/* roulang page: index */
:root{
  --brand-ink:#2B1E4A;
  --brand-ink-deep:#17102A;
  --brand:#6A48D7;
  --accent:#E8551A;
  --accent-deep:#C9450F;
  --accent-soft:#FFF1E9;
  --jade:#18B892;
  --bg:#F6F4F1;
  --bg-alt:#EFEBE6;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --text:#1A1526;
  --text-2:#56506B;
  --text-3:#8A849B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(26,21,38,.05);
  --shadow-2:0 8px 24px -12px rgba(43,30,74,.18);
  --shadow-3:0 16px 36px -16px rgba(43,30,74,.28);
  --container:1200px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  padding-bottom:64px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out}
a:hover{color:var(--accent)}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;color:var(--text);letter-spacing:.01em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-ink);color:rgba(255,255,255,.92);font-size:12px;line-height:1.6}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:36px;gap:16px}
.topbar-left{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.68)}
.topbar-domain{color:rgba(255,255,255,.92);letter-spacing:.02em;font-family:Inter,system-ui,sans-serif}
.topbar-sep{width:1px;height:12px;background:rgba(255,255,255,.24);display:inline-block}
.topbar-right{display:flex;align-items:center;gap:14px}
.topbar-pill{color:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.36);border-radius:999px;padding:3px 12px;font-size:12px;transition:all .2s ease-out}
.topbar-pill:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.6)}
.topbar-top{color:rgba(255,255,255,.68);font-size:12px}
.topbar-top:hover{color:#fff}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.is-scrolled{box-shadow:var(--shadow-2)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text);text-decoration:none}
.brand-mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--brand-ink),var(--brand));display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-mark svg{width:16px;height:16px}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 12px;font-size:15px;color:var(--text-2);border-radius:8px;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out}
.nav-link:hover{color:var(--text);background:var(--bg-alt)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.menu-toggle{display:none;width:44px;height:44px;border-radius:10px;align-items:center;justify-content:center;border:1px solid var(--line)}
.menu-toggle:hover{background:var(--bg-alt)}
.menu-toggle svg{width:20px;height:20px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1;transition:all .2s ease-out;border:1px solid transparent;text-align:center}
.btn svg{width:16px;height:16px;transition:transform .2s ease-out}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--accent-deep);color:#fff;text-decoration:none}
.btn-primary:hover svg{transform:translateX(2px)}
.btn-primary:active{background:#B03D0D}
.btn-secondary{background:transparent;border:1.5px solid var(--brand);color:var(--brand)}
.btn-secondary:hover{background:rgba(106,72,215,.08);color:var(--brand);text-decoration:none}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-lg{min-height:52px;padding:0 28px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1}
.badge-accent{background:var(--accent-soft);color:var(--accent)}
.badge-jade{background:rgba(24,184,146,.12);color:#0F8A6C}
.badge-plain{background:var(--bg-alt);color:var(--text-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;color:var(--brand);letter-spacing:.08em}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:32px}
.section-title{font-size:30px;margin-top:10px}
.section-lead{font-size:15px;color:var(--text-2);max-width:520px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap}
.link-more svg{width:15px;height:15px;transition:transform .2s ease-out}
.link-more:hover{color:var(--accent);text-decoration:none}
.link-more:hover svg{transform:translateX(3px)}

/* ---------- 卡片基础 ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:rgba(106,72,215,.3)}
.ratio-16x9{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:12px;background:var(--bg-alt)}
.ratio-16x9 img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.card:hover .ratio-16x9 img{transform:scale(1.03)}

/* ---------- Hero ---------- */
.hero{padding:64px 0 72px;background:var(--bg);position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero h1{font-size:40px;line-height:1.25;letter-spacing:.01em;margin-bottom:16px}
.hero-sub{font-size:17px;color:var(--text-2);margin-bottom:28px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:20px}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.trust-icon{width:18px;height:18px;border-radius:999px;background:rgba(24,184,146,.12);display:inline-flex;align-items:center;justify-content:center;color:#0F8A6C}
.trust-icon svg{width:11px;height:11px}
.hero-visual{position:relative}
.hero-visual img{border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow-2);position:relative;z-index:2}
.hero-ring{position:absolute;width:220px;height:220px;border:1px solid rgba(106,72,215,.2);border-radius:50%;right:-52px;bottom:-52px;z-index:1}
.hero-dots{position:absolute;left:-24px;top:-24px;width:140px;height:140px;z-index:1;opacity:.06;background-image:radial-gradient(var(--brand-ink) 1.6px,transparent 1.6px);background-size:14px 14px;border-radius:12px}

/* ---------- 卖点 8+4 ---------- */
.trait-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px;align-items:stretch}
.trait-main{display:flex;flex-direction:column;padding:24px}
.trait-main .ratio-16x9{margin-bottom:20px}
.trait-body h3{font-size:22px;margin-bottom:10px}
.trait-body p{font-size:15px;color:var(--text-2);margin-bottom:16px}
.icon-chip{width:36px;height:36px;border-radius:10px;background:var(--accent-soft);color:var(--accent);display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px}
.icon-chip svg{width:19px;height:19px}
.trait-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.trait-mini{padding:24px;display:flex;flex-direction:column;justify-content:center}
.trait-mini h3{font-size:18px;margin-bottom:8px}
.trait-mini p{font-size:14px;color:var(--text-2);margin-bottom:12px}

/* ---------- 步骤 ---------- */
.demo-grid{display:grid;grid-template-columns:54% 46%;gap:40px;align-items:center}
.demo-media img{border-radius:var(--radius-img);border:1px solid var(--line);box-shadow:var(--shadow-2)}
.step-list{position:relative;padding-left:4px}
.step-item{position:relative;display:flex;gap:16px;padding-bottom:26px}
.step-item:last-child{padding-bottom:0}
.step-item::before{content:"";position:absolute;left:15px;top:36px;bottom:2px;width:1px;border-left:1px dashed var(--line)}
.step-item:last-child::before{display:none}
.step-num{position:relative;z-index:2;flex:0 0 auto;width:32px;height:32px;border-radius:999px;background:rgba(106,72,215,.08);color:var(--brand);font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;font-family:Inter,system-ui,sans-serif}
.step-content h3{font-size:17px;margin-bottom:4px}
.step-content p{font-size:14px;color:var(--text-2)}

/* ---------- CMS 资讯 ---------- */
.cms-section{background:var(--bg)}
.cms-news-list{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.cms-news-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;overflow:hidden}
.cms-news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:rgba(106,72,215,.3)}
.cms-news-featured{display:flex;flex-direction:column;padding:24px}
.cms-news-featured .cms-thumb{margin-bottom:20px;display:block}
.cms-cat{align-self:flex-start;margin-bottom:12px}
.cms-title{font-size:22px;line-height:1.45;margin-bottom:10px}
.cms-title a{color:var(--text)}
.cms-title a:hover{color:var(--brand);text-decoration:none}
.cms-summary{font-size:15px;color:var(--text-2);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.cms-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-top:auto}
.cms-time{font-family:Inter,system-ui,sans-serif}
.cms-side{display:grid;grid-template-rows:repeat(3,1fr);gap:24px}
.cms-news-mini{padding:20px;display:flex;flex-direction:column}
.cms-news-mini .cms-title{font-size:16px;line-height:1.5;margin-bottom:8px}
.cms-news-mini .cms-summary{font-size:14px;-webkit-line-clamp:2;margin-bottom:12px}
.cms-news-mini .cms-cat{margin-bottom:10px}
.cms-empty{grid-column:1 / -1;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:56px 24px;text-align:center;box-shadow:var(--shadow-1)}
.cms-empty svg{width:40px;height:40px;margin:0 auto 16px;color:var(--text-3)}
.cms-empty p{color:var(--text-2);font-size:15px;margin-bottom:20px}

/* ---------- 数据带 ---------- */
.stat-band{background:var(--brand-ink-deep);color:#fff;padding:48px 0;border-radius:0}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:center}
.stat-num{font-size:36px;font-weight:700;color:var(--accent);line-height:1.2;font-family:Inter,system-ui,sans-serif}
.stat-label{font-size:13px;color:rgba(255,255,255,.68);margin-top:6px;line-height:1.6}

