/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --primary:#2A6FB0;
  --primary-dark:#1D5A94;
  --primary-light:#E8F1FA;
  --accent:#17A38C;
  --warn:#E08A3C;
  --bg:#ffffff;
  --bg-soft:#F3F7FB;
  --bg-hover:#EDF2F8;
  --footer-bg:#12365A;
  --ink:#10233A;
  --text:#3F5369;
  --muted:#6B7C90;
  --line:#E3EAF2;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,42,67,.05);
  --shadow-2:0 8px 24px rgba(16,42,67,.07);
  --shadow-3:0 16px 40px rgba(16,42,67,.10);
  --nav-w:248px;
  --container:1200px;
  --font-cn:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.has-sticky-bar{padding-bottom:64px;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,opacity .18s ease;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{color:var(--ink);font-weight:700;letter-spacing:-.01em;}
h1{font-size:clamp(30px,4vw,46px);line-height:1.25;}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
strong{color:var(--ink);}
::selection{background:var(--primary-light);color:var(--primary-dark);}
:focus-visible{outline:2px solid rgba(42,111,176,.35);outline-offset:2px;border-radius:6px;}

/* ============ 容器与栅格 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.layout{min-height:100vh;}
.main-wrap{margin-left:var(--nav-w);}
.section{padding:80px 0;}
.section--soft{background:var(--bg-soft);}
.section--tight{padding:56px 0;}

/* ============ 左侧竖向导航 ============ */
.site-header{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:22px 18px 18px;z-index:80;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(150deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center;
  letter-spacing:.5px;box-shadow:var(--shadow-2);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.02em;}
.brand-tag{font-size:11px;color:var(--muted);letter-spacing:.06em;}

.nav-panel{display:flex;flex-direction:column;flex:1;min-height:0;}
.side-nav{margin-top:28px;flex:1;overflow-y:auto;}
.nav-title{font-size:11px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;padding:0 12px 10px;}
.nav-list li{margin-bottom:4px;}
.nav-link{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:10px;
  font-size:14.5px;color:var(--text);font-weight:500;
  border-left:3px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.nav-link:hover{background:#F0F5FA;color:var(--primary-dark);}
.nav-link.is-active{
  background:var(--primary-light);color:var(--primary-dark);
  font-weight:700;border-left-color:var(--primary);
}
.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--line);flex:0 0 6px;transition:background-color .18s ease;}
.nav-link.is-active .nav-dot{background:var(--accent);}
.nav-link:hover .nav-dot{background:var(--primary);}

.side-foot{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.side-foot p{font-size:12.5px;color:var(--muted);line-height:1.7;margin-bottom:12px;}
.btn-block{width:100%;justify-content:center;}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--line);background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  cursor:pointer;text-align:center;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(42,111,176,.24);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(29,90,148,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 3px 10px rgba(29,90,148,.22);}
.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--primary);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 18px;font-size:14px;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
  text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;
}
.link-arrow:hover{color:var(--primary-dark);}
.link-arrow::after{content:"→";text-decoration:none;transition:transform .18s ease;}
.link-arrow:hover::after{transform:translateX(3px);}

/* ============ 通用标签/徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 11px;border-radius:999px;
  background:var(--primary-light);color:var(--primary-dark);
  font-size:12px;font-weight:600;letter-spacing:.01em;
}
.badge-accent{background:rgba(23,163,140,.12);color:#0E7A69;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 14px;border-radius:999px;
  background:var(--primary-light);color:var(--primary-dark);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}

/* ============ Hero ============ */
.hero{padding:64px 0 0;}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.hero-title{margin:20px 0 0;color:var(--ink);}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--text);max-width:520px;}
.hero-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:28px;}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:30px;padding-top:24px;border-top:1px dashed var(--line);}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);}
.trust-item i{
  width:18px;height:18px;border-radius:50%;flex:0 0 18px;
  background:rgba(23,163,140,.14);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-style:normal;font-weight:700;
}
.hero-visual{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-3);}
.hero-visual img{width:100%;height:400px;object-fit:cover;border-radius:18px;}
.hero-visual::after{
  content:"";position:absolute;inset:0;background:rgba(42,111,176,.08);
  border-radius:18px;pointer-events:none;
}
.hero-float{
  position:absolute;left:18px;bottom:18px;right:auto;
  background:#fff;border-radius:12px;padding:12px 16px;
  box-shadow:var(--shadow-3);display:flex;align-items:center;gap:12px;
  border:1px solid var(--line);
}
.hero-float b{font-size:22px;color:var(--primary);font-family:Inter,system-ui,sans-serif;line-height:1;}
.hero-float span{font-size:12.5px;color:var(--muted);line-height:1.5;}
.hero-divider{margin-top:56px;height:1px;background:var(--line);position:relative;}
.hero-divider::after{
  content:"";position:absolute;left:0;top:-1px;height:3px;width:120px;
  background:var(--primary);border-radius:999px;
}

/* ============ 卖点非对称三连 ============ */
.usp-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:24px;}
.usp-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.usp-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(42,111,176,.25);}
.usp-card--large{grid-row:span 2;padding:34px;background:var(--bg-soft);border-color:transparent;}
.usp-card--offset{margin-top:12px;}
.usp-num{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:var(--primary-light);color:var(--primary-dark);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:14px;font-family:Inter,system-ui,sans-serif;margin-bottom:18px;
}
.usp-card--large .usp-num{background:var(--primary);color:#fff;}
.usp-card h3{margin-bottom:10px;}
.usp-card p{font-size:15px;color:var(--text);line-height:1.85;}
.usp-card .link-arrow{margin-top:auto;padding-top:18px;}
.usp-media{margin-top:22px;border-radius:var(--radius-img);overflow:hidden;}
.usp-media img{width:100%;height:170px;object-fit:cover;}

/* ============ 场景步骤流 ============ */
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:15.5px;color:var(--text);}
.steps-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;}
.step{padding:0 22px;position:relative;}
.step:first-child{padding-left:0;}
.step:last-child{padding-right:0;}
.step::after{
  content:"";position:absolute;top:20px;right:-1px;width:calc(100% - 44px);
  height:1px;background:var(--line);left:44px;
}
.step:last-child::after{display:none;}
.step-num{
  width:40px;height:40px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--primary-dark);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;font-family:Inter,system-ui,sans-serif;
  position:relative;z-index:2;margin-bottom:18px;
}
.step:hover .step-num{background:var(--primary);color:#fff;border-color:var(--primary);transition:all .2s ease;}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;line-height:1.8;color:var(--text);}
.step-thumb{margin-top:16px;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);}
.step-thumb img{width:100%;height:112px;object-fit:cover;border-radius:0;}

/* ============ 数据条 + 短评 ============ */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:46px;}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-1);
}
.metric b{
  display:block;font-family:Inter,system-ui,sans-serif;font-weight:600;
  font-size:32px;line-height:1.1;color:var(--primary-dark);letter-spacing:-.02em;
}
.metric span{display:block;margin-top:8px;font-size:13.5px;color:var(--muted);}
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quote{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.quote p{font-size:14.8px;line-height:1.85;color:var(--text);margin-bottom:18px;}
.quote-user{display:flex;align-items:center;gap:12px;}
.avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 38px;
  background:var(--primary-light);color:var(--primary-dark);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.quote-user b{display:block;font-size:14px;color:var(--ink);}
.quote-user span{display:block;font-size:12.5px;color:var(--muted);}

/* ============ 资讯列表 ============ */
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(42,111,176,.25);}
.post-card__cover{display:block;border-bottom:1px solid var(--line);}
.post-card__cover img{width:100%;height:168px;object-fit:cover;border-radius:0;}
.post-card__body{padding:22px;display:flex;flex-direction:column;flex:1;}
.post-card__body h3{font-size:17.5px;line-height:1.55;margin:14px 0 10px;}
.post-card__body h3 a{color:var(--ink);}
.post-card__body h3 a:hover{color:var(--primary);}
.post-card__body p{font-size:14px;line-height:1.8;color:var(--text);margin-bottom:18px;}
.post-card__meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--muted);
}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:16px;background:var(--primary-light);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-size:24px;margin:0 auto 18px;
}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px;}
.empty-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ============ 分类入口 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.cat-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);height:100%;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(42,111,176,.3);}
.cat-icon{
  width:42px;height:42px;border-radius:12px;margin-bottom:18px;
  background:rgba(23,163,140,.12);color:#0E7A69;
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;
}
.cat-card h3{font-size:17.5px;margin-bottom:10px;color:var(--ink);}
.cat-card p{font-size:14px;line-height:1.8;color:var(--text);margin-bottom:18px;}
.cat-card .link-arrow{margin-top:auto;}

