/* roulang page: index */
:root{
  --primary:#2B5BD7;
  --primary-dark:#1E44A8;
  --primary-soft:#E8EFFD;
  --accent:#FF7A3D;
  --accent-soft:#FFEDE4;
  --success:#1F9D6B;
  --warn:#E0A21A;
  --danger:#D9534F;
  --bg:#F6F7FB;
  --card:#FFFFFF;
  --surface:#EEF1F7;
  --border:#E3E8F1;
  --line:#EDF0F6;
  --text:#16203A;
  --text-2:#4A5673;
  --text-3:#7C88A3;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow:0 1px 2px rgba(22,32,58,.06), 0 12px 32px -12px rgba(22,32,58,.14);
  --shadow-hover:0 2px 6px rgba(22,32,58,.08), 0 20px 44px -16px rgba(22,32,58,.22);
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.4;color:var(--text)}
h1{font-size:44px;line-height:1.28;letter-spacing:-.01em}
h2{font-size:32px}
h3{font-size:22px}
h4{font-size:18px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--primary-dark)}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:var(--primary-soft);color:var(--primary-dark)}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 40px}

/* ============ 左侧 App Shell ============ */
.app{min-height:100vh}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--border);
  display:flex;flex-direction:column;padding-bottom:20px;z-index:85;
}
.sidebar__brand{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid var(--line);flex:0 0 auto;
}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--primary);
  display:grid;place-items:center;flex:0 0 auto;
  box-shadow:0 8px 18px -8px rgba(43,91,215,.7);
}
.brand-mark svg{width:20px;height:20px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand-text strong{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;letter-spacing:.01em}
.brand-text em{font-size:11.5px;font-style:normal;color:var(--text-3);letter-spacing:.14em;margin-top:2px}

.nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto}
.nav__item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:background .18s ease-out,color .18s ease-out;
}
.nav__item svg{width:20px;height:20px;flex:0 0 auto;stroke-width:1.7}
.nav__item:hover{background:var(--surface);color:var(--primary)}
.nav__item.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.nav__item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.sidebar__cta{
  margin:12px 12px 0;padding:18px;border-radius:var(--radius-card);
  background:var(--primary-soft);flex:0 0 auto;
}
.sidebar__cta p{font-size:13.5px;line-height:1.75;color:var(--primary-dark);margin-bottom:12px}
.sidebar__cta .btn{width:100%}

.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(22,32,58,.45);z-index:80;
}
.topbar{display:none}

.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;background:transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  white-space:nowrap;text-align:center;
  transition:transform .18s ease-out,background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn--lg{height:52px;padding:0 28px;font-size:16px}
.btn--sm{height:32px;padding:0 14px;font-size:13.5px}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 12px 26px -14px rgba(43,91,215,.85)}
.btn--primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(43,91,215,.9)}
.btn--primary:active{transform:translateY(1px)}
.btn--secondary{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn--secondary:hover{background:var(--primary-soft);color:var(--primary);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--primary)}
.btn--ghost:hover{background:var(--primary-soft);color:var(--primary)}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none}
.link-more{
  font-size:15px;font-weight:600;color:var(--primary);white-space:nowrap;
  border-bottom:1px solid transparent;
}
.link-more:hover{color:var(--primary-dark);border-bottom-color:var(--primary-dark)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;font-size:13px;font-weight:600;line-height:1;
  background:var(--primary-soft);color:var(--primary);white-space:nowrap;
}
.badge--accent{background:var(--accent);color:#fff}
.badge--soft{background:var(--surface);color:var(--text-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section--tight{padding:80px 0}
.section--surface{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section__head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:44px;
}
.section__title{font-size:32px}
.section__desc{margin-top:12px;font-size:16px;color:var(--text-2);max-width:760px;line-height:1.85}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--border);padding:88px 0 96px}
.hero::before{
  content:"";position:absolute;right:-140px;top:-180px;width:580px;height:580px;
  background:rgba(43,91,215,.05);border-radius:140px;transform:rotate(18deg);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:0;bottom:0;width:46%;height:1px;
  background:repeating-linear-gradient(90deg,var(--border) 0 8px,transparent 8px 16px);
  pointer-events:none;
}
.hero__inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero__title{font-size:44px;margin-top:18px}
.hero__sub{margin-top:20px;font-size:17px;line-height:1.9;color:var(--text-2);max-width:580px}
.hero__actions{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.hero__trust{margin-top:38px;display:flex;gap:28px;flex-wrap:wrap}
.hero__trust li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2)}
.hero__trust li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto}
.hero__visual{position:relative}
.hero__visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:18px;border:1px solid var(--border);box-shadow:var(--shadow);
}
.hero__float{
  position:absolute;left:-18px;bottom:26px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow);padding:14px 18px;max-width:220px;
}
.hero__float strong{display:block;font-size:22px;color:var(--primary);line-height:1.2}
.hero__float span{font-size:13px;color:var(--text-3)}

/* ============ 卖点 ============ */
.feature-grid{display:grid;grid-template-columns:5fr 4fr 3fr;gap:24px;align-items:start}
.feature-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(43,91,215,.32)}
.feature-card__icon{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;margin-bottom:20px}
.feature-card__icon svg{width:23px;height:23px;stroke-width:1.8}
.feature-card--a .feature-card__icon{background:var(--primary-soft);color:var(--primary)}
.feature-card--b .feature-card__icon{background:var(--accent-soft);color:var(--accent)}
.feature-card--c .feature-card__icon{background:var(--surface);color:var(--text-2)}
.feature-card h3{font-size:20px}
.feature-card p{margin-top:12px;font-size:15.5px;color:var(--text-2);line-height:1.9}
.feature-card--b{margin-top:0}
.feature-card--c{margin-top:56px}
.feature-card__meta{margin-top:20px;display:flex;gap:8px;flex-wrap:wrap}

/* ============ 步骤 ============ */
.steps-layout{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.step-list{position:relative}
.step{position:relative;padding:0 0 34px 58px}
.step:last-child{padding-bottom:0}
.step::before{
  content:attr(data-num);position:absolute;left:0;top:2px;
  width:38px;height:38px;border-radius:12px;background:var(--primary-soft);
  color:var(--primary);font-size:14px;font-weight:700;
  display:grid;place-items:center;
}
.step:not(:last-child)::after{
  content:"";position:absolute;left:18.5px;top:48px;bottom:8px;width:1px;background:var(--line);
}
.step h3{font-size:19px}
.step p{margin-top:8px;font-size:15.5px;color:var(--text-2);line-height:1.9}
.steps-media img{
  width:100%;aspect-ratio:5/4;object-fit:cover;
  border-radius:18px;border:1px solid var(--border);box-shadow:var(--shadow);
}

/* ============ 分类 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cat-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow);color:inherit;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(43,91,215,.32);color:inherit}
.cat-card__thumb{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--surface)}
.cat-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease-out}
.cat-card:hover .cat-card__thumb img{transform:translateY(-2px)}
.cat-card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.cat-card__body h3{font-size:18px}
.cat-card__body p{font-size:14.5px;color:var(--text-2);line-height:1.85}
.cat-card__more{margin-top:auto;font-size:14px;font-weight:600;color:var(--primary)}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(43,91,215,.32)}
.news-card__link{display:flex;flex-direction:column;height:100%;color:inherit}
.news-card__link:hover{color:inherit}
.news-card__thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--surface)}
.news-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease-out}
.news-card:hover .news-card__thumb img{transform:scale(1.03)}
.news-card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.news-card__title{font-size:18px;line-height:1.55}
.news-card__desc{font-size:14.5px;color:var(--text-2);line-height:1.8}
.news-card__time{font-size:13px;color:var(--text-3);margin-top:auto}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.empty-state{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:56px 28px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state__icon{
  width:48px;height:48px;border-radius:14px;background:#fff;border:1px solid var(--border);
  display:grid;place-items:center;color:var(--text-3);font-size:22px;line-height:1;
}
.empty-state p{font-size:15px;color:var(--text-2)}

/* ============ 数据与口碑 ============ */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow);margin-bottom:32px;
}
.stat__num{font-size:34px;font-weight:700;color:var(--primary);line-height:1.2;letter-spacing:-.01em}
.stat__num span{font-size:16px;font-weight:600;color:var(--primary);margin-left:2px}
.stat__label{margin-top:8px;font-size:14px;color:var(--text-2)}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:16px;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.quote-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.quote-card__text{font-size:15.5px;color:var(--text-2);line-height:1.9}
.quote-card__foot{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--primary-soft);color:var(--primary);
  display:grid;place-items:center;font-size:15px;font-weight:700;flex:0 0 auto;
}
.quote-card__who{display:flex;flex-direction:column;line-height:1.4;min-width:0}
.quote-card__who strong{font-size:14.5px}
.quote-card__who span{font-size:13px;color:var(--text-3)}
.proof-strip{
  margin-top:32px;display:flex;flex-wrap:wrap;gap:12px;justify-content:center;
  padding:20px;border:1px dashed var(--border);border-radius:var(--radius-card);background:#fff;
}
.proof-strip span{font-size:13.5px;color:var(--text-3);padding:0 14px;position:relative}
.proof-strip span:not(:last-child)::after{
  content:"";position:absolute;right:-6px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--border);
}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;
  transition:border-color .18s ease-out;
}
.faq-item[open]{border-color:rgba(43,91,215,.32)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:56px;padding:14px 24px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--primary);line-height:1;
  transition:transform .18s ease-out;flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item__body{padding:0 24px 20px;font-size:15.5px;line-height:1.85;color:var(--text-2)}

