/* roulang page: index */
:root{
  --brand:#6C3BF4;
  --brand-2:#21C8A6;
  --accent:#FF7A45;
  --ink:#1B1730;
  --ink-soft:#5D5773;
  --bg:#F6F4FB;
  --bg-alt:#EFEBFA;
  --surface:#FFFFFF;
  --line:#E7E2F2;
  --deep:#221A33;
  --radius-card:20px;
  --radius-btn:12px;
  --shadow-1:0 8px 24px rgba(34,26,51,.08);
  --shadow-2:0 18px 44px rgba(34,26,51,.14);
  --container:1160px;
  --grad:linear-gradient(135deg,#6C3BF4 0%,#21C8A6 100%);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,form{margin:0}
ul,ol{padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 侧边导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:248px;z-index:80;
  background:var(--deep);display:flex;flex-direction:column;
  padding:22px 16px 20px;overflow-y:auto;
  transition:transform .3s var(--ease);
}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:4px 8px 22px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:18px}
.brand-mark{width:36px;height:36px;flex:0 0 auto;border-radius:11px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:16px;font-weight:700}
.brand-name{color:#fff;font-size:15px;font-weight:600;line-height:1.35}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1 1 auto}
.nav-link{
  position:relative;display:flex;align-items:center;gap:11px;
  min-height:44px;padding:11px 12px;border-radius:10px;
  color:rgba(255,255,255,.68);font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-link i{width:18px;text-align:center;font-size:15px}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-link.active{background:rgba(255,255,255,.1);color:#fff}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.sidebar-foot{margin-top:20px;padding:16px;border-radius:16px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08)}
.sidebar-foot p{font-size:13px;line-height:1.65;color:rgba(255,255,255,.62);margin-bottom:12px}
.sidebar-foot .btn{width:100%}
.app-mask{
  position:fixed;inset:0;z-index:75;background:rgba(27,23,48,.48);
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.app-mask.show{opacity:1;visibility:visible}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  background:#fff;border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;gap:12px;
}
.hamburger{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  display:grid;place-items:center;font-size:17px;color:var(--ink);cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.hamburger:hover{border-color:var(--brand);color:var(--brand)}
.topbar-brand{font-size:15px;font-weight:600;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px;border-radius:10px}

/* ---------- 主体 ---------- */
.app-main{margin-left:248px;min-height:100vh;display:flex;flex-direction:column}
main{flex:1 1 auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;min-height:46px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:linear-gradient(135deg,#6C3BF4,#21C8A6);color:#fff;box-shadow:0 10px 24px rgba(108,59,244,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(108,59,244,.36);color:#fff}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(108,59,244,.3)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--brand)}
.btn-outline:hover{border-color:var(--brand);background:#fff;transform:translateY(-2px);box-shadow:var(--shadow-1)}
.btn-block{width:100%}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:.06em;color:var(--brand);background:rgba(108,59,244,.09);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.eyebrow-light{color:#C6B6FF;background:rgba(255,255,255,.1)}
h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.005em}
h3{font-size:21px;line-height:1.5;font-weight:600}
.section-sub{color:var(--ink-soft);font-size:16px;margin-top:14px}
.section-head h2{margin-top:0}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;padding:96px 0 88px;
  background:
    radial-gradient(980px 520px at 84% -12%, rgba(33,200,166,.40), transparent 62%),
    radial-gradient(820px 500px at 4% 112%, rgba(108,59,244,.62), transparent 62%),
    var(--deep);
  border-radius:0 0 32px 32px;
}
.hero-photo{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.16;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{color:#fff;margin-bottom:18px}
.hero-sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.76);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14)}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72)}
.trust-row li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:28px;box-shadow:var(--shadow-2);
  border:1px solid rgba(255,255,255,.16);
}
.hero-visual::after{
  content:"";position:absolute;right:-14px;bottom:-14px;width:120px;height:120px;
  border-radius:24px;border:1px solid rgba(255,255,255,.2);z-index:-1;
}

/* ---------- 数据徽章条 ---------- */
.stats-strip{margin-top:-46px;position:relative;z-index:5}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-badge{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-1);padding:22px 20px;position:relative;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.stat-badge:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.stat-badge::after{content:"";position:absolute;top:22px;right:20px;width:8px;height:8px;border-radius:50%;background:var(--accent);opacity:.85}
.stat-num{
  display:block;font-size:32px;font-weight:700;line-height:1.15;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.stat-label{display:block;font-size:13px;color:var(--ink-soft);margin-top:6px}

/* ---------- 功能卡（非对称 2+1） ---------- */
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.feature-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:32px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
  display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.feature-card-lg{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1.05fr;gap:32px;padding:0;overflow:hidden}
.feature-cover{height:100%}
.feature-cover img{width:100%;height:100%;min-height:300px;object-fit:cover;border-radius:0}
.feature-card-lg .feature-body{padding:36px 36px 36px 0}
.icon-badge{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  font-size:19px;color:var(--brand);background:rgba(108,59,244,.1);
  margin-bottom:18px;transition:background .25s var(--ease),color .25s var(--ease);
}
.feature-card:hover .icon-badge{background:var(--grad);color:#fff}
.feature-card h3{margin-bottom:10px}
.feature-card p{color:var(--ink-soft);font-size:15px}
.dot-list{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.dot-list li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-soft)}
.dot-list li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.link-arrow{
  display:inline-flex;align-items:center;gap:7px;margin-top:22px;
  font-size:15px;font-weight:600;color:var(--brand);position:relative;
}
.link-arrow i{transition:transform .22s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}
.link-arrow::after{content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--grad);transition:width .25s var(--ease)}
.link-arrow:hover::after{width:100%}

/* ---------- 深色优势区 ---------- */
.dark-panel{
  position:relative;background:var(--deep);border-radius:28px;padding:64px;
  color:#fff;overflow:hidden;
  background-image:radial-gradient(720px 380px at 88% 0%, rgba(33,200,166,.24), transparent 62%),
                   radial-gradient(620px 380px at 0% 100%, rgba(108,59,244,.34), transparent 60%);
}
.dark-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.dark-grid h2{color:#fff;margin-bottom:16px}
.dark-grid p{color:rgba(255,255,255,.72);font-size:16px;margin-bottom:28px}
.dark-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.dark-stat{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);
  border-radius:16px;padding:22px 20px;transition:background .22s var(--ease),transform .22s var(--ease);
}
.dark-stat:hover{background:rgba(255,255,255,.12);transform:translateY(-3px)}
.dark-stat .num{display:block;font-size:30px;font-weight:700;line-height:1.15;
  background:linear-gradient(135deg,#A98BFF,#4BE3C2);-webkit-background-clip:text;background-clip:text;color:transparent}
.dark-stat .label{display:block;font-size:13px;color:rgba(255,255,255,.66);margin-top:6px}
.grad-line{height:2px;border-radius:2px;background:linear-gradient(90deg,transparent,var(--brand),var(--brand-2),transparent);margin-top:48px;opacity:.7}