/* ---------- 评价 ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px;align-items:start}
.quote-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px 24px 22px;box-shadow:var(--shadow-1);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.quote-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:rgba(106,72,215,.3)}
.quote-card:nth-child(2){transform:translateY(-16px)}
.quote-card:nth-child(2):hover{transform:translateY(-18px)}
.quote-mark{font-family:"Songti SC",serif;font-size:56px;line-height:.8;color:rgba(106,72,215,.12);display:block;margin-bottom:6px}
.quote-text{font-size:15px;color:var(--text-2);margin-bottom:20px}
.quote-user{display:flex;align-items:center;gap:12px;border-top:1px dashed var(--line);padding-top:16px}
.avatar{width:40px;height:40px;border-radius:999px;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.quote-name{font-size:14px;font-weight:600;color:var(--text)}
.quote-source{font-size:12px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 24px;font-size:16px;font-weight:700;color:var(--text);text-align:left;position:relative;transition:background-color .2s ease-out}
.faq-q:hover{background:var(--bg-alt)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:0 3px 3px 0;background:var(--accent)}
.faq-icon{flex:0 0 auto;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--text-2);transition:transform .2s ease-out,color .2s ease-out,border-color .2s ease-out}
.faq-icon svg{width:13px;height:13px}
.faq-item.is-open .faq-icon{transform:rotate(180deg);color:var(--accent);border-color:rgba(232,85,26,.4)}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .3s ease-out}
.faq-a{padding:0 24px 24px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ---------- 尾段 CTA ---------- */
.cta-section{background:var(--brand-ink);color:#fff;padding:72px 0;text-align:center;position:relative;overflow:hidden}
.cta-section h2{color:#fff;font-size:30px;margin-bottom:14px}
.cta-section p{color:rgba(255,255,255,.68);font-size:15px;max-width:640px;margin:0 auto 28px}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.cta-section .btn-ghost{border-color:rgba(255,255,255,.28);color:rgba(255,255,255,.92)}
.cta-section .btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-ink);color:rgba(255,255,255,.68);padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-name{font-size:17px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);max-width:340px}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.68);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-info{color:rgba(255,255,255,.68);font-size:14px;line-height:1.9}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;font-size:12px;color:rgba(255,255,255,.45);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}

/* ---------- 底部固定转化条 ---------- */
.convert-bar{position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--surface);border-top:1px solid var(--line);box-shadow:0 -8px 24px -16px rgba(43,30,74,.28);border-radius:16px 16px 0 0;transform:translateY(120%);transition:transform .25s ease-out}
.convert-bar.is-visible{transform:translateY(0)}
.convert-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.convert-text{font-size:14px;color:var(--text-2)}
.convert-text strong{color:var(--text)}
.convert-icon{display:none}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:24px;bottom:92px;z-index:65;width:48px;height:48px;border-radius:999px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(8px);transition:all .2s ease-out}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-ink);color:#fff;text-decoration:none}
.to-top svg{width:20px;height:20px}

/* ---------- 移动端抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;background:#fff;transform:translateX(100%);transition:transform .25s ease-out;display:flex;flex-direction:column}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);min-height:64px}
.drawer-close{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line)}
.drawer-close svg{width:20px;height:20px}
.drawer-nav{flex:1 1 auto;overflow-y:auto;padding:8px 0}
.drawer-nav a{display:flex;align-items:center;min-height:56px;padding:0 20px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line)}
.drawer-nav a:hover{background:var(--bg-alt);text-decoration:none}
.drawer-nav a.is-active{color:var(--brand);font-weight:600}
.drawer-foot{padding:20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .main-nav{display:none}
  .menu-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:32px}
  .hero-ring{width:160px;height:160px;right:-30px;bottom:-30px}
  .trait-grid{grid-template-columns:1fr}
  .trait-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .demo-grid{grid-template-columns:1fr;gap:32px}
  .demo-media{order:-1}
  .cms-news-list{grid-template-columns:1fr}
  .cms-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
  .stat-grid{grid-template-columns:1fr;gap:28px}
  .quote-grid{grid-template-columns:1fr;gap:20px}
  .quote-card:nth-child(2){transform:none}
  .quote-card:nth-child(2):hover{transform:translateY(-2px)}
  .section-title{font-size:24px}
  .hero{padding:44px 0 56px}
  .hero h1{font-size:28px}
  .cta-section h2{font-size:24px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .topbar-left{display:none}
  .topbar-right{width:100%;justify-content:flex-end}
  .trait-side{grid-template-columns:1fr}
  .cms-side{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-btns .btn{width:100%}
  .cms-news-featured,.cms-news-mini,.trait-main,.trait-mini{padding:20px}
  .to-top{right:16px;bottom:84px;width:44px;height:44px}
  .convert-inner{min-height:56px;padding:0 16px}
  .convert-text{display:none}
  .convert-icon{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:var(--bg-alt);color:var(--brand)}
  .convert-icon svg{width:20px;height:20px}
  body{padding-bottom:56px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .card:hover,.cms-news-card:hover,.quote-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --brand-ink:#2B1E4A;
  --brand-ink-deep:#17102A;
  --brand:#6A48D7;
  --accent:#E8551A;
  --accent-dark:#C9450F;
  --accent-soft:#FFF1E9;
  --jade:#18B892;
  --jade-soft:#E6F8F3;
  --bg:#F6F4F1;
  --bg-alt:#EFEBE6;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --text:#1A1526;
  --text-2:#56506B;
  --text-3:#8A849B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(26,21,38,.05);
  --shadow-2:0 8px 24px -12px rgba(43,30,74,.18);
  --shadow-3:0 16px 36px -16px rgba(43,30,74,.28);
  --tran:200ms ease-out;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  padding-bottom:84px;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--tran),background-color var(--tran),border-color var(--tran);}
a:hover{color:var(--accent);text-decoration:underline;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.35;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* 顶部信息条 */
.topbar{background:var(--brand-ink);color:rgba(255,255,255,.72);font-size:12px;line-height:1.6;}
.topbar-inner{max-width:1200px;margin:0 auto;padding:0 24px;min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0;}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em;}
.topbar-tip{color:rgba(255,255,255,.55);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:14px;}
.topbar-link{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border:1px solid rgba(255,255,255,.32);
  border-radius:999px;color:#fff;font-size:12px;
}
.topbar-link:hover{background:rgba(255,255,255,.1);color:#fff;text-decoration:none;border-color:rgba(255,255,255,.6);}
.topbar-top{color:rgba(255,255,255,.72);}
.topbar-top:hover{color:#fff;text-decoration:none;}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow var(--tran),height var(--tran);
}
.site-header.is-scrolled{box-shadow:var(--shadow-2);}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  transition:height var(--tran);
}
.site-header.is-scrolled .nav-inner{height:56px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);text-decoration:none;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--brand-ink);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:18px;height:18px;display:block;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}

.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;
  font-size:15px;color:var(--text-2);border-radius:8px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left center;transition:transform var(--tran);
}
.nav-link:hover{color:var(--text);text-decoration:none;background:var(--bg-alt);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}

.nav-actions{display:flex;align-items:center;gap:10px;}
.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;white-space:nowrap;
  transition:background-color var(--tran),color var(--tran),border-color var(--tran),transform var(--tran),box-shadow var(--tran);
}
.btn-primary{background:var(--accent);color:#fff;border:1px solid var(--accent);}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;text-decoration:none;}
.btn-primary:active{transform:translateY(1px);}
.btn-primary .arrow{transition:transform var(--tran);}
.btn-primary:hover .arrow{transform:translateX(2px);}
.btn-secondary{background:transparent;color:var(--brand);border:1.5px solid var(--brand);}
.btn-secondary:hover{background:rgba(106,72,215,.08);color:var(--brand);text-decoration:none;}
.btn-ghost{background:transparent;color:var(--text-2);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);text-decoration:none;background:transparent;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;}
.nav-cta{height:40px;padding:0 18px;font-size:14px;}
.menu-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface);
}
.menu-toggle svg{width:20px;height:20px;}

/* 抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;background:#fff;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform 240ms ease-out;visibility:hidden;
}
.drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:0 20px;height:64px;border-bottom:1px solid var(--line);flex-shrink:0;
}
.drawer-close{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:var(--radius-btn);}
.drawer-close svg{width:20px;height:20px;}
.drawer-body{flex:1;overflow-y:auto;padding:8px 12px;}
.drawer-link{
  display:flex;align-items:center;height:56px;padding:0 12px;border-bottom:1px dashed var(--line);
  font-size:16px;color:var(--text-2);border-radius:8px;
}
.drawer-link:hover{background:var(--bg-alt);color:var(--text);text-decoration:none;}
.drawer-link.is-active{color:var(--brand);font-weight:600;background:var(--accent-soft);}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);flex-shrink:0;}
.drawer-foot .btn{width:100%;}
body.drawer-open{overflow:hidden;}