/* ============ FAQ ============ */
.faq{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(42,111,176,.25);}
.faq-item.is-open{border-color:rgba(42,111,176,.35);box-shadow:var(--shadow-2);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 24px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item.is-open .faq-q{color:var(--primary-dark);}
.faq-mark{
  width:8px;height:8px;flex:0 0 8px;border-radius:2px;background:var(--primary);opacity:.35;
  transition:opacity .2s ease,transform .2s ease;
}
.faq-item.is-open .faq-mark{opacity:1;transform:rotate(45deg);}
.faq-arrow{margin-left:auto;color:var(--muted);font-size:14px;transition:transform .2s ease;}
.faq-item.is-open .faq-arrow{transform:rotate(90deg);color:var(--primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-item.is-open .faq-a{max-height:460px;}
.faq-a-inner{padding:0 24px 22px 46px;border-top:1px solid var(--line);}
.faq-a-inner p{padding-top:16px;font-size:14.8px;line-height:1.85;color:var(--text);}

/* ============ 页脚前 CTA ============ */
.cta-band{
  background:var(--primary);border-radius:20px;padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 18px 40px rgba(42,111,176,.22);
}
.cta-band h2{color:#fff;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.85);font-size:15px;max-width:560px;}
.cta-band .btn{background:#fff;color:var(--primary-dark);}
.cta-band .btn:hover{background:#F0F5FA;color:var(--primary-dark);transform:translateY(-1px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.7);margin-top:80px;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);box-shadow:none;}
.footer-brand span{color:#fff;font-weight:700;font-size:15px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:rgba(255,255,255,.7);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ============ 底部固定转化条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:var(--primary);color:#fff;
  transform:translateY(120%);opacity:0;pointer-events:none;
  transition:transform .28s ease,opacity .28s ease;
  box-shadow:0 -6px 24px rgba(16,42,67,.16);
}
.sticky-bar.is-visible{transform:translateY(0);opacity:1;pointer-events:auto;}
.sticky-inner{
  max-width:var(--container);margin:0 auto;padding:10px 32px;
  min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.sticky-text{display:flex;align-items:center;gap:10px;font-size:14.5px;}
.sticky-text i{
  width:8px;height:8px;border-radius:50%;background:#7FE3D2;flex:0 0 8px;
  box-shadow:0 0 0 4px rgba(127,227,210,.22);
}
.sticky-bar .btn{background:#fff;color:var(--primary-dark);padding:11px 20px;font-size:14px;}
.sticky-bar .btn:hover{background:#EAF2FA;color:var(--primary-dark);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--nav-w:208px;}
  .container{padding:0 24px;}
  .hero-grid{gap:36px;}
  .cat-grid{grid-template-columns:repeat(2,1fr);}
}

@media (max-width:1023px){
  .site-header{
    position:sticky;top:0;left:0;right:0;bottom:auto;
    width:100%;height:64px;flex-direction:row;align-items:center;justify-content:space-between;
    padding:0 18px;border-right:none;border-bottom:1px solid var(--line);overflow:visible;
  }
  .brand-tag{display:none;}
  .nav-toggle{display:flex;}
  .nav-panel{
    position:fixed;top:64px;right:0;width:min(320px,88vw);
    height:calc(100vh - 64px);background:#fff;
    border-left:1px solid var(--line);box-shadow:var(--shadow-3);
    padding:20px 18px;overflow-y:auto;
    transform:translateX(105%);transition:transform .22s ease;
  }
  .nav-panel.is-open{transform:translateX(0);}
  .side-nav{margin-top:0;}
  .nav-link{padding:14px 12px;min-height:48px;}
  .side-foot{margin-top:24px;}
  .main-wrap{margin-left:0;}
  .hero{padding-top:44px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{order:-1;}
  .hero-visual img{height:280px;}
  .hero-sub{max-width:none;}
  .usp-grid{grid-template-columns:1fr;grid-template-rows:none;}
  .usp-card--large{grid-row:auto;}
  .usp-card--offset{margin-top:0;}
  .steps-flow{grid-template-columns:1fr;gap:26px;}
  .step{padding:0 0 0 22px;border-left:1px solid var(--line);}
  .step:first-child{padding-left:22px;}
  .step::after{display:none;}
  .step-num{position:absolute;left:-20px;top:0;margin-bottom:0;width:38px;height:38px;}
  .step{padding-top:4px;}
  .step-body{padding-top:0;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .quotes{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{padding:40px 30px;}
}

@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .hero{padding-top:34px;}
  h1{font-size:28px;}
  .hero-visual img{height:220px;}
  .hero-float{padding:10px 14px;}
  .hero-float b{font-size:19px;}
  .steps-flow{gap:22px;}
  .metrics{grid-template-columns:1fr 1fr;gap:14px;}
  .metric{padding:18px;}
  .metric b{font-size:26px;}
  .post-grid{grid-template-columns:1fr;}
  .cat-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 22px;border-radius:16px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 18px 18px;}
  .sticky-inner{padding:10px 18px;}
  .sticky-text{font-size:13px;}
}

@media (max-width:559px){
  .usp-card,.quote,.cat-card{padding:18px;}
  .post-card__body{padding:18px;}
  .sticky-text span{display:none;}
  .sticky-bar .btn{width:100%;justify-content:center;}
  .sticky-inner{flex-direction:column;align-items:stretch;gap:8px;padding:10px 16px 12px;}
  .sticky-text{justify-content:center;}
}

/* roulang page: category1 */
:root{
  --primary:#2A6FB0;
  --primary-dark:#1D5A94;
  --primary-light:#E8F1FA;
  --accent:#17A38C;
  --warn:#E08A3C;
  --bg:#FFFFFF;
  --bg-band:#F3F7FB;
  --bg-hover:#EDF2F8;
  --ink:#10233A;
  --text:#3F5369;
  --muted:#6B7C90;
  --line:#E3EAF2;
  --footer-bg:#12365A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,42,67,.05);
  --shadow-2:0 8px 24px rgba(16,42,67,.07);
  --shadow-3:0 16px 40px rgba(16,42,67,.10);
  --side-w:248px;
}

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

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;font-size:inherit;}

h1{
  font-size:clamp(30px,4vw,46px);
  line-height:1.25;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.4px;
}
h2{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.35;
  font-weight:700;
  color:var(--ink);
}
h3{
  font-size:20px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink);
}
p{color:var(--text);}

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

.page-shell{
  padding-left:var(--side-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

/* ---------- 左侧导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:#fff;
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:24px 18px 20px;
  overflow-y:auto;
  z-index:60;
}

.brand{
  display:flex;
  align-items:center;
  gap:11px;
  color:var(--ink);
}
.brand:hover{color:var(--ink);}
.brand-mark{
  flex:0 0 auto;
  width:38px;height:38px;
  border-radius:11px;
  background:linear-gradient(150deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;
  font-size:18px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{
  font-size:15px;
  font-weight:700;
  color:var(--ink);
}
.brand-tag{
  font-size:12px;
  color:var(--muted);
  margin-top:2px;
  letter-spacing:.3px;
}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:border-color .18s ease,background-color .18s ease;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--ink);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle:hover{border-color:var(--primary);background:var(--primary-light);}
.nav-toggle:focus-visible{outline:2px solid rgba(42,111,176,.35);outline-offset:2px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.nav-panel{
  display:flex;
  flex-direction:column;
  gap:20px;
  flex:1 1 auto;
}

.nav-title{
  font-size:12px;
  letter-spacing:2px;
  color:var(--muted);
  text-transform:uppercase;
  margin:0 0 10px 12px;
}

.nav-list{display:flex;flex-direction:column;gap:4px;}

.nav-link{
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 12px;
  border-radius:10px;
  border-left:3px solid transparent;
  font-size:15px;
  font-weight:500;
  color:var(--text);
}
.nav-link:hover{background:#F0F5FA;color:var(--ink);}
.nav-link:focus-visible{outline:2px solid rgba(42,111,176,.35);outline-offset:2px;}
.nav-link.is-active{
  background:var(--primary-light);
  color:var(--primary-dark);
  border-left-color:var(--primary);
  font-weight:600;
}
.nav-dot{
  flex:0 0 auto;
  width:6px;height:6px;
  border-radius:50%;
  background:currentColor;
  opacity:.45;
}

.side-foot{
  border-top:1px solid var(--line);
  padding-top:16px;
}
.side-foot p{
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
  margin-bottom:12px;
}