/* ---------- 场景卡 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
  display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.case-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.case-body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto}
.tag{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:999px;background:rgba(108,59,244,.1);color:var(--brand);
  align-self:flex-start;
}
.tag-hot{background:rgba(255,122,69,.14);color:#E05A25}
.case-body h3{font-size:18px;margin:14px 0 10px}
.case-body p{font-size:15px;color:var(--ink-soft);flex:1 1 auto}
.case-metric{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:15px;font-weight:600;color:var(--brand);
}
.case-metric span{font-size:22px;font-weight:700;margin-right:6px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 方案区（图文交错） ---------- */
.plan-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0;border-bottom:1px solid var(--line)}
.plan-row:last-child{border-bottom:0}
.plan-row.reverse .plan-media{order:2}
.plan-row.reverse .plan-text{order:1}
.plan-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:24px;box-shadow:var(--shadow-1)}
.plan-num{
  display:inline-block;font-size:34px;font-weight:700;line-height:1;margin-bottom:14px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.plan-text h3{margin-bottom:12px}
.plan-text p{color:var(--ink-soft);font-size:15px}
.plan-text .dot-list{margin-top:18px}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:26px;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.news-title{
  font-size:17px;font-weight:600;line-height:1.55;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:var(--brand)}
.news-desc{
  font-size:14px;color:var(--ink-soft);line-height:1.7;flex:1 1 auto;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.news-meta time{font-size:13px;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.news-empty{
  grid-column:1 / -1;text-align:center;padding:56px 24px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card);
}
.news-empty p{color:var(--ink-soft);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-accordion{border:0;background:transparent}
.faq-accordion .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;box-shadow:var(--shadow-1);overflow:hidden;
  transition:box-shadow .22s var(--ease);
}
.faq-accordion .accordion-item.is-active{box-shadow:var(--shadow-2)}
.faq-accordion .accordion-title{
  position:relative;display:block;border:0;background:transparent;
  padding:20px 56px 20px 22px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:14px;color:var(--brand);transition:transform .25s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{content:"\f068"}
.faq-accordion .accordion-title:hover{color:var(--brand)}
.faq-accordion .accordion-title::after{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:var(--grad);opacity:0;transition:opacity .25s var(--ease);transform:translateX(-1px);
}
.faq-accordion .accordion-item.is-active .accordion-title::after{opacity:1;transform:translateX(0)}
.faq-accordion .accordion-content{
  border:0;background:transparent;padding:0 56px 22px 22px;color:var(--ink-soft);font-size:15px;line-height:1.8;
}

/* ---------- 联系区 ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:start}
.contact-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:36px;
}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);background:#F8F7FC;border-radius:var(--radius-btn);
  padding:13px 16px;font-size:15px;transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.field input{height:48px}
.field textarea{resize:vertical;min-height:120px;line-height:1.7}
.field input:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:transparent;
  box-shadow:0 0 0 1px var(--brand),0 0 0 3px rgba(108,59,244,.12);
}
.field input::placeholder,.field textarea::placeholder{color:#A29BB8}
.info-list{display:flex;flex-direction:column;gap:20px}
.info-item{display:flex;gap:14px;align-items:flex-start}
.info-item i{
  width:42px;height:42px;flex:0 0 auto;border-radius:12px;display:grid;place-items:center;
  background:rgba(108,59,244,.1);color:var(--brand);font-size:16px;
}
.info-item strong{display:block;font-size:15px;margin-bottom:2px}
.info-item span{font-size:14px;color:var(--ink-soft);line-height:1.7}

/* ---------- CTA 横幅 ---------- */
.cta-banner{
  background:var(--deep);border-radius:28px;padding:56px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  background-image:radial-gradient(680px 340px at 82% 0%, rgba(33,200,166,.28), transparent 62%),
                   radial-gradient(520px 320px at 4% 100%, rgba(108,59,244,.36), transparent 62%);
}
.cta-banner h2{color:#fff;font-size:26px;margin-bottom:10px}
.cta-banner p{color:rgba(255,255,255,.72);font-size:15px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);margin-top:0;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-name{font-size:16px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col li{font-size:14px;line-height:1.7}
.footer-col a{transition:color .2s var(--ease)}
.footer-col a:hover{color:#4BE3C2}
.footer-about{font-size:14px;line-height:1.8;max-width:340px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;font-size:13px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#4BE3C2}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px}
  .hero-grid{gap:44px}
  .dark-panel{padding:52px}
}
@media (max-width:1023px){
  .sidebar{transform:translateX(-100%);box-shadow:var(--shadow-2)}
  .sidebar.open{transform:translateX(0)}
  .topbar{display:flex}
  .app-main{margin-left:0;padding-top:64px}
  .container{padding:0 24px}
  .hero{border-radius:0 0 24px 24px;padding:64px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:-1}
  h1{font-size:32px}
  h2{font-size:26px}
  .feature-grid{grid-template-columns:1fr}
  .feature-card-lg{grid-template-columns:1fr;padding:0}
  .feature-card-lg .feature-body{padding:0 28px 32px}
  .feature-cover img{min-height:220px}
  .dark-grid{grid-template-columns:1fr;gap:36px}
  .dark-panel{padding:40px}
  .case-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .plan-row{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .plan-row.reverse .plan-media{order:0}
  .plan-row.reverse .plan-text{order:1}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .stats-strip{margin-top:-32px}
}
@media (max-width:767px){
  .section{padding:52px 0}
  .container{padding:0 20px}
  h1{font-size:28px}
  h2{font-size:23px}
  h3{font-size:19px}
  .hero{padding:44px 0 56px}
  .hero-sub{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
  .stat-badge{padding:18px 16px}
  .stat-num{font-size:26px}
  .feature-card{padding:24px}
  .feature-card-lg{padding:0}
  .feature-card-lg .feature-body{padding:0 22px 26px}
  .dark-panel{padding:30px 22px;border-radius:22px}
  .dark-stats{grid-template-columns:1fr 1fr;gap:12px}
  .case-grid{grid-template-columns:1fr;gap:18px}
  .news-grid{grid-template-columns:1fr}
  .cta-banner{padding:34px 22px;border-radius:22px;flex-direction:column;align-items:flex-start}
  .contact-card{padding:24px}
  .faq-accordion .accordion-title{padding:18px 48px 18px 18px;font-size:16px}
  .faq-accordion .accordion-title::before{right:18px}
  .faq-accordion .accordion-content{padding:0 18px 20px 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .news-head{align-items:flex-start}
}
@media (max-width:400px){
  .stats-grid{grid-template-columns:1fr}
  .dark-stats{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --brand:#6C3BF4;
  --brand-2:#21C8A6;
  --accent:#FF7A45;
  --ink:#1B1730;
  --ink-soft:#5D5773;
  --bg:#F6F4FB;
  --surface:#FFFFFF;
  --alt:#EFEBFA;
  --dark:#221A33;
  --line:#E7E2F2;
  --radius-card:20px;
  --radius-btn:12px;
  --radius-hero:28px;
  --shadow-1:0 8px 24px rgba(34,26,51,.08);
  --shadow-2:0 18px 44px rgba(34,26,51,.14);
  --container:1160px;
  --nav-w:248px;
  --grad:linear-gradient(135deg,#6C3BF4 0%,#21C8A6 100%);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-2)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:99;background:var(--surface);
  padding:10px 18px;border-radius:0 0 12px 0;box-shadow:var(--shadow-1)
}
.skip-link:focus{left:0;color:var(--brand)}
.container{
  width:100%;max-width:var(--container);
  margin:0 auto;padding:0 40px;
}
.num{font-variant-numeric:tabular-nums}
.grad-text{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}