/* 面包屑 */
.crumb-wrap{border-bottom:1px solid var(--line);background:var(--surface);}
.crumb{
  max-width:1200px;margin:0 auto;padding:14px 24px;font-size:13px;color:var(--text-3);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:var(--text-3);}
.crumb .current{color:var(--text);font-weight:600;max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* 文章头部 */
.article-hero{background:var(--surface);padding:40px 0 32px;border-bottom:1px solid var(--line);}
.article-hero .container{max-width:900px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-jade{background:var(--jade-soft);color:#0F8C6E;}
.article-hero h1{
  margin:18px 0 0;font-size:34px;line-height:1.3;font-weight:700;letter-spacing:.01em;color:var(--brand-ink);
}
.article-meta{
  margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--text-3);
}
.article-meta .dot{width:1px;height:12px;background:var(--line);display:inline-block;}
.article-meta strong{color:var(--text-2);font-weight:600;}

/* 正文布局 */
.article-main{padding:48px 0 72px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:40px;align-items:start;
}
.article-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:40px;
}
.cms-article-body{font-size:17px;line-height:1.9;color:var(--text);}
.cms-article-body > *:first-child{margin-top:0;}
.cms-article-body p{margin:0 0 1.2em;}
.cms-article-body a{color:var(--brand);text-decoration:underline;text-decoration-color:rgba(106,72,215,.4);}
.cms-article-body a:hover{color:var(--accent);text-decoration-color:var(--accent);}
.cms-article-body h2{
  position:relative;font-size:24px;line-height:1.4;font-weight:700;color:var(--brand-ink);
  margin:40px 0 16px;padding-left:14px;
}
.cms-article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--accent);
}
.cms-article-body h3{font-size:20px;font-weight:600;color:var(--brand-ink);margin:28px 0 12px;}
.cms-article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--text);}
.cms-article-body ul,.cms-article-body ol{margin:0 0 1.3em;padding-left:0;}
.cms-article-body ul li{position:relative;padding-left:22px;margin:0 0 .6em;}
.cms-article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:999px;background:var(--brand);
}
.cms-article-body ol{counter-reset:artol;}
.cms-article-body ol li{position:relative;padding-left:34px;margin:0 0 .7em;counter-increment:artol;}
.cms-article-body ol li::before{
  content:counter(artol);position:absolute;left:0;top:.28em;width:22px;height:22px;border-radius:999px;
  background:rgba(106,72,215,.1);color:var(--brand);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.cms-article-body blockquote{
  margin:24px 0;padding:16px 22px;background:var(--bg-alt);border-left:3px solid var(--brand);
  border-radius:0 var(--radius-img) var(--radius-img) 0;color:var(--text-2);
  font-family:"Songti SC",serif;font-size:16px;
}
.cms-article-body blockquote p:last-child{margin-bottom:0;}
.cms-article-body img{border-radius:var(--radius-img);margin:24px auto;box-shadow:var(--shadow-2);}
.cms-article-body figure{margin:24px 0;}
.cms-article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px;}
.cms-article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.cms-article-body th{background:var(--bg-alt);color:var(--brand-ink);font-weight:600;text-align:left;}
.cms-article-body th,.cms-article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.cms-article-body tr:last-child td{border-bottom:0;}
.cms-article-body hr{border:0;border-top:1px dashed var(--line);margin:32px 0;}
.article-empty{
  text-align:center;padding:48px 20px;border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--bg-alt);
}
.article-empty .empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text-3);
}
.article-empty h2{font-size:20px;margin-bottom:8px;}
.article-empty p{color:var(--text-2);margin:0 0 20px;font-size:15px;}

/* 标签 */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:var(--bg-alt);color:var(--text-2);font-size:13px;
}
.tag:hover{background:var(--accent-soft);color:var(--accent);text-decoration:none;}

/* 侧栏 */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);}
.side-title{font-size:15px;font-weight:700;color:var(--brand-ink);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title span.bar{width:4px;height:14px;border-radius:2px;background:var(--accent);display:inline-block;}
.side-list li{padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px;}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list a{color:var(--text-2);display:block;line-height:1.6;}
.side-list a:hover{color:var(--accent);}
.side-note{font-size:13px;color:var(--text-3);line-height:1.8;}

/* 上下篇 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px;}
.post-nav-item{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-1);transition:transform var(--tran),box-shadow var(--tran),border-color var(--tran);
}
.post-nav-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:rgba(106,72,215,.3);text-decoration:none;}
.post-nav-item .pn-label{display:block;font-size:12px;color:var(--text-3);margin-bottom:8px;}
.post-nav-item .pn-title{display:block;font-size:15px;font-weight:600;color:var(--text);line-height:1.6;}
.post-nav-item:hover .pn-title{color:var(--brand);}
.post-nav-item.next{text-align:right;}

/* 相关推荐 */
.related{margin-top:56px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:24px;font-weight:700;color:var(--brand-ink);}
.section-head p{margin:6px 0 0;font-size:14px;color:var(--text-2);}
.section-link{font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap;}
.cms-related-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-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 var(--tran),box-shadow var(--tran),border-color var(--tran);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:rgba(106,72,215,.3);text-decoration:none;}
.ratio-16x9{position:relative;aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden;}
.ratio-16x9 img{width:100%;height:100%;object-fit:cover;transition:transform var(--tran);}
.rel-card:hover .ratio-16x9 img{transform:scale(1.03);}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:16px;font-weight:600;line-height:1.6;color:var(--text);}
.rel-body p{margin:0;font-size:13px;color:var(--text-2);line-height:1.75;}
.rel-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-3);margin-top:auto;padding-top:4px;}

.back-row{margin-top:40px;display:flex;justify-content:center;}

/* 尾段 CTA */
.tail-cta{
  background:var(--brand-ink-deep);color:rgba(255,255,255,.92);padding:72px 0;margin-top:72px;
  border-top-left-radius:32px;border-top-right-radius:32px;
}
.tail-cta .inner{max-width:720px;margin:0 auto;text-align:center;padding:0 24px;}
.tail-cta h2{color:#fff;font-size:28px;font-weight:700;}
.tail-cta p{color:rgba(255,255,255,.68);font-size:15px;margin:14px 0 28px;}
.tail-cta .actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.tail-cta .btn-ghost{color:rgba(255,255,255,.88);border-color:rgba(255,255,255,.28);}
.tail-cta .btn-ghost:hover{color:#fff;border-color:rgba(255,255,255,.7);background:transparent;}

/* 页脚 */
.site-footer{background:var(--brand-ink);color:rgba(255,255,255,.68);padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-name{color:#fff;font-size:17px;font-weight:700;}
.footer-desc{line-height:1.85;color:rgba(255,255,255,.68);margin:0;font-size:13.5px;}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-info{margin:0;line-height:2;font-size:13.5px;color:rgba(255,255,255,.68);}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:12px;color:rgba(255,255,255,.45);
}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:100px;z-index:70;width:48px;height:48px;border-radius:999px;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-3);opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--tran),transform var(--tran),visibility var(--tran),background-color var(--tran);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--accent);color:#fff;text-decoration:none;}
.to-top svg{width:20px;height:20px;}

/* 底部固定转化条 */
.float-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;background:var(--surface);
  border-top:1px solid var(--line);box-shadow:0 -8px 24px -16px rgba(43,30,74,.28);
  border-top-left-radius:16px;border-top-right-radius:16px;
  transform:translateY(120%);transition:transform 240ms ease-out;
}
.float-bar.is-show{transform:translateY(0);}
.float-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.float-text{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:10px;}
.float-text strong{color:var(--brand-ink);font-weight:600;}
.float-dot{width:8px;height:8px;border-radius:999px;background:var(--jade);flex-shrink:0;}