.nav-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(16,35,58,.42);
  opacity:0;
  transition:opacity .22s ease;
  z-index:55;
}
.nav-mask.is-open{opacity:1;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  text-align:center;
}
.btn:focus-visible{outline:2px solid rgba(42,111,176,.35);outline-offset:2px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:none;box-shadow:var(--shadow-1);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);}
.btn-ghost:active{transform:none;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-lg{padding:15px 30px;font-size:16px;}
.btn-block{width:100%;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  border-bottom:1px solid rgba(42,111,176,.35);
  padding-bottom:2px;
}
.link-arrow:hover{color:var(--primary-dark);border-bottom-color:var(--primary-dark);}
.link-arrow i{font-size:12px;transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 徽章 / 眉题 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:12px;
  font-weight:600;
  letter-spacing:.4px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}

.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:12px;
  font-weight:600;
}
.tag-accent{background:rgba(23,163,140,.12);color:#0E7A69;}
.tag-warn{background:rgba(224,138,60,.14);color:#A9611F;}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  background:var(--bg-band);
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:14px 0;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{
  content:"/";
  color:#B9C6D5;
  font-size:12px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:54px 0 60px;
  border-bottom:1px solid var(--line);
  background:#fff;
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:48px;
  align-items:center;
}
.hero h1{margin:18px 0 16px;}
.hero-lead{
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  max-width:560px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
  margin-top:26px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.hero-media{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  box-shadow:var(--shadow-3);
  aspect-ratio:3/2;
  background:var(--bg-band);
}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
}
.hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:rgba(42,111,176,.08);
}
.hero-media .media-note{
  position:absolute;
  left:16px;right:16px;bottom:16px;
  z-index:2;
  background:rgba(255,255,255,.94);
  border-radius:10px;
  padding:12px 14px;
  font-size:13px;
  line-height:1.6;
  color:var(--ink);
  box-shadow:var(--shadow-1);
}
.hero-rule{
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:var(--line);
}
.hero-rule::after{
  content:"";
  position:absolute;
  left:0;top:-1px;
  width:120px;height:3px;
  border-radius:3px;
  background:var(--primary);
}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0;}
.section-band{background:var(--bg-band);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--muted);line-height:1.85;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 图文交替 ---------- */
.alt-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:52px;
  align-items:center;
  padding:38px 0;
}
.alt-row + .alt-row{border-top:1px dashed var(--line);}
.alt-row.reverse .alt-text{order:2;}
.alt-row.reverse .alt-media{order:1;}
.alt-text h3{margin-bottom:12px;}
.alt-text > p{font-size:16px;line-height:1.9;}
.alt-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.alt-list li{
  position:relative;
  padding-left:28px;
  font-size:15px;
  line-height:1.75;
  color:var(--text);
}
.alt-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  left:0;top:2px;
  width:18px;height:18px;
  border-radius:6px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:10px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.alt-media{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  aspect-ratio:16/10;
  background:var(--bg-band);
  box-shadow:var(--shadow-2);
}
.alt-media img{width:100%;height:100%;object-fit:cover;}
.alt-index{
  position:absolute;
  top:14px;left:14px;
  z-index:2;
  min-width:34px;height:34px;
  padding:0 10px;
  border-radius:10px;
  background:rgba(255,255,255,.94);
  color:var(--primary-dark);
  font-size:14px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:var(--shadow-1);
}

/* ---------- 核对清单 ---------- */
.checklist-wrap{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);
  gap:36px;
  align-items:start;
}
.checklist{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.checklist li{
  display:flex;
  gap:16px;
  padding:18px 22px;
  border-bottom:1px solid var(--line);
  transition:background-color .18s ease;
}
.checklist li:last-child{border-bottom:0;}
.checklist li:hover{background:var(--bg-hover);}
.checklist .num{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:9px;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:13px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:2px;
}
.checklist .txt strong{
  display:block;
  font-size:16px;
  color:var(--ink);
  font-weight:600;
  margin-bottom:2px;
}
.checklist .txt span{font-size:14px;line-height:1.75;color:var(--muted);}

.notice{
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--warn);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
}
.notice h3{font-size:17px;margin-bottom:10px;}
.notice p{font-size:15px;line-height:1.85;color:var(--text);}
.notice .notice-foot{
  margin-top:16px;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--muted);
}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.stat-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 22px;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.stat-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:rgba(42,111,176,.28);
}
.stat-card .num{
  font-family:Inter,system-ui,-apple-system,sans-serif;
  font-size:34px;
  font-weight:700;
  line-height:1.1;
  color:var(--primary-dark);
  letter-spacing:-1px;
}
.stat-card .num small{font-size:15px;font-weight:600;margin-left:4px;color:var(--muted);letter-spacing:0;}
.stat-card .label{
  margin-top:10px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
}
.stat-card .desc{
  margin-top:6px;
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
}

/* ---------- CTA 通栏 ---------- */
.cta-band{padding:0 0 76px;}
.cta-card{
  background:var(--primary);
  border-radius:18px;
  padding:44px 46px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  box-shadow:var(--shadow-3);
}
.cta-card h2{color:#fff;font-size:clamp(22px,2.4vw,28px);margin-bottom:8px;}
.cta-card p{color:rgba(255,255,255,.86);font-size:15px;line-height:1.8;max-width:620px;}
.cta-card .btn-primary{
  background:#fff;
  color:var(--primary-dark);
  box-shadow:none;
}
.cta-card .btn-primary:hover{background:#EAF3FB;color:var(--primary-dark);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:auto;
  background:var(--footer-bg);
  color:#fff;
  padding:60px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-brand .brand-mark{
  width:34px;height:34px;
  border-radius:10px;
  font-size:16px;
  background:rgba(255,255,255,.14);
}
.site-footer p{
  color:rgba(255,255,255,.7);
  font-size:14px;
  line-height:1.85;
}
.site-footer h3{
  font-size:15px;
  color:#fff;
  margin-bottom:16px;
  font-weight:600;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  color:rgba(255,255,255,.72);
  font-size:14px;
}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.6);
}

/* ---------- 底部固定转化条 ---------- */
.convert-bar{
  position:fixed;
  left:var(--side-w);
  right:0;
  bottom:0;
  z-index:70;
  background:var(--primary);
  color:#fff;
  transform:translateY(100%);
  opacity:0;
  transition:transform .28s ease,opacity .28s ease;
  box-shadow:0 -6px 20px rgba(16,42,67,.14);
}
.convert-bar.is-show{transform:translateY(0);opacity:1;}
.convert-inner{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  min-height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
.convert-text{
  font-size:14px;
  color:rgba(255,255,255,.92);
  line-height:1.5;
}
.convert-text strong{color:#fff;font-weight:600;}
.convert-bar .btn{
  background:#fff;
  color:var(--primary-dark);
  padding:9px 18px;
  font-size:14px;
  white-space:nowrap;
}
.convert-bar .btn:hover{background:#EAF3FB;color:var(--primary-dark);transform:none;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  :root{--side-w:208px;}
  .hero-grid{gap:36px;}
  .alt-row{gap:38px;}
}

@media screen and (max-width:1023px){
  .site-header{
    position:sticky;
    top:0;left:auto;bottom:auto;
    width:100%;
    height:64px;
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:0 16px;
    border-right:0;
    border-bottom:1px solid var(--line);
    overflow:visible;
    box-shadow:var(--shadow-1);
  }
  .page-shell{padding-left:0;}
  .nav-toggle{display:inline-flex;}
  .brand-tag{display:none;}

  .nav-panel{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(86vw,360px);
    background:#fff;
    flex-direction:column;
    gap:20px;
    padding:78px 20px 24px;
    overflow-y:auto;
    box-shadow:var(--shadow-3);
    transform:translateX(105%);
    opacity:0;
    transition:transform .22s ease,opacity .22s ease;
    z-index:58;
  }
  .nav-panel.is-open{transform:translateX(0);opacity:1;}
  .nav-mask{display:block;pointer-events:none;}
  .nav-mask.is-open{pointer-events:auto;}
  .nav-link{padding:14px 12px;font-size:15px;min-height:48px;}

  .hero{padding:40px 0 46px;}
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .hero-lead{max-width:none;}
  .section{padding:56px 0;}
  .alt-row{grid-template-columns:1fr;gap:24px;padding:30px 0;}
  .alt-row.reverse .alt-text{order:1;}
  .alt-row.reverse .alt-media{order:2;}
  .checklist-wrap{grid-template-columns:1fr;gap:24px;}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-card{padding:34px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .convert-bar{left:0;}
}

