banner .banner-sub{
  max-width:640px;font-size:17px;line-height:1.75;color:rgba(255,255,255,.82);margin:0;
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;font-size:13px;padding:5px 12px;border-radius:999px;
  background:rgba(46,211,183,.14);color:var(--accent);border:1px solid rgba(46,211,183,.32);
}
.tag--promo{background:rgba(255,122,26,.16);color:#FFB273;border-color:rgba(255,122,26,.36);}

/* ---------- intro ---------- */
.intro-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.intro-copy p{color:var(--text-2);font-size:17px;line-height:1.85;}
.intro-copy h2{margin-bottom:20px;}
.intro-figure{
  position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-2);
  border:1px solid var(--line);background:var(--ink-700);
}
.intro-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.intro-figure figcaption{
  position:absolute;left:16px;bottom:16px;right:16px;
  padding:10px 14px;border-radius:10px;font-size:13px;line-height:1.6;
  background:rgba(20,16,46,.72);color:rgba(255,255,255,.9);
}

/* ---------- table ---------- */
.table-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.table-hint{
  display:none;font-size:13px;color:var(--text-3);padding:12px 16px 0;
}
table.security-table{width:100%;border-collapse:collapse;min-width:680px;}
table.security-table thead th{
  background:var(--ink-900);color:#fff;font-size:14px;font-weight:600;text-align:left;
  padding:16px 22px;letter-spacing:.02em;white-space:nowrap;
}
table.security-table tbody td{
  padding:18px 22px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.security-table tbody tr:nth-child(even){background:#FBFAFE;}
table.security-table tbody tr:hover{background:#F4F1FF;}
table.security-table tbody td:first-child{
  color:var(--text);font-weight:600;white-space:nowrap;
}
table.security-table tbody tr:last-child td{border-bottom:none;}
.dot-ok{
  display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-right:8px;
  vertical-align:1px;
}

/* ---------- points ---------- */
.points{display:grid;gap:18px;margin-top:44px;}
.point{
  display:grid;grid-template-columns:72px 1fr;gap:24px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 28px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.point:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#FFD3AE;}
.point .num{
  font-size:26px;font-weight:800;color:var(--brand);letter-spacing:-.02em;line-height:1.2;
  border-right:1px solid var(--line);padding-right:20px;
}
.point h3{margin-bottom:8px;}
.point p{color:var(--text-2);font-size:15.5px;margin:0;}

/* ---------- steps ---------- */
.steps{position:relative;margin-top:40px;padding-left:34px;}
.steps::before{
  content:"";position:absolute;left:8px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--accent),rgba(46,211,183,.18));border-radius:2px;
}
.step{position:relative;padding:0 0 34px 0;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:-34px;top:8px;width:18px;height:18px;border-radius:50%;
  background:var(--surface);border:3px solid var(--accent);
}
.step.is-current::before{background:var(--brand);border-color:var(--brand);transform:scale(1.15);}
.step h3{margin-bottom:6px;}
.step p{color:var(--text-2);font-size:15.5px;margin:0;max-width:720px;}
.step .step-meta{
  display:inline-block;margin-top:10px;font-size:13px;color:var(--ink-700);
  background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:3px 12px;
}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:40px;}
.check-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.check-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#FFD3AE;}
.check-card .ico{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(46,211,183,.14);color:#12A98F;margin-bottom:14px;font-weight:700;
}
.check-card h3{font-size:18px;margin-bottom:8px;}
.check-card p{color:var(--text-2);font-size:15px;margin:0;}

