/* roulang page: index */
:root{
  --brand:#1B5FD9;
  --brand-dark:#1149AE;
  --brand-soft:#E8F0FE;
  --accent:#FF7A1B;
  --accent-soft:#FFF1E6;
  --success:#12A150;
  --danger:#E5484D;
  --info-bg:#F2F7FF;
  --text:#101828;
  --text-2:#475467;
  --text-3:#667085;
  --text-4:#98A2B3;
  --border:#E4E9F2;
  --divider:#EEF2F8;
  --bg:#F5F8FD;
  --card:#FFFFFF;
  --surface:#F8FAFD;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-card:0 1px 2px rgba(16,24,40,.04), 0 12px 28px -12px rgba(16,24,40,.12);
  --shadow-hover:0 18px 36px -14px rgba(27,95,217,.20);
  --nav-w:240px;
  --ease:.24s ease;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-bottom:80px;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.35}
h1{font-size:42px;line-height:1.25}
h2{font-size:30px;line-height:1.35}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin:0 0 .9em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid rgba(27,95,217,.35);outline-offset:2px}

.page-shell{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.wrap{max-width:1040px;margin:0 auto;padding:0 32px;width:100%}
.section{padding:88px 0}
.section-alt{background:#fff}
.section-soft{background:linear-gradient(180deg,#F8FAFD 0%,#F5F8FD 100%)}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  background:#fff;border-right:1px solid var(--border);
  display:flex;flex-direction:column;overflow-y:auto;z-index:1040;
}
.side-brand{min-height:72px;padding:14px 20px;border-bottom:1px solid var(--divider);display:flex;align-items:center}
.brand-link{display:block;line-height:1.3}
.brand-name{display:block;font-size:16px;font-weight:700;color:var(--text);letter-spacing:.01em}
.brand-sub{display:block;font-size:12px;color:var(--text-4);letter-spacing:.04em;margin-top:2px}
.side-menu{padding:12px 12px 4px;flex:1}
.menu-group{
  font-size:12px;letter-spacing:.08em;color:var(--text-4);
  margin:16px 0 8px;padding:0 14px;font-weight:600;
}
.menu-group:first-child{margin-top:4px}
.menu-item{
  display:flex;align-items:center;height:44px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;position:relative;
  transition:background var(--ease),color var(--ease);
}
.menu-item:hover{background:var(--brand-soft);color:var(--brand)}
.menu-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.menu-item.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:2px;background:var(--brand);
}
.menu-item i{width:18px;margin-right:10px;font-size:14px;opacity:.8}
.side-cta{margin:12px;padding:16px;background:var(--info-bg);border-radius:12px}
.side-cta p{font-size:13px;line-height:1.6;color:var(--text-2);margin:0 0 12px}

/* ---------- 移动端顶部导航 ---------- */
.mobile-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--border);transition:box-shadow .28s ease;
}
.mobile-header.scrolled{box-shadow:0 8px 24px -14px rgba(16,24,40,.28)}
.mh-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 16px}
.mh-brand{font-size:15px;font-weight:700;color:var(--text);line-height:1.3}
.mh-brand small{display:block;font-size:11px;font-weight:400;color:var(--text-4);letter-spacing:.04em}
.mh-toggle{
  width:42px;height:42px;border:1px solid var(--border);background:#fff;border-radius:10px;
  color:var(--text-2);font-size:17px;display:flex;align-items:center;justify-content:center;
}
.mh-toggle:hover{border-color:rgba(27,95,217,.35);color:var(--brand)}
.mh-menu{padding:8px 12px 16px;border-top:1px solid var(--divider)}
.mh-item{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;margin-bottom:4px;
}
.mh-item:hover{background:var(--brand-soft);color:var(--brand)}
.mh-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.mh-cta{margin-top:10px}

/* ---------- 按钮 ---------- */
.btn-primary-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:16px;font-weight:600;
  border:none;cursor:pointer;transition:all var(--ease);
}
.btn-primary-x:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(27,95,217,.55)}
.btn-primary-x:active{transform:translateY(0);box-shadow:none}
.btn-primary-x.sm{height:40px;font-size:14px;padding:0 16px;border-radius:9px}
.btn-ghost-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  background:#fff;border:1px solid var(--border);color:#344054;font-size:15px;font-weight:500;
  transition:all var(--ease);cursor:pointer;
}
.btn-ghost-x:hover{border-color:var(--brand);color:var(--brand)}
.link-underline{color:var(--brand);font-size:15px;font-weight:600;text-underline-offset:3px;text-decoration:underline;text-decoration-color:rgba(27,95,217,.35)}
.link-underline:hover{text-decoration-color:var(--brand)}
.sec-actions{display:flex;flex-wrap:wrap;gap:18px;align-items:center;margin-top:28px}

/* ---------- 通用 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;
  padding:4px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-weight:600;
}
.pill.orange{background:var(--accent-soft);color:var(--accent)}
.badge-cat{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;background:var(--brand-soft);color:var(--brand);font-weight:600;
}
.badge-soft{background:var(--accent-soft);color:var(--accent)}
.sec-head{max-width:720px;margin-bottom:40px}
.sec-desc{color:var(--text-3);font-size:16px;margin-top:12px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:#fff;padding:72px 0 80px;min-height:560px;display:flex;align-items:center}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.16;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.96) 30%,rgba(255,255,255,.62) 100%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2}
.hero-title{font-size:42px;line-height:1.25;margin:18px 0 16px;letter-spacing:-.01em}
.hero-sub{font-size:17px;line-height:1.85;color:var(--text-2);max-width:520px;margin-bottom:8px}
.hero-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin:28px 0 30px}
.trust-bar{display:flex;flex-wrap:wrap;align-items:center}
.trust-bar li{
  display:flex;align-items:center;gap:7px;font-size:13px;color:var(--text-3);
  padding:0 16px;border-left:1px solid var(--border);line-height:1.5;
}
.trust-bar li:first-child{padding-left:0;border-left:none}
.trust-bar li i{color:var(--brand);font-size:13px}

.login-preview{position:relative;padding:20px;background:var(--brand-soft);border-radius:18px}
.lp-card{background:#fff;border-radius:14px;box-shadow:var(--shadow-card);padding:24px;max-width:360px;margin-left:auto}
.lp-head{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--text);margin-bottom:20px}
.lp-dot{width:10px;height:10px;border-radius:50%;background:var(--accent)}
.lp-field{margin-bottom:14px}
.lp-field label{display:block;font-size:12px;color:var(--text-4);margin-bottom:6px;letter-spacing:.04em}
.lp-input{
  height:44px;border:1px solid var(--border);border-radius:var(--radius-input);background:var(--surface);
  display:flex;align-items:center;padding:0 14px;font-size:14px;color:var(--text-4);
}
.lp-btn{
  height:46px;border-radius:var(--radius-btn);background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;margin-top:20px;
}
.lp-foot{font-size:12px;color:var(--text-4);text-align:center;margin-top:14px;letter-spacing:.04em}

/* ---------- 卡片 ---------- */
.card-big{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px;height:100%;box-shadow:var(--shadow-card);transition:all var(--ease);
}
.card-big:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.icon-round{
  width:46px;height:46px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:18px;
}
.card-big h3{margin-bottom:12px}
.card-big p{color:var(--text-3);font-size:15px;margin-bottom:0}
.stack{display:grid;gap:16px}
.card-row{
  display:flex;gap:16px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:22px;transition:all var(--ease);
}
.card-row:hover{border-color:rgba(27,95,217,.35);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.card-row .icon-round{margin-bottom:0;flex:0 0 44px;width:44px;height:44px;font-size:17px;background:#fff;border:1px solid var(--border)}
.card-row h3{font-size:17px;margin-bottom:6px}
.card-row p{font-size:14px;color:var(--text-3);margin:0}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;padding-top:44px}
.step::before{
  content:"";position:absolute;top:9px;left:28px;right:-24px;height:1px;background:var(--border);
}
.step:last-child::before{display:none}
.step-dot{
  position:absolute;top:0;left:0;width:20px;height:20px;border-radius:50%;background:var(--brand);
  color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:600;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-3);margin:0}
.step-media{margin-top:16px;border-radius:12px;overflow:hidden;background:var(--divider)}
.step-media img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 内容列表 ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:13px;color:var(--text-2);background:#fff;border:1px solid var(--border);
  transition:all var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.chip.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.news-lead{
  grid-column:1 / -1;display:grid;grid-template-columns:5fr 7fr;gap:0;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);transition:all var(--ease);
}
.news-lead:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(27,95,217,.35)}
.news-lead-media{background:var(--divider)}
.news-lead-media img{width:100%;height:100%;aspect-ratio:16/9;object-fit:cover}
.news-lead-body{padding:26px;display:flex;flex-direction:column;justify-content:center}
.news-lead-body h3{font-size:21px;margin:12px 0 10px;line-height:1.5}
.news-lead-body h3 a{color:var(--text)}
.news-lead-body h3 a:hover{color:var(--brand)}
.news-lead-body p{
  font-size:14px;color:var(--text-3);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--text-4);margin-top:18px}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-4)}
.news-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px;display:flex;flex-direction:column;transition:all var(--ease);
}
.news-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(27,95,217,.35)}
.news-card h3{
  font-size:17px;margin:12px 0 8px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card h3 a{color:var(--text)}
.news-card h3 a:hover{color:var(--brand)}
.news-card p{
  font-size:14px;color:var(--text-3);margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .meta{margin-top:auto}
.empty-state{
  text-align:center;padding:56px 24px;background:#fff;border:1px dashed var(--border);border-radius:var(--radius-card);
}
.empty-state i{font-size:44px;color:#D6DEEA;display:block;margin-bottom:16px}
.empty-state p{font-size:14px;color:var(--text-3);margin-bottom:18px}