@media screen and (max-width:767px){
  body{font-size:15px;}
  .container{padding:0 18px;}
  .hero h1{margin:14px 0 12px;}
  .hero-lead{font-size:16px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .hero-media{aspect-ratio:16/10;}
  .stat-card{padding:20px 18px;}
  .stat-card .num{font-size:28px;}
  .cta-band{padding-bottom:52px;}
  .cta-card{border-radius:14px;padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .cta-card .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}

@media screen and (max-width:559px){
  .container{padding:0 16px;}
  .stats{grid-template-columns:1fr;}
  .checklist li{padding:16px 16px;gap:12px;}
  .notice{padding:18px;}
  .convert-inner{padding:0 16px;min-height:58px;gap:12px;}
  .convert-text{font-size:13px;}
  .convert-bar .btn{padding:8px 14px;font-size:13px;}
  .alt-media{aspect-ratio:16/11;}
}

body.has-convert{padding-bottom:64px;}

/* roulang page: article */
:root{
  --primary:#2A6FB0;
  --primary-dark:#1D5A94;
  --primary-light:#E8F1FA;
  --accent:#17A38C;
  --warn:#E08A3C;
  --bg:#FFFFFF;
  --bg-soft:#F3F7FB;
  --bg-hover:#EDF2F8;
  --ink:#10233A;
  --text:#3F5369;
  --muted:#6B7C90;
  --line:#E3EAF2;
  --footer-bg:#12365A;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:999px;
  --r-img:12px;
  --sh1:0 1px 2px rgba(16,42,67,.05);
  --sh2:0 8px 24px rgba(16,42,67,.07);
  --sh3:0 16px 40px rgba(16,42,67,.10);
  --sidebar:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--primary-dark)}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(42,111,176,.45);outline-offset:2px;border-radius:6px}
::selection{background:rgba(42,111,176,.18)}

/* ---------- 布局骨架 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar);
  background:#fff;
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:24px 18px;
  overflow-y:auto;
  z-index:80;
}
.page-wrap{
  margin-left:var(--sidebar);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 品牌 ---------- */
.brand{display:flex;align-items:center;gap:10px;color:inherit}
.brand:hover{color:inherit}
.brand-mark{
  width:38px;height:38px;flex:none;border-radius:11px;
  background:var(--primary);color:#fff;
  display:grid;place-items:center;
  font-size:18px;font-weight:700;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand-name{font-size:15px;font-weight:700;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-tag{font-size:12px;color:var(--muted)}

/* ---------- 导航 ---------- */
.nav-toggle{
  display:none;
  flex-direction:column;justify-content:center;gap:4px;
  width:44px;height:44px;padding:0 10px;
  border:1px solid var(--line);border-radius:10px;background:#fff;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink);transition:background .18s ease}
.nav-toggle:hover{border-color:rgba(42,111,176,.4);background:var(--bg-soft)}
.nav-panel{display:flex;flex-direction:column;gap:18px;flex:1;min-height:0}
.nav-title{font-size:12px;letter-spacing:.14em;color:var(--muted);margin:0 0 8px;padding-left:12px}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  display:flex;align-items:center;gap:10px;
  min-height:44px;padding:0 12px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--text);
  border-left:3px solid transparent;
}
.nav-link:hover{background:#F0F5FA;color:var(--primary-dark);border-left-color:rgba(42,111,176,.35)}
.nav-link.is-active{background:var(--primary-light);color:var(--primary-dark);border-left-color:var(--primary);font-weight:600}
.nav-dot{width:6px;height:6px;border-radius:50%;background:#CBD8E6;flex:none;transition:background .18s ease}
.nav-link.is-active .nav-dot{background:var(--primary)}
.side-foot{margin-top:auto;background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:16px}
.side-foot p{font-size:13px;line-height:1.7;color:var(--muted);margin:0 0 12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;text-align:center;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:none;box-shadow:var(--sh1)}
.btn-ghost{background:#fff;color:var(--primary);border-color:rgba(42,111,176,.45)}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn-on-primary{background:#fff;color:var(--primary-dark);border-color:#fff}
.btn-on-primary:hover{background:#F1F7FD;color:var(--primary-dark);transform:translateY(-1px)}
.btn-on-primary:active{transform:none}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.62)}
.btn-outline-light:hover{background:rgba(255,255,255,.15);color:#fff;border-color:#fff}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:9px}
.btn-block{width:100%}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-badge);
  background:var(--primary-light);color:var(--primary-dark);
  font-size:12px;font-weight:600;line-height:1.7;white-space:nowrap;
}
.badge-accent{background:rgba(23,163,140,.12);color:#0E7C6B}
.badge-warn{background:rgba(224,138,60,.14);color:#B3691F}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:30px 0 0;font-size:13.5px;color:var(--muted);
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C7D3E0}
.breadcrumb .current{color:var(--text);max-width:min(520px,60vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章主体布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 292px;
  gap:40px;
  align-items:start;
  padding:18px 0 80px;
}
.article-main{max-width:800px;width:100%;min-width:0}
.article-head{padding:20px 0 26px;border-bottom:1px solid var(--line)}
.article-head h1{
  font-size:clamp(26px,3vw,36px);
  line-height:1.3;
  letter-spacing:-.01em;
  margin:0;
}
.article-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:12px;
}
.article-head .kicker i{width:16px;height:2px;border-radius:2px;background:var(--accent);display:block}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:20px;font-size:13.5px;color:var(--muted);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C7D3E0}

/* ---------- 正文排版 ---------- */
.article-body{padding:30px 0 6px;font-size:16.5px;line-height:1.9;color:var(--text)}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.2vw,26px);
  margin:42px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;
  width:4px;border-radius:2px;background:var(--primary);
}
.article-body h3{font-size:19px;font-weight:600;margin:28px 0 12px;color:var(--ink)}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--ink)}
.article-body p{margin:0 0 18px}
.article-body strong{color:var(--ink);font-weight:600}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--primary-dark)}
.article-body ul{margin:0 0 18px}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:3px;top:.82em;
  width:7px;height:7px;border-radius:50%;background:var(--accent);
}
.article-body ol{margin:0 0 18px;counter-reset:item}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:10px;counter-increment:item}
.article-body ol li::before{
  content:counter(item);
  position:absolute;left:0;top:.42em;
  width:20px;height:20px;border-radius:6px;
  background:var(--primary-light);color:var(--primary-dark);
  font-size:12px;font-weight:700;line-height:20px;text-align:center;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  border-left:3px solid var(--primary);
  background:var(--bg-soft);
  border-radius:0 12px 12px 0;
  color:#33506E;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:22px 0;width:100%;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:12.5px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.article-body thead th{background:var(--bg-soft);color:var(--ink);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFCFE}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body code{background:var(--bg-soft);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--primary-dark)}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;
  padding:56px 24px;
  background:var(--bg-soft);
  border:1px dashed #CFDCEA;
  border-radius:var(--r-card);
}
.empty-icon{
  display:grid;place-items:center;
  width:48px;height:48px;margin:0 auto 16px;
  border-radius:14px;background:#fff;border:1px solid var(--line);
  color:var(--warn);font-size:22px;font-weight:700;
}
.empty-state h2{font-size:20px;margin-bottom:10px}
.empty-state p{font-size:14.5px;color:var(--muted);max-width:520px;margin:0 auto 22px}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:28px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh1);
}
.side-card h2{font-size:15px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.side-card h2::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--accent)}
.side-card .lead{font-size:13.5px;color:var(--muted);margin:0 0 12px}
.tip-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--text);
  padding:10px 0;border-bottom:1px dashed var(--line);
}
.tip-list li:last-child{border-bottom:0;padding-bottom:0}
.tip-check{
  flex:none;width:18px;height:18px;margin-top:5px;
  border-radius:6px;background:rgba(23,163,140,.14);
  color:#0E7C6B;font-size:12px;font-weight:700;line-height:18px;text-align:center;
}
.quick-links li{margin-bottom:8px}
.quick-links a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:11px 13px;border:1px solid var(--line);border-radius:10px;
  font-size:14px;color:var(--text);background:#fff;
  transition:border-color .18s ease,background-color .18s ease,color .18s ease,transform .18s ease;
}
.quick-links a:hover{background:var(--bg-soft);border-color:rgba(42,111,176,.35);color:var(--primary-dark);transform:translateX(2px)}
.quick-links a span{color:var(--muted);font-size:13px}