/* ============ 底部 CTA ============ */
.cta-band{
  background:var(--primary-soft);border-radius:var(--radius-card);
  padding:48px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:28px}
.cta-band p{margin-top:10px;font-size:16px;color:var(--text-2);max-width:620px}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:64px 0 0;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:10px}
.footer-text{font-size:14.5px;color:var(--text-2);line-height:1.85;max-width:340px}
.footer__title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer__list li+li{margin-top:10px}
.footer__list a{font-size:14.5px;color:var(--text-2)}
.footer__list a:hover{color:var(--primary)}
.footer__list li{font-size:14.5px;color:var(--text-2)}
.footer__bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--text-3);
}
.footer__bottom a{font-size:13.5px;color:var(--text-3)}
.footer__bottom a:hover{color:var(--primary)}

/* ============ 移动端底栏 ============ */
.mobile-bar{display:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar-w:76px}
  .brand-text{display:none}
  .sidebar__brand{justify-content:center;padding:0}
  .nav{padding:16px 10px}
  .nav__item{justify-content:center;padding:0;gap:0}
  .nav__item span{display:none}
  .sidebar__cta{display:none}
}
@media (max-width:1023px){
  .container{padding:0 28px}
  .sidebar{
    width:280px;transform:translateX(-100%);
    transition:transform .18s ease-out;box-shadow:var(--shadow);
  }
  .sidebar.is-open{transform:translateX(0)}
  .brand-text{display:flex}
  .sidebar__brand{justify-content:flex-start;padding:0 18px}
  .nav{padding:16px 12px}
  .nav__item{justify-content:flex-start;padding:0 14px;height:48px;gap:12px}
  .nav__item span{display:inline}
  .sidebar__cta{display:block}
  .app-main{margin-left:0;padding-top:56px}
  .topbar{
    display:flex;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
    align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
    background:#fff;border-bottom:1px solid var(--border);
  }
  .topbar__brand{display:flex;align-items:center;gap:9px;color:var(--text);font-size:15px;font-weight:700}
  .topbar__brand:hover{color:var(--text)}
  .topbar__brand .brand-mark{width:30px;height:30px;border-radius:9px}
  .topbar__brand .brand-mark svg{width:17px;height:17px}
  .topbar__menu{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
    background:#fff;display:grid;place-items:center;cursor:pointer;
    transition:background .18s ease-out,border-color .18s ease-out;
  }
  .topbar__menu:hover{background:var(--surface);border-color:rgba(43,91,215,.32)}
  .topbar__menu svg{width:20px;height:20px;color:var(--text-2)}
  .drawer-mask.is-open{display:block}

  .hero{padding:64px 0 72px}
  .hero__inner{grid-template-columns:1fr;gap:40px}
  .hero__title{font-size:34px}
  .hero::before{width:420px;height:420px;right:-160px;top:-160px}
  .hero__float{left:auto;right:18px}

  .feature-grid{grid-template-columns:1fr 1fr}
  .feature-card--c{margin-top:0;grid-column:1 / -1}
  .cat-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .stat-bar{grid-template-columns:1fr 1fr;gap:28px;padding:28px}
  .quote-grid{grid-template-columns:1fr 1fr}
  .steps-layout{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:36px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .section__head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .section__title{font-size:24px}
  .section__desc{font-size:15px}
  h1{font-size:30px}
  .hero{padding:44px 0 56px}
  .hero__title{font-size:29px}
  .hero__sub{font-size:15.5px}
  .hero__actions .btn{flex:1 1 auto}
  .hero__trust{gap:16px 20px}
  .hero__trust li{font-size:13.5px}
  .hero__float{display:none}
  .feature-grid,.cat-grid,.news-grid,.quote-grid{grid-template-columns:1fr}
  .stat-bar{grid-template-columns:1fr 1fr;gap:24px;padding:24px}
  .stat__num{font-size:28px}
  .faq-item summary{font-size:16px;padding:14px 18px}
  .faq-item__body{padding:0 18px 18px;font-size:15px}
  .cta-band{padding:28px;flex-direction:column;align-items:flex-start;gap:22px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer__bottom{flex-direction:column;gap:8px;margin-top:32px}
  .site-footer{padding:48px 0 96px}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;height:64px;z-index:90;
    align-items:center;justify-content:space-between;gap:12px;padding:0 14px;
    background:#fff;border-top:1px solid var(--border);
    box-shadow:0 -8px 24px -14px rgba(22,32,58,.3);
  }
  .mobile-bar__text{
    font-size:13.5px;color:var(--text-2);flex:1 1 auto;min-width:0;
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  }
  .mobile-bar__close{
    width:24px;height:24px;border:none;background:transparent;color:var(--text-3);
    font-size:20px;line-height:1;cursor:pointer;display:grid;place-items:center;flex:0 0 auto;
  }
  .mobile-bar__close:hover{color:var(--text)}
}
@media (max-width:520px){
  .hero__title{font-size:26px}
  .section__title{font-size:22px}
  .stat-bar{grid-template-columns:1fr 1fr}
  .proof-strip{flex-direction:column;align-items:flex-start;gap:8px}
  .proof-strip span{padding:0}
  .proof-strip span:not(:last-child)::after{display:none}
}

/* roulang page: category1 */
:root{
  --primary:#2B5BD7;
  --primary-dark:#1E44A8;
  --primary-soft:#E8EFFD;
  --accent:#FF7A3D;
  --success:#1F9D6B;
  --warn:#E0A21A;
  --danger:#D9534F;
  --bg:#F6F7FB;
  --card:#FFFFFF;
  --surface:#EEF1F7;
  --border:#E3E8F1;
  --line:#EDF0F6;
  --text:#16203A;
  --text-2:#4A5673;
  --text-3:#7C88A3;
  --white:#FFFFFF;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow:0 1px 2px rgba(22,32,58,.06), 0 12px 32px -12px rgba(22,32,58,.14);
  --shadow-hover:0 2px 6px rgba(22,32,58,.09), 0 20px 44px -16px rgba(22,32,58,.22);
  --t:180ms ease-out;
  --sidebar-w:264px;
  --topbar-h:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);object-fit:cover;}
a{color:var(--primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.4;}
h1{font-size:44px;letter-spacing:-.5px;}
h2{font-size:32px;}
h3{font-size:22px;font-weight:600;}
h4{font-size:18px;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{max-width:1180px;margin:0 auto;padding:0 40px;}

/* ---------- 侧栏导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--card);border-right:1px solid var(--border);
  display:flex;flex-direction:column;padding:0 16px 24px;
  overflow-y:auto;z-index:80;
}
.sidebar__brand{
  display:flex;align-items:center;gap:10px;height:72px;flex:0 0 72px;
  padding-left:6px;font-size:16px;font-weight:700;color:var(--text);
}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  background:linear-gradient(135deg,var(--primary),#4B7BEE);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px -6px rgba(43,91,215,.6);
}
.brand-mark svg{width:19px;height:19px;}
.sidebar__group{margin-top:14px;}
.sidebar__label{
  font-size:12px;letter-spacing:.08em;color:var(--text-3);
  padding:0 14px;margin-bottom:8px;
}
.sidebar__nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);transition:background var(--t),color var(--t);
}
.nav-item svg{width:20px;height:20px;flex:0 0 20px;stroke-width:1.8;}
.nav-item:hover{background:var(--surface);color:var(--primary);}
.nav-item.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:3px;background:var(--primary);
}
.sidebar__cta{
  margin-top:auto;padding:18px;border-radius:var(--radius-card);
  background:var(--primary-soft);border:1px solid #D9E4FB;
}
.sidebar__cta strong{display:block;font-size:15px;color:var(--text);margin-bottom:6px;}
.sidebar__cta p{font-size:13px;line-height:1.7;color:var(--text-2);margin:0 0 14px;}
.sidebar__cta .btn{width:100%;}

/* ---------- 顶部栏（移动/平板） ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:var(--topbar-h);z-index:90;
  display:none;align-items:center;justify-content:space-between;
  padding:0 18px;background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--border);
  backdrop-filter:saturate(150%) blur(8px);
}
.topbar__brand{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;color:var(--text);}
.topbar__brand .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:9px;}
.topbar__menu{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;color:var(--text-2);border:1px solid var(--border);background:var(--card);
  transition:background var(--t),color var(--t);
}
.topbar__menu:hover{background:var(--surface);color:var(--primary);}
.topbar__menu svg{width:20px;height:20px;}
.sidebar-mask{
  position:fixed;inset:0;background:rgba(22,32,58,.45);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:75;
}
.sidebar-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 主区域 ---------- */
.site-main{display:block;}