/* ---------- FAQ ---------- */
.accordion{--bs-accordion-border-color:var(--border);--bs-accordion-border-radius:12px;--bs-accordion-inner-border-radius:12px;
  --bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-color:var(--brand);--bs-accordion-active-bg:#fff;
  --bs-accordion-btn-color:var(--text);--bs-accordion-btn-bg:#fff;--bs-accordion-btn-padding-x:20px;
  --bs-accordion-btn-padding-y:18px;--bs-accordion-body-padding-x:20px;--bs-accordion-body-padding-y:0;}
.faq-acc .accordion-item{
  background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;margin-bottom:12px;
  box-shadow:0 1px 2px rgba(16,24,40,.03);transition:all var(--ease);
}
.faq-acc .accordion-item:hover{border-color:rgba(27,95,217,.35)}
.faq-acc .accordion-button{font-size:16px;font-weight:600;color:var(--text);border-radius:12px;padding-bottom:18px}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:#fff;box-shadow:none;padding-bottom:10px}
.faq-acc .accordion-button::after{transition:transform var(--ease);background-size:14px;width:14px;height:14px}
.faq-acc .accordion-body{font-size:15px;line-height:1.8;color:var(--text-2);padding-bottom:20px}

/* ---------- 数据与评价 ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;margin-bottom:32px;
}
.stat-item{padding:26px 22px;border-left:1px solid var(--divider);text-align:center}
.stat-item:first-child{border-left:none}
.stat-num{font-size:32px;font-weight:700;color:var(--brand);line-height:1.2}
.stat-num span{font-size:16px;font-weight:600;margin-left:2px}
.stat-label{font-size:13px;color:var(--text-3);margin-top:6px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);transition:all var(--ease)}
.review-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.review-card i.quote{color:#BBD2F7;font-size:20px;margin-bottom:12px;display:block}
.review-card p{font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:16px}
.review-from{font-size:13px;color:var(--text-4)}

/* ---------- CTA 横条 ---------- */
.cta-band{
  background:var(--info-bg);border:1px solid #DCE8FB;border-radius:var(--radius-card);
  padding:34px 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:24px;margin-bottom:8px}
.cta-band p{font-size:14px;color:var(--text-3);margin:0}

/* ---------- 固定转化条 ---------- */
.sticky-cta{
  position:fixed;right:32px;bottom:28px;width:320px;background:#fff;border:1px solid var(--border);
  border-radius:14px;box-shadow:0 18px 40px -18px rgba(16,24,40,.35);padding:18px 20px;z-index:1050;
  display:flex;align-items:center;gap:14px;opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s;
}
.sticky-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.sticky-cta .sticky-text{font-size:14px;color:var(--text-2);line-height:1.5;flex:1}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:56px 0 24px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.fb-name{font-size:16px;font-weight:700;color:var(--text);margin-bottom:12px}
.fb-desc{font-size:14px;color:var(--text-3);line-height:1.75;margin:0;max-width:280px}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-3)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.75;margin:0}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--divider);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-4);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-title{font-size:38px}
  .wrap{padding:0 28px}
}
@media (max-width:991.98px){
  :root{--nav-w:0px}
  .page-shell{margin-left:0}
  .side-nav{display:none}
  .section{padding:64px 0}
  .hero{padding:56px 0 64px;min-height:auto}
  .hero-title{font-size:32px}
  .hero-sub{font-size:16px}
  .lp-card{margin:0 auto;max-width:100%}
  .login-preview{margin-top:12px}
  .stats-wrap{grid-template-columns:repeat(2,1fr)}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(3){border-left:none}
  .stat-item:nth-child(n+3){border-top:1px solid var(--divider)}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .news-lead{grid-template-columns:1fr}
  .news-lead-media img{aspect-ratio:16/9;height:auto}
  .sticky-cta{right:16px;bottom:16px;width:280px}
}
@media (max-width:767.98px){
  body{font-size:15px;padding-bottom:96px}
  h1{font-size:28px}
  h2{font-size:22px}
  .section{padding:48px 0}
  .wrap{padding:0 16px}
  .hero-title{font-size:28px}
  .hero-actions{gap:14px}
  .hero-actions .btn-primary-x{width:100%}
  .trust-bar{flex-direction:column;align-items:flex-start;gap:10px}
  .trust-bar li{padding:0;border-left:none}
  .steps{grid-template-columns:1fr;gap:28px;padding-left:28px;position:relative}
  .steps::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--border)}
  .step{padding-top:0}
  .step::before{display:none}
  .step-dot{left:-28px;top:4px}
  .news-grid{grid-template-columns:1fr}
  .news-lead-body{padding:20px}
  .stat-bar{grid-template-columns:1fr}
  .stat-item{border-left:none;border-top:1px solid var(--divider);text-align:left}
  .stat-item:first-child{border-top:none}
  .review-grid{grid-template-columns:1fr}
  .cta-band{padding:24px}
  .cta-band .btn-primary-x{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:8px}
  .sticky-cta{
    right:0;left:0;bottom:0;width:100%;border-radius:0;border-left:none;border-right:none;border-bottom:none;
    padding:10px 16px;height:60px;box-shadow:0 -8px 24px -16px rgba(16,24,40,.4);
  }
  .sticky-cta .sticky-text{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
}
@media (max-width:520px){
  .hero-title{font-size:26px}
  .card-big,.card-row{padding:20px}
  .lp-card{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --brand:#1B5FD9;
  --brand-dark:#1149AE;
  --brand-soft:#E8F0FE;
  --accent:#FF7A1B;
  --accent-soft:#FFF1E6;
  --success:#12A150;
  --warning:#E5484D;
  --info-soft:#F2F7FF;
  --text:#101828;
  --text-2:#475467;
  --text-3:#667085;
  --text-4:#98A2B3;
  --border:#E4E9F2;
  --dash:#EEF2F8;
  --page:#F5F8FD;
  --card:#FFFFFF;
  --soft:#F8FAFD;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(16,24,40,.04),0 12px 28px -12px rgba(16,24,40,.12);
  --sh-hover:0 18px 36px -14px rgba(27,95,217,.20);
  --ease:.24s ease;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-dark)}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.4em}
:focus-visible{outline:2px solid rgba(27,95,217,.35);outline-offset:2px;border-radius:8px}
::selection{background:var(--brand-soft);color:var(--brand-dark)}

.app-shell{display:flex;align-items:flex-start;min-height:100vh}
.app-main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}

/* ---------- 左侧竖向导航 ---------- */
.side-bar{
  width:240px;flex:0 0 240px;
  background:#fff;border-right:1px solid var(--border);
  position:sticky;top:0;height:100vh;overflow-y:auto;
  padding:0 16px 24px;display:flex;flex-direction:column;
  z-index:20;
}
.brand{display:flex;align-items:center;gap:10px;height:72px;padding:0 6px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:700;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand-name{font-size:14px;font-weight:700;color:var(--text)}
.brand-sub{font-size:12px;color:var(--text-4)}
.menu-group{font-size:12px;letter-spacing:.08em;color:var(--text-4);margin:16px 0 8px;padding-left:14px}
.side-menu{display:flex;flex-direction:column}
.menu-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);transition:background var(--ease),color var(--ease);
}
.menu-item i{width:16px;font-size:14px;color:var(--text-4);transition:color var(--ease)}
.menu-item:hover{background:var(--brand-soft);color:var(--brand)}
.menu-item:hover i{color:var(--brand)}
.menu-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.menu-item.active i{color:var(--brand)}
.menu-item.active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;background:var(--brand);
}
.side-tip{
  margin-top:auto;background:var(--info-soft);border-radius:12px;padding:14px;
  font-size:13px;line-height:1.65;color:var(--text-2);
}
.side-tip p{margin:0 0 10px}
.btn-mini{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:34px;padding:0 14px;border-radius:8px;background:var(--brand);color:#fff;
  font-size:13px;font-weight:600;border:0;transition:background var(--ease);
}
.btn-mini:hover{background:var(--brand-dark);color:#fff}