/* ---------- 文末转化卡 ---------- */
.convert-card{
  margin:44px 0 0;
  background:var(--primary);
  border-radius:18px;
  padding:34px 32px;
  color:#fff;
  box-shadow:var(--sh2);
}
.convert-card h2{color:#fff;font-size:22px;margin-bottom:10px}
.convert-card p{color:rgba(255,255,255,.86);font-size:15px;line-height:1.8;margin:0 0 22px;max-width:620px}
.convert-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 相关推荐 ---------- */
.section-block{margin-top:52px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px}
.section-head h2{font-size:22px}
.section-head .more{font-size:14px;font-weight:500;white-space:nowrap}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:rgba(42,111,176,.28)}
.card-media{
  aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft);
  border-bottom:1px solid var(--line);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.5}
.card-body p{font-size:14px;color:var(--muted);line-height:1.75;margin:0;flex:1}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--muted);
  border-top:1px solid var(--line);padding-top:12px;
}

/* ---------- 返回入口 ---------- */
.back-links{display:flex;flex-wrap:wrap;gap:18px;margin-top:30px;font-size:14px}
.back-links a{display:inline-flex;align-items:center;gap:6px;font-weight:500}
.back-links a i{font-style:normal;color:var(--muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.72);padding:56px 0 28px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:6px}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:9px;background:rgba(255,255,255,.14);font-size:15px}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:14px}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);margin:12px 0 0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:40px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sidebar:208px}
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:26px}
  .article-main{max-width:none}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .site-header{
    position:sticky;top:0;left:0;bottom:auto;
    width:100%;height:auto;
    flex-direction:row;align-items:center;justify-content:space-between;
    gap:12px;padding:12px 18px;
    border-right:0;border-bottom:1px solid var(--line);
    overflow:visible;
    box-shadow:var(--sh1);
  }
  .page-wrap{margin-left:0}
  .nav-toggle{display:flex}
  .nav-panel{
    position:fixed;top:63px;right:0;
    width:min(340px,86vw);height:calc(100vh - 63px);
    background:#fff;border-left:1px solid var(--line);
    box-shadow:var(--sh3);
    padding:20px 18px;
    transform:translateX(100%);opacity:0;visibility:hidden;
    transition:transform .22s ease,opacity .22s ease,visibility .22s ease;
    overflow-y:auto;z-index:90;
  }
  .nav-panel.is-open{transform:none;opacity:1;visibility:visible}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:24px;padding-bottom:64px}
  .article-aside{position:static;order:-1;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .container{padding:0 20px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .breadcrumb{padding-top:22px;font-size:13px}
  .article-head{padding:16px 0 20px}
  .article-body{font-size:16px;padding-top:24px}
  .article-aside{grid-template-columns:minmax(0,1fr)}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .convert-card{padding:26px 22px;border-radius:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .back-links{gap:14px}
}
@media (max-width:559px){
  .container{padding:0 16px}
  .brand-name{font-size:14px}
  .brand-tag{font-size:11px}
  .card-body{padding:16px 18px 18px}
  .article-head h1{font-size:24px}
  .convert-actions .btn{width:100%}
  .convert-actions{flex-direction:column}
}

/* roulang page: category3 */
:root{
  --primary:#2A6FB0;
  --primary-dark:#1D5A94;
  --primary-light:#E8F1FA;
  --accent:#17A38C;
  --warn:#E08A3C;
  --warn-light:#FDF3E8;
  --bg:#FFFFFF;
  --band:#F3F7FB;
  --card-hover:#EDF2F8;
  --title:#10233A;
  --text:#3F5369;
  --muted:#6B7C90;
  --line:#E3EAF2;
  --footer:#12365A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,42,67,.05);
  --shadow-2:0 8px 24px rgba(16,42,67,.07);
  --shadow-3:0 16px 40px rgba(16,42,67,.10);
  --sidebar:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding:0 0 0 var(--sidebar);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block;height:auto}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid rgba(42,111,176,.45);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 28px}

/* ---------- 左侧竖向导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar);
  background:#fff;
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:24px 20px;
  overflow-y:auto;
  z-index:60;
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  border-radius:11px;
  background:linear-gradient(140deg,var(--primary),var(--accent));
  color:#fff;font-weight:700;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:1px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3}
.brand-name{font-size:15px;font-weight:700;color:var(--title);letter-spacing:.2px}
.brand-tag{font-size:12px;color:var(--muted)}
.nav-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:#fff;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--title);border-radius:2px;transition:.2s}
.nav-panel{display:flex;flex-direction:column;gap:22px;flex:1}
.nav-title{
  font-size:12px;letter-spacing:2px;color:var(--muted);
  text-transform:uppercase;font-weight:600;margin-bottom:2px;
}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  display:flex;align-items:center;gap:10px;
  min-height:48px;padding:10px 12px;
  border-radius:10px;
  color:var(--text);font-size:15px;font-weight:500;
  transition:background .18s ease,color .18s ease,transform .18s ease;
  position:relative;
}
.nav-link:hover{background:#F0F5FA;color:var(--primary)}
.nav-link.is-active{
  background:var(--primary-light);
  color:var(--primary);
  font-weight:600;
}
.nav-link.is-active::before{
  content:"";position:absolute;left:-20px;top:12px;bottom:12px;
  width:3px;border-radius:0 3px 3px 0;background:var(--primary);
}
.nav-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--line);flex:0 0 7px;transition:background .18s ease;
}
.nav-link:hover .nav-dot,.nav-link.is-active .nav-dot{background:var(--primary)}
.side-foot{
  margin-top:auto;
  background:var(--band);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:16px;
}
.side-foot p{font-size:13px;line-height:1.7;color:var(--muted);margin-bottom:12px}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(16,35,58,.42);
  opacity:0;visibility:hidden;transition:.24s;z-index:70;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark)}
.btn-sm{padding:10px 16px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
  border-bottom:1px solid rgba(42,111,176,.35);
  padding-bottom:2px;
}
.link-arrow:hover{border-bottom-color:var(--primary-dark);color:var(--primary-dark)}
.link-arrow i{font-size:12px;transition:transform .18s ease}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 主区域 ---------- */
.site-main{padding:34px 0 0}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:20px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{margin:0 8px;color:#C3D0DE}
.breadcrumb strong{color:var(--title);font-weight:600}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  border-radius:18px;
  overflow:hidden;
  border:1px solid var(--line);
  background:
    linear-gradient(100deg,rgba(42,111,176,.92) 0%,rgba(29,90,148,.86) 52%,rgba(23,163,140,.68) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  color:#fff;
  padding:52px 44px;
  margin-bottom:8px;
}
.page-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  font-size:12px;letter-spacing:.5px;margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.3;font-weight:700;color:#fff;
  max-width:820px;margin-bottom:16px;
}
.page-hero p.lede{
  font-size:16px;line-height:1.9;color:rgba(255,255,255,.92);
  max-width:760px;margin-bottom:24px;
}
.page-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.page-hero .btn-primary{background:#fff;color:var(--primary)}
.page-hero .btn-primary:hover{background:#F0F6FC;color:var(--primary-dark)}
.page-hero .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.page-hero .btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 26px;
  margin-top:26px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.24);
  font-size:13px;color:rgba(255,255,255,.86);
}
.hero-meta i{color:#9FE3D5;margin-right:7px}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0 0}
.section-band{
  background:var(--band);
  border-radius:18px;
  padding:44px 36px;
  margin-top:64px;
}
.section-head{max-width:760px;margin-bottom:34px}
.section-head .kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.6px;
  color:var(--accent);text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{
  font-size:clamp(22px,2.4vw,30px);line-height:1.4;
  font-weight:700;color:var(--title);margin-bottom:12px;
}
.section-head p{font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- 现象卡片 ---------- */
.type-card{
  height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.type-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(42,111,176,.35);background:#fff}
.type-card .t-icon{
  width:42px;height:42px;border-radius:12px;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:17px;
  margin-bottom:16px;
}
.type-card h3{font-size:17px;font-weight:600;color:var(--title);margin-bottom:10px;line-height:1.55}
.type-card p{font-size:14px;line-height:1.8;color:var(--text);margin-bottom:14px}
.type-card .tag-row{display:flex;flex-wrap:wrap;gap:8px}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:999px;
  background:var(--primary-light);color:var(--primary);
  font-size:12px;font-weight:600;line-height:1.5;
}
.badge-accent{background:rgba(23,163,140,.12);color:#0F7A69}
.badge-warn{background:var(--warn-light);color:#B26C24}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:6px}
.timeline-item{
  position:relative;
  padding:0 0 34px 68px;
}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:20px;top:46px;bottom:0;
  width:2px;background:var(--line);
}
.timeline-item:last-child::before{display:none}
.timeline-num{
  position:absolute;left:0;top:0;
  width:42px;height:42px;border-radius:50%;
  background:#fff;border:2px solid var(--primary);
  color:var(--primary);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;
}
.timeline-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.timeline-body:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.timeline-body h3{font-size:18px;font-weight:600;color:var(--title);margin-bottom:10px}
.timeline-body p{font-size:15px;line-height:1.85;color:var(--text);margin-bottom:12px}
.timeline-body .expect{
  display:flex;gap:10px;align-items:flex-start;
  padding:12px 14px;border-radius:10px;background:var(--band);
  font-size:13.5px;color:var(--muted);line-height:1.7;
}
.timeline-body .expect i{color:var(--accent);margin-top:4px}