/* ---------- notice ---------- */
.notice{
  background:var(--bg);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:12px;padding:22px 26px;margin-top:32px;
}
.notice h3{font-size:17px;margin-bottom:8px;}
.notice p{color:var(--text-2);font-size:15px;margin:0;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;isolation:isolate;overflow:hidden;
  background:var(--ink-900);color:#fff;padding:56px 0;
  border-top:2px solid var(--brand);border-bottom:2px solid var(--brand);
}
.cta-band::before{
  content:"";position:absolute;inset:0;z-index:-1;opacity:.08;
  background-image:repeating-linear-gradient(115deg,#fff 0 1px,transparent 1px 18px);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-copy{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.badge-warn{
  display:inline-flex;align-items:center;gap:6px;background:var(--warn);color:#3A2A00;
  font-size:12.5px;font-weight:700;padding:5px 12px;border-radius:999px;white-space:nowrap;
}
.cta-copy strong{font-size:20px;font-weight:700;}
.cta-copy span{color:rgba(255,255,255,.75);font-size:15px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);padding-top:72px;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px;}
.site-footer h4{
  font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;letter-spacing:.02em;
}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  font-size:14.5px;color:rgba(255,255,255,.7);display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  background:#0F0C24;padding:20px 0;font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom .container{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  h1{font-size:32px;}
  h2{font-size:25px;}
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .site-header{background:rgba(20,16,46,.35);}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;bottom:auto;
    max-height:calc(100vh - 72px);overflow-y:auto;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:8px 24px 24px;box-shadow:var(--shadow-2);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s;
  }
  body.nav-open .main-nav{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-link{
    height:52px;display:flex;align-items:center;font-size:17px;color:var(--text)!important;
    border-bottom:1px solid var(--line);padding:0;
  }
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--brand)!important;font-weight:700;}
  .mobile-only{display:inline-flex;margin-top:20px;}
  .header-actions .btn-primary{display:none;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .page-banner{padding:140px 0 64px;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .footer-grid{padding-bottom:40px;}
  .check-grid{grid-template-columns:1fr;}
  .point{grid-template-columns:1fr;gap:12px;padding:22px;}
  .point .num{border-right:none;padding-right:0;font-size:22px;}
  .table-hint{display:block;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn{width:100%;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  h1{font-size:26px;}
  h2{font-size:22px;}
  .section{padding:56px 0;}
  .page-banner{padding:124px 0 56px;}
  .page-banner .banner-sub{font-size:15.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .brand{font-size:16.5px;}
  .cta-copy strong{font-size:18px;}
}

/* roulang page: category4 */
:root{
  --ink-900:#14102E;
  --ink-700:#241C52;
  --brand:#FF7A1A;
  --brand-600:#E85F00;
  --accent:#2ED3B7;
  --warn:#FFC53D;
  --bg:#F7F6FC;
  --surface:#FFFFFF;
  --line:#E5E2F3;
  --text:#1A1733;
  --text-2:#5A5677;
  --text-3:#8B87A6;
  --danger:#E5484D;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 2px 8px rgba(20,16,46,.06);
  --shadow-2:0 10px 30px rgba(20,16,46,.10);
  --shadow-cta:0 8px 20px rgba(255,122,26,.28);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.em-num{font-variant-numeric:tabular-nums;letter-spacing:-0.02em;}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-arrow{display:inline-block;transition:transform .2s ease;}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:var(--shadow-cta);
  clip-path:polygon(10px 0,100% 0,100% 100%,0 100%);
}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,26,.34);}
.btn-primary:hover .btn-arrow{transform:translateX(3px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(255,122,26,.24);}
.btn-outline{
  background:transparent;
  color:var(--ink-700);
  border:1.5px solid var(--ink-700);
}
.btn-outline:hover{background:var(--ink-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-outline:active{transform:translateY(0);box-shadow:none;}
.btn-on-dark{
  background:transparent;
  color:#fff;
  border:1.5px solid rgba(255,255,255,.55);
}
.btn-on-dark:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-sm{height:36px;padding:0 16px;font-size:13px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none;}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent);
  font-size:14px;
  font-weight:600;
}
.link-more::after{content:"→";transition:transform .2s ease;}
.link-more:hover{color:var(--brand);}
.link-more:hover::after{transform:translateX(3px);}