/* ---------- 移动端顶部条 ---------- */
.mobile-bar{display:none}
.nav-mask{
  position:fixed;inset:0;background:rgba(16,24,40,.45);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:1040;
}

/* ---------- 通用容器与按钮 ---------- */
.wrap{width:100%;max-width:1040px;margin:0 auto;padding:0 24px}
.wrap-narrow{width:100%;max-width:1140px;margin:0 auto;padding:0 24px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(27,95,217,.6)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--border);color:#344054}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-ghost:active{background:var(--brand-soft)}
.link-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;
  color:var(--brand);text-decoration:underline;text-underline-offset:3px;
}
.link-text:hover{color:var(--brand-dark)}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);padding:24px 0 0;
}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#CBD5E1;font-size:12px}
.crumbs .current{color:var(--text-4);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;
  max-width:1140px;margin:0 auto;padding:0 24px 72px;align-items:start;
}
.article-main{min-width:0;max-width:760px}
.article-head{padding:20px 0 26px;border-bottom:1px dashed var(--dash)}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.04em;font-weight:600;
  padding:4px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);
}
.article-title{
  font-size:34px;line-height:1.3;font-weight:700;color:var(--text);
  margin:14px 0 14px;overflow-wrap:break-word;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
.article-meta .divider{width:1px;height:12px;background:#DCE3EE}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta i{font-size:12px;color:var(--text-4)}

.cover{
  border-radius:var(--r-card);overflow:hidden;background:#EEF2F8;
  margin:28px 0 32px;border:1px solid var(--border);
}
.cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 正文排版 ---------- */
.entry-content{font-size:16px;line-height:1.9;color:var(--text);overflow-wrap:break-word}
.entry-content>p{margin:0 0 .9em}
.entry-content h2{
  position:relative;font-size:24px;line-height:1.4;font-weight:700;
  margin:2em 0 .6em;padding-left:16px;
}
.entry-content h2::before{
  content:"";position:absolute;left:0;top:.45em;width:4px;height:20px;border-radius:2px;background:var(--brand);
}
.entry-content h3{font-size:19px;line-height:1.5;font-weight:600;margin:1.4em 0 .5em}
.entry-content h4{font-size:17px;font-weight:600;margin:1.2em 0 .4em}
.entry-content ul,.entry-content ol{margin:0 0 1em;padding-left:1.4em;line-height:1.85}
.entry-content li{margin:.35em 0}
.entry-content blockquote{
  margin:1.2em 0;background:var(--info-soft);border-left:3px solid var(--brand);
  padding:18px 20px;border-radius:0 10px 10px 0;color:var(--text-2);
}
.entry-content blockquote p:last-child{margin-bottom:0}
.entry-content img{border-radius:var(--r-img);margin:1.2em auto}
.entry-content figure{margin:1.2em 0}
.entry-content figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.entry-content a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.entry-content a:hover{color:var(--brand-dark)}
.entry-content table{width:100%;border-collapse:collapse;font-size:14.5px;margin:1.2em 0}
.entry-content th,.entry-content td{border:1px solid var(--border);padding:10px 12px;text-align:left;line-height:1.7}
.entry-content thead th{background:var(--soft);font-weight:600}
.entry-content tbody tr:nth-child(even){background:#FAFBFD}
.entry-content pre{
  background:#F3F5F9;border-radius:12px;padding:16px;overflow-x:auto;font-size:13.5px;line-height:1.7;margin:1.2em 0;
}
.entry-content code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
.entry-content hr{border:0;border-top:1px dashed var(--dash);margin:2em 0}

/* ---------- 文末 ---------- */
.entry-foot{margin-top:40px;padding-top:28px;border-top:1px solid var(--border)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.tag{
  display:inline-flex;align-items:center;font-size:12px;letter-spacing:.04em;
  padding:5px 12px;border-radius:999px;background:var(--soft);border:1px solid var(--border);color:var(--text-2);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.tag:hover{border-color:rgba(27,95,217,.35);color:var(--brand);background:var(--brand-soft)}
.pn-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:28px}
.pn-card{
  display:block;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--sh-card);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.pn-card:hover{border-color:rgba(27,95,217,.35);box-shadow:var(--sh-hover);transform:translateY(-2px)}
.pn-label{display:block;font-size:12px;letter-spacing:.04em;color:var(--text-4);margin-bottom:6px}
.pn-title{display:block;font-size:15.5px;font-weight:600;color:var(--text);line-height:1.55}
.pn-card:hover .pn-title{color:var(--brand)}

/* ---------- 空态 ---------- */
.empty-state{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;box-shadow:var(--sh-card);
}
.empty-state i{font-size:44px;color:#C7D2E0;display:block;margin-bottom:16px}
.empty-state p{font-size:14px;color:var(--text-3);margin-bottom:20px}

/* ---------- 侧栏 ---------- */
.article-side{min-width:0}
.side-sticky{position:sticky;top:88px;display:flex;flex-direction:column;gap:16px}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-card);
}
.side-card h3{font-size:16px;font-weight:600;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--brand);font-size:14px}
.side-list{list-style:none;padding:0;margin:0}
.side-list li+li{border-top:1px solid var(--dash)}
.side-list a{display:block;padding:14px 0;color:var(--text)}
.side-list a:hover .side-title{color:var(--brand)}
.side-title{display:block;font-size:15px;font-weight:600;line-height:1.55;transition:color var(--ease)}
.side-meta{display:block;font-size:12px;color:var(--text-4);margin-top:6px}
.side-note{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);margin-top:auto}
.site-footer .wrap{max-width:1140px;padding:56px 24px 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.fb-name{font-size:17px;font-weight:700;margin-bottom:10px;color:var(--text)}
.fb-desc{font-size:14px;color:var(--text-3);line-height:1.75;max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:14px;color:var(--text)}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-3)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.75}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--dash);margin-top:40px;padding:20px 0;font-size:13px;color:var(--text-4);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px}
  .article-title{font-size:30px}
}
@media (max-width:991.98px){
  .app-shell{display:block}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    height:60px;padding:0 16px;background:#fff;border-bottom:1px solid var(--border);
    position:sticky;top:0;z-index:1030;
  }
  .mobile-brand{font-size:15px;font-weight:700;color:var(--text)}
  .nav-toggle{
    width:42px;height:42px;border-radius:10px;border:1px solid var(--border);background:#fff;
    color:var(--text-2);display:grid;place-items:center;font-size:16px;transition:background var(--ease),color var(--ease);
  }
  .nav-toggle:hover{background:var(--brand-soft);color:var(--brand);border-color:rgba(27,95,217,.35)}
  .side-bar{
    position:fixed;top:0;left:0;bottom:0;height:100%;width:286px;max-width:84%;
    transform:translateX(-100%);transition:transform .28s ease;
    box-shadow:0 24px 48px -24px rgba(16,24,40,.4);z-index:1050;
  }
  body.nav-open .side-bar{transform:translateX(0)}
  body.nav-open .nav-mask{opacity:1;visibility:visible}
  body.nav-open{overflow:hidden}
  .menu-item{height:48px;border-radius:10px}
  .menu-item.active::before{display:none}
  .menu-item.active{box-shadow:inset 0 0 0 1px rgba(27,95,217,.2)}
  .side-tip{margin-top:24px}
  .article-layout{grid-template-columns:1fr;gap:32px;padding-bottom:56px}
  .article-main{max-width:none}
  .article-title{font-size:28px}
  .side-sticky{position:static}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .site-footer .wrap{padding-top:48px}
}
@media (max-width:767.98px){
  .wrap,.wrap-narrow,.article-layout,.site-footer .wrap{padding-left:16px;padding-right:16px}
  .article-title{font-size:25px}
  .entry-content h2{font-size:21px}
  .entry-content h3{font-size:17.5px}
  .pn-grid{grid-template-columns:1fr}
  .entry-content table{display:block;overflow-x:auto;white-space:nowrap}
  .crumbs .current{max-width:240px}
}
@media (max-width:575.98px){
  body{font-size:15.5px}
  .article-title{font-size:23px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .btn{width:100%}
  .btn-inline{width:auto}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --primary:#1B5FD9;
  --primary-dark:#1149AE;
  --primary-soft:#E8F0FE;
  --accent:#FF7A1B;
  --accent-soft:#FFF1E6;
  --success:#12A150;
  --danger:#E5484D;
  --info-bg:#F2F7FF;
  --text:#101828;
  --text-2:#475467;
  --text-3:#667085;
  --disabled:#98A2B3;
  --border:#E4E9F2;
  --dash:#EEF2F8;
  --bg:#F5F8FD;
  --card:#FFFFFF;
  --soft:#F8FAFD;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(16,24,40,.04), 0 12px 28px -12px rgba(16,24,40,.12);
  --sh-hover:0 18px 36px -14px rgba(27,95,217,.20);
  --side-w:240px;
  --gap-sec:88px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:0;}
p{margin:0 0 .9em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(27,95,217,.35);outline-offset:2px;border-radius:6px;}