/* ---------- 关键提示卡 ---------- */
.tip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tip-card{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--warn);
  border-radius:var(--radius-card);padding:22px 22px 22px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.tip-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.tip-card h3{
  font-size:16px;font-weight:600;color:var(--title);
  margin-bottom:10px;display:flex;align-items:center;gap:9px;
}
.tip-card h3 i{color:var(--warn);font-size:15px}
.tip-card p{font-size:14px;line-height:1.8;color:var(--text)}

/* ---------- 数据条 ---------- */
.stats-band{
  margin-top:64px;
  background:var(--footer);
  border-radius:18px;
  padding:38px 36px;
  color:#fff;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{border-left:2px solid rgba(255,255,255,.22);padding-left:18px}
.stat-item .num{
  font-family:"Inter",system-ui,sans-serif;
  font-size:30px;font-weight:700;color:#fff;line-height:1.2;letter-spacing:.5px;
}
.stat-item .num small{font-size:15px;font-weight:600;color:#8FD9CB;margin-left:4px}
.stat-item .desc{font-size:13.5px;color:rgba(255,255,255,.75);line-height:1.7;margin-top:8px}

/* ---------- 对照列表 ---------- */
.compare-list{display:flex;flex-direction:column;gap:16px}
.compare-row{
  display:grid;grid-template-columns:220px 1fr auto;gap:20px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 24px;box-shadow:var(--shadow-1);
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.compare-row:hover{border-color:rgba(42,111,176,.35);background:#FBFDFF;transform:translateX(3px)}
.compare-row .cue{font-size:15px;font-weight:600;color:var(--title);display:flex;align-items:center;gap:9px}
.compare-row .cue i{color:var(--primary);font-size:14px}
.compare-row .act{font-size:14.5px;color:var(--text);line-height:1.75}
.compare-row .go{font-size:13px;font-weight:600;color:var(--primary);white-space:nowrap}

/* ---------- 图文区块 ---------- */
.figure-block{
  display:grid;grid-template-columns:1.05fr 1fr;gap:34px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:28px;box-shadow:var(--shadow-1);
}
.figure-block .fig-media{
  border-radius:var(--radius-img);overflow:hidden;position:relative;
  border:1px solid var(--line);aspect-ratio:3/2;background:var(--band);
}
.figure-block .fig-media img{width:100%;height:100%;object-fit:cover}
.figure-block .fig-body h3{font-size:20px;font-weight:600;color:var(--title);margin-bottom:14px;line-height:1.5}
.figure-block .fig-body p{font-size:15px;line-height:1.85;color:var(--text);margin-bottom:16px}
.check-list{display:flex;flex-direction:column;gap:11px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;line-height:1.75;color:var(--text)}
.check-list li i{color:var(--accent);margin-top:5px;font-size:13px}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(42,111,176,.3)}
.faq-item.is-open{border-color:rgba(42,111,176,.45);box-shadow:var(--shadow-2)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;gap:14px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--title);
  line-height:1.6;min-height:56px;
}
.faq-q .q-mark{
  width:26px;height:26px;flex:0 0 26px;border-radius:8px;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;
}
.faq-item.is-open .faq-q .q-mark{background:var(--primary);color:#fff}
.faq-q span.q-text{flex:1}
.faq-q i.chev{font-size:13px;color:var(--muted);transition:transform .2s ease}
.faq-item.is-open .faq-q i.chev{transform:rotate(90deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{
  padding:4px 22px 20px 62px;
  font-size:14.5px;line-height:1.85;color:var(--text);
  border-top:1px solid var(--line);margin-top:0;padding-top:16px;
}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  margin-top:64px;
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-dark) 78%);
  border-radius:18px;
  padding:46px 40px;
  color:#fff;
  display:flex;flex-wrap:wrap;gap:24px;
  align-items:center;justify-content:space-between;
  box-shadow:var(--shadow-2);
}
.cta-band h2{font-size:clamp(21px,2.2vw,27px);font-weight:700;color:#fff;margin-bottom:10px}
.cta-band p{font-size:15px;color:rgba(255,255,255,.86);line-height:1.8;max-width:620px}
.cta-band .btn-primary{background:#fff;color:var(--primary)}
.cta-band .btn-primary:hover{background:#EFF6FC;color:var(--primary-dark)}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:76px;
  background:var(--footer);
  color:rgba(255,255,255,.78);
  padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:38px}
.site-footer h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;font-weight:700;font-size:16px}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:17px}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 底部固定转化条 ---------- */
.sticky-cta{
  position:fixed;left:var(--sidebar);right:0;bottom:0;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:10px 28px;min-height:60px;
  transform:translateY(102%);opacity:0;
  transition:transform .3s ease,opacity .3s ease;
  z-index:55;box-shadow:0 -8px 24px rgba(16,42,67,.14);
}
.sticky-cta.is-show{transform:translateY(0);opacity:1}
.sticky-cta .st-text{font-size:14px;font-weight:500;color:rgba(255,255,255,.95)}
.sticky-cta .st-text i{margin-right:8px;color:#9FE3D5}
.sticky-cta .btn{background:#fff;color:var(--primary);padding:10px 20px;font-size:14px}
.sticky-cta .btn:hover{background:#EAF3FB;color:var(--primary-dark);transform:none}
body.has-sticky{padding-bottom:74px}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sidebar:208px}
  .container{padding:0 22px}
  .page-hero{padding:44px 32px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:26px 20px}
  .tip-grid{grid-template-columns:repeat(2,1fr)}
  .compare-row{grid-template-columns:180px 1fr;row-gap:8px}
  .compare-row .go{grid-column:2;justify-self:start}
}
@media (max-width:1024px){
  :root{--sidebar:0px}
  body{padding-left:0;padding-top:62px}
  .site-header{
    position:fixed;top:0;left:0;right:0;bottom:auto;
    width:100%;height:62px;
    flex-direction:row;align-items:center;justify-content:space-between;
    padding:0 16px;border-right:0;border-bottom:1px solid var(--line);
    overflow:visible;gap:0;
  }
  .brand-name{font-size:14px}
  .brand-tag{font-size:11px}
  .nav-toggle{display:flex}
  body.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  body.nav-open .nav-toggle span:nth-child(2){opacity:0}
  body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .nav-panel{
    position:fixed;top:0;right:0;bottom:0;
    width:290px;max-width:86vw;
    background:#fff;padding:26px 20px;
    transform:translateX(103%);
    transition:transform .24s ease;
    box-shadow:-12px 0 34px rgba(16,42,67,.16);
    overflow-y:auto;z-index:80;gap:20px;
  }
  body.nav-open .nav-panel{transform:translateX(0)}
  body.nav-open .nav-backdrop{opacity:1;visibility:visible}
  .nav-link.is-active::before{left:-20px}
  .sticky-cta{left:0;padding:10px 16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .figure-block{grid-template-columns:1fr;gap:22px}
  .section{padding:52px 0 0}
  .section-band,.stats-band{padding:34px 24px;margin-top:52px}
  .cta-band{margin-top:52px;padding:36px 26px}
}
@media (max-width:768px){
  body{font-size:15px}
  .container{padding:0 18px}
  .page-hero{padding:34px 22px;border-radius:14px}
  .page-hero p.lede{font-size:15px}
  .hero-meta{gap:8px 18px;font-size:12.5px}
  .section-head h2{font-size:22px}
  .tip-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:20px 16px}
  .stat-item .num{font-size:24px}
  .timeline-item{padding-left:56px}
  .timeline-num{width:36px;height:36px;font-size:14px}
  .timeline-item::before{left:17px;top:40px}
  .compare-row{grid-template-columns:1fr;padding:18px 20px}
  .compare-row .go{grid-column:1}
  .faq-a-inner{padding-left:22px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .sticky-cta .st-text{font-size:13px;line-height:1.5}
}
@media (max-width:560px){
  .section{padding:44px 0 0}
  .section-band,.stats-band{padding:26px 18px;margin-top:44px}
  .type-card,.timeline-body,.tip-card{padding:18px}
  .timeline-num{width:32px;height:32px;font-size:13px}
  .timeline-item{padding-left:48px}
  .timeline-item::before{left:15px;top:36px}
  .stats-grid{grid-template-columns:1fr}
  .sticky-cta{min-height:58px;gap:10px}
  .sticky-cta .st-text{max-width:58%}
  .cta-band{padding:28px 18px;margin-top:44px}
  .footer-bottom{font-size:12px}
}