/* ============ 左侧 App Shell ============ */
.app-sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:var(--dark);
  display:flex;flex-direction:column;
  padding:26px 18px 22px;
  z-index:60;
  border-right:1px solid rgba(255,255,255,.06);
}
.brand{display:flex;align-items:center;gap:12px;padding:0 6px 22px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-mark{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;
  background:var(--grad);color:#fff;font-size:18px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px rgba(108,59,244,.38)
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{color:#fff;font-size:15px;letter-spacing:.4px}
.brand-text em{font-style:normal;font-size:12px;color:rgba(255,255,255,.5);margin-top:3px}
.side-nav{display:flex;flex-direction:column;gap:4px;padding:20px 0;flex:1 1 auto;overflow-y:auto}
.side-nav .nav-link{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:44px;padding:11px 14px;border-radius:12px;
  color:rgba(255,255,255,.72);font-size:15px;font-weight:500;
  transition:background .2s var(--ease),color .2s var(--ease)
}
.side-nav .nav-link i{width:18px;text-align:center;font-size:15px;color:rgba(255,255,255,.48);transition:color .2s var(--ease)}
.side-nav .nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.side-nav .nav-link:hover i{color:var(--brand-2)}
.side-nav .nav-link.active{background:rgba(255,255,255,.09);color:#fff;font-weight:600}
.side-nav .nav-link.active i{color:var(--brand-2)}
.side-nav .nav-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 4px 4px 0;background:var(--grad)
}
.side-foot{padding-top:16px;border-top:1px solid rgba(255,255,255,.08)}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;border-radius:var(--radius-btn);
  background:var(--grad);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 10px 24px rgba(108,59,244,.32);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease)
}
.side-cta:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(108,59,244,.42)}
.side-cta:active{transform:translateY(0)}

/* ============ 移动端顶栏 + 抽屉 ============ */
.topbar-mobile{
  display:none;position:fixed;left:0;right:0;top:0;height:64px;z-index:70;
  background:var(--surface);border-bottom:1px solid var(--line);
  align-items:center;gap:10px;padding:0 14px;
}
.hamburger{
  width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:var(--surface);color:var(--ink);font-size:17px;
  display:flex;align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),color .2s var(--ease)
}
.hamburger:hover{border-color:var(--brand);color:var(--brand)}
.topbar-brand{
  display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;color:var(--ink);
  margin-right:auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis
}
.topbar-brand .brand-mark{width:30px;height:30px;border-radius:9px;font-size:15px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,23,48,.48);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease)
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;left:0;top:0;bottom:0;width:280px;z-index:90;
  background:var(--dark);padding:24px 18px;
  display:flex;flex-direction:column;
  transform:translateX(-102%);transition:transform .28s var(--ease)
}
.drawer.is-open{transform:translateX(0)}
.drawer .brand{padding-bottom:18px}

/* ============ 主区域 ============ */
.app-main{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.app-main main{flex:1 1 auto}
section[id],div[id]{scroll-margin-top:84px}

/* ============ 文章头部 ============ */
.article-hero{
  background:
    radial-gradient(900px 320px at 88% -10%,rgba(33,200,166,.16),transparent 62%),
    radial-gradient(700px 300px at 6% 0%,rgba(108,59,244,.18),transparent 60%),
    var(--bg);
  padding:42px 0 8px;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-soft)}
.crumbs a{color:var(--ink-soft);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.crumbs a:hover{color:var(--brand);border-color:var(--brand)}
.crumbs .sep{color:#B9B2CE}
.crumbs .current{color:var(--ink);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:520px}
.article-head{padding:22px 0 0;max-width:900px}
.cat-tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--brand);background:rgba(108,59,244,.1);border:1px solid rgba(108,59,244,.16)
}
.cat-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.article-head h1{
  font-size:36px;line-height:1.3;margin:16px 0 0;letter-spacing:.3px;
  max-width:900px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:18px;font-size:14px;color:var(--ink-soft)
}
.meta-row i{margin-right:6px;color:var(--brand-2)}
.meta-row .vr{width:1px;height:14px;background:var(--line)}

/* ============ 封面 ============ */
.cover-wrap{padding:26px 0 0}
.cover-figure{
  margin:0;border-radius:24px;overflow:hidden;
  box-shadow:var(--shadow-1);background:var(--alt);
  aspect-ratio:16/9;
}
.cover-figure img{width:100%;height:100%;object-fit:cover}