/* 面包屑 */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--card);}
.crumb-bar .container{display:flex;align-items:center;min-height:44px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{color:#C3CBD9;}
.crumb .current{color:var(--text-3);}

/* Hero */
.hub-hero{
  position:relative;overflow:hidden;
  background-color:#F2F5FD;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--border);
}
.hub-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,247,251,.97) 0%,rgba(246,247,251,.94) 46%,rgba(232,239,253,.72) 100%);
}
.hub-hero::after{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(43,91,215,.10),rgba(43,91,215,0) 70%);
  pointer-events:none;
}
.hub-hero .container{position:relative;z-index:1;padding-top:72px;padding-bottom:76px;}
.hub-hero__inner{max-width:760px;}
.hub-hero__eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:999px;background:var(--card);border:1px solid var(--border);
  font-size:13px;color:var(--primary);font-weight:600;margin-bottom:20px;
}
.hub-hero__eyebrow::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);
}
.hub-hero h1{margin-bottom:20px;}
.hub-hero__lead{font-size:17px;line-height:1.95;color:var(--text-2);margin:0 0 28px;max-width:700px;}
.hub-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:13px;color:var(--primary);background:var(--primary-soft);
}
.tag--line{background:var(--card);border:1px solid var(--border);color:var(--text-2);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  border:1px solid transparent;white-space:nowrap;
}
.btn svg{width:17px;height:17px;}
.btn--primary{background:var(--primary);color:var(--white);box-shadow:0 8px 20px -10px rgba(43,91,215,.7);}
.btn--primary:hover{background:var(--primary-dark);color:var(--white);transform:translateY(-1px);}
.btn--primary:active{transform:translateY(1px);}
.btn--ghost{background:var(--card);color:var(--primary);border-color:#CBD9F6;}
.btn--ghost:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-1px);}
.btn--sm{height:36px;padding:0 16px;font-size:14px;}
.btn--lg{height:52px;padding:0 28px;font-size:16px;}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* 通用板块 */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--text-2);margin:0;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}

/* 图文交替 */
.split{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;align-items:center;
  padding:52px 0;border-top:1px solid var(--line);
}
.split:first-of-type{border-top:0;padding-top:0;}
.split__figure{position:relative;}
.split__figure img{
  width:100%;aspect-ratio:16/11;border:1px solid var(--border);box-shadow:var(--shadow);
}
.split__index{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;background:var(--primary-soft);
  color:var(--primary);font-weight:700;font-size:15px;letter-spacing:.04em;margin-bottom:18px;
}
.split__body h3{margin-bottom:14px;}
.split__body p{color:var(--text-2);margin:0 0 18px;}
.split--reverse .split__figure{order:2;}
.split-list{list-style:none;display:flex;flex-direction:column;gap:10px;}
.split-list li{
  position:relative;padding-left:26px;color:var(--text-2);font-size:15px;line-height:1.8;
}
.split-list li::before{
  content:"";position:absolute;left:6px;top:12px;width:7px;height:7px;border-radius:50%;
  background:var(--primary);opacity:.85;
}

/* 数据条 */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border:1px solid var(--border);border-radius:var(--radius-card);background:var(--card);
  box-shadow:var(--shadow);overflow:hidden;
}
.stat{padding:26px 24px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;}
.stat__num{font-size:28px;font-weight:700;color:var(--primary);line-height:1.2;}
.stat__label{font-size:14px;color:var(--text-3);margin-top:6px;}

/* 对照表 */
.table-wrap{
  border:1px solid var(--border);border-radius:var(--radius-card);
  background:var(--card);box-shadow:var(--shadow);overflow:hidden;
}
.compare-table{width:100%;border-collapse:collapse;font-size:15px;}
.compare-table caption{
  text-align:left;padding:22px 26px 4px;color:var(--text-3);font-size:14px;
}
.compare-table th,.compare-table td{
  padding:16px 26px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--line);line-height:1.8;
}
.compare-table thead th{
  background:#F3F5FA;color:var(--text-2);font-weight:600;font-size:14px;
  letter-spacing:.02em;border-bottom:1px solid var(--border);
}
.compare-table tbody tr:hover{background:#FAFBFE;}
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table td:first-child{color:var(--text);font-weight:600;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:860px;}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:rgba(43,91,215,.3);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 22px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-size:18px;font-weight:600;line-height:1;
  transition:transform var(--t);
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item__body{padding:0 22px 22px;color:var(--text-2);font-size:15.5px;line-height:1.85;}
.faq-item__body p:last-child{margin-bottom:0;}

/* CTA */
.cta-band{
  background:var(--primary-soft);border:1px solid #D9E4FB;border-radius:var(--radius-card);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:28px;margin-bottom:10px;}
.cta-band p{margin:0;color:var(--text-2);max-width:620px;}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{background:var(--card);border-top:1px solid var(--border);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px;color:var(--text);}
.footer-text{font-size:14px;line-height:1.85;color:var(--text-2);margin:0;max-width:320px;}
.footer__title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer__list{list-style:none;display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--text-2);}
.footer__list a{color:var(--text-2);}
.footer__list a:hover{color:var(--primary);}
.footer__bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:20px 0;font-size:13px;color:var(--text-3);
}
.footer__bottom a{color:var(--text-3);}
.footer__bottom a:hover{color:var(--primary);}

/* 移动端底部转化条 */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;height:64px;z-index:85;
  display:none;align-items:center;justify-content:space-between;gap:14px;
  padding:0 16px;background:var(--card);border-top:1px solid var(--border);
  box-shadow:0 -8px 24px -14px rgba(22,32,58,.3);
}
.mobile-cta__text{font-size:14px;color:var(--text-2);line-height:1.4;}
.mobile-cta__close{
  width:24px;height:24px;flex:0 0 24px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-3);border-radius:8px;
}
.mobile-cta__close:hover{background:var(--surface);color:var(--text);}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--sidebar-w);}
  .topbar{display:none;}
  .sidebar-mask{display:none;}
  .site-main{padding-bottom:0;}
}
@media (max-width:1023.98px){
  .topbar{display:flex;}
  .sidebar{transform:translateX(-100%);transition:transform var(--t);box-shadow:var(--shadow-hover);}
  .sidebar.is-open{transform:translateX(0);}
  body{padding-top:var(--topbar-h);padding-bottom:84px;}
  .mobile-cta{display:flex;}
  .section{padding:64px 0;}
  .section--tight{padding:56px 0;}
  .hub-hero .container{padding-top:52px;padding-bottom:56px;}
  h1{font-size:34px;}
  h2{font-size:26px;}
  .split{grid-template-columns:1fr;gap:28px;padding:40px 0;}
  .split--reverse .split__figure{order:0;}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat:nth-child(3){border-left:0;}
  .stat{border-top:1px solid var(--line);}
  .stat:nth-child(-n+2){border-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:32px;}
}
@media (max-width:768px){
  .container{padding:0 28px;}
  .section{padding:56px 0;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .hub-hero__lead{font-size:16px;}
  .compare-table th,.compare-table td{padding:14px 16px;}
  .compare-table caption{padding:18px 16px 2px;}
  .table-wrap{overflow-x:auto;}
  .compare-table{min-width:560px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band{padding:28px;flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .stat-strip{grid-template-columns:1fr;}
  .stat{border-left:0;border-top:1px solid var(--line);}
  .stat:first-child{border-top:0;}
  .footer-grid{grid-template-columns:1fr;}
  .hub-hero__actions .btn{width:100%;}
  .faq-item summary{font-size:16px;padding:12px 18px;}
  .faq-item__body{padding:0 18px 18px;}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --primary:#2B5BD7;
  --primary-dark:#1E44A8;
  --primary-soft:#E8EFFD;
  --accent:#FF7A3D;
  --ok:#1F9D6B;
  --warn:#E0A21A;
  --err:#D9534F;
  --bg:#F6F7FB;
  --card:#FFFFFF;
  --sub:#EEF1F7;
  --border:#E3E8F1;
  --line:#EDF0F6;
  --text:#16203A;
  --text-2:#4A5673;
  --text-3:#7C88A3;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow:0 1px 2px rgba(22,32,58,.06),0 12px 32px -12px rgba(22,32,58,.14);
  --shadow-hover:0 2px 4px rgba(22,32,58,.08),0 18px 40px -14px rgba(22,32,58,.2);
  --t:180ms ease-out;
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text)}
h1{font-size:36px}
h2{font-size:24px}
h3{font-size:19px}
h4{font-size:17px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--primary);text-decoration:none;transition:color var(--t),background var(--t),border-color var(--t)}
a:hover{color:var(--accent)}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{max-width:1180px;margin:0 auto;padding:0 40px}

/* ============ 品牌标记 ============ */
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -8px rgba(43,91,215,.9);
}
.brand-mark svg{width:19px;height:19px}