/* roulang page: category2 */
:root{
  --c-primary:#2A6FB0;
  --c-primary-d:#1D5A94;
  --c-primary-l:#E8F1FA;
  --c-teal:#17A38C;
  --c-warn:#E08A3C;
  --c-ink:#10233A;
  --c-text:#3F5369;
  --c-muted:#6B7C90;
  --c-line:#E3EAF2;
  --bg:#FFFFFF;
  --bg-soft:#F3F7FB;
  --bg-hover:#EDF2F8;
  --footer-bg:#12365A;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,42,67,.05);
  --shadow-2:0 8px 24px rgba(16,42,67,.07);
  --shadow-3:0 16px 40px rgba(16,42,67,.10);
  --sp-section:88px;
  --maxw:1200px;
  --font-cn:"HarmonyOS Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.has-sticky{padding-bottom:84px}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--c-ink);font-family:var(--font-cn);font-weight:700;line-height:1.35;letter-spacing:0}
h1{font-size:clamp(30px,4vw,46px);line-height:1.25}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35}
h3{font-size:20px;font-weight:600;line-height:1.5}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-d)}
figure{margin:0}
button{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid rgba(42,111,176,.35);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 布局骨架 ---------- */
.site-wrap{display:block;min-height:100vh}
.site-body{min-width:0;display:flex;flex-direction:column;min-height:100vh}
@media (min-width:1024px){
  .site-wrap{display:grid;grid-template-columns:248px minmax(0,1fr);align-items:start}
}
@media (min-width:1024px) and (max-width:1199px){
  .site-wrap{grid-template-columns:208px minmax(0,1fr)}
}

/* ---------- 左侧导航 / 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  height:64px;
  padding:0 18px;
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);min-width:0}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  flex:0 0 auto;
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:var(--c-primary);
  color:#fff;
  font-weight:700;
  font-size:17px;
  letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:16px;font-weight:700;color:var(--c-ink);line-height:1.3;white-space:nowrap}
.brand-tag{font-size:12px;color:var(--c-muted);line-height:1.4}
.nav-toggle{
  flex:0 0 auto;
  width:44px;height:44px;
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--c-line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  transition:background .18s ease,border-color .18s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .2s ease,opacity .2s ease}
.nav-toggle:hover{background:var(--bg-soft);border-color:#CFDCE9}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.nav-panel{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(330px,86vw);
  z-index:90;
  display:flex;flex-direction:column;gap:18px;
  padding:76px 18px 26px;
  background:#fff;
  box-shadow:var(--shadow-3);
  overflow-y:auto;
  transform:translateX(102%);
  transition:transform .22s ease;
}
body.nav-open .nav-panel{transform:translateX(0)}
.nav-title{font-size:12px;letter-spacing:.18em;color:var(--c-muted);margin:0 0 10px 4px}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  display:flex;align-items:center;gap:10px;
  min-height:48px;
  padding:10px 12px;
  border-radius:10px;
  border-left:3px solid transparent;
  font-size:15px;
  color:var(--c-text);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-link:hover{background:#F0F5FA;color:var(--c-ink)}
.nav-link.is-active{background:var(--c-primary-l);color:var(--c-primary-d);border-left-color:var(--c-primary);font-weight:600}
.nav-dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.4;flex:0 0 auto}
.nav-link.is-active .nav-dot{opacity:1;background:var(--c-primary)}
.side-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line)}
.side-foot p{font-size:13px;line-height:1.7;color:var(--c-muted);margin-bottom:12px}

@media (min-width:1024px){
  .site-header{
    height:100vh;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:20px;
    padding:24px 18px;
    border-right:1px solid var(--c-line);
    border-bottom:0;
    overflow:hidden;
  }
  .brand-tag{white-space:normal}
  .nav-toggle{display:none}
  .nav-panel{
    position:static;
    width:auto;flex:1;
    padding:0;
    transform:none;
    box-shadow:none;
    background:transparent;
    overflow-y:auto;
  }
}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  text-align:center;cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--c-primary);color:var(--c-primary-d)}
.btn-ghost:hover{background:var(--c-primary-l);color:var(--c-primary-d)}
.btn-light{background:#fff;color:var(--c-primary-d);border-color:#fff}
.btn-light:hover{background:#F2F8FE;color:var(--c-primary-d);transform:translateY(-1px)}
.btn-sm{padding:10px 16px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--c-primary-d);border-bottom:1px solid rgba(42,111,176,.35);padding-bottom:2px}
.link-arrow i{font-size:12px;transition:transform .18s ease}
.link-arrow:hover{border-bottom-color:var(--c-primary-d)}
.link-arrow:hover i{transform:translateX(3px)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);background:var(--c-primary-l);color:var(--c-primary-d);font-size:12px;font-weight:600;letter-spacing:.02em}
.badge-warn{background:#FDF1E5;color:#B96C1F}
.badge-teal{background:#E3F5F1;color:#0F7D6B}

/* ---------- Hero ---------- */
.hero{position:relative;background:#F7FAFD;padding:32px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:22px}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span.sep{color:#C3D1DE}
.breadcrumb .current{color:var(--c-ink);font-weight:600}
.hero-grid{padding-bottom:56px}
.hero-copy{padding-right:8px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 12px;margin-bottom:18px;
  border-radius:var(--r-pill);
  background:#fff;border:1px solid #D8E5F1;
  font-size:12.5px;color:var(--c-primary-d);font-weight:600;letter-spacing:.04em;
}
.hero h1{margin-bottom:16px}
.hero-sub{font-size:18px;line-height:1.75;color:var(--c-ink);font-weight:600;margin-bottom:14px}
.hero-lead{font-size:15.5px;line-height:1.9;color:var(--c-text);margin-bottom:26px;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-bottom:26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 18px}
.hero-trust li{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:var(--c-muted)}
.hero-trust i{color:var(--c-teal);font-size:12px}
.hero-media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--shadow-3);background:var(--bg-hover)}
.hero-media img{width:100%;aspect-ratio:3/2;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(42,111,176,.07);pointer-events:none}
.hero-media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:12px 16px;
  background:linear-gradient(180deg,rgba(16,42,67,0),rgba(16,42,67,.72));
  color:#fff;font-size:12.5px;line-height:1.6;
}
.hero-rule{position:relative;height:1px;background:var(--c-line)}
.hero-rule span{position:absolute;left:24px;top:-1px;display:block;width:120px;height:3px;border-radius:3px;background:var(--c-primary)}
@media (max-width:1023px){
  .hero-media{margin-top:28px}
}

/* ---------- 板块 ---------- */
.section{padding:var(--sp-section) 0}
.section-soft{background:var(--bg-soft)}
.section-head{max-width:760px;margin-bottom:40px}
.section-eyebrow{font-size:12.5px;font-weight:600;letter-spacing:.14em;color:var(--c-primary);margin-bottom:12px}
.section-head h2{margin-bottom:14px}
.section-sub{font-size:15.5px;line-height:1.9;color:var(--c-text)}

/* ---------- 对比卡 ---------- */
.compare-grid{align-items:stretch}
.compare-card{
  height:100%;
  display:flex;flex-direction:column;
  padding:0 0 26px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(42,111,176,.25)}
.compare-card.is-featured{border-color:rgba(42,111,176,.35);box-shadow:var(--shadow-2)}
.compare-media{border-bottom:1px solid var(--c-line);background:var(--bg-hover)}
.compare-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.compare-body{padding:24px 26px 0;display:flex;flex-direction:column;flex:1 1 auto}
.compare-card .badge{margin-bottom:14px;align-self:flex-start}
.compare-card h3{margin-bottom:10px;font-size:21px}
.compare-desc{font-size:15px;line-height:1.9;color:var(--c-text);margin-bottom:18px}
.tick-list{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}
.tick-list li{position:relative;padding-left:26px;font-size:15px;line-height:1.8;color:var(--c-text)}
.tick-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:1px;
  width:18px;height:18px;line-height:18px;text-align:center;
  border-radius:50%;background:var(--c-primary-l);color:var(--c-primary);
  font-size:9px;
}
.compare-note{
  margin-top:auto;
  display:flex;gap:10px;align-items:flex-start;
  padding:14px 16px;border-radius:10px;
  background:#FDF6EE;border-left:3px solid var(--c-warn);
  font-size:13.5px;line-height:1.75;color:#8A5A22;
}
.compare-note i{margin-top:4px;color:var(--c-warn);font-size:13px}