/* ============ 文章布局 ============ */
.article-section{padding:44px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.article-body{
  max-width:800px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:40px 44px;box-shadow:var(--shadow-1);
  font-size:16px;line-height:1.85;color:var(--ink);
  overflow-wrap:break-word;
}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  position:relative;font-size:24px;line-height:1.45;
  margin:2em 0 .8em;padding-left:14px
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:4px;background:var(--grad)
}
.article-body h3{font-size:19px;line-height:1.5;margin:1.7em 0 .6em;color:var(--ink)}
.article-body h4{font-size:17px;margin:1.4em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em}
.article-body ul li{list-style:none;position:relative;margin-bottom:.55em;line-height:1.8}
.article-body ul li::before{
  content:"";position:absolute;left:-1.1em;top:.72em;width:6px;height:6px;
  border-radius:50%;background:var(--grad)
}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:.55em;line-height:1.8}
.article-body ol li::marker{color:var(--brand);font-weight:700}
.article-body blockquote{
  margin:1.5em 0;padding:18px 24px;background:var(--alt);
  border-left:4px solid var(--brand-2);border-radius:0 16px 16px 0;
  color:var(--ink-soft)
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body figure{margin:1.6em 0}
.article-body img{border-radius:16px;margin:0 auto}
.article-body figcaption,
.article-body .caption{
  margin-top:10px;font-size:13.5px;color:var(--ink-soft);text-align:center
}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(108,59,244,.35)}
.article-body a:hover{color:var(--brand-2);border-color:var(--brand-2)}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}
.article-body strong{color:var(--ink);font-weight:700}
.article-body code{
  background:var(--alt);color:var(--brand);padding:2px 7px;border-radius:6px;font-size:14px
}
.article-body pre{
  background:var(--dark);color:#EDE9F7;padding:18px 20px;border-radius:16px;
  overflow-x:auto;font-size:14px;line-height:1.7
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;
  margin:1.6em 0;font-size:15px;border:1px solid var(--line);border-radius:16px;overflow:hidden
}
.article-body thead th{
  background:var(--alt);color:var(--ink);font-weight:600;text-align:left
}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line)}
.article-body tbody tr:last-child td{border-bottom:0}

/* 空态 */
.empty-state{
  text-align:center;padding:40px 10px;border-radius:16px;background:var(--alt)
}
.empty-state h2{font-size:22px;padding:0}
.empty-state h2::before{display:none}
.empty-state p{color:var(--ink-soft);margin:12px auto 22px;max-width:520px}

/* 文末 */
.article-tags{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  margin-top:36px;padding-top:26px;border-top:1px solid var(--line)
}
.article-tags .label{font-size:14px;color:var(--ink-soft);margin-right:4px}
.tag{
  display:inline-block;padding:5px 13px;border-radius:999px;font-size:13px;
  color:var(--ink);background:var(--alt);border:1px solid var(--line);
  transition:color .2s var(--ease),background .2s var(--ease)
}
.tag:hover{color:#fff;background:var(--brand);border-color:var(--brand)}
.article-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
  cursor:pointer;white-space:nowrap
}
.btn-primary{
  background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(108,59,244,.28)
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(108,59,244,.38)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(108,59,244,.3)}
.btn-ghost{
  background:transparent;color:var(--brand);border-color:rgba(108,59,244,.36)
}
.btn-ghost:hover{color:var(--brand-2);border-color:var(--brand-2);transform:translateY(-2px);background:rgba(33,200,166,.06)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 24px rgba(255,122,69,.3)}
.btn-accent:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,122,69,.4)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px}

/* ============ 右栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:26px}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1)
}
.side-card h3{
  font-size:16px;display:flex;align-items:center;gap:9px;padding-bottom:14px;
  border-bottom:1px solid var(--line)
}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:4px;background:var(--grad)}
.side-list{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.side-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-soft);line-height:1.7}
.side-list li i{color:var(--brand-2);margin-top:5px;font-size:12px}
.hot-list{margin-top:8px;display:flex;flex-direction:column}
.hot-list li{padding:12px 0;border-bottom:1px dashed var(--line)}
.hot-list li:last-child{border-bottom:0;padding-bottom:0}
.hot-list a{display:flex;gap:10px;font-size:14.5px;color:var(--ink);line-height:1.6}
.hot-list a:hover{color:var(--brand)}
.hot-list .rank{
  flex:0 0 auto;width:22px;height:22px;border-radius:7px;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  background:rgba(108,59,244,.12);color:var(--brand)
}
.hot-list li:nth-child(1) .rank{background:var(--grad);color:#fff}
.hot-list li:nth-child(2) .rank{background:rgba(255,122,69,.16);color:var(--accent)}

/* ============ 板块通用 ============ */
.section{padding:88px 0}
.section-alt{background:var(--alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.section-head h2{font-size:30px;line-height:1.35}
.section-head p{margin-top:10px;color:var(--ink-soft);font-size:15px;max-width:620px}
.section-head .more{
  font-size:15px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:6px;
  border-bottom:2px solid transparent;transition:border-color .22s var(--ease),color .22s var(--ease)
}
.section-head .more:hover{color:var(--brand-2);border-color:var(--brand-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);letter-spacing:1.4px;text-transform:uppercase;margin-bottom:12px
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad)}

/* ============ 资讯卡片 ============ */
.related-cards{margin-top:0}
.info-card{
  height:100%;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease)
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.info-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--alt)}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.info-card:hover .thumb img{transform:scale(1.05)}
.info-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.info-card .chip{
  display:inline-block;align-self:flex-start;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--brand);background:rgba(108,59,244,.1);margin-bottom:12px
}
.info-card h3{
  font-size:17px;line-height:1.55;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.info-card h3 a{color:var(--ink)}
.info-card h3 a:hover{color:var(--brand)}
.info-card .desc{
  font-size:14px;color:var(--ink-soft);line-height:1.75;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.info-card .foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:12px;font-size:13px;color:var(--ink-soft);padding-top:14px;border-top:1px solid var(--line)
}
.info-card .foot .go{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:5px}
.info-card .foot .go:hover{color:var(--brand-2);gap:9px}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;box-shadow:var(--shadow-1);overflow:hidden;
  transition:box-shadow .22s var(--ease)
}
.faq-item:hover{box-shadow:var(--shadow-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;text-align:left;padding:20px 22px 20px 24px;
  font-size:17px;font-weight:600;color:var(--ink);position:relative
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 4px 4px 0;
  background:var(--grad);opacity:0;transition:opacity .2s var(--ease)
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-q i{color:var(--brand);font-size:15px;transition:transform .25s var(--ease);flex:0 0 auto}
.faq-item.is-open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
.faq-a .inner{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-soft)}
.faq-item.is-open .faq-a{max-height:340px}