/* ============ 顶部栏（移动端） ============ */
.topbar{
  display:none;align-items:center;justify-content:space-between;
  height:60px;padding:0 18px;background:#fff;
  border-bottom:1px solid var(--border);
  position:fixed;top:0;left:0;right:0;z-index:70;
}
.topbar__brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:16px}
.topbar__brand:hover{color:var(--text)}
.topbar__menu{
  width:42px;height:42px;border:1px solid var(--border);background:#fff;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);
}
.topbar__menu svg{width:22px;height:22px}
.topbar__menu:hover{background:var(--sub);color:var(--primary)}

/* ============ 抽屉遮罩 ============ */
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(22,32,58,.45);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:65;
}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}

/* ============ 左侧导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--border);
  display:flex;flex-direction:column;gap:8px;
  padding:0 16px 22px;overflow-y:auto;z-index:68;
  transform:translateX(-100%);transition:transform var(--t);
}
body.drawer-open .sidebar{transform:translateX(0)}
.sidebar__brand{
  display:flex;align-items:center;gap:10px;height:72px;color:var(--text);
  font-weight:700;font-size:16px;flex:0 0 72px;
}
.sidebar__brand:hover{color:var(--primary)}
.sidebar__nav{display:flex;flex-direction:column;gap:6px;margin-top:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;line-height:1;
}
.nav-item svg{width:20px;height:20px;flex:0 0 20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:var(--sub);color:var(--primary)}
.nav-item.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.nav-item.is-active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;background:var(--primary)}
.sidebar__cta{
  margin-top:auto;background:var(--primary-soft);border-radius:var(--r-card);
  padding:18px 16px;display:flex;flex-direction:column;gap:12px;
}
.sidebar__cta p{font-size:14px;line-height:1.7;color:var(--text-2)}

/* ============ 主区域 ============ */
.main-wrap{min-height:100vh;display:flex;flex-direction:column}
.main{flex:1;padding-top:8px;padding-bottom:72px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px -14px rgba(43,91,215,.95)}
.btn-primary:hover{background:var(--primary-dark);color:#fff}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#f2672a;color:#fff}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}
.btn-text{height:auto;padding:0;background:none;color:var(--primary);font-weight:600}
.btn-text span{border-bottom:1px solid currentColor;padding-bottom:2px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn[disabled]{opacity:.4;cursor:not-allowed}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:600;line-height:1;
}
.badge-accent{background:var(--accent);color:#fff}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:#fff}
.crumb{display:flex;align-items:center;gap:8px;height:40px;font-size:13px;color:var(--text-3);overflow:hidden;white-space:nowrap}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--text-3)}
.crumb .current{color:var(--text-3);text-overflow:ellipsis;overflow:hidden}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:32px;align-items:start;padding-top:32px;
}
.article-main{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:44px 44px 36px;min-width:0;
}
.article-head{max-width:760px}
.article-main h1{font-size:36px;line-height:1.4;letter-spacing:.2px}
.meta-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:20px;padding-bottom:22px;border-bottom:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.meta-bar .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);display:inline-block}
.meta-bar a.badge{color:var(--primary)}
.meta-bar a.badge:hover{background:var(--primary);color:#fff}
.article-content{max-width:760px;margin-top:26px;font-size:16px;line-height:1.92;color:var(--text-2)}
.article-content p{margin:1em 0}
.article-content h2{
  position:relative;font-size:24px;color:var(--text);
  margin:2em 0 .8em;padding-left:16px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--primary);
}
.article-content h3{font-size:19px;color:var(--text);margin:1.6em 0 .6em}
.article-content h4{font-size:17px;color:var(--text);margin:1.4em 0 .5em}
.article-content img{margin:1.4em auto;border-radius:var(--r-img)}
.article-content figure{margin:1.4em 0}
.article-content figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.article-content blockquote{
  margin:1.5em 0;padding:20px;background:var(--primary-soft);
  border-left:4px solid var(--primary);border-radius:0 12px 12px 0;color:var(--text);
}
.article-content blockquote p{margin:.4em 0}
.article-content ul,.article-content ol{margin:1em 0;padding-left:24px;line-height:1.9}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin:.35em 0}
.article-content table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px}
.article-content th{background:var(--sub);font-weight:600;text-align:left;color:var(--text)}
.article-content th,.article-content td{border:1px solid var(--border);padding:12px}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--accent)}

/* ============ 空态 ============ */
.empty-state{
  margin-top:28px;background:var(--sub);border:1px solid var(--border);
  border-radius:var(--r-card);padding:40px 28px;text-align:center;
}
.empty-state svg{width:44px;height:44px;stroke:var(--text-3);fill:none;stroke-width:1.5;margin:0 auto 14px}
.empty-state p{color:var(--text-2);margin-bottom:18px}

/* ============ 文章底部 ============ */
.article-foot{max-width:760px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.foot-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:12px}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px}
.pager a{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;
  border:1px solid var(--border);border-radius:var(--r-card);background:#fff;
  color:var(--text);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.pager a:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:rgba(43,91,215,.35);color:var(--text)}
.pager span{font-size:13px;color:var(--text-3)}
.pager strong{font-size:16px;font-weight:600}
.pager .align-end{text-align:right;align-items:flex-end}
.back-row{margin-top:24px}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:24px}
.side-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:22px;
}
.side-card__title{font-size:15px;font-weight:700;color:var(--text);padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:6px}
.side-list li a,.side-list li span{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:56px;padding:10px 12px;border-radius:10px;color:var(--text-2);font-size:14px;
}
.side-list li a:hover{background:var(--sub);color:var(--primary)}
.side-list li+li{border-top:1px solid var(--line)}
.side-list .arrow{color:var(--text-3);font-size:14px}
.side-related a{display:block;padding:14px 12px;border-radius:10px;color:var(--text-2)}
.side-related a:hover{background:var(--sub);color:var(--primary)}
.side-related strong{display:block;font-size:14px;font-weight:600;color:var(--text);line-height:1.6}
.side-related a:hover strong{color:var(--primary)}
.side-related time{font-size:12px;color:var(--text-3)}
.side-related li+li{border-top:1px solid var(--line)}

/* ============ 相关推荐 ============ */
.related{padding-top:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:24px}
.section-head p{font-size:14px;color:var(--text-3);margin-top:6px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(43,91,215,.35)}
.card__cover{aspect-ratio:16/9;background:var(--sub);overflow:hidden}
.card__cover img{width:100%;height:100%;object-fit:cover;border-radius:0}
.card__body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__body h3{font-size:17px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__body p{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}

/* ============ CTA 区块 ============ */
.cta-band{
  margin-top:72px;background:var(--primary-soft);border:1px solid rgba(43,91,215,.16);
  border-radius:var(--r-card);padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:24px;margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:620px}
.cta-band .btn{flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--border);margin-top:80px;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-size:16px;color:var(--text)}
.footer-text{font-size:14px;line-height:1.8;color:var(--text-2);max-width:320px}
.footer__title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px}
.footer__list li{margin-bottom:10px;font-size:14px;color:var(--text-2)}
.footer__list a{color:var(--text-2)}
.footer__list a:hover{color:var(--primary)}
.footer__bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer__bottom a{color:var(--text-2)}

/* ============ 移动端底部转化条 ============ */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;height:64px;z-index:80;
  background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 24px -16px rgba(22,32,58,.5);
  align-items:center;gap:12px;padding:0 14px;
}
.mobile-cta span{flex:1;font-size:14px;color:var(--text-2);line-height:1.4}
.mobile-cta__close{
  width:28px;height:28px;border:none;background:var(--sub);border-radius:50%;
  color:var(--text-3);font-size:16px;line-height:1;
}

/* ============ 响应式 ============ */
@media (min-width:1024px){
  .sidebar{transform:none}
  .main-wrap{margin-left:var(--sidebar-w)}
  .topbar{display:none}
  .drawer-mask{display:none}
}
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:26px}
  .card-grid{gap:20px}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .drawer-mask{display:block}
  .main-wrap{padding-top:60px}
  .container{padding:0 28px}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .main{padding-bottom:84px}
  .article-main{padding:26px 18px 24px;border-radius:12px}
  .article-main h1{font-size:26px}
  .article-content{font-size:16px}
  .article-content h2{font-size:20px}
  .article-content h3{font-size:17px}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap}
  .pager{grid-template-columns:1fr}
  .pager .align-end{text-align:left;align-items:flex-start}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 22px;border-radius:12px}
  .cta-band h2{font-size:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding:40px 0 88px}
  .mobile-cta{display:flex}
  .related{padding-top:48px}
}
@media (max-width:520px){
  .crumb{font-size:12px}
  .meta-bar{font-size:12px;gap:8px}
  .badge{height:22px;font-size:12px;padding:0 10px}
  .btn{width:100%}
  .btn-sm,.mobile-cta .btn{width:auto}
  .cta-band .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --primary:#2B5BD7;
  --primary-dark:#1E44A8;
  --primary-soft:#E8EFFD;
  --accent:#FF7A3D;
  --ok:#1F9D6B;
  --warn:#E0A21A;
  --err:#D9534F;
  --bg:#F6F7FB;
  --card:#FFFFFF;
  --sub:#EEF1F7;
  --border:#E3E8F1;
  --line:#EDF0F6;
  --text:#16203A;
  --text-2:#4A5673;
  --text-3:#7C88A3;
  --white:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(22,32,58,.06),0 12px 32px -12px rgba(22,32,58,.14);
  --shadow-hover:0 2px 4px rgba(22,32,58,.08),0 18px 42px -14px rgba(22,32,58,.2);
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--primary);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--primary-dark)}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--text)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 40px}