/* ---------- 框架布局 ---------- */
.layout{display:flex;min-height:100vh;align-items:flex-start;}
.sidebar{
  width:var(--side-w);
  flex:0 0 var(--side-w);
  background:#fff;
  border-right:1px solid var(--border);
  position:sticky;
  top:0;
  height:100vh;
  overflow-y:auto;
  padding:0 16px 24px;
  display:flex;
  flex-direction:column;
}
.main{flex:1;min-width:0;}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px;}

/* ---------- 侧栏品牌 ---------- */
.brand{display:flex;align-items:center;gap:10px;height:72px;flex:0 0 72px;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),#3B7BEE);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 34px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.bt-up{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;}
.bt-down{font-size:12px;color:var(--text-3);white-space:nowrap;letter-spacing:.02em;}

/* ---------- 侧栏菜单 ---------- */
.menu-group{font-size:12px;letter-spacing:.08em;color:var(--disabled);padding:16px 0 8px;}
.side-menu{display:flex;flex-direction:column;}
.menu-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding-left:14px;padding-right:12px;
  border-radius:10px;
  color:var(--text-2);font-size:15px;
  transition:background .2s ease,color .2s ease;
}
.menu-item i{width:16px;font-size:14px;color:var(--text-3);transition:color .2s ease;}
.menu-item:hover{background:var(--primary-soft);color:var(--primary);}
.menu-item:hover i{color:var(--primary);}
.menu-item.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.menu-item.active i{color:var(--primary);}
.menu-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:2px;background:var(--primary);
}
.side-card{
  margin-top:auto;
  background:var(--info-bg);
  border-radius:12px;
  padding:14px;
}
.side-card p{font-size:13px;line-height:1.7;color:var(--text-2);margin:0 0 10px;}
.side-card .btn-xs{
  display:inline-flex;align-items:center;gap:6px;
  height:32px;padding:0 14px;border-radius:8px;
  background:var(--primary);color:#fff;font-size:13px;font-weight:600;
}
.side-card .btn-xs:hover{background:var(--primary-dark);color:#fff;}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:1035;
  background:#fff;border-bottom:1px solid var(--border);
  transition:box-shadow .24s ease;
}
.topbar.scrolled{box-shadow:0 8px 20px -14px rgba(16,24,40,.35);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;height:60px;padding:0 16px;}
.topbar .brand{height:60px;flex:0 0 60px;}
.hamburger{
  width:42px;height:42px;border:1px solid var(--border);background:#fff;
  border-radius:10px;color:var(--text-2);font-size:16px;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.hamburger:hover{border-color:rgba(27,95,217,.35);color:var(--primary);}
.offcanvas{border:none;max-width:86vw;}
.offcanvas-header{border-bottom:1px solid var(--border);}
.offcanvas-body{padding:8px 16px 32px;}
.offcanvas .menu-item{height:48px;border-radius:10px;}
.offcanvas .menu-item.active::before{display:none;}
.offcanvas .menu-item.active{background:var(--primary-soft);}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#CBD2DE;font-size:12px;}
.crumb .cur{color:var(--text-3);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:320px;
  display:flex;align-items:center;
  padding:56px 0 60px;
  background-image:
    linear-gradient(100deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.88) 42%,rgba(255,255,255,.56) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--border);
}
.hero-brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary);
  background:#fff;border:1px solid var(--border);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:16px;font-weight:600;
}
.hero h1{
  font-size:42px;line-height:1.25;font-weight:700;margin-bottom:16px;max-width:16em;
}
.hero-lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:38em;margin-bottom:26px;}
.hero-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--primary);color:#fff;font-size:16px;font-weight:600;border:none;
  transition:background .24s ease,transform .24s ease,box-shadow .24s ease;
}
.btn-main:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(17,73,174,.65);}
.btn-main:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  background:#fff;border:1px solid var(--border);color:#344054;font-size:15px;font-weight:600;
  transition:border-color .24s ease,color .24s ease,transform .24s ease;
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.link-underline{
  color:var(--primary);font-weight:600;font-size:15px;
  text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;
}
.link-underline:hover{color:var(--primary-dark);}

/* ---------- 板块通用 ---------- */
.sec{padding-top:var(--gap-sec);}
.sec-last{padding-bottom:24px;}
.sec-head{margin-bottom:32px;}
.sec-head h2{font-size:30px;line-height:1.35;margin-bottom:12px;}
.sec-head p{color:var(--text-2);font-size:16px;max-width:44em;margin:0;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--primary);
  background:var(--primary-soft);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;font-weight:600;
}

/* ---------- 要点清单 ---------- */
.checklist{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:8px 24px;}
.list-row{display:flex;gap:20px;padding:24px 0;border-bottom:1px dashed var(--dash);}
.list-row:last-child{border-bottom:none;}
.icon-badge{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.list-row h3{font-size:20px;font-weight:600;line-height:1.5;margin-bottom:6px;}
.list-row p{font-size:15px;line-height:1.8;color:var(--text-2);margin:0;}
.list-row .tag{
  display:inline-block;margin-left:10px;font-size:12px;font-weight:600;
  color:var(--accent);background:var(--accent-soft);border-radius:var(--r-pill);padding:3px 10px;vertical-align:2px;
}

/* ---------- 图文区块 ---------- */
.figure-block{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;}
.figure-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--border);
  background:#EEF2F8;box-shadow:var(--sh-card);
}
.figure-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.figure-body h2{font-size:28px;line-height:1.4;margin-bottom:14px;}
.figure-body>p{color:var(--text-2);font-size:16px;margin-bottom:18px;}
.plain-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--dash);
  font-size:15px;color:var(--text-2);
}
.plain-list li:last-child{border-bottom:none;}
.plain-list i{color:var(--success);font-size:14px;margin-top:6px;flex:0 0 14px;}
.plain-list strong{color:var(--text);font-weight:600;}

/* ---------- 提示框 ---------- */
.note{
  border-radius:var(--r-card);padding:22px 24px;
  background:var(--info-bg);border-left:3px solid var(--primary);
}
.note h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.note p{font-size:15px;color:var(--text-2);margin:0;}
.prep-strip{
  margin-top:16px;display:flex;flex-wrap:wrap;gap:12px;
}
.prep-item{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-pill);
  padding:8px 16px;font-size:14px;color:var(--text-2);
}
.prep-item i{color:var(--primary);font-size:13px;}