@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap;}
  .article-side .side-card{flex:1 1 260px;}
  .cms-related-list{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:900px){
  .main-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .nav-cta{display:none;}
}
@media (max-width:767px){
  body{padding-bottom:72px;}
  .container,.topbar-inner,.nav-inner,.crumb{padding-left:16px;padding-right:16px;}
  .topbar-tip{display:none;}
  .topbar-top{display:none;}
  .article-hero{padding:28px 0 24px;}
  .article-hero h1{font-size:26px;}
  .article-main{padding:32px 0 56px;}
  .article-card{padding:22px;border-radius:14px;}
  .cms-article-body{font-size:16.5px;}
  .cms-article-body h2{font-size:21px;margin-top:32px;}
  .cms-article-body h3{font-size:18px;}
  .post-nav{grid-template-columns:1fr;gap:14px;}
  .post-nav-item.next{text-align:left;}
  .cms-related-list{grid-template-columns:1fr;gap:18px;}
  .tail-cta{padding:56px 0;margin-top:56px;border-radius:24px 24px 0 0;}
  .tail-cta h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .site-footer{padding-top:48px;}
  .footer-bottom{flex-direction:column;}
  .to-top{right:16px;bottom:88px;}
  .float-inner{height:56px;padding:0 16px;gap:10px;}
  .float-text{display:none;}
  .float-bar{transform:translateY(0);}
}
@media (max-width:520px){
  .brand-name{font-size:15px;max-width:150px;overflow:hidden;text-overflow:ellipsis;}
  .article-hero h1{font-size:23px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .article-side{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:1ms !important;animation-duration:1ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --brand-ink:#2B1E4A;
  --brand-ink-deep:#17102A;
  --brand:#6A48D7;
  --accent:#E8551A;
  --accent-dark:#C9450F;
  --accent-soft:#FFF1E9;
  --jade:#18B892;
  --jade-soft:#E7F8F3;
  --bg:#F6F4F1;
  --bg-alt:#EFEBE6;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --text:#1A1526;
  --text-2:#56506B;
  --text-3:#8A849B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(26,21,38,.05);
  --shadow-2:0 8px 24px -12px rgba(43,30,74,.18);
  --shadow-3:0 16px 36px -16px rgba(43,30,74,.28);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:Inter,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  padding-bottom:84px;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--accent);text-decoration:underline;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:.01em;}
h1{font-size:clamp(28px,3.4vw,40px);line-height:1.25;font-weight:700;}
h2{font-size:clamp(24px,2.6vw,30px);line-height:1.35;font-weight:700;}
h3{font-size:22px;line-height:1.45;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:80px 0;}
.section-alt{background:linear-gradient(180deg,#F6F4F1 0%,#F1EDF3 100%);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.section-head p{color:var(--text-2);font-size:15px;max-width:640px;margin-top:10px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:4px 12px;font-weight:600;}
.lead{font-size:16px;color:var(--text-2);}

/* 顶部信息条 */
.topbar{background:var(--brand-ink);color:rgba(255,255,255,.74);font-size:12px;height:36px;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;height:36px;}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0;}
.topbar-left span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.topbar a{color:rgba(255,255,255,.86);}
.topbar a:hover{color:#fff;}
.topbar-pill{border:1px solid rgba(255,255,255,.32);border-radius:999px;padding:2px 12px;line-height:1.6;}
.topbar-pill:hover{border-color:rgba(255,255,255,.7);text-decoration:none;}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out;}
.site-header.is-scrolled{box-shadow:var(--shadow-2);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;}
@media (min-width:1024px){.header-inner{height:72px;}}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);text-decoration:none;}
.brand-mark{width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,#6A48D7 0%,#3C2287 100%);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.brand-mark svg{width:17px;height:17px;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.main-nav{display:none;align-items:center;gap:4px;}
@media (min-width:768px){.main-nav{display:flex;}}
.nav-link{position:relative;display:inline-block;padding:10px 12px;font-size:15px;color:var(--text-2);border-radius:8px;line-height:1.4;}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left center;transition:transform .2s ease-out;}
.nav-link:hover{color:var(--text);text-decoration:none;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.header-cta{display:none;}
@media (min-width:768px){.header-cta{display:inline-flex;}}
.menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface);color:var(--text);cursor:pointer;transition:border-color .2s ease-out,background .2s ease-out;}
.menu-toggle:hover{border-color:var(--brand);background:#F7F5FE;}
@media (min-width:768px){.menu-toggle{display:none;}}

/* 抽屉菜单 */
.drawer{position:fixed;inset:0;z-index:90;background:#fff;display:none;flex-direction:column;}
.drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 16px;border-bottom:1px solid var(--line);}
.drawer-nav{flex:1;overflow-y:auto;padding:8px 16px;}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;min-height:56px;padding:0 4px;font-size:16px;color:var(--text);border-bottom:1px dashed var(--line);}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;}
.drawer-foot{padding:16px;border-top:1px solid var(--line);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;text-align:center;}
.btn:hover{text-decoration:none;}
.btn-lg{min-height:52px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;}
.btn-primary:hover .btn-arrow{transform:translateX(2px);}
.btn-arrow{transition:transform .2s ease-out;}
.btn-secondary{background:transparent;border:1.5px solid var(--brand);color:var(--brand);}
.btn-secondary:hover{background:rgba(106,72,215,.08);color:var(--brand);}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text-2);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:3px 12px;font-size:12px;font-weight:600;line-height:1.7;}
.badge-accent{background:var(--accent-soft);color:var(--accent);}
.badge-jade{background:var(--jade-soft);color:#0E8B6D;}
.badge-plain{background:#F1EFF7;color:var(--text-2);}

/* 页头 */
.page-head{background:linear-gradient(180deg,#F1EDF3 0%,#F8F6F3 100%);border-bottom:1px solid var(--line);padding:40px 0 48px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb .sep{color:var(--text-3);}
.page-head h1{margin-bottom:16px;max-width:820px;}
.page-head .lead{max-width:700px;}
.page-head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

/* 卡片 */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:rgba(106,72,215,.3);}
.ratio-16x9{position:relative;width:100%;aspect-ratio:16/9;background:var(--bg-alt);border-radius:var(--radius-img);overflow:hidden;}
.ratio-16x9 img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.card:hover .ratio-16x9 img{transform:scale(1.03);}
.card-body{padding:24px;}
.card-body h3{margin-bottom:10px;}
.card-body p{color:var(--text-2);font-size:15px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);margin-top:16px;}
.text-link .btn-arrow{transition:transform .2s ease-out;}
.text-link:hover{color:var(--accent);}
.text-link:hover .btn-arrow{transform:translateX(2px);}

/* 图文卡片网格 */
.card-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr);}}
.card-feature{grid-column:1/-1;display:grid;grid-template-columns:1fr;gap:0;overflow:hidden;}
@media (min-width:768px){.card-feature{grid-template-columns:1.15fr 1fr;}}
.card-feature .feature-media{position:relative;min-height:240px;}
.card-feature .feature-media img{width:100%;height:100%;object-fit:cover;}
.card-feature .feature-text{padding:28px;display:flex;flex-direction:column;justify-content:center;}
@media (min-width:768px){.card-feature .feature-text{padding:36px;}}
.card-feature .feature-text h3{font-size:24px;margin-bottom:12px;}
.entry-card{display:flex;flex-direction:column;overflow:hidden;}
.entry-card .card-body{flex:1;display:flex;flex-direction:column;}
.entry-card .card-body p{flex:1;}

/* 核对步骤 */
.check-steps{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.check-steps{grid-template-columns:repeat(3,1fr);gap:24px;}}
.check-step{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);}
.check-step .step-no{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:999px;background:rgba(106,72,215,.1);color:var(--brand);font-weight:700;font-size:14px;font-family:var(--font-num);margin-bottom:14px;}
.check-step h3{font-size:18px;margin-bottom:8px;}
.check-step p{font-size:14px;color:var(--text-2);}

/* 要素清单 */
.spec-list{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);overflow:hidden;}
.spec-item{display:flex;align-items:flex-start;gap:16px;padding:20px 24px;border-bottom:1px dashed var(--line);transition:background .2s ease-out;}
.spec-item:last-child{border-bottom:0;}
.spec-item:hover{background:var(--bg-alt);}
.spec-icon{width:32px;height:32px;border-radius:10px;background:#F3F0FB;color:var(--brand);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.spec-main{flex:1;min-width:0;}
.spec-main h3{font-size:16px;font-weight:600;margin-bottom:4px;}
.spec-main p{font-size:14px;color:var(--text-2);}
.spec-side{flex-shrink:0;padding-top:2px;}

/* 深色提示带 */
.notice-band{background:var(--brand-ink-deep);color:rgba(255,255,255,.92);border-radius:24px;padding:40px 32px;}
.notice-band h2{color:#fff;margin-bottom:12px;}
.notice-band p{color:rgba(255,255,255,.68);font-size:15px;max-width:720px;}
.notice-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.notice-tag{border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:rgba(255,255,255,.86);border-radius:999px;padding:6px 14px;font-size:13px;}
.notice-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:32px;}
@media (min-width:768px){.notice-grid{grid-template-columns:repeat(3,1fr);}}
.notice-cell{border-left:2px solid rgba(232,85,26,.7);padding-left:16px;}
.notice-cell strong{display:block;font-size:16px;color:#fff;margin-bottom:6px;font-weight:600;}
.notice-cell span{font-size:14px;color:rgba(255,255,255,.62);}

/* FAQ */
.faq-wrap{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;position:relative;transition:background .2s ease-out;}
.faq-q:hover{background:#FAF8FE;}
.faq-q::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:var(--accent);transform:scaleY(0);transform-origin:center;transition:transform .2s ease-out;}
.faq-item.is-open .faq-q::before{transform:scaleY(1);}
.faq-icon{flex-shrink:0;width:20px;height:20px;color:var(--brand);transition:transform .25s ease-out;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
.faq-a-inner{padding:0 24px 22px 24px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* 尾段 CTA */
.cta-section{background:var(--brand-ink-deep);color:#fff;padding:72px 0;position:relative;overflow:hidden;}
.cta-section::before{content:"";position:absolute;top:-60px;right:-40px;width:260px;height:260px;border-radius:50%;border:1px solid rgba(106,72,215,.45);}
.cta-inner{position:relative;max-width:720px;margin:0 auto;text-align:center;}
.cta-inner h2{color:#fff;margin-bottom:14px;}
.cta-inner p{color:rgba(255,255,255,.68);font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px;}
.cta-section .btn-ghost{border-color:rgba(255,255,255,.28);color:rgba(255,255,255,.9);}
.cta-section .btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.06);}