/* ---------- 侧栏 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--card);border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:60;
  transition:width .18s ease-out,transform .18s ease-out;
}
.sidebar__head{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid var(--line);flex:0 0 auto;
}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;display:block}
.sidebar__brand-text{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden}
.sidebar__nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;line-height:1.4;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-item:hover{background:var(--sub);color:var(--primary)}
.nav-item.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.nav-icon{width:20px;height:20px;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center}
.nav-icon svg{width:20px;height:20px;display:block}
.nav-label{white-space:nowrap;overflow:hidden}
.sidebar__cta{
  margin:12px;padding:18px;border-radius:var(--r-card);
  background:var(--primary-soft);flex:0 0 auto;
}
.sidebar__cta h3{font-size:15px;margin-bottom:6px}
.sidebar__cta p{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:12px}

/* ---------- 顶部栏（移动/平板） ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--card);border-bottom:1px solid var(--border);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:70;
}
.topbar__brand{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;color:var(--text)}
.topbar__menu{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:var(--card);color:var(--text-2);display:inline-flex;
  align-items:center;justify-content:center;transition:background .18s ease-out,color .18s ease-out;
}
.topbar__menu:hover{background:var(--sub);color:var(--primary)}
.topbar__menu svg{width:20px;height:20px}
.scrim{
  display:none;position:fixed;inset:0;background:rgba(22,32,58,.45);z-index:55;
}
.scrim.is-open{display:block}

/* ---------- 主区域 ---------- */
.main{
  margin-left:var(--sidebar-w);min-height:100vh;
  display:flex;flex-direction:column;
  transition:margin-left .18s ease-out;
}
.crumb-bar{height:40px;display:flex;align-items:center;background:var(--card);border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);width:100%}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:#C3CBDB}
.crumb .current{color:var(--text-3)}

section{padding:96px 0}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-tag{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:600;line-height:1;margin-bottom:14px;
}
.sec-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
h2.sec-title{font-size:32px;margin-bottom:12px}
.sec-sub{font-size:16px;color:var(--text-2);line-height:1.9}

/* ---------- Hero ---------- */
.hero{
  position:relative;background:var(--card);overflow:hidden;
  padding:80px 0 88px;border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.16;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:520px;height:520px;
  background:linear-gradient(135deg,rgba(43,91,215,.06),rgba(255,122,61,.05));
  transform:rotate(12deg);border-radius:80px;pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.hero h1{font-size:44px;line-height:1.28;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-lead{font-size:17px;color:var(--text-2);max-width:600px;margin-bottom:28px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px -10px rgba(43,91,215,.75)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-secondary{background:var(--card);color:var(--primary);border-color:rgba(43,91,215,.45)}
.btn-secondary:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--primary)}
.btn-ghost:hover{background:var(--primary-soft)}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-sm{height:32px;padding:0 14px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none}
.trust-row{display:flex;flex-wrap:wrap;gap:22px}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.trust-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);flex:0 0 auto}
.trust-item:nth-child(2) .trust-dot{background:var(--accent)}
.trust-item:nth-child(3) .trust-dot{background:var(--ok)}

.hero-visual{position:relative}
.hero-visual .frame{
  background:var(--card);border:1px solid var(--border);border-radius:18px;
  padding:16px;box-shadow:var(--shadow);
}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-visual .badge-float{
  position:absolute;left:-14px;bottom:26px;background:var(--card);
  border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:14px 18px;min-width:190px;
}
.hero-visual .badge-float strong{display:block;font-size:22px;color:var(--primary);line-height:1.2}
.hero-visual .badge-float span{font-size:13px;color:var(--text-3)}
.wave-line{position:absolute;left:0;right:0;bottom:0;height:48px;opacity:.5;pointer-events:none}

/* ---------- 对照双卡 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.panel{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:28px;display:flex;flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.panel:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(43,91,215,.3)}
.panel--risk{background:#FCFCFE}
.panel--safe{border-color:rgba(43,91,215,.32)}
.panel__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.panel h3{font-size:22px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1;background:var(--primary-soft);color:var(--primary);
}
.tag--accent{background:var(--accent);color:#fff}
.tag--warn{background:rgba(224,162,26,.16);color:#8A6410}
.panel__desc{font-size:15px;color:var(--text-2);margin-bottom:20px}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:auto}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.8}
.check-list .ico{
  width:22px;height:22px;border-radius:50%;flex:0 0 auto;margin-top:4px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;line-height:1;
}
.ico--warn{background:rgba(224,162,26,.16);color:#8A6410}
.ico--ok{background:rgba(31,157,107,.14);color:var(--ok)}

/* ---------- 数据条 ---------- */
.stat-strip{
  background:var(--primary);border-radius:var(--r-card);
  padding:36px 32px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  box-shadow:0 20px 44px -22px rgba(43,91,215,.7);
}
.stat{color:#fff;text-align:center;position:relative}
.stat+.stat::before{
  content:"";position:absolute;left:-12px;top:12%;height:76%;width:1px;
  background:rgba(255,255,255,.24);
}
.stat-num{display:block;font-size:32px;font-weight:700;line-height:1.2;letter-spacing:.5px}
.stat-label{display:block;font-size:14px;color:rgba(255,255,255,.85);margin-top:6px}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:19px;top:14px;bottom:14px;width:1px;background:var(--border);
}
.tl-item{position:relative;display:grid;grid-template-columns:40px 1fr;gap:22px;padding:18px 0}
.tl-num{
  width:40px;height:40px;border-radius:50%;background:var(--card);
  border:1px solid var(--border);color:var(--primary);font-size:14px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;z-index:1;
}
.tl-item.is-current .tl-num{background:var(--primary);border-color:var(--primary);color:#fff}
.tl-body{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);padding:22px 26px;box-shadow:var(--shadow);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out}
.tl-body:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(43,91,215,.3)}
.tl-body h3{font-size:19px;margin-bottom:8px}
.tl-body p{font-size:15px;color:var(--text-2)}

/* ---------- 列表模块 ---------- */
.list-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
.entry-list{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden}
.entry-item{
  display:flex;align-items:center;gap:14px;min-height:60px;padding:8px 22px;
  border-bottom:1px solid var(--line);color:var(--text-2);font-size:15px;
  transition:background .18s ease-out,color .18s ease-out;
}
.entry-item:last-child{border-bottom:0}
.entry-item:hover{background:var(--sub);color:var(--primary)}
.entry-item .ico{
  width:20px;height:20px;flex:0 0 auto;color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
}
.entry-item .ico svg{width:20px;height:20px;display:block}
.entry-item .arrow{margin-left:auto;color:#B9C2D4;font-size:16px;line-height:1}
.note-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:26px 28px;
}
.note-card h3{font-size:20px;margin-bottom:12px}
.note-card p{font-size:15px;color:var(--text-2);margin-bottom:14px}
.quote{
  background:var(--primary-soft);border-left:4px solid var(--primary);
  border-radius:0 var(--r-card) var(--r-card) 0;padding:20px 22px;
  font-size:15px;color:var(--text-2);
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:16px;max-width:920px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow);overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item:hover{border-color:rgba(43,91,215,.3);box-shadow:var(--shadow-hover)}
.faq-q{
  position:relative;display:flex;align-items:center;min-height:56px;
  padding:12px 58px 12px 22px;font-size:17px;font-weight:600;color:var(--text);
  cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{
  content:"";position:absolute;right:22px;top:50%;width:14px;height:14px;margin-top:-7px;
  background-image:linear-gradient(var(--primary),var(--primary)),linear-gradient(var(--primary),var(--primary));
  background-size:14px 2px,2px 14px;background-position:center,center;background-repeat:no-repeat;
  transition:transform .18s ease-out;
}
.faq-item[open] .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 22px 20px;font-size:15.5px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-block{
  background:var(--primary-soft);border-radius:var(--r-card);
  padding:52px 48px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
  border:1px solid rgba(43,91,215,.16);
}
.cta-block h2{font-size:28px;margin-bottom:10px}
.cta-block p{font-size:16px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--card);border-top:1px solid var(--border);padding:64px 0 0;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{font-size:16px;color:var(--text)}
.footer-text{font-size:14px;color:var(--text-2);line-height:1.85;max-width:340px}
.footer__title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer__list{display:flex;flex-direction:column;gap:10px}
.footer__list li{font-size:14px;color:var(--text-2);line-height:1.7}
.footer__list a{color:var(--text-2)}
.footer__list a:hover{color:var(--primary)}
.footer__bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--text-3);
}
.footer__bottom a{color:var(--text-3)}
.footer__bottom a:hover{color:var(--primary)}