/* ============ 徽章与标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  line-height:1.5;
}
.badge-cat{background:rgba(46,211,183,.14);color:#0E8F7B;}
.badge-promo{background:var(--brand);color:#fff;}
.badge-limit{background:var(--warn);color:#4A3200;}
.badge-soft{background:rgba(255,122,26,.12);color:var(--brand-600);}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  height:72px;
  display:flex;
  align-items:center;
  --hd-text:#FFFFFF;
  --hd-sub:rgba(255,255,255,.72);
  background:transparent;
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease,height .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.97);
  box-shadow:var(--shadow-1);
  border-bottom-color:var(--line);
  --hd-text:var(--text);
  --hd-sub:var(--text-2);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:100%;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:32px;height:32px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand),#FF9A4D);
  color:#fff;
  box-shadow:0 6px 14px rgba(255,122,26,.28);
}
.brand-text{
  font-size:18px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--hd-text);
  transition:color .25s ease;
}
.brand-text em{font-style:normal;color:var(--brand);}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  font-size:15px;
  font-weight:500;
  color:var(--hd-sub);
  border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link.active{color:var(--brand);font-weight:700;}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  border:1px solid rgba(255,255,255,.35);
}
.site-header.is-scrolled .nav-toggle{border-color:var(--line);}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--hd-text);
  transition:transform .25s ease,opacity .2s ease,background .25s ease;
}
.mobile-only{display:none;}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:rgba(255,255,255,.7);
}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:rgba(255,255,255,.6);}

/* ============ 页面 Banner ============ */
.page-banner{
  position:relative;
  padding:152px 0 72px;
  color:#fff;
  background:
    radial-gradient(rgba(255,255,255,.16) 1px, transparent 1px) 0 0/26px 26px,
    linear-gradient(115deg, rgba(20,16,46,.94) 0%, rgba(20,16,46,.78) 52%, rgba(36,28,82,.82) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat,
    var(--ink-900);
  overflow:hidden;
}
.page-banner::after{
  content:"";
  position:absolute;
  left:-40px;bottom:-90px;
  width:420px;height:180px;
  background:linear-gradient(90deg,var(--brand),rgba(255,122,26,0));
  opacity:.35;
  transform:skewX(-24deg);
  pointer-events:none;
}
.banner-inner{position:relative;z-index:2;max-width:820px;}
.banner-inner h1{
  margin-top:18px;
  font-size:42px;
  font-weight:800;
  line-height:1.25;
  letter-spacing:.01em;
}
.banner-sub{
  margin-top:16px;
  font-size:18px;
  line-height:1.75;
  color:rgba(255,255,255,.8);
  max-width:640px;
}
.banner .breadcrumb{margin-top:26px;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section.bg-white{background:var(--surface);}
.section.bg-soft{background:var(--bg);}
.section.bg-deep{background:var(--ink-900);color:#fff;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand);
  text-transform:none;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:var(--brand);
  border-radius:2px;
}
h2.section-title{
  margin-top:14px;
  font-size:30px;
  font-weight:700;
  line-height:1.35;
}
.section-sub{
  margin-top:14px;
  font-size:16px;
  color:var(--text-2);
  line-height:1.85;
}
.section.bg-deep .section-sub{color:rgba(255,255,255,.72);}

/* ============ 介绍区 ============ */
.intro-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:start;
}
.prose p{font-size:16.5px;line-height:1.85;color:var(--text-2);margin-bottom:1.2em;}
.prose p:last-child{margin-bottom:0;}
.prose strong{color:var(--text);font-weight:700;}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  padding:32px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
}
.stat-item{border-left:2px solid var(--line);padding-left:18px;}
.stat-item:first-child{border-left-color:var(--brand);}
.stat-num{
  font-size:24px;
  font-weight:800;
  color:var(--ink-700);
  line-height:1.2;
}
.stat-label{margin-top:6px;font-size:13.5px;color:var(--text-3);}

/* ============ 设备卡片 ============ */
.device-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.device-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.device-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#FFD6B8;}
.device-card h3{font-size:20px;font-weight:600;line-height:1.5;}
.device-card p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text-2);}
.device-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border-radius:12px;
  background:rgba(46,211,183,.14);
  color:#0E8F7B;
  margin-bottom:18px;
}
.device-meta{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

/* ============ 对比表 ============ */
.table-scroll{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  box-shadow:var(--shadow-1);
  -webkit-overflow-scrolling:touch;
}
.compare-table{min-width:720px;font-size:15px;}
.compare-table th,.compare-table td{
  padding:18px 22px;
  text-align:left;
  border-bottom:1px solid var(--line);
  height:56px;
  vertical-align:top;
}
.compare-table thead th{
  background:var(--ink-900);
  color:#fff;
  font-weight:600;
  font-size:15px;
  border-bottom:0;
}
.compare-table tbody tr:nth-child(even){background:#FBFAFE;}
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table tbody th{
  font-weight:600;
  color:var(--text-2);
  width:170px;
  background:transparent;
}
.compare-table .col-featured{
  background:#FFF7F0;
  border-top:4px solid var(--brand);
}
.compare-table tbody tr:nth-child(even) .col-featured{background:#FFF4EA;}
.col-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.yes{color:#0E8F7B;font-weight:600;}
.dash{color:var(--text-3);}
.table-hint{margin-top:14px;font-size:13.5px;color:var(--text-3);}