/* ---------- FAQ ---------- */
.accordion{--bs-accordion-border-width:0;--bs-accordion-bg:transparent;}
.accordion-item{
  background:#fff;border:1px solid var(--border)!important;
  border-radius:12px!important;margin-bottom:12px;overflow:hidden;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.accordion-item:hover{border-color:rgba(27,95,217,.35)!important;}
.accordion-button{
  background:#fff;color:var(--text);font-size:16px;font-weight:600;
  padding:18px 22px;box-shadow:none!important;border-radius:12px!important;
}
.accordion-button:not(.collapsed){background:#fff;color:var(--primary);}
.accordion-button::after{
  width:16px;height:16px;background-size:16px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23667085' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 6l5 5 5-5'/%3E%3C/svg%3E");
  transition:transform .24s ease;
}
.accordion-button:not(.collapsed)::after{
  transform:rotate(180deg);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%231B5FD9' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 6l5 5 5-5'/%3E%3C/svg%3E");
}
.accordion-body{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- CTA 横条 ---------- */
.cta-bar{
  background:var(--primary-soft);border-radius:var(--r-card);
  padding:32px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-bar h2{font-size:24px;line-height:1.4;margin-bottom:8px;}
.cta-bar p{margin:0;font-size:15px;color:var(--text-2);max-width:40em;}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.back-row{margin-top:28px;display:flex;justify-content:flex-start;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:56px 0 24px;margin-top:var(--gap-sec);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:32px;}
.fb-name{font-size:16px;font-weight:700;margin-bottom:10px;color:var(--text);}
.fb-desc{font-size:14px;line-height:1.8;color:var(--text-3);margin:0;}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:12px;color:var(--text);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--text-3);}
.footer-col ul li a:hover{color:var(--primary);}
.footer-col p{font-size:14px;line-height:1.8;color:var(--text-3);margin:0;}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .figure-block{gap:28px;}
}
@media (max-width:991px){
  :root{--gap-sec:64px;}
  .layout{display:block;}
  .sidebar{display:none;}
  .topbar{display:block;}
  .hero{min-height:auto;padding:40px 0 44px;}
  .hero h1{font-size:30px;}
  .hero-lead{font-size:16px;}
  .sec-head h2{font-size:26px;}
  .figure-block{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-bar{padding:26px;}
}
@media (max-width:767px){
  :root{--gap-sec:48px;}
  body{font-size:15px;}
  .wrap{padding:0 16px;}
  .hero h1{font-size:28px;}
  .hero-lead{font-size:15px;}
  .sec-head h2{font-size:22px;}
  .figure-body h2{font-size:22px;}
  .list-row h3{font-size:18px;}
  .checklist{padding:4px 18px;}
  .list-row{padding:20px 0;gap:14px;}
  .btn-main,.btn-ghost{width:100%;justify-content:center;}
  .hero-actions{flex-direction:column;align-items:stretch;gap:14px;}
  .hero-actions .link-underline{text-align:center;}
  .cta-bar{padding:22px;}
  .cta-bar h2{font-size:20px;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .hero-brand{font-size:12px;}
  .list-row{flex-direction:column;gap:10px;}
  .figure-media img{aspect-ratio:16/9;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  .btn-main:hover,.btn-ghost:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --brand:#1B5FD9; --brand-dark:#1149AE; --brand-soft:#E8F0FE;
  --accent:#FF7A1B; --accent-soft:#FFF1E6;
  --success:#12A150; --warn:#E5484D; --info-bg:#F2F7FF;
  --t1:#101828; --t2:#475467; --t3:#667085; --t4:#98A2B3;
  --border:#E4E9F2; --dash:#EEF2F8; --page:#F5F8FD; --card:#FFFFFF; --soft:#F8FAFD;
  --r-card:14px; --r-btn:10px; --r-img:12px;
  --sh:0 1px 2px rgba(16,24,40,.04), 0 12px 28px -12px rgba(16,24,40,.12);
  --sh-hover:0 18px 36px -14px rgba(27,95,217,.20);
  --sp:8px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0; background:var(--page); color:var(--t1);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px; line-height:1.8; font-weight:400; letter-spacing:0;
}
img{max-width:100%; height:auto; display:block;}
a{color:var(--brand); text-decoration:none; transition:color .2s ease, border-color .2s ease;}
a:hover{color:var(--brand-dark);}
button,input,select,textarea{font-family:inherit; font-size:inherit;}
h1,h2,h3,h4{margin:0; font-weight:700; color:var(--t1); letter-spacing:-.01em;}
h1{font-size:42px; line-height:1.25;}
h2{font-size:30px; line-height:1.35;}
h3{font-size:20px; line-height:1.5; font-weight:600;}
p{margin:0 0 .9em;}
ul,ol{margin:0 0 .9em; padding-left:1.4em; line-height:1.85; color:var(--t2);}
:focus-visible{outline:2px solid rgba(27,95,217,.35); outline-offset:2px; border-radius:4px;}
::selection{background:var(--brand-soft); color:var(--brand-dark);}
.skip-link{position:absolute; left:-9999px; top:0; background:var(--brand); color:#fff; padding:10px 16px; border-radius:0 0 10px 0; z-index:2000;}
.skip-link:focus{left:0; color:#fff;}

/* ---------- 布局骨架 ---------- */
.layout{display:flex; min-height:100vh; align-items:flex-start; background:var(--page);}
.sidebar{
  width:240px; flex:0 0 240px; background:var(--card); border-right:1px solid var(--border);
  position:sticky; top:0; height:100vh; overflow-y:auto; padding:0 16px 24px;
  display:flex; flex-direction:column; z-index:1030;
}
.brand{height:72px; display:flex; align-items:center; gap:10px; padding:0 6px; color:var(--t1);}
.brand:hover{color:var(--t1);}
.brand .mark{
  width:36px; height:36px; flex:0 0 36px; border-radius:10px; background:var(--brand);
  color:#fff; display:flex; align-items:center; justify-content:center; font-size:16px;
}
.brand .txt{line-height:1.25; min-width:0;}
.brand .txt strong{display:block; font-size:15px; font-weight:700; letter-spacing:-.01em;}
.brand .txt span{display:block; font-size:11px; color:var(--t4); letter-spacing:.04em;}
.menu-group{font-size:12px; letter-spacing:.08em; color:var(--t4); margin:16px 0 8px; padding-left:14px;}
.side-menu{display:flex; flex-direction:column; gap:4px;}
.menu-item{
  display:flex; align-items:center; gap:10px; height:44px; padding:0 14px; border-radius:10px;
  color:var(--t2); font-size:15px; position:relative; transition:background .2s ease, color .2s ease;
}
.menu-item i{font-size:14px; width:16px; text-align:center; color:var(--t4); transition:color .2s ease;}
.menu-item:hover{background:var(--brand-soft); color:var(--brand);}
.menu-item:hover i{color:var(--brand);}
.menu-item.active{background:var(--brand-soft); color:var(--brand); font-weight:600;}
.menu-item.active i{color:var(--brand);}
.menu-item.active::before{content:""; position:absolute; left:0; top:10px; bottom:10px; width:3px; border-radius:2px; background:var(--brand);}
.side-note{margin-top:auto; background:var(--info-bg); border-radius:12px; padding:16px; font-size:13px; line-height:1.7; color:var(--t2);}
.side-note p{margin:0 0 12px;}
.btn-mini{
  display:inline-flex; align-items:center; gap:6px; background:var(--brand); color:#fff; height:34px; padding:0 14px;
  border-radius:8px; font-size:13px; font-weight:600; border:1px solid var(--brand); transition:background .2s ease;
}
.btn-mini:hover{background:var(--brand-dark); color:#fff;}

.main-wrap{flex:1 1 auto; min-width:0; display:flex; flex-direction:column; min-height:100vh;}
.wrap{width:100%; max-width:1040px; margin:0 auto; padding:0 24px;}
main{flex:1 1 auto;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none; align-items:center; justify-content:space-between; gap:12px;
  height:60px; padding:0 16px; background:var(--card); border-bottom:1px solid var(--border);
  position:sticky; top:0; z-index:1040; transition:box-shadow .24s ease;
}
.topbar.scrolled{box-shadow:0 8px 20px -14px rgba(16,24,40,.35);}
.topbar .brand{height:auto; padding:0;}
.topbar .brand .mark{width:32px; height:32px; flex:0 0 32px; font-size:14px;}
.topbar .brand .txt span{display:none;}
.burger{
  width:42px; height:42px; border-radius:10px; border:1px solid var(--border); background:#fff;
  display:flex; align-items:center; justify-content:center; color:var(--t2); font-size:17px;
}
.burger:hover{border-color:var(--brand); color:var(--brand);}
.offcanvas{border-right:1px solid var(--border);}
.offcanvas-header{border-bottom:1px solid var(--border); padding:16px 20px;}
.offcanvas-body{padding:16px 20px 32px;}
.drawer .menu-item{height:48px; font-size:15.5px;}
.drawer .menu-item.active::before{display:none;}
.drawer .side-note{margin-top:24px;}
.offcanvas .btn-close:focus{box-shadow:none;}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px; color:var(--t3); padding:24px 0 0;}
.crumb a{color:var(--t3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{margin:0 8px; color:#C9D2E0;}
.crumb .now{color:var(--t2);}

/* ---------- Hero ---------- */
.hero{
  position:relative; margin-top:24px; border-radius:var(--r-card); overflow:hidden;
  background:#EFF5FF url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:56px 48px;
}
.hero::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(90deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.88) 52%, rgba(255,255,255,.46) 100%);
}
.hero-inner{position:relative; z-index:1; max-width:660px;}
.badge-tag{
  display:inline-flex; align-items:center; gap:8px; background:var(--brand-soft); color:var(--brand);
  font-size:12px; letter-spacing:.04em; padding:4px 10px; border-radius:999px; font-weight:600; margin-bottom:16px;
}
.hero h1{margin-bottom:14px;}
.hero .lead{font-size:17px; line-height:1.85; color:var(--t2); margin-bottom:24px;}
.hero-actions{display:flex; align-items:center; gap:20px; flex-wrap:wrap;}
.hero-meta{display:flex; gap:0; flex-wrap:wrap; margin-top:28px;}
.hero-meta .mi{display:flex; align-items:center; gap:8px; font-size:13px; color:var(--t2); padding-right:18px; margin-right:18px; border-right:1px solid var(--border);}
.hero-meta .mi:last-child{border-right:0; margin-right:0; padding-right:0;}
.hero-meta .mi i{color:var(--brand); font-size:13px;}