/* 页脚 */
.site-footer{background:var(--brand-ink);color:rgba(255,255,255,.68);padding:56px 0 24px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-name{color:#fff;font-size:17px;font-weight:700;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:380px;}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-info{font-size:14px;line-height:2;color:rgba(255,255,255,.62);}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12px;color:rgba(255,255,255,.45);}

/* 底部固定转化条 */
.bottom-bar{position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 24px -14px rgba(43,30,74,.28);border-radius:16px 16px 0 0;padding:0 16px;transform:translateY(110%);transition:transform .3s ease-out;}
.bottom-bar.is-visible{transform:translateY(0);}
.bottom-bar-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;}
.bottom-bar-text{font-size:14px;color:var(--text-2);display:none;}
@media (min-width:768px){.bottom-bar-inner{min-height:64px;}.bottom-bar-text{display:block;}}
.bottom-bar .btn{min-height:40px;padding:0 20px;font-size:14px;}

/* 返回顶部 */
.back-top{position:fixed;right:20px;bottom:84px;z-index:75;width:48px;height:48px;border-radius:50%;border:0;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s ease-out,transform .25s ease-out,visibility .25s ease-out,background .2s ease-out;}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:#5636C4;}
@media (min-width:768px){.back-top{bottom:96px;}}

@media (max-width:767px){
  .section{padding:48px 0;}
  .container{padding:0 16px;}
  .card-body{padding:20px;}
  .notice-band{padding:28px 20px;border-radius:18px;}
  .page-head{padding:28px 0 36px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .card:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --brand-ink:#2B1E4A;
  --brand-ink-deep:#17102A;
  --brand:#6A48D7;
  --accent:#E8551A;
  --accent-dark:#C9450F;
  --accent-soft:#FFF1E9;
  --jade:#18B892;
  --bg:#F6F4F1;
  --bg-alt:#EFEBE6;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --text:#1A1526;
  --text-2:#56506B;
  --text-3:#8A849B;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(26,21,38,.05);
  --shadow-2:0 8px 24px -12px rgba(43,30,74,.18);
  --shadow-3:0 16px 36px -16px rgba(43,30,74,.28);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--accent);text-decoration:underline;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.top-bar{background:var(--brand-ink);color:rgba(255,255,255,.68);font-size:12px;line-height:1.6;}
.top-bar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.top-bar-left{display:flex;align-items:center;gap:12px;min-width:0;}
.top-bar-domain{color:rgba(255,255,255,.92);font-weight:600;letter-spacing:.02em;}
.top-bar-tip{color:rgba(255,255,255,.55);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.top-bar-right{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.top-bar-link{color:rgba(255,255,255,.75);border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:2px 12px;line-height:1.7;}
.top-bar-link:hover{color:#fff;border-color:rgba(255,255,255,.6);text-decoration:none;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:var(--shadow-2);}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.site-header.is-scrolled .nav-inner{height:64px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);text-decoration:none;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-ink) 100%);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-mark svg{width:18px;height:18px;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 14px;
  font-size:15px;color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--text);text-decoration:none;background:var(--bg);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.menu-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);border-radius:10px;background:#fff;
  padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 抽屉菜单 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;
  background:#fff;
  transform:translateY(-100%);
  transition:transform .24s ease-out;
  display:flex;flex-direction:column;
  padding:88px 24px 32px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-link{
  display:flex;align-items:center;
  min-height:56px;
  font-size:17px;color:var(--text);
  border-bottom:1px solid var(--line);
  text-decoration:none;
}
.drawer-link:hover{color:var(--brand);text-decoration:none;}
.drawer-link.is-active{color:var(--brand);font-weight:600;}
.drawer-cta{margin-top:32px;width:100%;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
  text-decoration:none;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-2);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-primary .arrow{transition:transform .2s ease-out;}
.btn-primary:hover .arrow{transform:translateX(2px);}
.btn-secondary{background:transparent;color:var(--brand);border:1.5px solid var(--brand);}
.btn-secondary:hover{background:rgba(106,72,215,.08);color:var(--brand);}
.btn-ghost{background:transparent;color:var(--text-2);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 32px;font-size:16px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;line-height:1.6;font-weight:600;
  background:var(--accent-soft);color:var(--accent);
}
.badge-jade{background:rgba(24,184,146,.12);color:#0E8F71;}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  padding:56px 0 64px;
  background:linear-gradient(180deg,#F3F0FB 0%,var(--bg) 100%);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  opacity:.08;
  pointer-events:none;
}
.page-hero-inner{position:relative;max-width:840px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.page-hero h1{font-size:40px;line-height:1.25;margin-bottom:16px;}
.page-hero .lede{font-size:16px;color:var(--text-2);max-width:640px;}
.page-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0;}
.section-alt{background:var(--bg-alt);}
.section-white{background:#fff;}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head h2{font-size:30px;line-height:1.35;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--brand);border-radius:2px;}

/* ---------- 交替图文 ---------- */
.split{
  display:grid;grid-template-columns:1fr 1fr;
  gap:48px;align-items:center;
}
.split + .split{margin-top:72px;}
.split.reverse .split-media{order:2;}
.split-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  background:var(--bg-alt);
}
.split-media .ratio{position:relative;aspect-ratio:16/9;overflow:hidden;}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.split-media:hover img{transform:scale(1.03);}
.split-body h2{font-size:26px;line-height:1.4;margin-bottom:16px;}
.split-body p{color:var(--text-2);font-size:16px;}
.split-body p + p{margin-top:14px;}
.point-list{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.point-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:15px;color:var(--text);
  padding:12px 16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  box-shadow:var(--shadow-1);
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.point-list li:hover{border-color:rgba(106,72,215,.3);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.point-list svg{width:18px;height:18px;flex-shrink:0;margin-top:4px;stroke:var(--jade);}

/* ---------- 安全习惯速查 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.quick-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.quick-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:rgba(106,72,215,.3);}
.quick-num{
  width:32px;height:32px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(106,72,215,.08);color:var(--brand);
  font-size:14px;font-weight:700;margin-bottom:16px;
}
.quick-card h3{font-size:17px;line-height:1.5;margin-bottom:8px;}
.quick-card p{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;align-items:flex-start;gap:14px;
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--accent);
  border-radius:12px;
  padding:20px 24px;
  box-shadow:var(--shadow-1);
  margin-top:32px;
}
.notice svg{width:22px;height:22px;flex-shrink:0;stroke:var(--accent);margin-top:3px;}
.notice strong{display:block;font-size:16px;margin-bottom:4px;}
.notice p{font-size:14px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:#fff;
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-item{position:relative;}
.faq-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
  opacity:0;transition:opacity .2s ease-out;
}
.faq-item.is-open::before{opacity:1;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px 20px 28px;
  background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q:hover{background:var(--bg-alt);}
.faq-icon{
  position:relative;width:20px;height:20px;flex-shrink:0;
  transition:transform .2s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;transition:transform .2s ease-out;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease-out;
}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a p{
  padding:0 24px 22px 28px;
  font-size:15px;line-height:1.8;color:var(--text-2);
}

/* ---------- 尾段 CTA ---------- */
.cta-band{
  background:var(--brand-ink-deep);
  padding:80px 0;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  opacity:.14;pointer-events:none;
}
.cta-inner{position:relative;max-width:680px;margin:0 auto;}
.cta-band h2{color:rgba(255,255,255,.92);font-size:30px;line-height:1.35;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.68);font-size:16px;margin-bottom:32px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.btn-ghost-light{background:transparent;color:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.3);}
.btn-ghost-light:hover{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.6);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-ink);color:rgba(255,255,255,.68);padding:72px 0 32px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand) 0%,#8A6BE0 100%);}
.footer-name{color:rgba(255,255,255,.92);font-size:17px;font-weight:700;}
.footer-desc{color:rgba(255,255,255,.68);line-height:1.8;font-size:14px;max-width:360px;}
.footer-title{color:rgba(255,255,255,.92);font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-info{color:rgba(255,255,255,.68);line-height:1.9;font-size:14px;margin:0;}
.footer-bottom{
  margin-top:48px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12px;color:rgba(255,255,255,.45);
}