.point-list{margin-top:40px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.point-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
}
.point-item h4{font-size:17px;font-weight:600;}
.point-item p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--text-2);}

/* ============ 图文分栏 ============ */
.split{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,6fr);
  gap:48px;
  align-items:center;
}
.split.reverse{grid-template-columns:minmax(0,6fr) minmax(0,5fr);}
.split-media{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  background:linear-gradient(140deg,var(--ink-900),var(--ink-700));
  aspect-ratio:4/3;
  box-shadow:var(--shadow-2);
}
.split-media img{width:100%;height:100%;object-fit:cover;}

.check-list{margin-top:26px;display:grid;gap:14px;}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--text-2);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:4px;top:.72em;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(46,211,183,.16);
}
.check-list li strong{color:var(--text);font-weight:600;}

/* ============ FAQ ============ */
.faq{max-width:880px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  line-height:1.7;
  color:var(--text);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{
  position:relative;
  flex:0 0 22px;
  width:22px;height:22px;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 44px 24px 4px;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  background:
    radial-gradient(rgba(255,255,255,.12) 1px, transparent 1px) 0 0/24px 24px,
    var(--ink-900);
  border-top:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  padding:56px 0;
  color:#fff;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-text h2{font-size:26px;font-weight:700;line-height:1.4;}
.cta-text p{margin-top:10px;font-size:15.5px;color:rgba(255,255,255,.74);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-top:72px;
  padding-bottom:56px;
}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);}
.site-footer h4{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
}
.footer-links{display:grid;gap:12px;}
.footer-links a{
  display:inline-block;
  font-size:14px;
  color:rgba(255,255,255,.7);
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  background:#0F0C24;
  padding:20px 0;
  font-size:12.5px;
}
.footer-bottom .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .nav-toggle{display:flex;}
  .header-actions .btn-primary{display:none;}
  .main-nav{
    position:fixed;
    inset:72px 0 0 0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:20px 24px 32px;
    background:var(--ink-900);
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
    overflow-y:auto;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;}
  .nav-link{
    height:52px;
    padding:0 6px;
    font-size:16px;
    color:rgba(255,255,255,.85);
    border-bottom:1px solid rgba(255,255,255,.1);
    border-radius:0;
  }
  .nav-link.active{color:var(--brand);}
  .nav-link.active::after{left:0;right:auto;width:28px;bottom:8px;}
  .main-nav .mobile-only{
    display:inline-flex;
    margin-top:24px;
    color:#fff;
  }
  body.nav-open{overflow:hidden;}
  .nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle.is-open span:nth-child(2){opacity:0;}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  .intro-grid,.split,.split.reverse{grid-template-columns:1fr;gap:36px;}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .point-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;padding-top:56px;}
}
@media (max-width:768px){
  .banner-inner h1{font-size:30px;}
  .section{padding:60px 0;}
  h2.section-title{font-size:24px;}
  .banner-sub{font-size:16.5px;}
  .device-grid{grid-template-columns:1fr;}
  .cta-text h2{font-size:22px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .page-banner{padding:132px 0 56px;}
  .banner-inner h1{font-size:26px;}
  .section{padding:56px 0;}
  .stat-strip{grid-template-columns:1fr;padding:24px;}
  .stat-item{border-left:0;padding-left:0;border-top:2px solid var(--line);padding-top:16px;}
  .stat-item:first-child{border-top-color:var(--brand);}
  .device-card{padding:22px;}
  .cta-inner{flex-direction:column;align-items:stretch;}
  .cta-inner .btn{width:100%;}
  .faq-q{font-size:16px;padding:18px 2px;}
  .faq-a p{padding:0 28px 20px 2px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom .container{flex-direction:column;align-items:flex-start;}
}