/* ---------- 通用按钮 ---------- */
.btn-main{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  background:var(--brand); color:#fff; border:1px solid var(--brand);
  height:48px; padding:0 22px; border-radius:var(--r-btn); font-size:16px; font-weight:600;
  transition:background .22s ease, transform .22s ease, box-shadow .22s ease;
}
.btn-main:hover{background:var(--brand-dark); border-color:var(--brand-dark); color:#fff; transform:translateY(-1px); box-shadow:0 12px 22px -12px rgba(27,95,217,.7);}
.btn-main:active{transform:none; box-shadow:none;}
.btn-ghost{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  background:#fff; border:1px solid var(--border); color:#344054;
  height:44px; padding:0 18px; border-radius:var(--r-btn); font-size:15px; font-weight:600;
  transition:border-color .22s ease, color .22s ease, transform .22s ease;
}
.btn-ghost:hover{border-color:var(--brand); color:var(--brand); transform:translateY(-1px);}
.btn-ghost:active{transform:none;}
.link-underline{color:var(--brand); font-weight:600; border-bottom:1px solid rgba(27,95,217,.4); padding-bottom:2px;}
.link-underline:hover{border-bottom-color:var(--brand); color:var(--brand-dark);}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section.alt{background:var(--card); border-top:1px solid var(--border); border-bottom:1px solid var(--border);}
.sec-head{margin-bottom:36px; max-width:760px;}
.sec-head .kicker{font-size:12px; letter-spacing:.08em; color:var(--brand); font-weight:600; margin-bottom:10px; display:block;}
.sec-head h2{margin-bottom:12px;}
.sec-head p{color:var(--t2); font-size:15.5px; line-height:1.85; margin:0;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative; padding-left:44px;}
.timeline::before{content:""; position:absolute; left:11px; top:10px; bottom:10px; width:2px; background:var(--border);}
.tl-item{position:relative; padding-bottom:44px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute; left:-44px; top:2px; width:24px; height:24px; border-radius:50%;
  background:var(--brand); color:#fff; font-size:12px; font-weight:600;
  display:flex; align-items:center; justify-content:center; box-shadow:0 0 0 5px var(--page);
}
.tl-item h3{margin-bottom:10px;}
.tl-item > p{color:var(--t2); font-size:15.5px; line-height:1.85; margin-bottom:14px;}
.tl-body{background:var(--card); border:1px solid var(--border); border-radius:var(--r-card); padding:22px 24px; box-shadow:var(--sh);}
.tl-body ul{margin:0; font-size:15px;}
.figure{margin:18px 0 0;}
.figure img{width:100%; aspect-ratio:16/9; object-fit:cover; border-radius:var(--r-img); background:var(--dash);}
.figcap{font-size:13px; color:var(--t3); text-align:center; margin-top:10px;}

/* ---------- 提示框 ---------- */
.notice{
  display:flex; gap:12px; align-items:flex-start; padding:16px 20px; border-radius:0 10px 10px 0;
  border-left:3px solid var(--brand); background:var(--info-bg); color:var(--t2);
  font-size:14.5px; line-height:1.75; margin:18px 0 0;
}
.notice i{color:var(--brand); margin-top:4px; font-size:15px;}
.notice.warn{border-left-color:var(--accent); background:var(--accent-soft);}
.notice.warn i{color:var(--accent);}
.notice strong{color:var(--t1);}

/* ---------- 验证方式轻卡 ---------- */
.method-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
.method-card{background:var(--soft); border:1px solid var(--border); border-radius:var(--r-card); padding:24px; transition:box-shadow .24s ease, transform .24s ease, border-color .24s ease;}
.method-card:hover{transform:translateY(-2px); box-shadow:var(--sh-hover); border-color:rgba(27,95,217,.35);}
.method-card .ic{width:40px; height:40px; border-radius:50%; background:var(--brand-soft); color:var(--brand); display:flex; align-items:center; justify-content:center; font-size:17px; margin-bottom:16px;}
.method-card h3{font-size:18px; margin-bottom:8px;}
.method-card p{font-size:14.5px; color:var(--t2); line-height:1.8; margin:0;}
.method-card .tagline{display:inline-block; margin-top:14px; font-size:12px; letter-spacing:.04em; color:var(--accent); background:var(--accent-soft); padding:4px 10px; border-radius:999px;}

/* ---------- 检查清单 ---------- */
.check-card{background:var(--card); border:1px solid var(--border); border-radius:var(--r-card); padding:30px; box-shadow:var(--sh);}
.check-card h3{margin-bottom:6px;}
.check-card .sub{font-size:14px; color:var(--t3); margin-bottom:14px;}
.check-list{list-style:none; margin:0; padding:0;}
.check-list li{display:flex; gap:14px; align-items:flex-start; padding:15px 0; border-bottom:1px dashed var(--dash); font-size:15.5px; color:var(--t1); line-height:1.7;}
.check-list li:last-child{border-bottom:0; padding-bottom:0;}
.check-box{width:20px; height:20px; flex:0 0 20px; border:1.5px solid rgba(27,95,217,.5); border-radius:6px; margin-top:4px; background:#fff;}
.check-list li span.note{display:block; font-size:13px; color:var(--t3); margin-top:2px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.accordion-item{border:1px solid var(--border); border-radius:12px; background:var(--card); margin-bottom:12px; overflow:hidden;}
.accordion-button{
  font-size:16px; font-weight:600; color:var(--t1); background:var(--card); padding:18px 22px;
  box-shadow:none !important; border-radius:12px !important;
}
.accordion-button:not(.collapsed){color:var(--brand); background:var(--card);}
.accordion-button::after{
  background-image:none; content:"\f107"; font-family:"Font Awesome 6 Free"; font-weight:900;
  width:auto; height:auto; font-size:14px; color:var(--t4); transition:transform .24s ease, color .24s ease;
}
.accordion-button:not(.collapsed)::after{color:var(--brand); transform:rotate(180deg);}
.accordion-body{padding:0 22px 20px; font-size:15px; line-height:1.8; color:var(--t2);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-soft); border-radius:var(--r-card); padding:30px 34px;
  display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap;
}
.cta-band .txt{max-width:560px;}
.cta-band h3{font-size:20px; margin-bottom:8px;}
.cta-band p{margin:0; font-size:14.5px; color:var(--t2); line-height:1.8;}
.back-row{padding:32px 0 0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--card); border-top:1px solid var(--border); padding:56px 0 28px; margin-top:24px;}
.footer-grid{display:grid; grid-template-columns:1.5fr 1fr 1fr 1.2fr; gap:32px;}
.fb-name{font-size:16px; font-weight:700; color:var(--t1); margin-bottom:10px;}
.fb-desc{font-size:14px; color:var(--t3); line-height:1.8; margin:0;}
.footer-col h4{font-size:14px; font-weight:600; color:var(--t1); margin-bottom:14px;}
.footer-col ul{list-style:none; padding:0; margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px; color:var(--t3);}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:14px; color:var(--t3); line-height:1.8; margin:0;}
.footer-bottom{
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  margin-top:36px; padding-top:20px; border-top:1px solid var(--border);
  font-size:13px; color:var(--t4);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  h1{font-size:38px;}
  .wrap{max-width:960px;}
}
@media (max-width:991.98px){
  .layout{display:block;}
  .sidebar{display:none;}
  .topbar{display:flex;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  .section{padding:64px 0;}
  .hero{padding:40px 32px;}
  .wrap{padding:0 20px;}
  .method-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr; gap:24px;}
}
@media (max-width:767.98px){
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .section{padding:48px 0;}
  .wrap{padding:0 16px;}
  .hero{padding:32px 20px; margin-top:16px;}
  .hero::after{background:linear-gradient(180deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.86) 60%, rgba(255,255,255,.7) 100%);}
  .hero .lead{font-size:15.5px;}
  .hero-meta .mi{border-right:0; padding-right:0; margin-right:0; width:100%; margin-bottom:8px;}
  .timeline{padding-left:34px;}
  .tl-dot{left:-34px; width:22px; height:22px; font-size:11px;}
  .timeline::before{left:10px;}
  .tl-body{padding:18px 18px;}
  .method-grid{grid-template-columns:1fr;}
  .check-card{padding:22px 20px;}
  .cta-band{padding:24px 20px;}
  .cta-band .btn-main{width:100%;}
  .footer-grid{grid-template-columns:1fr; gap:22px;}
  .btn-main{width:100%;}
  .hero-actions{gap:14px;}
  .hero-actions .link-underline{width:auto;}
}
@media (max-width:520px){
  .crumb{font-size:12.5px;}
  .sec-head{margin-bottom:24px;}
  .check-list li{font-size:15px;}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none !important; animation:none !important;}
}