/* ---------- 底部固定条 ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;
  border-top:1px solid var(--line);
  box-shadow:0 -8px 24px -16px rgba(43,30,74,.28);
  border-radius:16px 16px 0 0;
  transform:translateY(100%);
  transition:transform .24s ease-out;
}
.bottom-bar.is-visible{transform:translateY(0);}
.bottom-bar-inner{
  min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:10px;padding-bottom:10px;
}
.bottom-bar-text{font-size:14px;color:var(--text-2);}
.bottom-bar-icon{display:none;}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:96px;z-index:75;
  width:48px;height:48px;border-radius:999px;
  background:var(--brand);color:#fff;border:0;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s ease-out,background-color .2s ease-out;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--accent);}
.to-top svg{width:20px;height:20px;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .page-hero h1{font-size:32px;}
  .split{gap:32px;}
  .split-body h2{font-size:23px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .top-bar-tip,.top-bar-top{display:none;}
  .nav-inner{height:64px;}
  .site-header.is-scrolled .nav-inner{height:60px;}
  .brand-name{font-size:15px;}
  .nav-cta-desktop{display:none;}
  .page-hero{padding:40px 0 48px;}
  .page-hero h1{font-size:28px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:24px;}
  .split{grid-template-columns:1fr;}
  .split.reverse .split-media{order:0;}
  .split + .split{margin-top:48px;}
  .quick-grid{grid-template-columns:1fr;}
  .cta-band{padding:56px 0;}
  .cta-band h2{font-size:24px;}
  .site-footer{padding:56px 0 96px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .bottom-bar{transform:translateY(0);border-radius:16px 16px 0 0;padding-bottom:env(safe-area-inset-bottom);}
  .bottom-bar-inner{min-height:56px;justify-content:space-between;}
  .bottom-bar-text{display:none;}
  .bottom-bar-icon{
    display:flex;align-items:center;gap:8px;
    font-size:13px;color:var(--text-2);
  }
  .bottom-bar-icon svg{width:18px;height:18px;stroke:var(--brand);}
  .to-top{bottom:84px;right:16px;width:44px;height:44px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .hero-meta{gap:8px;}
  .btn{width:100%;}
  .page-hero-actions{flex-direction:column;}
  .cta-actions{flex-direction:column;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --brand-ink:#2B1E4A;
  --brand-ink-deep:#17102A;
  --brand:#6A48D7;
  --accent:#E8551A;
  --accent-deep:#C9450F;
  --accent-soft:#FFF1E9;
  --jade:#18B892;
  --bg:#F6F4F1;
  --bg-alt:#EFEBE6;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --text:#1A1526;
  --text-2:#56506B;
  --text-3:#8A849B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(26,21,38,.05);
  --shadow-2:0 8px 24px -12px rgba(43,30,74,.18);
  --shadow-3:0 16px 36px -16px rgba(43,30,74,.28);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:"Inter",system-ui,sans-serif;
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  padding-bottom:64px;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--accent);text-decoration:underline;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}

:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:4px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--brand-ink);
  color:rgba(255,255,255,.92);
  font-size:12px;
  line-height:1.6;
  height:36px;
  display:flex;
  align-items:center;
}
.topbar-inner{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topbar-left{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
}
.topbar-domain{
  font-family:var(--font-num);
  letter-spacing:.02em;
  color:#fff;
  white-space:nowrap;
}
.topbar-tip{
  color:rgba(255,255,255,.68);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.topbar-right{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.topbar-pill{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border:1px solid rgba(255,255,255,.34);
  border-radius:999px;
  color:#fff;
  font-size:12px;
  transition:background .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.topbar-pill:hover{
  background:rgba(255,255,255,.12);
  border-color:rgba(255,255,255,.6);
  color:#fff;
  text-decoration:none;
}
.topbar-link{
  color:rgba(255,255,255,.68);
  font-size:12px;
}
.topbar-link:hover{color:#fff;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{
  box-shadow:var(--shadow-2);
}
.header-inner{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  transition:height .2s ease-out;
}
.site-header.is-scrolled .header-inner{height:64px;}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:28px;
  height:28px;
  border-radius:8px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.brand-mark svg{width:18px;height:18px;}
.brand-name{
  font-size:17px;
  font-weight:700;
  color:var(--brand-ink);
  letter-spacing:.01em;
  white-space:nowrap;
}

.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:8px;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease-out;
}
.nav-link:hover{
  color:var(--brand-ink);
  background:rgba(106,72,215,.06);
  text-decoration:none;
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{
  color:var(--brand-ink);
  font-weight:600;
}
.nav-link.is-active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:12px;}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--surface);
  align-items:center;
  justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--brand-ink);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:var(--shadow-1);
}
.btn-primary:hover{
  background:var(--accent-deep);
  color:#fff;
  text-decoration:none;
  box-shadow:var(--shadow-2);
}
.btn-primary .btn-arrow{transition:transform .2s ease-out;}
.btn-primary:hover .btn-arrow{transform:translateX(2px);}
.btn-secondary{
  background:transparent;
  border:1.5px solid var(--brand);
  color:var(--brand);
}
.btn-secondary:hover{
  background:rgba(106,72,215,.08);
  color:var(--brand);
  text-decoration:none;
}
.btn-ghost{
  background:transparent;
  border:1px solid var(--line);
  color:var(--text);
}
.btn-ghost:hover{
  border-color:var(--brand);
  color:var(--brand);
  text-decoration:none;
}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.4;cursor:not-allowed;}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:var(--brand-ink-deep);color:rgba(255,255,255,.92);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-title{
  font-size:30px;
  line-height:1.35;
  font-weight:700;
  color:var(--brand-ink);
  letter-spacing:.01em;
}
.section-dark .section-title{color:#fff;}
.section-sub{
  margin-top:10px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  max-width:62ch;
}
.section-dark .section-sub{color:rgba(255,255,255,.68);}
.section-more{
  font-size:14px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.section-more:hover{color:var(--accent);}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--accent);
  font-weight:600;
  text-transform:uppercase;
}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1;
}
.badge-accent{background:var(--accent-soft);color:var(--accent);}
.badge-jade{background:rgba(24,184,146,.12);color:#0F8A6C;}
.badge-soft{background:rgba(106,72,215,.10);color:var(--brand);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  background:linear-gradient(180deg,#FBF9F6 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  right:-120px;
  top:-80px;
  width:340px;
  height:340px;
  border-radius:50%;
  border:1px solid rgba(106,72,215,.18);
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:1;max-width:840px;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line);}
.page-title{
  font-size:40px;
  line-height:1.25;
  font-weight:700;
  color:var(--brand-ink);
  letter-spacing:.01em;
}
.page-lead{
  margin-top:16px;
  font-size:17px;
  line-height:1.85;
  color:var(--text-2);
  max-width:60ch;
}
.page-hero-actions{
  margin-top:28px;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}
.hero-tags{
  margin-top:24px;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}

/* ---------- 步骤时间线 ---------- */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:64px 1fr;
  column-gap:24px;
  row-gap:24px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:31px;
  top:14px;
  bottom:14px;
  border-left:1px dashed var(--line);
}
.tl-step{
  grid-column:1;
  align-self:start;
  width:32px;
  height:32px;
  margin-left:16px;
  border-radius:50%;
  background:rgba(106,72,215,.10);
  color:var(--brand);
  font-family:var(--font-num);
  font-weight:700;
  font-size:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
  z-index:1;
  border:1px solid rgba(106,72,215,.22);
}
.tl-body{
  grid-column:2;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:24px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.tl-body:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-3);
  border-color:rgba(106,72,215,.3);
}
.tl-title{
  font-size:20px;
  font-weight:600;
  line-height:1.45;
  color:var(--brand-ink);
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.tl-text{
  margin-top:12px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
.tl-points{
  margin-top:14px;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.tl-point{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--text-2);
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 12px;
}
.tl-point svg{width:14px;height:14px;stroke:var(--jade);flex-shrink:0;}

/* ---------- 交替图文 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.split + .split{margin-top:72px;}
.split-media{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  background:var(--bg-alt);
}
.split-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .3s ease-out;
}
.split-media:hover img{transform:scale(1.03);}
.split-body h3{
  font-size:24px;
  line-height:1.45;
  font-weight:700;
  color:var(--brand-ink);
  margin-top:14px;
}
.split-body p{
  margin-top:14px;
  font-size:16px;
  line-height:1.9;
  color:var(--text-2);
}
.check-list{margin-top:18px;display:grid;gap:10px;}
.check-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.check-list svg{
  width:18px;
  height:18px;
  margin-top:4px;
  flex-shrink:0;
  stroke:var(--brand);
}