/* ---------- 移动底部转化条 ---------- */
.mobile-bar{display:none}

/* ---------- 断点 ---------- */
@media (max-width:1279px){
  .sidebar{width:72px}
  .sidebar__head{justify-content:center;padding:0}
  .sidebar__brand-text,.nav-label{display:none}
  .sidebar__cta{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item.is-active::before{top:14px;bottom:14px}
  .main{margin-left:72px}
  .hero h1{font-size:38px}
}
@media (max-width:1023px){
  .sidebar{
    width:280px;transform:translateX(-100%);
    box-shadow:0 24px 60px -20px rgba(22,32,58,.35);
  }
  .sidebar.is-open{transform:translateX(0)}
  .sidebar__head{justify-content:flex-start;padding:0 18px}
  .sidebar__brand-text,.nav-label{display:block}
  .sidebar__cta{display:block}
  .nav-item{justify-content:flex-start;padding:0 14px;height:48px}
  .nav-item.is-active::before{top:12px;bottom:12px}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .container{padding:0 28px}
  section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{padding:56px 0 64px}
  .hero h1{font-size:32px}
  .compare-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:28px 16px}
  .stat+.stat::before{display:none}
  .list-layout{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-block{grid-template-columns:1fr;padding:40px 32px}
}
@media (max-width:767px){
  body{padding-bottom:84px}
  .container{padding:0 18px}
  section{padding:56px 0}
  h2.sec-title{font-size:24px}
  .hero{padding:44px 0 52px}
  .hero h1{font-size:30px}
  .hero-lead{font-size:16px}
  .btn{width:100%}
  .btn-row{flex-direction:column;gap:10px}
  .trust-row{gap:12px 18px}
  .stat-strip{padding:28px 20px;border-radius:12px}
  .stat-num{font-size:26px}
  .tl-item{grid-template-columns:34px 1fr;gap:16px}
  .timeline::before{left:16px}
  .tl-num{width:34px;height:34px;font-size:13px}
  .tl-body{padding:18px 20px}
  .panel{padding:22px 20px}
  .panel h3{font-size:19px}
  .faq-q{font-size:16px;padding:12px 50px 12px 18px}
  .faq-a{padding:0 18px 18px}
  .cta-block{padding:32px 22px}
  .cta-block h2{font-size:22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .hero-visual .badge-float{left:8px;bottom:12px;padding:10px 14px;min-width:160px}
  .hero-visual .badge-float strong{font-size:18px}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;height:64px;
    background:var(--card);border-top:1px solid var(--border);
    box-shadow:0 -10px 26px -14px rgba(22,32,58,.28);
    align-items:center;gap:10px;padding:0 12px 0 16px;z-index:80;
  }
  .mobile-bar__text{font-size:13px;color:var(--text-2);line-height:1.4;flex:1 1 auto}
  .mobile-bar .btn{width:auto;height:40px;padding:0 16px;font-size:14px}
  .mobile-bar__close{
    width:24px;height:24px;border:0;background:transparent;color:var(--text-3);
    font-size:18px;line-height:1;display:inline-flex;align-items:center;justify-content:center;
  }
}

/* roulang page: category4 */
/* ===== 设计令牌 ===== */
:root{
  --primary:#2B5BD7;
  --primary-dark:#1E44A8;
  --primary-soft:#E8EFFD;
  --accent:#FF7A3D;
  --ok:#1F9D6B;
  --warn:#E0A21A;
  --err:#D9534F;

  --bg:#F6F7FB;
  --card:#FFFFFF;
  --surface:#EEF1F7;
  --border:#E3E8F1;
  --line:#EDF0F6;

  --text:#16203A;
  --text-2:#4A5673;
  --text-3:#7C88A3;
  --white:#FFFFFF;

  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --radius-img:12px;

  --shadow:0 1px 2px rgba(22,32,58,.06), 0 12px 32px -12px rgba(22,32,58,.14);
  --shadow-hover:0 2px 4px rgba(22,32,58,.08), 0 20px 44px -14px rgba(22,32,58,.2);

  --sidebar-w:248px;
  --topbar-h:56px;
}

/* ===== 基础重置 ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--primary);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--primary-dark)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

/* ===== 布局骨架 ===== */
.app{display:flex;min-height:100vh}
.main{flex:1;min-width:0;margin-left:var(--sidebar-w);display:flex;flex-direction:column}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 40px}

/* ===== 侧栏导航（App Shell） ===== */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--card);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  padding:0 16px 20px;
  z-index:60;
  overflow-y:auto;
  transition:transform .18s ease-out,width .18s ease-out;
}
.sidebar__brand{
  height:72px;display:flex;align-items:center;gap:10px;
  color:var(--text);font-weight:700;font-size:16px;
  flex:0 0 auto;letter-spacing:.2px;
}
.brand-mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px -6px rgba(43,91,215,.7);
}
.brand-mark svg{width:18px;height:18px}
.sidebar__label{
  font-size:12px;font-weight:600;color:var(--text-3);
  letter-spacing:1.2px;margin:14px 0 8px 14px;
}
.nav-item{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;margin-bottom:4px;
  border-radius:var(--radius-btn);
  color:var(--text-2);font-size:15px;font-weight:500;
  position:relative;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-item svg{width:20px;height:20px;flex:0 0 20px;stroke:currentColor}
.nav-item:hover{background:var(--surface);color:var(--primary)}
.nav-item.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.sidebar__cta{
  margin-top:auto;background:var(--primary-soft);border-radius:var(--radius-card);
  padding:18px 16px;
}
.sidebar__cta p{font-size:13px;line-height:1.7;color:var(--text-2);margin-bottom:12px}

/* ===== 顶部栏（移动 / 平板） ===== */
.topbar{
  display:none;align-items:center;justify-content:space-between;
  height:var(--topbar-h);padding:0 18px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
  position:fixed;top:0;left:0;right:0;z-index:55;
}
.topbar__brand{
  display:flex;align-items:center;gap:9px;
  color:var(--text);font-weight:700;font-size:15px;
}
.topbar__brand .brand-mark{width:26px;height:26px;flex:0 0 26px;border-radius:8px}
.topbar__brand .brand-mark svg{width:15px;height:15px}
.topbar__menu{
  width:40px;height:40px;border-radius:var(--radius-btn);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-2);border:1px solid var(--border);
  transition:background .18s ease-out,color .18s ease-out;
}
.topbar__menu:hover{background:var(--surface);color:var(--primary)}
.topbar__menu svg{width:20px;height:20px}
.overlay{
  position:fixed;inset:0;background:rgba(22,32,58,.45);
  opacity:0;visibility:hidden;transition:opacity .18s ease-out,visibility .18s ease-out;
  z-index:58;
}
.overlay.is-open{opacity:1;visibility:visible}

/* ===== 通用组件 ===== */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  min-height:40px;font-size:14px;color:var(--text-3);
  padding-top:16px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.breadcrumb .current{color:var(--text-3)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn--primary{background:var(--primary);color:var(--white);box-shadow:0 8px 18px -10px rgba(43,91,215,.85)}
.btn--primary:hover{background:var(--primary-dark);color:var(--white);transform:translateY(-1px);box-shadow:0 12px 24px -10px rgba(43,91,215,.9)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 4px 12px -8px rgba(43,91,215,.8)}
.btn--ghost{background:var(--card);color:var(--primary);border:1px solid var(--border)}
.btn--ghost:hover{border-color:var(--primary);background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--sm{height:34px;padding:0 16px;font-size:14px}
.btn--accent{background:var(--accent);color:var(--white);box-shadow:0 8px 18px -10px rgba(255,122,61,.9)}
.btn--accent:hover{background:#EB6628;color:var(--white);transform:translateY(-1px)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600}
.link-arrow::after{content:"→";transition:transform .18s ease-out}
.link-arrow:hover::after{transform:translateX(3px)}

.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:var(--radius-pill);font-size:13px;font-weight:600;
  background:var(--primary-soft);color:var(--primary);white-space:nowrap;
}
.badge--accent{background:var(--accent);color:var(--white)}
.badge--muted{background:var(--surface);color:var(--text-2)}

.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:26px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(43,91,215,.3)}

.section{padding:96px 0}
.section--tight{padding:64px 0}
.section__head{max-width:760px;margin-bottom:40px}
.section__eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);letter-spacing:.6px;margin-bottom:12px;
}
.section__eyebrow::before{content:"";width:18px;height:3px;border-radius:3px;background:var(--primary)}
h1,.h1{font-size:44px;line-height:1.32;font-weight:700;letter-spacing:-.4px}
h2,.h2{font-size:32px;line-height:1.45;font-weight:700;letter-spacing:-.2px}
h3,.h3{font-size:22px;line-height:1.55;font-weight:700}
h4,.h4{font-size:18px;line-height:1.6;font-weight:600}
.lead{font-size:17px;line-height:1.95;color:var(--text-2)}
.muted{color:var(--text-2)}
.small{font-size:14px;line-height:1.85;color:var(--text-2)}
.tiny{font-size:13px;color:var(--text-3)}