/* roulang page: category3 */
:root{
  --blue:#1B5FD9; --blue-d:#1149AE; --blue-l:#E8F0FE;
  --orange:#FF7A1B; --orange-l:#FFF1E6;
  --green:#12A150; --red:#E5484D; --info-bg:#F2F7FF;
  --t1:#101828; --t2:#475467; --t3:#667085; --t4:#98A2B3;
  --border:#E4E9F2; --dash:#EEF2F8;
  --bg:#F5F8FD; --card:#FFFFFF; --soft:#F8FAFD;
  --r-card:14px; --r-btn:10px; --r-img:12px;
  --sh:0 1px 2px rgba(16,24,40,.04), 0 12px 28px -12px rgba(16,24,40,.12);
  --sh-h:0 18px 36px -14px rgba(27,95,217,.20);
  --sec:88px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; padding-bottom:80px;
  background:var(--bg); color:var(--t1);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px; line-height:1.8; -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block}
a{color:var(--blue); text-decoration:none}
a:hover{color:var(--blue-d)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:0; list-style:none}
button{font-family:inherit}
:focus-visible{outline:none; box-shadow:0 0 0 4px rgba(27,95,217,.35); border-radius:6px}
.skip{position:absolute; left:-9999px; top:0; background:#fff; padding:10px 16px; border-radius:0 0 10px 0; z-index:2000}
.skip:focus{left:0}

/* ============ 布局 ============ */
.layout{display:flex; align-items:flex-start; min-height:100vh}
.sidebar{
  position:sticky; top:0; height:100vh; flex:0 0 240px; width:240px;
  background:#fff; border-right:1px solid var(--border);
  padding:0 14px 20px; overflow-y:auto; display:flex; flex-direction:column; z-index:1040;
}
.main{flex:1; min-width:0; display:flex; flex-direction:column}
.wrap{max-width:1280px; margin:0 auto; padding:0 24px; width:100%}

/* ============ 侧栏品牌与菜单 ============ */
.brand{height:72px; display:flex; flex-direction:column; justify-content:center; padding:0 8px; text-decoration:none}
.brand .bn{font-size:15.5px; font-weight:700; color:var(--t1); letter-spacing:.01em; line-height:1.3}
.brand .bs{font-size:12px; color:var(--t4); margin-top:2px}
.brand:hover .bn{color:var(--blue)}
.menu-group{font-size:12px; letter-spacing:.08em; color:var(--t4); font-weight:600; margin:16px 0 8px; padding-left:14px}
.menu-item{
  display:flex; align-items:center; gap:10px; height:44px; padding:0 14px;
  border-radius:10px; font-size:14.5px; color:var(--t2); position:relative; transition:background .2s ease,color .2s ease;
}
.menu-item i{width:16px; font-size:14px; color:var(--t4); transition:color .2s ease}
.menu-item:hover{background:var(--blue-l); color:var(--blue)}
.menu-item:hover i{color:var(--blue)}
.menu-item.active{background:var(--blue-l); color:var(--blue); font-weight:600}
.menu-item.active i{color:var(--blue)}
.menu-item.active::before{content:""; position:absolute; left:0; top:9px; bottom:9px; width:3px; border-radius:3px; background:var(--blue)}
.side-card{margin-top:auto; background:var(--info-bg); border-radius:12px; padding:14px; font-size:13px; line-height:1.65; color:var(--t2)}
.side-card .btn-main{height:38px; font-size:13.5px; padding:0 14px; width:100%; margin-top:10px}

/* ============ 移动端顶栏 ============ */
.mobile-bar{display:none; align-items:center; justify-content:space-between; gap:12px; position:sticky; top:0; z-index:1030; background:#fff; border-bottom:1px solid var(--border); height:60px; padding:0 16px; transition:box-shadow .24s ease}
.mobile-bar.scrolled{box-shadow:0 8px 20px -14px rgba(16,24,40,.28)}
.mobile-bar .mb-brand{font-size:15px; font-weight:700; color:var(--t1); display:flex; flex-direction:column; line-height:1.25}
.mobile-bar .mb-brand span{font-size:11px; color:var(--t4); font-weight:400}
.mb-toggle{width:42px; height:42px; border:1px solid var(--border); background:#fff; border-radius:10px; color:var(--t1); font-size:16px}
.mb-toggle:hover{border-color:var(--blue); color:var(--blue)}
.offcanvas{width:290px}
.offcanvas-header{border-bottom:1px solid var(--border); padding:18px 18px}
.offcanvas-body{padding:12px}
.offcanvas .menu-item{height:48px}

/* ============ 面包屑 ============ */
.crumb{font-size:13px; color:var(--t3); padding:26px 0 0; display:flex; align-items:center; gap:8px; flex-wrap:wrap}
.crumb a{color:var(--t3)}
.crumb a:hover{color:var(--blue)}
.crumb .sep{color:var(--t4); font-size:12px}
.crumb .cur{color:var(--t4)}

/* ============ Hero ============ */
.page-hero{padding:20px 0 48px}
.hero-grid{display:grid; grid-template-columns:1.15fr .85fr; gap:44px; align-items:center}
.hero-kicker{display:inline-flex; align-items:center; gap:8px; background:var(--orange-l); color:#B8500B; font-size:12.5px; letter-spacing:.04em; padding:5px 12px; border-radius:999px; font-weight:600}
h1{font-size:42px; line-height:1.25; font-weight:700; margin:16px 0 16px; letter-spacing:-.01em}
.hero-lead{font-size:16.5px; line-height:1.85; color:var(--t2); max-width:620px}
.hero-facts{display:flex; flex-wrap:wrap; gap:0; margin-top:24px; border-top:1px dashed var(--dash); padding-top:18px}
.hero-facts li{font-size:13.5px; color:var(--t2); padding:0 18px; border-left:1px solid var(--border); line-height:1.5}
.hero-facts li:first-child{padding-left:0; border-left:0}
.hero-facts strong{display:block; font-size:20px; color:var(--blue); font-weight:700}
.hero-visual{position:relative; padding:18px; background:var(--blue-l); border-radius:18px}
.hero-visual img{width:100%; aspect-ratio:16/10; object-fit:cover; border-radius:var(--r-img); background:#EEF2F8; box-shadow:var(--sh)}
.hero-visual .hv-tag{position:absolute; left:34px; bottom:34px; background:rgba(255,255,255,.96); border:1px solid var(--border); border-radius:12px; padding:10px 14px; font-size:13px; color:var(--t2); box-shadow:var(--sh); display:flex; align-items:center; gap:8px}
.hero-visual .hv-tag i{color:var(--orange)}

/* ============ 区块 ============ */
.section{padding:0 0 var(--sec)}
.sec-head{margin-bottom:28px; max-width:760px}
.sec-head h2{font-size:30px; line-height:1.35; font-weight:700; margin-bottom:10px}
.sec-head p{font-size:15.5px; color:var(--t2)}

/* ============ 快速自查 ============ */
.check-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px}
.check-card{background:#fff; border:1px solid var(--border); border-radius:var(--r-card); padding:24px; box-shadow:var(--sh); transition:transform .24s ease, box-shadow .24s ease, border-color .24s ease}
.check-card:hover{transform:translateY(-2px); box-shadow:var(--sh-h); border-color:rgba(27,95,217,.35)}
.check-num{width:40px; height:40px; border-radius:12px; background:var(--blue-l); color:var(--blue); font-weight:700; font-size:15px; display:flex; align-items:center; justify-content:center; margin-bottom:16px}
.check-card h3{font-size:19px; font-weight:600; margin-bottom:8px}
.check-card p{font-size:14.5px; color:var(--t2); line-height:1.75}

/* ============ 两栏：目录 + 问答 ============ */
.split{display:grid; grid-template-columns:240px minmax(0,1fr); gap:36px; align-items:start}
.toc{position:sticky; top:24px; background:#fff; border:1px solid var(--border); border-radius:var(--r-card); padding:18px; box-shadow:var(--sh)}
.toc h2{font-size:13px; letter-spacing:.06em; color:var(--t4); font-weight:600; margin-bottom:10px}
.toc a{display:block; font-size:13.5px; color:var(--t2); padding:9px 10px; border-radius:8px; line-height:1.5; transition:background .2s ease, color .2s ease}
.toc a:hover{background:var(--blue-l); color:var(--blue)}
.toc a.active{background:var(--blue-l); color:var(--blue); font-weight:600}
.toc-note{margin-top:14px; padding-top:14px; border-top:1px dashed var(--dash); font-size:12.5px; color:var(--t3); line-height:1.7}