/* ---------- 资源行列表 ---------- */
.row-list{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.row-item{
  display:flex;
  align-items:center;
  gap:16px;
  padding:18px 24px;
  transition:background .2s ease-out;
}
.row-item + .row-item{border-top:1px dashed var(--line);}
.row-item:hover{background:var(--bg-alt);}
.row-num{
  width:32px;
  height:32px;
  border-radius:50%;
  background:rgba(106,72,215,.10);
  color:var(--brand);
  font-family:var(--font-num);
  font-size:13px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.row-main{flex:1;min-width:0;}
.row-title{
  font-size:16px;
  font-weight:600;
  color:var(--brand-ink);
}
.row-desc{
  margin-top:4px;
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
}
.row-meta{
  font-size:13px;
  color:var(--text-3);
  white-space:nowrap;
  flex-shrink:0;
}

/* ---------- 数据带 ---------- */
.stat-band{
  background:var(--brand-ink-deep);
  color:#fff;
  padding:56px 0;
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-item{
  border-left:2px solid rgba(255,255,255,.12);
  padding-left:20px;
}
.stat-num{
  font-family:var(--font-num);
  font-size:36px;
  font-weight:700;
  line-height:1.2;
  color:var(--accent);
}
.stat-label{
  margin-top:8px;
  font-size:13px;
  line-height:1.7;
  color:rgba(255,255,255,.68);
}

/* ---------- 提示卡 ---------- */
.note-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:4px solid var(--accent);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
}
.note-card h3{
  font-size:19px;
  font-weight:600;
  color:var(--brand-ink);
}
.note-card p{
  margin-top:10px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ---------- FAQ ---------- */
.faq-wrap{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--brand-ink);
  position:relative;
  transition:background .2s ease-out;
}
.faq-q:hover{background:var(--bg-alt);}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  bottom:12px;
  width:3px;
  background:var(--accent);
  opacity:0;
  transition:opacity .2s ease-out;
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-icon{
  width:20px;
  height:20px;
  flex-shrink:0;
  position:relative;
  transition:transform .2s ease-out;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:9px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;transition:opacity .2s ease-out;}
.faq-item.is-open .faq-icon{transform:rotate(90deg);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease-out;
}
.faq-a-inner{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ---------- 尾段 CTA ---------- */
.cta-band{
  background:var(--brand-ink-deep);
  color:#fff;
  padding:80px 0;
  text-align:center;
}
.cta-band h2{
  font-size:30px;
  line-height:1.35;
  font-weight:700;
  color:#fff;
}
.cta-band p{
  margin:16px auto 0;
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.68);
  max-width:56ch;
}
.cta-actions{
  margin-top:32px;
  display:flex;
  gap:12px;
  justify-content:center;
  flex-wrap:wrap;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-ink);
  color:rgba(255,255,255,.68);
  padding:64px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-name{
  font-size:17px;
  font-weight:700;
  color:#fff;
}
.footer-desc{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.68);
}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-links{
  display:grid;
  gap:10px;
}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.68);
}
.footer-links a:hover{
  color:#fff;
  text-decoration:underline;
}
.footer-info{
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.68);
}
.footer-bottom{
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:rgba(255,255,255,.45);
}

/* ---------- 底部固定转化条 ---------- */
.fixed-cta{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:80;
  background:#fff;
  border-top:1px solid var(--line);
  border-radius:16px 16px 0 0;
  box-shadow:0 -8px 24px -12px rgba(43,30,74,.18);
  transform:translateY(110%);
  transition:transform .25s ease-out;
}
.fixed-cta.is-visible{transform:translateY(0);}
.fixed-cta-inner{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.fixed-cta-text{
  font-size:14px;
  color:var(--text-2);
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.fixed-cta-text svg{width:18px;height:18px;stroke:var(--brand);flex-shrink:0;}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:88px;
  z-index:90;
  width:48px;
  height:48px;
  border-radius:50%;
  border:0;
  background:var(--brand);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:var(--shadow-2);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s ease-out,background .2s ease-out;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--accent);}
.to-top svg{width:20px;height:20px;stroke:#fff;}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:100;
  background:#fff;
  display:flex;
  flex-direction:column;
  transform:translateX(100%);
  transition:transform .25s ease-out;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  height:64px;
  padding:0 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--line);
  flex-shrink:0;
}
.drawer-close{
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
}
.drawer-close svg{width:20px;height:20px;stroke:var(--brand-ink);}
.drawer-nav{
  flex:1;
  overflow-y:auto;
  padding:8px 20px;
}
.drawer-link{
  display:flex;
  align-items:center;
  min-height:56px;
  font-size:16px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-link.is-active{
  color:var(--brand);
  font-weight:600;
}
.drawer-foot{
  padding:16px 20px calc(16px + env(safe-area-inset-bottom));
  border-top:1px solid var(--line);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .split{gap:32px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);row-gap:32px;}
}

@media (max-width:900px){
  .section{padding:64px 0;}
  .split{grid-template-columns:1fr;gap:24px;}
  .split + .split{margin-top:56px;}
  .split.reverse .split-media{order:-1;}
}

@media (max-width:767px){
  body{padding-bottom:56px;}
  .container{padding:0 16px;}
  .topbar-inner{padding:0 16px;}
  .topbar-tip{display:none;}
  .main-nav{display:none;}
  .header-actions .btn-primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:64px;padding:0 16px;}
  .site-header.is-scrolled .header-inner{height:60px;}
  .page-hero{padding:36px 0 48px;}
  .page-title{font-size:28px;}
  .page-lead{font-size:16px;}
  .section{padding:48px 0;}
  .section-title{font-size:24px;}
  .cta-band h2{font-size:24px;}
  .cta-band{padding:56px 0;}
  .stat-band{padding:44px 0;}
  .stat-num{font-size:28px;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .site-footer{padding:48px 0 28px;}
  .fixed-cta{transform:translateY(0);border-radius:16px 16px 0 0;}
  .fixed-cta-inner{height:56px;padding:0 16px calc(0px + env(safe-area-inset-bottom));}
  .fixed-cta-text{display:none;}
  .fixed-cta .btn{flex:1;height:40px;}
  .to-top{right:16px;bottom:76px;width:44px;height:44px;}
  .row-item{padding:16px;gap:12px;}
  .row-meta{display:none;}
  .timeline{grid-template-columns:44px 1fr;column-gap:12px;}
  .timeline::before{left:21px;}
  .tl-step{margin-left:6px;}
  .tl-body{padding:20px;}
}

@media (max-width:520px){
  .stat-grid{grid-template-columns:1fr;}
  .page-hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --brand-ink:#2B1E4A;
  --brand-ink-deep:#17102A;
  --brand:#6A48D7;
  --accent:#E8551A;
  --accent-dark:#C9450F;
  --accent-soft:#FFF1E9;
  --jade:#18B892;
  --jade-soft:#E6F8F3;
  --bg:#F6F4F1;
  --bg-alt:#EFEBE6;
  --surface:#FFFFFF;
  --line:#E5E1DA;
  --text:#1A1526;
  --text-2:#56506B;
  --text-3:#8A849B;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(26,21,38,.05);
  --shadow-2:0 8px 24px -12px rgba(43,30,74,.18);
  --shadow-3:0 16px 36px -16px rgba(43,30,74,.28);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
button{font-family:inherit;font-size:inherit}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--accent);text-decoration:underline}
a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* 顶部信息条 */
.topbar{background:var(--brand-ink);color:rgba(255,255,255,.72);font-size:12px;line-height:1.6}
.topbar-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-domain{color:#fff;font-weight:700;letter-spacing:.02em}
.topbar-tip{color:rgba(255,255,255,.68);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.topbar-pill{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.32);color:rgba(255,255,255,.92);
  transition:background .2s ease-out,border-color .2s ease-out;
}
.topbar-pill:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.5);color:#fff;text-decoration:none}
.topbar-anchor{color:rgba(255,255,255,.68)}
.topbar-anchor:hover{color:#fff}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:50;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:var(--shadow-2)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:72px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:18px;height:18px}
.brand-name{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--text-2);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:18px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--text);text-decoration:none}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1);background:var(--accent)}
.nav-cta{margin-left:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--radius-btn);cursor:pointer;color:var(--text);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.nav-toggle svg{width:22px;height:22px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  white-space:nowrap;
}
.btn .btn-arrow{transition:transform .2s ease-out}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff;text-decoration:none}
.btn-primary:hover .btn-arrow{transform:translateX(2px)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:rgba(106,72,215,.08);color:var(--brand);text-decoration:none}
.btn-ghost{border-color:var(--line);background:transparent;color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--accent-soft);color:var(--accent);
}
.badge-jade{background:var(--jade-soft);color:#0E8A6C}