/* ============ CTA ============ */
.cta-section{padding:0 0 88px}
.cta-banner{
  position:relative;overflow:hidden;border-radius:var(--radius-hero);
  background:var(--dark);color:#fff;padding:56px 52px;
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.9fr);
  gap:40px;align-items:center;
  box-shadow:var(--shadow-2)
}
.cta-banner::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:var(--grad);opacity:.28;filter:blur(10px);pointer-events:none
}
.cta-banner h2{color:#fff;font-size:30px;line-height:1.35;position:relative;z-index:1}
.cta-banner p{color:rgba(255,255,255,.72);margin-top:14px;font-size:15.5px;line-height:1.85;position:relative;z-index:1;max-width:560px}
.cta-banner .actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;position:relative;z-index:1}
.cta-banner .btn-ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.cta-banner .btn-ghost:hover{color:#fff;border-color:var(--brand-2);background:rgba(255,255,255,.08)}
.cta-points{position:relative;z-index:1;display:grid;gap:12px}
.cta-points li{
  display:flex;align-items:center;gap:12px;font-size:15px;color:rgba(255,255,255,.86);
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);
  border-radius:14px;padding:14px 16px
}
.cta-points li i{color:var(--brand-2)}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:66px 0 26px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:38px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:16px}
.footer-brand .brand-name{color:#fff;font-size:16px;font-weight:700}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:360px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li{font-size:14px;color:rgba(255,255,255,.62)}
.footer-col a{color:rgba(255,255,255,.62);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand-2)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5)
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--brand-2)}

/* ============ 响应式 ============ */
@media screen and (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 320px}
}
@media screen and (max-width:1023px){
  .app-sidebar{display:none}
  .topbar-mobile{display:flex}
  .app-main{margin-left:0;padding-top:64px}
  .container{padding:0 24px}
  .article-hero{padding:30px 0 4px}
  .article-head h1{font-size:30px}
  .article-body{padding:32px 28px}
  .section{padding:64px 0}
  .cta-section{padding:0 0 64px}
  .cta-banner{grid-template-columns:1fr;padding:42px 34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media screen and (max-width:767px){
  .container{padding:0 20px}
  .article-head h1{font-size:26px;line-height:1.35}
  .article-body{padding:26px 20px;border-radius:16px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .meta-row{gap:10px;font-size:13px}
  .meta-row .vr{display:none}
  .crumbs .current{max-width:100%}
  .cover-figure{border-radius:18px;aspect-ratio:16/10}
  .section{padding:52px 0}
  .section-head h2{font-size:24px}
  .cta-banner{padding:32px 22px;border-radius:22px}
  .cta-banner h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .article-side{flex-direction:column}
}
@media screen and (max-width:519px){
  .article-head h1{font-size:23px}
  .btn{width:100%}
  .article-actions{flex-direction:column}
  .cta-banner .actions .btn{width:100%}
  .topbar-brand{font-size:14px}
  .topbar-brand .brand-mark{width:26px;height:26px;font-size:13px}
}

/* roulang page: category1 */
:root{
  --brand:#6C3BF4;
  --brand-2:#21C8A6;
  --brand-deep:#221A33;
  --accent:#FF7A45;
  --ink:#1B1730;
  --ink-soft:#5D5773;
  --bg:#F6F4FB;
  --soft:#EFEBFA;
  --surface:#FFFFFF;
  --line:#E7E2F2;
  --radius-card:20px;
  --radius-lg:28px;
  --radius-btn:12px;
  --shadow-1:0 8px 24px rgba(34,26,51,.08);
  --shadow-2:0 18px 44px rgba(34,26,51,.14);
  --container:1160px;
  --grad:linear-gradient(135deg,#6C3BF4 0%,#21C8A6 100%);
  --grad-soft:linear-gradient(135deg,#9E7BFF 0%,#4BE0C0 100%);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-2)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(108,59,244,.18)}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}

/* ============ 左侧导航 ============ */
.app-sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:248px;
  background:var(--brand-deep);
  z-index:80;
  border-right:1px solid rgba(255,255,255,.06);
}
.sidebar-inner{
  height:100%;
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  overflow-y:auto;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 8px 22px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-mark{
  flex:0 0 auto;
  width:40px;height:40px;
  border-radius:12px;
  background:var(--grad);
  color:#fff;
  font-size:19px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 18px rgba(108,59,244,.4);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand-text strong{color:#fff;font-size:15px;font-weight:600;letter-spacing:.2px;white-space:nowrap}
.brand-text em{font-style:normal;font-size:12px;color:rgba(255,255,255,.5)}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:22px;flex:1 1 auto}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  min-height:44px;
  padding:10px 14px;
  border-radius:10px;
  color:rgba(255,255,255,.72);
  font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-link i{width:18px;text-align:center;font-size:15px;opacity:.86}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-link.active{background:rgba(255,255,255,.09);color:#fff;font-weight:600}
.nav-link.active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--grad);
}
.sidebar-cta{
  margin-top:18px;
  width:100%;
  justify-content:center;
}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(27,23,48,.48);
  opacity:0;
  pointer-events:none;
  transition:opacity .28s var(--ease);
  z-index:70;
}
.drawer-mask.show{opacity:1;pointer-events:auto}

/* ============ 主区域 ============ */
.app-main{
  margin-left:248px;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:60;
  height:64px;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:0 16px;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.topbar-toggle{
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  color:var(--ink);
  font-size:17px;
  cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.topbar-toggle:hover{background:var(--soft);border-color:#d9d2ee}
.topbar-brand{
  font-size:16px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.2px;
}
.topbar-brand:hover{color:var(--brand)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 24px;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:16px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  background:var(--grad);
  color:#fff;
  box-shadow:0 10px 24px rgba(108,59,244,.26);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(108,59,244,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(108,59,244,.24)}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border-color:rgba(108,59,244,.35);
}
.btn-ghost:hover{background:rgba(108,59,244,.08);color:var(--brand);border-color:var(--brand)}
.btn-ghost-light{
  background:rgba(255,255,255,.08);
  color:#fff;
  border-color:rgba(255,255,255,.35);
}
.btn-ghost-light:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.6)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  padding-bottom:2px;
  border-bottom:2px solid transparent;
  transition:border-color .2s var(--ease),color .2s var(--ease),gap .2s var(--ease);
}
.link-arrow i{font-size:13px;transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--brand-2);border-color:var(--brand-2)}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--ink-soft);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--ink-soft)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#b8b0d0}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:52px 0 72px;
  background:
    radial-gradient(720px 360px at 88% -10%,rgba(33,200,166,.16),transparent 62%),
    radial-gradient(640px 380px at 4% 8%,rgba(108,59,244,.14),transparent 60%),
    var(--bg);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-120px;bottom:-160px;
  width:420px;height:420px;
  border-radius:50%;
  background:var(--grad);
  opacity:.07;
  pointer-events:none;
}
.hero-grid{align-items:center}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 16px;
  border-radius:999px;
  background:rgba(108,59,244,.1);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  letter-spacing:.3px;
}
.pill::before{
  content:"";
  width:7px;height:7px;
  border-radius:50%;
  background:var(--accent);
}
.page-hero h1{
  font-size:40px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.2px;
  margin:20px 0 18px;
}
.hero-lead{
  font-size:17px;
  line-height:1.8;
  color:var(--ink-soft);
  max-width:560px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  margin-top:30px;
  font-size:14px;
  color:var(--ink-soft);
}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points i{color:var(--brand-2);font-size:14px}
.hero-visual{position:relative}
.hero-frame{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--surface);
  box-shadow:var(--shadow-2);
  border:1px solid rgba(255,255,255,.7);
}
.hero-frame img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.hero-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(34,26,51,0) 55%,rgba(34,26,51,.5) 100%);
}
.hero-badge{
  position:absolute;
  left:22px;bottom:22px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:10px 16px;
  border-radius:999px;
  background:rgba(255,255,255,.94);
  box-shadow:var(--shadow-1);
  font-size:13.5px;
  font-weight:600;
  color:var(--ink);
}
.hero-badge i{color:var(--brand)}