/* ===== Hero ===== */
.hero{padding:36px 0 8px}
.hero__grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero__eyebrow{margin-bottom:18px}
.hero h1{margin-bottom:20px}
.hero__lead{max-width:620px;margin-bottom:28px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero__trust{display:flex;flex-wrap:wrap;gap:12px 28px;border-top:1px solid var(--line);padding-top:22px}
.hero__trust li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2)}
.trust-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);flex:0 0 8px}
.trust-dot--accent{background:var(--accent)}
.trust-dot--ok{background:var(--ok)}
.hero__media{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:18px;padding:14px;box-shadow:var(--shadow);
}
.hero__media img{aspect-ratio:4/3;object-fit:cover;width:100%}
.hero__media-tag{
  position:absolute;left:26px;bottom:26px;background:var(--card);
  border:1px solid var(--border);border-radius:var(--radius-pill);
  padding:8px 16px;font-size:13px;font-weight:600;color:var(--text-2);
  box-shadow:var(--shadow);display:flex;align-items:center;gap:8px;
}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--ok);flex:0 0 8px}

/* ===== 说明两段 ===== */
.explain{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start}
.explain__text p{font-size:16px;line-height:1.95;color:var(--text-2)}
.explain__text p + p{margin-top:20px}
.explain__text strong{color:var(--text);font-weight:600}
.explain__aside{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:24px;
}
.explain__aside img{aspect-ratio:16/10;object-fit:cover;margin-bottom:18px}
.point-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);
  font-size:15px;line-height:1.8;color:var(--text-2);
}
.point-list li:last-child{border-bottom:0;padding-bottom:0}
.point-list .num{
  flex:0 0 24px;height:24px;border-radius:8px;background:var(--primary-soft);
  color:var(--primary);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:4px;
}

/* ===== 折叠面板 ===== */
.faq-wrap{max-width:900px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item:hover{border-color:rgba(43,91,215,.3)}
.faq-item.is-open{border-color:rgba(43,91,215,.45)}
.faq-item__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:10px 22px;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-item__icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;line-height:1;
  transition:transform .18s ease-out,background .18s ease-out,color .18s ease-out;
}
.faq-item.is-open .faq-item__icon{transform:rotate(45deg);background:var(--primary);color:var(--white)}
.faq-item__a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease-out;
}
.faq-item__a-inner{padding:0 22px 22px;font-size:15.5px;line-height:1.9;color:var(--text-2)}
.faq-item.is-open .faq-item__a{max-height:520px}

/* ===== 表格 ===== */
.table-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;
}
.table-card__head{padding:24px 26px 16px}
.table-scroll{overflow-x:auto}
table.data{width:100%;border-collapse:collapse;min-width:560px}
table.data caption{text-align:left;padding:0 26px 14px;font-size:13px;color:var(--text-3)}
table.data th,table.data td{
  text-align:left;padding:16px 26px;font-size:15px;line-height:1.8;
  border-top:1px solid var(--line);vertical-align:top;
}
table.data thead th{
  background:var(--surface);color:var(--text-2);font-weight:600;font-size:14px;
  border-top:0;letter-spacing:.3px;
}
table.data tbody td:first-child{font-weight:600;color:var(--text)}
table.data tbody td:last-child{color:var(--text-2)}
table.data tbody tr:hover{background:#FAFBFE}
.chip-ok{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--ok)}
.chip-ok::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok)}
.chip-warn{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--warn)}
.chip-warn::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--warn)}

/* ===== 返回入口 ===== */
.back-home{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 28px;
}
.back-home__text h3{margin-bottom:6px}
.back-home__text p{font-size:14.5px;color:var(--text-2);max-width:620px}
.quick-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.quick-links a{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:var(--radius-pill);background:var(--card);border:1px solid var(--border);
  font-size:14px;font-weight:500;color:var(--text-2);
  transition:all .18s ease-out;
}
.quick-links a:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft);transform:translateY(-1px)}

/* ===== CTA ===== */
.cta-block{
  background:var(--primary-soft);border-radius:18px;
  padding:56px 48px;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:28px;
}
.cta-block h2{font-size:28px;margin-bottom:10px}
.cta-block p{font-size:16px;color:var(--text-2);max-width:640px}
.cta-block__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:auto;background:var(--card);border-top:1px solid var(--border);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-size:16px}
.footer-text{font-size:14px;line-height:1.9;color:var(--text-2);max-width:320px}
.footer__title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.3px}
.footer__list li{margin-bottom:11px;font-size:14px;color:var(--text-2);line-height:1.7}
.footer__list a{color:var(--text-2)}
.footer__list a:hover{color:var(--primary)}
.footer__bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;color:var(--text-3);
}
.footer__bottom a{color:var(--text-3)}
.footer__bottom a:hover{color:var(--primary)}

/* ===== 移动端底部转化条 ===== */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:64px;background:var(--card);border-top:1px solid var(--border);
  box-shadow:0 -6px 20px -12px rgba(22,32,58,.28);
  align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
}
.mobile-bar__text{font-size:13.5px;color:var(--text-2);line-height:1.4}
.mobile-bar__close{
  width:24px;height:24px;flex:0 0 24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-3);font-size:15px;line-height:1;
}
.mobile-bar__close:hover{background:var(--surface);color:var(--text)}

/* ===== 响应式 ===== */
@media (max-width:1279px) and (min-width:1024px){
  :root{--sidebar-w:76px}
  .sidebar{padding:0 12px 20px}
  .sidebar__brand span:last-child{display:none}
  .sidebar__brand{justify-content:center}
  .sidebar__label{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item__label{display:none}
  .nav-item::after{
    content:attr(data-tip);position:absolute;left:66px;top:50%;transform:translateY(-50%);
    background:var(--text);color:#fff;font-size:13px;line-height:1;
    padding:9px 12px;border-radius:8px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .18s ease-out;z-index:70;
  }
  .nav-item:hover::after{opacity:1}
  .sidebar__cta{display:none}
  .container{padding:0 28px}
  .hero__grid{grid-template-columns:1fr;gap:40px}
}

@media (max-width:1023px){
  :root{--sidebar-w:280px}
  .main{margin-left:0;padding-top:var(--topbar-h)}
  .topbar{display:flex}
  .sidebar{transform:translateX(-100%);width:280px;box-shadow:var(--shadow-hover)}
  .sidebar.is-open{transform:translateX(0)}
  .sidebar__brand{height:64px}
  .nav-item{height:48px}
  .container{padding:0 28px}
  .hero__grid{grid-template-columns:1fr;gap:36px}
  h1,.h1{font-size:34px}
  h2,.h2{font-size:27px}
  .section{padding:76px 0}
  .explain{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-block{padding:40px 32px}
}

@media (max-width:767px){
  body{line-height:1.85}
  .main{padding-bottom:84px}
  .container{padding:0 18px}
  h1,.h1{font-size:30px;line-height:1.38}
  h2,.h2{font-size:24px}
  h3,.h3{font-size:19px}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .section__head{margin-bottom:28px}
  .hero{padding:24px 0 4px}
  .hero__media{padding:10px}
  .hero__media-tag{left:18px;bottom:18px;padding:7px 13px;font-size:12.5px}
  .hero__actions .btn{flex:1 1 auto}
  .card{padding:20px}
  .faq-item__q{padding:10px 18px;font-size:16px;min-height:58px}
  .faq-item__a-inner{padding:0 18px 18px;font-size:15px}
  table.data th,table.data td{padding:14px 18px;font-size:14.5px}
  table.data caption{padding:0 18px 12px}
  .table-card__head{padding:20px 18px 14px}
  .back-home{padding:22px 20px}
  .cta-block{padding:32px 22px;border-radius:14px}
  .cta-block h2{font-size:22px}
  .cta-block__actions{width:100%}
  .cta-block__actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .site-footer{padding-top:48px}
  .mobile-bar{display:flex}
  .mobile-bar.is-hidden{display:none}
}

@media (max-width:400px){
  .hero__trust{gap:10px 18px}
  .topbar__brand span:last-child{font-size:14px}
}

/* roulang page: category3 */
:root{
  --primary:#2B5BD7;
  --primary-dark:#1E44A8;
  --primary-soft:#E8EFFD;
  --accent:#FF7A3D;
  --success:#1F9D6B;
  --warning:#E0A21A;
  --danger:#D9534F;
  --bg:#F6F7FB;
  --card:#FFFFFF;
  --surface:#EEF1F7;
  --border:#E3E8F1;
  --line:#EDF0F6;
  --text:#16203A;
  --text-2:#4A5673;
  --text-3:#7C88A3;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(22,32,58,.06),0 12px 32px -12px rgba(22,32,58,.14);
  --shadow-hover:0 2px 4px rgba(22,32,58,.08),0 20px 44px -16px rgba(22,32,58,.2);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--primary-dark);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:700;line-height:1.35;color:var(--text);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 40px;}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px -10px rgba(43,91,215,.7);}
.btn--primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);}
.btn--primary:active{transform:translateY(1px);}
.btn--secondary{background:#fff;color:var(--primary);border:1px solid var(--primary);}
.btn--secondary:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-1px);}
.btn--ghost{background:transparent;color:var(--primary);}
.btn--ghost:hover{background:var(--primary-soft);color:var(--primary-dark);}
.btn--sm{height:34px;padding:0 16px;font-size:14px;border-radius:8px;}
.btn--lg{height:52px;padding:0 28px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--radius-pill);background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:600;line-height:1;
}
.badge--accent{background:var(--accent);color:#fff;}
.text-link{color:var(--primary);font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.text-link:hover{color:var(--accent);}