/* 页头 */
.pagehead{background:var(--bg-alt);border-bottom:1px solid var(--line);padding:56px 0 64px}
.pagehead-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-3);margin-bottom:18px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.crumb-sep{color:var(--text-3)}
.pagehead h1{font-size:40px;line-height:1.25;letter-spacing:.01em}
.pagehead-lead{margin-top:16px;font-size:16px;color:var(--text-2);max-width:540px}
.pagehead-actions{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap}
.pagehead-media{
  position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-2);
}
.pagehead-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.pagehead-media::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(43,30,74,.10) 1px, transparent 1px);
  background-size:16px 16px;opacity:.5;pointer-events:none;
}

/* 区块 */
.section{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-head{margin-bottom:32px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.section-head h2{font-size:30px;line-height:1.35}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px}
.section-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.section-link svg{width:14px;height:14px}

/* 对照表 */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  background:var(--surface);box-shadow:var(--shadow-1);
}
.compare-table{width:100%;border-collapse:collapse}
.compare-table thead th{
  background:var(--brand-ink);color:rgba(255,255,255,.92);
  font-size:14px;font-weight:600;text-align:left;padding:16px 22px;letter-spacing:.02em;
}
.compare-table tbody td{
  padding:18px 22px;font-size:15px;line-height:1.8;color:var(--text-2);
  border-top:1px solid var(--line);vertical-align:top;
}
.compare-table tbody tr:first-child td{border-top:none}
.compare-table tbody tr{transition:background .2s ease-out}
.compare-table tbody tr:hover{background:var(--bg-alt)}
.compare-table tbody td:first-child{width:24%;color:var(--text);font-weight:600}
.compare-table tbody td:last-child{color:var(--text-2)}
.cell-note{display:inline-flex;align-items:center;gap:6px;color:var(--jade);font-weight:600;font-size:13px}
.cell-note svg{width:14px;height:14px}

/* 说明卡 */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:rgba(106,72,215,.3)}
.card-icon{
  width:44px;height:44px;border-radius:12px;background:rgba(106,72,215,.08);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand);margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px}
.card h3{font-size:22px;line-height:1.45;font-weight:600}
.card p{margin-top:10px;font-size:15px;color:var(--text-2)}
.step-list{margin-top:18px;display:flex;flex-direction:column;gap:14px}
.step-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.step-num{
  width:26px;height:26px;border-radius:999px;background:rgba(106,72,215,.08);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0;
}
.tick-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.tick-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.tick-list svg{width:16px;height:16px;color:var(--jade);flex-shrink:0;margin-top:5px}

/* 分类速览 */
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.topic-card{
  display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:rgba(106,72,215,.3);text-decoration:none}
.topic-card h3{font-size:17px;font-weight:600;color:var(--text)}
.topic-card p{font-size:14px;color:var(--text-2);flex:1}
.topic-card span.topic-more{font-size:13px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.topic-card:hover span.topic-more{color:var(--accent)}

/* FAQ */
.faq-list{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-1)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:700;color:var(--text);position:relative;transition:background .2s ease-out;
}
.faq-q:hover{background:var(--bg-alt)}
.faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;
  background:var(--accent);opacity:0;transition:opacity .2s ease-out;
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-icon{
  position:relative;width:18px;height:18px;flex-shrink:0;color:var(--brand);
  transition:transform .2s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:8px;height:2px}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px;transition:transform .2s ease-out}
.faq-item.is-open .faq-icon{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease-out}
.faq-a-inner{padding:0 24px 22px 24px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* 尾段 CTA */
.final-cta{
  background-color:var(--brand-ink-deep);
  background-image:linear-gradient(rgba(23,16,42,.93),rgba(23,16,42,.95)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;padding:80px 0;text-align:center;color:rgba(255,255,255,.92);
}
.final-cta h2{color:#fff;font-size:30px;line-height:1.35}
.final-cta p{margin:16px auto 0;max-width:620px;font-size:15px;color:rgba(255,255,255,.68)}
.final-cta-actions{margin-top:32px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.final-cta .btn-ghost{border-color:rgba(255,255,255,.32);color:rgba(255,255,255,.92)}
.final-cta .btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}

/* 页脚 */
.site-footer{background:var(--brand-ink);color:rgba(255,255,255,.68);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.brand-mark svg{stroke:#fff}
.footer-name{font-size:17px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:360px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68)}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-info{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(255,255,255,.45);
}

/* 底部固定转化条 */
.bottom-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  background:var(--surface);border-top:1px solid var(--line);
  box-shadow:0 -8px 24px -14px rgba(43,30,74,.28);
  border-radius:16px 16px 0 0;
  transform:translateY(100%);transition:transform .28s ease-out;
}
.bottom-cta.is-visible{transform:translateY(0)}
.bottom-cta-inner{
  max-width:1200px;margin:0 auto;padding:10px 24px;min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.bottom-cta-text{font-size:14px;color:var(--text-2)}
.bottom-cta-actions{display:flex;align-items:center;gap:12px}
.bottom-cta-icon{
  width:44px;height:44px;border-radius:var(--radius-btn);border:1px solid var(--line);
  display:none;align-items:center;justify-content:center;color:var(--brand);
}
.bottom-cta-icon:hover{border-color:var(--brand);text-decoration:none}
.bottom-cta-icon svg{width:20px;height:20px}

/* 返回顶部 */
.back-to-top{
  position:fixed;right:24px;bottom:96px;z-index:70;
  width:48px;height:48px;border-radius:999px;border:0;cursor:pointer;
  background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;
  transition:opacity .2s ease-out,visibility .2s ease-out,background .2s ease-out;
}
.back-to-top.is-visible{opacity:1;visibility:visible}
.back-to-top:hover{background:var(--brand-ink)}
.back-to-top svg{width:20px;height:20px}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--surface);
  display:none;flex-direction:column;
}
.drawer.is-open{display:flex}
.drawer-head{
  height:64px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:transparent;color:var(--text);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-close svg{width:20px;height:20px}
.drawer-nav{display:flex;flex-direction:column;padding:8px 0;flex:1;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;min-height:56px;padding:0 20px;
  font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);
}
.drawer-nav a:hover{background:var(--bg-alt);color:var(--text);text-decoration:none}
.drawer-nav a.is-active{color:var(--brand);font-weight:700;box-shadow:inset 3px 0 0 var(--accent)}
.drawer-foot{padding:20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}

/* 响应式 */
@media (max-width:1023px){
  .pagehead-grid{grid-template-columns:1fr;gap:32px}
  .pagehead h1{font-size:32px}
  .section{padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .topic-grid{grid-template-columns:1fr 1fr}
  .nav-link{padding:0 8px;font-size:14px}
}
@media (max-width:900px){
  .nav-cta{display:none}
}
@media (max-width:767px){
  .topbar-left{display:none}
  .topbar-inner{justify-content:flex-end}
  .nav-inner{height:64px;padding:0 16px;gap:12px}
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .container{padding:0 16px}
  .pagehead{padding:36px 0 44px}
  .pagehead h1{font-size:28px}
  .pagehead-lead{font-size:15px}
  .section{padding:48px 0}
  .section-head h2{font-size:24px}
  .card-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-desc{max-width:none}
  .compare-table thead{display:none}
  .table-wrap{border:0;background:transparent;box-shadow:none;border-radius:0;overflow:visible}
  .compare-table,.compare-table tbody,.compare-table tr,.compare-table td{display:block;width:100%}
  .compare-table tbody tr{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    margin-bottom:16px;box-shadow:var(--shadow-1);
  }
  .compare-table tbody td{border-top:none;padding:12px 20px}
  .compare-table tbody td:first-child{
    width:auto;font-size:16px;padding-top:18px;
  }
  .compare-table tbody td::before{
    content:attr(data-label);display:block;font-size:12px;font-weight:700;
    color:var(--text-3);letter-spacing:.02em;margin-bottom:4px;
  }
  .compare-table tbody td:first-child::before{content:none}
  .bottom-cta{transform:translateY(0);border-radius:14px 14px 0 0}
  .bottom-cta-inner{min-height:56px;padding:6px 16px 6px 16px}
  .bottom-cta-text{display:none}
  .bottom-cta-actions{margin-left:auto}
  .bottom-cta-icon{display:inline-flex}
  .back-to-top{right:16px;bottom:84px;width:44px;height:44px}
  body{padding-bottom:68px}
  .final-cta{padding:56px 0}
  .final-cta h2{font-size:24px}
}
@media (max-width:519px){
  .pagehead h1{font-size:26px}
  .card{padding:20px}
  .faq-q{padding:18px 20px;font-size:15px}
  .faq-a-inner{padding:0 20px 20px 20px}
  .btn{width:100%;padding:0 18px}
  .pagehead-actions .btn,.final-cta-actions .btn{width:100%}
  .bottom-cta-actions .btn{width:auto}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms;animation-duration:.01ms}
  html{scroll-behavior:auto}
}