/* ============ 板块 ============ */
.section{padding:88px 0}
.section--soft{background:var(--soft)}
.section--tight{padding-top:0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:44px;
}
.section-head.center{
  flex-direction:column;
  align-items:center;
  text-align:center;
}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:2px;
  color:var(--brand);
  margin-bottom:12px;
}
.section-title{
  font-size:30px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.2px;
}
.section-sub{
  margin-top:14px;
  font-size:16px;
  color:var(--ink-soft);
  max-width:640px;
}

/* ============ 图文交错编号 ============ */
.step-row{
  align-items:center;
  margin-bottom:72px;
}
.step-row:last-child{margin-bottom:0}
.step-copy{padding-right:16px}
.step-num{
  display:inline-block;
  font-size:15px;
  font-weight:700;
  letter-spacing:1px;
  color:var(--brand);
  padding:5px 14px;
  border-radius:999px;
  background:rgba(108,59,244,.09);
  font-variant-numeric:tabular-nums;
}
.step-copy h3{
  font-size:24px;
  font-weight:700;
  line-height:1.4;
  margin:18px 0 14px;
}
.step-copy p{
  color:var(--ink-soft);
  margin-bottom:20px;
  max-width:520px;
}
.step-media{
  position:relative;
}
.step-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  border:1px solid rgba(255,255,255,.8);
}
.step-media::before{
  content:"";
  position:absolute;
  right:-14px;top:-14px;
  width:96px;height:96px;
  border-radius:22px;
  background:var(--grad);
  opacity:.14;
  z-index:-1;
}

/* ============ 数据徽章带 ============ */
.stats-section{padding:0 0 88px}
.stats-band{
  position:relative;
  background:var(--brand-deep);
  border-radius:var(--radius-lg);
  padding:52px 48px 48px;
  overflow:hidden;
  color:#fff;
}
.stats-band::before{
  content:"";
  position:absolute;
  right:-90px;top:-90px;
  width:320px;height:320px;
  border-radius:50%;
  background:var(--grad);
  opacity:.22;
}
.stats-band::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:3px;
  background:var(--grad);
  opacity:.9;
}
.stats-head{position:relative;z-index:1;margin-bottom:34px}
.stats-head h2{font-size:26px;font-weight:700;line-height:1.4}
.stats-head p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);max-width:560px}
.stats-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.stat-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:16px;
  padding:22px 20px;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.stat-card:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.stat-num{
  display:block;
  font-size:30px;
  font-weight:700;
  line-height:1.2;
  font-variant-numeric:tabular-nums;
  background:var(--grad-soft);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-label{
  display:block;
  margin-top:10px;
  font-size:13.5px;
  color:rgba(255,255,255,.72);
  line-height:1.6;
}

/* ============ 场景卡 ============ */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.scene-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:32px 28px;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(108,59,244,.3)}
.scene-icon{
  width:52px;height:52px;
  border-radius:15px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  color:#fff;
  background:var(--grad);
  box-shadow:0 10px 22px rgba(108,59,244,.24);
  transition:transform .22s var(--ease);
}
.scene-card:hover .scene-icon{transform:translateY(-2px) scale(1.04)}
.scene-card h3{font-size:19px;font-weight:700;margin:20px 0 10px}
.scene-card p{font-size:15px;color:var(--ink-soft);line-height:1.75}

/* ============ 流程 ============ */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
  counter-reset:flow;
}
.flow-step{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 26px;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.flow-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:12px;
  background:rgba(108,59,244,.1);
  color:var(--brand);
  font-weight:700;
  font-size:15px;
  font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.flow-step h3{font-size:18px;font-weight:700;margin-bottom:10px}
.flow-step p{font-size:14.5px;color:var(--ink-soft);line-height:1.75}

/* ============ 最新信息 ============ */
.news-list{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.news-item{
  display:grid;
  grid-template-columns:120px 88px 1fr;
  gap:18px;
  align-items:center;
  padding:22px 28px;
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.news-item:last-child{border-bottom:0}
.news-item:hover{background:#faf9fe}
.news-date{
  font-size:14px;
  color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
  letter-spacing:.3px;
}
.news-tag{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:4px 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  color:var(--brand);
  background:rgba(108,59,244,.1);
}
.news-item p{font-size:15px;color:var(--ink);line-height:1.7}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:rgba(108,59,244,.3)}
.faq-item.open{box-shadow:var(--shadow-1);border-color:rgba(108,59,244,.35)}
.faq-item.open::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--grad);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 26px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  min-height:44px;
}
.faq-q span{flex:1 1 auto}
.faq-q i{
  flex:0 0 auto;
  color:var(--brand);
  font-size:14px;
  transition:transform .24s var(--ease);
}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-panel{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .28s var(--ease);
}
.faq-item.open .faq-panel{grid-template-rows:1fr}
.faq-panel > div{overflow:hidden}
.faq-a{padding:0 26px 22px;font-size:15px;line-height:1.8;color:var(--ink-soft)}