/* ============ 折叠问答 ============ */
.accordion{--bs-accordion-border-color:transparent}
.accordion-item{border:1px solid var(--border); border-radius:12px; background:#fff; overflow:hidden; margin-bottom:12px; box-shadow:var(--sh)}
.accordion-item:first-of-type,.accordion-item:last-of-type{border-radius:12px}
.accordion-button{
  padding:18px 20px; font-size:16px; font-weight:600; color:var(--t1); background:#fff;
  box-shadow:none !important; border-radius:12px !important; line-height:1.55;
  display:flex; align-items:center; gap:12px;
}
.accordion-button:hover{color:var(--blue)}
.accordion-button:not(.collapsed){color:var(--blue); background:#fff}
.accordion-button .qdot{flex:0 0 auto; width:24px; height:24px; border-radius:8px; background:var(--orange-l); color:#B8500B; font-size:12px; font-weight:700; display:flex; align-items:center; justify-content:center}
.accordion-button::after{
  width:16px; height:16px; background-size:16px; flex:0 0 16px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23667085'%3E%3Cpath d='M8 11.6 2.2 5.9l1.4-1.4L8 8.8l4.4-4.3 1.4 1.4L8 11.6Z'/%3E%3C/svg%3E");
}
.accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231B5FD9'%3E%3Cpath d='M8 11.6 2.2 5.9l1.4-1.4L8 8.8l4.4-4.3 1.4 1.4L8 11.6Z'/%3E%3C/svg%3E");
}
.accordion-body{padding:2px 20px 20px 56px; font-size:15px; line-height:1.85; color:var(--t2)}
.accordion-body .step-list{counter-reset:s; margin-bottom:12px}
.accordion-body .step-list li{position:relative; padding-left:26px; margin-bottom:8px}
.accordion-body .step-list li::before{
  counter-increment:s; content:counter(s); position:absolute; left:0; top:3px;
  width:18px; height:18px; border-radius:50%; background:var(--blue); color:#fff;
  font-size:11px; line-height:18px; text-align:center; font-weight:600;
}
.tip{display:flex; gap:10px; border-radius:0 10px 10px 0; padding:12px 16px; font-size:14px; line-height:1.75}
.tip-info{background:var(--info-bg); border-left:3px solid var(--blue); color:var(--t2)}
.tip-warn{background:var(--orange-l); border-left:3px solid var(--orange); color:#8A3E05}
.tip i{margin-top:4px}

/* ============ 排查矩阵 ============ */
.table-wrap{overflow-x:auto; border-radius:var(--r-card); background:#fff; border:1px solid var(--border); box-shadow:var(--sh)}
.matrix{width:100%; border-collapse:separate; border-spacing:0; font-size:14.5px; min-width:720px}
.matrix caption{text-align:left; padding:18px 20px 4px; font-size:13px; color:var(--t3)}
.matrix th{background:var(--soft); font-weight:600; color:var(--t1); text-align:left; padding:14px 20px; border-bottom:1px solid var(--border); white-space:nowrap}
.matrix td{padding:14px 20px; border-bottom:1px solid var(--dash); color:var(--t2); vertical-align:top}
.matrix tbody tr:nth-child(even) td{background:#FAFBFD}
.matrix tbody tr:last-child td{border-bottom:0}
.matrix .sig{color:var(--t1); font-weight:600}
.matrix .tag{display:inline-block; font-size:12px; letter-spacing:.04em; padding:3px 10px; border-radius:999px; background:var(--blue-l); color:var(--blue); font-weight:600}
.matrix .tag.warn{background:var(--orange-l); color:#B8500B}

/* ============ 相关内容卡 ============ */
.rel-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:22px}
.rel-card{display:flex; flex-direction:column; background:#fff; border:1px solid var(--border); border-radius:var(--r-card); overflow:hidden; box-shadow:var(--sh); transition:transform .24s ease, box-shadow .24s ease, border-color .24s ease}
.rel-card:hover{transform:translateY(-2px); box-shadow:var(--sh-h); border-color:rgba(27,95,217,.35)}
.rel-card img{width:100%; aspect-ratio:16/9; object-fit:cover; background:#EEF2F8}
.rel-body{padding:20px; display:flex; flex-direction:column; gap:10px; flex:1}
.rel-card h3{font-size:16.5px; font-weight:600; line-height:1.5; color:var(--t1); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden}
.rel-card p{font-size:14px; color:var(--t2); line-height:1.7; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden}
.rel-meta{margin-top:auto; display:flex; align-items:center; justify-content:space-between; font-size:13px; color:var(--t3); padding-top:10px; border-top:1px dashed var(--dash)}
.rel-meta .link{color:var(--blue); font-weight:600}
.rel-card:hover .link{color:var(--blue-d)}

/* ============ CTA 横条 ============ */
.cta-bar{background:var(--blue-l); border-radius:var(--r-card); padding:30px 34px; display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap}
.cta-bar h2{font-size:22px; font-weight:700; margin-bottom:8px}
.cta-bar p{font-size:14.5px; color:var(--t2); max-width:640px}
.cta-actions{display:flex; gap:12px; flex-wrap:wrap}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 22px; border-radius:var(--r-btn); font-size:16px; font-weight:600;
  transition:background .24s ease, color .24s ease, border-color .24s ease, transform .24s ease, box-shadow .24s ease;
  cursor:pointer; border:0; white-space:nowrap;
}
.btn-main{background:var(--blue); color:#fff}
.btn-main:hover{background:var(--blue-d); color:#fff; transform:translateY(-1px); box-shadow:0 12px 22px -12px rgba(27,95,217,.7)}
.btn-main:active{transform:none; box-shadow:none}
.btn-ghost{background:#fff; border:1px solid var(--border); color:#344054}
.btn-ghost:hover{border-color:var(--blue); color:var(--blue); transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn-sm{height:40px; font-size:14px; padding:0 16px}
.btn-text{color:var(--blue); font-weight:600; text-decoration:underline; text-underline-offset:3px}

/* ============ 底部固定转化条 ============ */
.float-cta{
  position:fixed; right:24px; bottom:24px; width:320px; z-index:1050;
  background:#fff; border:1px solid var(--border); border-radius:var(--r-card);
  box-shadow:0 18px 40px -18px rgba(16,24,40,.28), 0 2px 6px rgba(16,24,40,.05);
  padding:16px; display:flex; align-items:center; gap:12px;
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:opacity .28s ease, transform .28s ease, visibility .28s;
}
.float-cta.show{opacity:1; visibility:visible; transform:none}
.float-cta p{font-size:14px; color:var(--t2); line-height:1.6; flex:1}

/* ============ 页脚 ============ */
.site-footer{background:#fff; border-top:1px solid var(--border); margin-top:24px}
.footer-grid{display:grid; grid-template-columns:1.5fr 1fr 1fr 1.2fr; gap:36px; padding:56px 0 40px}
.fb-name{font-size:16.5px; font-weight:700; color:var(--t1); margin-bottom:12px}
.fb-desc{font-size:14px; color:var(--t3); line-height:1.8; max-width:330px}
.footer-col h4{font-size:14px; font-weight:600; color:var(--t1); margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px; color:var(--t3)}
.footer-col ul a:hover{color:var(--blue)}
.footer-col p{font-size:14px; color:var(--t3); line-height:1.8}
.footer-bottom{
  border-top:1px solid var(--border); padding:20px 0 28px;
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-size:13px; color:var(--t4);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-grid{gap:32px}
  h1{font-size:36px}
}
@media (max-width:991.98px){
  .sidebar{display:none}
  .mobile-bar{display:flex}
  .layout{display:block}
  .split{grid-template-columns:minmax(0,1fr); gap:20px}
  .toc{position:static; display:flex; gap:8px; overflow-x:auto; padding:12px; border-radius:12px}
  .toc h2{display:none}
  .toc a{white-space:nowrap; flex:0 0 auto; background:var(--soft); padding:8px 14px; border-radius:999px}
  .toc-note{display:none}
  .hero-grid{grid-template-columns:minmax(0,1fr); gap:28px}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr; gap:28px; padding:44px 0 32px}
  .section{padding-bottom:64px}
  .float-cta{
    right:0; left:0; bottom:0; width:100%; border-radius:0; border-left:0; border-right:0; border-bottom:0;
    padding:10px 16px; height:60px; transform:translateY(100%);
  }
  .float-cta.show{transform:none}
  .float-cta p{font-size:13px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  h1{font-size:28px}
  .sec-head h2{font-size:22px}
  .hero-lead{font-size:15.5px}
  .check-grid{grid-template-columns:minmax(0,1fr)}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .hero-facts li{padding:0 14px}
  .hero-facts strong{font-size:18px}
  .accordion-body{padding-left:20px}
  .cta-bar{padding:24px 20px}
  .cta-bar h2{font-size:19px}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-ghost{flex:1}
  .section{padding-bottom:48px}
  .footer-grid{grid-template-columns:minmax(0,1fr); padding:36px 0 28px}
  .footer-bottom{flex-direction:column; align-items:flex-start; gap:8px}
}
@media (max-width:575.98px){
  .hero-visual{padding:12px}
  .hero-visual .hv-tag{left:20px; bottom:20px; font-size:12px; padding:8px 12px}
  .btn-main,.btn-ghost{font-size:15px; height:44px; padding:0 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important; animation:none !important; scroll-behavior:auto !important}
}