/* ---------- 顶部栏（移动端） ---------- */
.topbar{
  position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 18px;background:#fff;border-bottom:1px solid var(--border);
}
.topbar__brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--text);}
.topbar__menu{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;color:var(--text-2);border:1px solid var(--border);
}
.topbar__menu:hover{background:var(--surface);color:var(--primary);}
.topbar__menu svg{width:20px;height:20px;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;background:var(--primary);flex:none;
}
.brand-mark svg{width:19px;height:19px;}

/* ---------- 侧栏导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;z-index:60;width:280px;
  display:flex;flex-direction:column;gap:6px;
  padding:0 12px 18px;background:#fff;border-right:1px solid var(--border);
  overflow-y:auto;transform:translateX(-100%);transition:transform var(--ease);
}
.sidebar.is-open{transform:translateX(0);}
.sidebar__brand{display:flex;align-items:center;gap:10px;height:72px;padding:0 4px;flex:none;}
.sidebar__brand .brand-text{font-size:16px;font-weight:700;line-height:1.3;color:var(--text);}
.sidebar__group-title{
  font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.04em;
  padding:12px 14px 6px;
}
.sidebar__nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:48px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;font-weight:500;
  transition:background-color var(--ease),color var(--ease);
}
.nav-item:hover{background:var(--surface);color:var(--primary);}
.nav-item__icon{display:inline-flex;width:20px;height:20px;flex:none;color:currentColor;}
.nav-item__icon svg{width:20px;height:20px;}
.nav-item.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--primary);
}
.sidebar__cta{
  margin-top:auto;padding:18px;border-radius:var(--radius-card);
  background:var(--primary-soft);
}
.sidebar__cta p{font-size:14px;line-height:1.75;color:var(--text-2);margin-bottom:12px;}
.overlay{
  position:fixed;inset:0;z-index:55;background:rgba(22,32,58,.45);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.overlay.is-open{opacity:1;visibility:visible;}

.main-wrap{padding-left:0;transition:padding-left var(--ease);}

@media (min-width:1024px){
  .topbar{display:none;}
  .overlay{display:none;}
  .sidebar{transform:none;z-index:20;}
}
@media (min-width:1024px) and (max-width:1279px){
  .sidebar{width:76px;padding:0 10px 16px;}
  .sidebar__brand{justify-content:center;padding:0;}
  .sidebar__brand .brand-text{display:none;}
  .sidebar__group-title{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item__label{display:none;}
  .sidebar__cta{display:none;}
  .main-wrap{padding-left:76px;}
}
@media (min-width:1280px){
  .sidebar{width:240px;padding:0 16px 20px;}
  .main-wrap{padding-left:240px;}
}

/* ---------- 面包屑 ---------- */
.crumb-bar{border-bottom:1px solid var(--border);background:#fff;}
.crumb-bar .container{display:flex;align-items:center;min-height:44px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6;}
.breadcrumb li[aria-current]{color:var(--text-3);}

/* ---------- 首屏 ---------- */
.page-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--border);}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.13;
}
.page-hero__grid{
  position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(to right,rgba(43,91,215,.06) 1px,transparent 1px);
  background-size:88px 100%;
}
.page-hero .container{position:relative;z-index:1;padding-top:64px;padding-bottom:64px;}
.page-hero h1{font-size:clamp(30px,4.2vw,44px);letter-spacing:-.01em;margin:16px 0 14px;max-width:820px;}
.page-hero__lead{font-size:17px;line-height:1.9;color:var(--text-2);max-width:760px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-points span{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:var(--radius-pill);background:var(--surface);color:var(--text-2);font-size:14px;
}
.hero-points span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--soft{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,3vw,32px);letter-spacing:-.01em;}
.section-head p{margin-top:12px;font-size:16px;color:var(--text-2);max-width:760px;}

/* ---------- 标签筛选行 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;
  border-radius:var(--radius-pill);border:1px solid var(--border);
  background:#fff;color:var(--text-2);font-size:14px;font-weight:500;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.chip:hover{border-color:rgba(43,91,215,.35);color:var(--primary);background:var(--primary-soft);}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff;}

/* ---------- 卡片网格 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(43,91,215,.3);box-shadow:var(--shadow-hover);}
.card__media{position:relative;aspect-ratio:16/9;background:var(--surface);overflow:hidden;}
.card__media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--ease);}
.card:hover .card__media img{transform:scale(1.02);}
.card__body{display:flex;flex-direction:column;gap:12px;padding:24px;flex:1;}
.card__body h3{font-size:19px;line-height:1.5;}
.card__body p{font-size:15px;line-height:1.85;color:var(--text-2);}
.card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:4px;}
.card__link{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;}
.card__link::after{content:"→";transition:transform var(--ease);}
.card:hover .card__link::after{transform:translateX(3px);}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ---------- 引用块 ---------- */
.quote-block{
  background:var(--primary-soft);border-radius:var(--radius-card);
  padding:56px 48px;text-align:center;
}
.quote-block blockquote{
  margin:0 auto;max-width:760px;font-size:clamp(18px,2.2vw,22px);
  line-height:1.8;font-weight:600;color:var(--text);
}
.quote-block cite{
  display:block;margin-top:18px;font-style:normal;font-size:14px;color:var(--text-2);font-weight:500;
}
.quote-block cite::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:10px;vertical-align:middle;}

/* ---------- 入口列表 ---------- */
.entry-list{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;
}
.entry-item{
  display:flex;align-items:center;gap:14px;min-height:62px;padding:16px 22px;
  border-bottom:1px solid var(--line);color:var(--text);font-size:15px;font-weight:500;
  transition:background-color var(--ease),color var(--ease);
}
.entry-item:last-child{border-bottom:0;}
.entry-item:hover{background:var(--surface);color:var(--primary);}
.entry-item__icon{display:inline-flex;width:20px;height:20px;color:var(--primary);flex:none;}
.entry-item__icon svg{width:20px;height:20px;}
.entry-item__arrow{margin-left:auto;color:var(--text-3);font-size:16px;}
.entry-item:hover .entry-item__arrow{color:var(--primary);}

/* ---------- CTA ---------- */
.cta-block{
  background:var(--primary-soft);border-radius:var(--radius-card);
  padding:56px 40px;text-align:center;
}
.cta-block h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:12px;}
.cta-block p{font-size:16px;color:var(--text-2);max-width:640px;margin:0 auto 26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:72px 0 0;}
.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:14px;}
.footer-brand strong{font-size:16px;font-weight:700;line-height:1.4;}
.footer-text{font-size:14px;line-height:1.85;color:var(--text-2);max-width:340px;}
.footer__title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;}
.footer__list li{margin-bottom:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.footer__list a{color:var(--text-2);}
.footer__list a:hover{color:var(--primary);}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer__bottom a{color:var(--text-3);}
.footer__bottom a:hover{color:var(--primary);}

/* ---------- 移动端固定转化条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  display:flex;align-items:center;gap:12px;height:64px;padding:0 16px;
  background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -8px 24px -14px rgba(22,32,58,.35);
  transition:transform var(--ease),opacity var(--ease);
}
.mobile-bar.is-hidden{transform:translateY(110%);opacity:0;pointer-events:none;}
.mobile-bar p{font-size:14px;color:var(--text-2);flex:1;line-height:1.5;}
.mobile-bar__close{
  width:24px;height:24px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-3);flex:none;
}
.mobile-bar__close:hover{color:var(--text);}
body{padding-bottom:84px;}
body.bar-hidden{padding-bottom:0;}
@media (min-width:1024px){
  .mobile-bar{left:auto;right:24px;bottom:24px;width:320px;height:auto;padding:18px;border-radius:var(--radius-card);border:1px solid var(--border);flex-wrap:wrap;}
  .mobile-bar p{flex:1 1 100%;font-size:14px;margin-bottom:0;}
  .mobile-bar .btn{flex:1;}
  body{padding-bottom:0;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 28px;}
  .section{padding:72px 0;}
  .grid-cards{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .page-hero .container{padding-top:44px;padding-bottom:48px;}
  .grid-cards{grid-template-columns:1fr;}
  .section-head{margin-bottom:26px;}
  .quote-block{padding:36px 22px;}
  .cta-block{padding:36px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
  .footer__bottom{margin-top:32px;}
  .hero-actions .btn{flex:1 1 100%;}
  .entry-item{padding:14px 16px;font-size:14.5px;}
  .mobile-bar p{font-size:13px;}
}