/* ============ CTA ============ */
.cta-section{padding:0 0 88px}
.cta-band{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
  background:var(--grad);
  border-radius:var(--radius-lg);
  padding:48px 52px;
  overflow:hidden;
  box-shadow:0 24px 48px rgba(108,59,244,.24);
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-70px;bottom:-110px;
  width:300px;height:300px;
  border-radius:50%;
  background:rgba(255,255,255,.14);
}
.cta-copy{position:relative;z-index:1;max-width:620px;color:#fff}
.cta-copy h2{font-size:28px;font-weight:700;line-height:1.4}
.cta-copy p{margin-top:14px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.88)}
.cta-actions{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.cta-band .btn-primary{background:#fff;color:var(--brand);box-shadow:0 12px 26px rgba(21,14,40,.22)}
.cta-band .btn-primary:hover{color:var(--brand);background:#fff}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:auto;
  background:var(--brand-deep);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:18px;
}
.footer-brand .brand-mark{width:38px;height:38px;font-size:18px}
.footer-brand .brand-name{color:#fff;font-size:16px;font-weight:700}
.footer-about{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.68);max-width:360px}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li{font-size:14.5px;color:rgba(255,255,255,.68);line-height:1.7}
.footer-col a{color:rgba(255,255,255,.72);font-size:14.5px}
.footer-col a:hover{color:var(--brand-2)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.62);font-size:13px}
.footer-bottom a:hover{color:var(--brand-2)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1080px}
}
@media (max-width:1023px){
  .app-sidebar{
    width:280px;
    transform:translateX(-100%);
    transition:transform .3s var(--ease);
    box-shadow:0 0 40px rgba(0,0,0,.3);
  }
  .app-sidebar.open{transform:translateX(0)}
  .app-main{margin-left:0}
  .topbar{display:flex}
  .container{padding:0 24px}
  .section{padding:64px 0}
  .stats-section{padding:0 0 64px}
  .page-hero{padding:36px 0 56px}
  .page-hero h1{font-size:32px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px}
  .cta-band{padding:40px 36px}
  .step-row{margin-bottom:56px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:52px 0}
  .stats-section{padding:0 0 52px}
  .cta-section{padding:0 0 52px}
  .page-hero h1{font-size:28px;margin:16px 0 14px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .section-title{font-size:24px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .stats-band{padding:36px 24px 32px}
  .stats-head h2{font-size:22px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat-num{font-size:24px}
  .step-copy{padding-right:0;margin-bottom:26px}
  .step-copy h3{font-size:21px}
  .step-media::before{display:none}
  .scene-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr;gap:8px;padding:20px 22px}
  .faq-q{padding:18px 20px;font-size:16px}
  .faq-a{padding:0 20px 20px}
  .cta-band{padding:34px 24px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .stats-grid{grid-template-columns:1fr}
  .hero-points{gap:8px 18px;font-size:13.5px}
}

/* roulang page: category2 */
:root{
  --brand:#6C3BF4;
  --brand-2:#21C8A6;
  --accent:#FF7A45;
  --deep:#221A33;
  --ink:#1B1730;
  --ink-soft:#5D5773;
  --bg:#F6F4FB;
  --surface:#FFFFFF;
  --surface-2:#EFEBFA;
  --line:#E7E2F2;
  --radius-card:20px;
  --radius-lg:28px;
  --radius-btn:12px;
  --shadow-1:0 8px 24px rgba(34,26,51,.08);
  --shadow-2:0 18px 44px rgba(34,26,51,.14);
  --container:1160px;
  --grad:linear-gradient(135deg,#6C3BF4 0%,#21C8A6 100%);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::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","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
h1,h2,h3,h4{line-height:1.3;font-weight:700;color:var(--ink)}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button{font-family:inherit;font-size:inherit}
ul{list-style:none;padding:0;margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
.off-canvas-content{padding:0 !important}

/* ------- 按钮 ------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(108,59,244,.26)}
.btn-grad:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(108,59,244,.34);color:#fff}
.btn-grad:active{transform:translateY(0);box-shadow:0 8px 18px rgba(108,59,244,.24)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-1)}
.btn-ghost:hover{border-color:rgba(108,59,244,.5);color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px}

/* ------- 左侧导航 ------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:248px;z-index:60;
  background:var(--deep);color:#fff;
  padding:24px 16px 20px;display:flex;flex-direction:column;
  border-right:1px solid rgba(255,255,255,.06);
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px;border-radius:14px}
.brand-mark{
  width:40px;height:40px;flex:0 0 auto;border-radius:12px;background:var(--grad);
  display:grid;place-items:center;font-weight:700;font-size:18px;color:#fff;
}
.brand-text strong{display:block;font-size:15px;line-height:1.35;color:#fff}
.brand-text em{font-style:normal;font-size:12px;color:rgba(255,255,255,.58);letter-spacing:.02em}
.side-nav{margin-top:28px;display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;display:flex;align-items:center;gap:12px;min-height:46px;
  padding:0 14px;border-radius:10px;font-size:15px;color:rgba(255,255,255,.72);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-link i{width:18px;text-align:center;font-size:15px}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-link.active{background:rgba(255,255,255,.09);color:#fff;font-weight:600}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--grad);
}
.sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.08)}
.side-note{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.55);text-align:center}

/* ------- 移动顶栏与抽屉 ------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  background:#fff;border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
}
.hamburger{
  width:44px;height:44px;padding:0;border:1px solid var(--line);border-radius:12px;
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:background .2s}
.hamburger:hover span{background:var(--brand)}
.topbar-brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px}
.topbar-brand .brand-mark{width:32px;height:32px;border-radius:10px;font-size:15px}
.drawer{background:var(--deep);color:#fff;width:280px;padding:20px 16px;display:flex;flex-direction:column}
.drawer-close{
  align-self:flex-end;width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
  background:transparent;color:#fff;cursor:pointer;margin-bottom:8px;
}
.drawer-close:hover{background:rgba(255,255,255,.08)}
.drawer .side-nav{margin-top:22px}

/* ------- 主区域 ------- */
.app-main{margin-left:248px;min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}
main{flex:1}
.section{padding:88px 0}
.section-alt{background:var(--surface-2)}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--brand);margin-bottom:10px;
}
.section-head h2{font-size:30px;margin-bottom:14px}
.section-head p{color:var(--ink-soft);font-size:16px}
.scroll-anchor{scroll-margin-top:88px}

/* ------- 面包屑与页头 ------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-soft);margin-bottom:22px;
}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.55}
.page-head{
  padding:56px 0 64px;
  background:
    radial-gradient(1100px 420px at 8% -12%, rgba(108,59,244,.13), transparent 62%),
    radial-gradient(900px 380px at 102% 4%, rgba(33,200,166,.15), transparent 60%),
    var(--bg);
}
.tag-label{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-1);
  color:var(--brand);font-size:13px;font-weight:600;
}
.tag-label::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}
.page-head h1{font-size:40px;line-height:1.25;margin:18px 0 16px}
.lead{font-size:17px;color:var(--ink-soft);max-width:620px}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 24px}
.trust-list{display:flex;flex-wrap:wrap;gap:12px 26px;font-size:14px;color:var(--ink-soft)}
.trust-list li{display:flex;align-items:center;gap:8px}
.trust-list i{color:var(--brand-2);font-size:14px}
.head-visual{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-2);background:#fff;
}
.head-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.head-visual figcaption{
  position:absolute;left:16px;right:16px;bottom:16px;
  background:rgba(34,26,51,.88);color:#fff;font-size:13px;line-height:1.6;
  padding:10px 14px;border-radius:12px;
}

/* ------- 标签条 ------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
.filter-chip{
  display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-soft);
  font-size:14px;font-weight:500;
  transition:transform .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.filter-chip:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.filter-chip.is-active{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 10px 22px rgba(108,59,244,.24)}

/* ------- 卡片 ------- */
.svc-card{
  height:100%;display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(108,59,244,.28)}
.svc-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(108,59,244,.12),rgba(33,200,166,.18));
  color:var(--brand);font-size:19px;margin-bottom:18px;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.svc-card:hover .svc-icon{background:var(--grad);color:#fff}
.svc-card h3{font-size:21px;margin-bottom:10px}
.svc-card > p{font-size:15px;color:var(--ink-soft);margin-bottom:16px}
.svc-points{margin-bottom:20px}
.svc-points li{
  position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-soft);margin-bottom:8px;line-height:1.7;
}
.svc-points li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--grad);
}
.link-arrow{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:15px;
}
.link-arrow::after{content:"→";transition:transform .2s var(--ease)}
.link-arrow:hover::after{transform:translateX(4px)}

/* ------- 对比表 ------- */
.compare{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.compare-head{
  display:grid;grid-template-columns:1fr 1.5fr 1.5fr;gap:16px;
  background:var(--deep);color:#fff;font-size:14px;font-weight:600;padding:18px 26px;
}
.compare-row{
  display:grid;grid-template-columns:1fr 1.5fr 1.5fr;gap:16px;align-items:center;
  padding:18px 26px;border-top:1px solid var(--line);font-size:15px;
  transition:background .2s var(--ease);
}
.compare-row:hover{background:var(--surface-2)}
.compare-row .c-key{font-weight:600}
.compare-row .c-now{color:var(--brand);font-weight:600}
.compare-row .c-old{color:var(--ink-soft)}

/* ------- 流程 ------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.step-num{
  display:block;font-size:28px;font-weight:700;font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:12px;letter-spacing:.02em;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--ink-soft)}

/* ------- 最新信息 ------- */
.notice-list{display:grid;gap:12px}
.notice-item{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 20px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:18px 24px;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.notice-item:hover{transform:translateX(4px);box-shadow:var(--shadow-2);border-color:rgba(108,59,244,.28)}
.notice-title{font-size:16px;font-weight:600}
.notice-meta{display:flex;align-items:center;gap:14px;font-size:13.5px;color:var(--ink-soft)}
.notice-meta .pill{
  display:inline-flex;align-items:center;padding:3px 12px;border-radius:999px;
  background:var(--surface-2);color:var(--brand);font-size:12.5px;font-weight:600;
}
.notice-meta .date{font-variant-numeric:tabular-nums}

/* ------- FAQ ------- */
.faq-wrap{max-width:880px}
[data-accordion].accordion{background:transparent;margin:0;border:0}
.accordion-item{
  background:#fff;border:1px solid var(--line) !important;border-radius:16px;
  box-shadow:var(--shadow-1);margin-bottom:12px;overflow:hidden;
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.accordion-item:hover{box-shadow:var(--shadow-2)}
[data-accordion] .accordion-title{
  padding:18px 60px 18px 22px;border:0;background:transparent;
  color:var(--ink);font-size:17px;font-weight:600;line-height:1.55;
}
[data-accordion] .accordion-title:hover,
[data-accordion] .accordion-title:focus{background:#F8F6FE;color:var(--brand)}
[data-accordion] .accordion-title::before{
  content:"+";right:20px;top:50%;margin-top:-16px;
  font-size:24px;font-weight:400;color:var(--brand);line-height:1.2;
}
[data-accordion] .accordion-item.is-active .accordion-title::before{content:"–"}
.accordion-content{
  padding:2px 22px 22px;border:0 !important;background:transparent !important;
  color:var(--ink-soft);font-size:15px;line-height:1.85;
}
.accordion-item.is-active{border-color:rgba(108,59,244,.32) !important}

/* ------- CTA 横幅 ------- */
.cta-banner{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--deep);color:#fff;padding:56px;
}
.cta-banner::after{
  content:"";position:absolute;right:-90px;bottom:-140px;width:340px;height:340px;
  border-radius:50%;background:var(--grad);opacity:.32;
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center}
.cta-banner h2{color:#fff;font-size:30px;margin-bottom:14px}
.cta-banner p{color:rgba(255,255,255,.72);font-size:16px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.cta-banner .btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.28);box-shadow:none}
.cta-banner .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ------- 页脚 ------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:11px;font-size:16px}
.footer-about{font-size:14px;line-height:1.8;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px;font-size:14px}
.footer-col a:hover{color:var(--brand-2)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;font-size:13px;
}
.footer-bottom a:hover{color:var(--brand-2)}

/* ------- 响应式 ------- */
@media (min-width:1280px){
  .container{max-width:1240px}
}
@media (max-width:1279px){
  .compare-head,.compare-row{grid-template-columns:1fr 1.4fr 1.4fr}
}
@media (max-width:1023px){
  .sidebar{display:none}
  .topbar{display:flex}
  .app-main{margin-left:0;padding-top:64px}
  .page-head{padding:36px 0 52px}
  .section{padding:64px 0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .cta-banner{padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .page-head h1{font-size:28px}
  .section{padding:52px 0}
  .section-head h2{font-size:24px}
  .section-head{margin-bottom:28px}
  .lead{font-size:16px}
  .head-actions .btn{width:100%}
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr;gap:6px;padding:18px 20px}
  .compare-row > div::before{content:attr(data-label) "：";font-weight:600;color:var(--ink)}
  .compare-row .c-now::before,.compare-row .c-old::before{color:var(--ink)}
  .cta-banner h2{font-size:23px}
  .cta-banner{padding:32px 24px}
  .notice-item{padding:16px 18px}
}
@media (max-width:520px){
  .page-head h1{font-size:25px}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .trust-list{flex-direction:column;gap:8px}
  .filter-chip{min-height:40px;padding:0 14px;font-size:13.5px}
}