/* ---------- 场景卡 ---------- */
.scene-grid{align-items:stretch}
.scene-card{
  height:100%;
  display:flex;flex-direction:column;
  padding:26px 24px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease,background .2s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(42,111,176,.25);background:#FCFDFF}
.scene-icon{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-l);color:var(--c-primary);
  font-size:18px;margin-bottom:16px;
}
.scene-card h3{margin-bottom:10px}
.scene-card p{font-size:14.5px;line-height:1.9;color:var(--c-text);margin-bottom:16px}
.scene-card .link-arrow{margin-top:auto;font-size:14px}

/* ---------- 流程步骤 ---------- */
.steps-band{background:#fff;border:1px solid var(--c-line);border-radius:18px;box-shadow:var(--shadow-1);padding:34px 30px}
.steps-grid{align-items:stretch}
.step-item{position:relative;height:100%;padding:20px 18px 4px;border-radius:12px;transition:background .2s ease}
.step-item:hover{background:var(--bg-soft)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:26px;padding:0 10px;margin-bottom:14px;
  border-radius:var(--r-pill);
  background:var(--c-teal);color:#fff;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:17px;margin-bottom:8px}
.step-item p{font-size:14.5px;line-height:1.85;color:var(--c-text)}
.step-line{position:absolute;right:-6px;top:34px;width:12px;height:2px;border-radius:2px;background:#CFE0EF}
@media (max-width:1023px){.step-line{display:none}}

/* ---------- 清单区 ---------- */
.checklist{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:28px 26px;height:100%;
}
.checklist h3{font-size:18px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.checklist h3 i{color:var(--c-primary);font-size:15px}
.check-list{display:flex;flex-direction:column}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:13px 0;border-bottom:1px dashed #E7EEF6;
  font-size:15px;line-height:1.8;color:var(--c-text);
}
.check-list li:last-child{border-bottom:0}
.check-list i{color:var(--c-teal);font-size:14px;margin-top:5px}

/* ---------- FAQ ---------- */
.faq{list-style:none;margin:0;padding:0;border:1px solid var(--c-line);border-radius:var(--r-card);background:#fff;overflow:hidden;box-shadow:var(--shadow-1)}
.faq .accordion-item + .accordion-item{border-top:1px solid var(--c-line)}
.faq .accordion-title{
  display:flex;align-items:center;gap:14px;
  padding:20px 22px;
  font-size:16px;font-weight:600;color:var(--c-ink);
  background:#fff;
  cursor:pointer;
  transition:background .18s ease,color .18s ease;
}
.faq .accordion-title:hover{background:var(--bg-soft);color:var(--c-primary-d)}
.faq .accordion-item.is-active .accordion-title{color:var(--c-primary-d)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-l);color:var(--c-primary);font-size:12px;
}
.faq-caret{margin-left:auto;flex:0 0 auto;color:var(--c-muted);font-size:13px;transition:transform .2s ease,color .2s ease}
.faq .accordion-item.is-active .faq-caret{transform:rotate(90deg);color:var(--c-primary)}
.faq .accordion-content{
  display:none;
  padding:0 22px 22px 62px;
  border-top:1px solid var(--c-line);
  font-size:15px;line-height:1.9;color:var(--c-text);
}
.faq .accordion-content p + p{margin-top:10px}
.faq .accordion-item.is-active > .accordion-content{display:block}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:40px 42px;
  border-radius:18px;
  background:var(--c-primary);
  box-shadow:var(--shadow-2);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.2vw,28px);margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.85);font-size:15px;line-height:1.85;max-width:620px}

/* ---------- 底部固定转化条 ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:var(--c-primary);
  box-shadow:0 -8px 24px rgba(16,42,67,.16);
  transform:translateY(120%);
  transition:transform .28s ease;
}
.sticky-cta.is-visible{transform:translateY(0)}
.sticky-cta .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:62px;padding-top:8px;padding-bottom:8px}
.sticky-cta-text{font-size:14.5px;color:rgba(255,255,255,.92);line-height:1.6}
.sticky-cta .btn{white-space:nowrap;padding:11px 20px;font-size:14.5px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.76);padding:64px 0 0;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.16);font-size:15px}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72)}
.site-footer h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:52px;
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 24px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- Foundation 覆盖 ---------- */
.grid-x{display:flex;flex-flow:row wrap;align-items:flex-start}
.cell{flex:0 0 auto;min-width:0;width:100%}
.grid-x.grid-padding-x{margin-left:-12px;margin-right:-12px}
.grid-x.grid-padding-x > .cell{padding-left:12px;padding-right:12px}
.grid-x.align-middle{align-items:center}
.grid-x.align-stretch{align-items:stretch}
@media (min-width:768px){
  .cell.medium-6{width:50%}
  .cell.medium-4{width:33.3333%}
}
@media (min-width:1024px){
  .cell.large-6{width:50%}
  .cell.large-4{width:33.3333%}
  .cell.large-3{width:25%}
}
@media (min-width:1200px){
  .hero-grid > .hero-copy{width:52%}
  .hero-grid > .hero-media-cell{width:48%}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--sp-section:64px}
  .nav-title{margin-top:4px}
  .cta-band{padding:32px 26px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  :root{--sp-section:56px}
  .hero{padding-top:22px}
  .hero-sub{font-size:16.5px}
  .hero-lead{font-size:15px}
  .hero-actions{gap:14px}
  .hero-actions .btn{width:100%}
  .hero-actions .link-arrow{width:auto}
  .section-head{margin-bottom:28px}
  .compare-body{padding:20px 18px 0}
  .compare-card{padding-bottom:22px}
  .steps-band{padding:24px 18px}
  .checklist{padding:22px 18px}
  .faq .accordion-title{padding:17px 16px;font-size:15.5px}
  .faq .accordion-content{padding:0 16px 18px 52px;font-size:14.5px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{margin-top:36px}
}
@media (max-width:559px){
  .brand-tag{display:none}
  .sticky-cta .container{min-height:58px;gap:12px}
  .sticky-cta-text{font-size:12.5px;line-height:1.5}
  .sticky-cta .btn{padding:10px 14px;font-size:13.5px}
  .footer-grid{grid-template-columns:1fr}
  .cta-band h2{font-size:21px}
  body.has-sticky{padding-bottom:78px}
}

/* roulang page: category4 */
:root{
  --brand:#2A6FB0;
  --brand-dark:#1D5A94;
  --brand-light:#E8F1FA;
  --accent:#17A38C;
  --warn:#E08A3C;
  --ink:#10233A;
  --text:#3F5369;
  --muted:#6B7C90;
  --line:#E3EAF2;
  --bg:#FFFFFF;
  --bg-band:#F3F7FB;
  --bg-hover:#EDF2F8;
  --sidebar-w:248px;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,42,67,.05);
  --shadow-2:0 8px 24px rgba(16,42,67,.07);
  --shadow-3:0 16px 40px rgba(16,42,67,.10);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:Inter,"Helvetica Neue",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
h1,h2,h3,h4{color:var(--ink);font-weight:700}
h1{font-size:clamp(30px,4vw,46px);line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35}
h3{font-size:20px;line-height:1.5;font-weight:600}
a{color:var(--brand);text-decoration:none;transition:color .16s ease}
a:hover{color:var(--brand-dark)}
ul,ol{list-style:none}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:2px solid rgba(42,111,176,.45);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header / 左侧竖向导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:#fff;
  border-right:1px solid var(--line);
  padding:22px 16px 18px;
  display:flex;
  flex-direction:column;
  z-index:70;
  overflow-y:auto;
}
.brand{
  display:flex;align-items:center;gap:12px;
  padding:4px 6px 18px;
  border-bottom:1px solid var(--line);
  text-decoration:none;
}
.brand:hover{color:inherit}
.brand-mark{
  flex:none;width:40px;height:40px;border-radius:12px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.35;min-width:0}
.brand-name{font-size:15px;font-weight:700;color:var(--ink)}
.brand-tag{font-size:12px;color:var(--muted)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);border-radius:10px;
  background:#fff;cursor:pointer;
  flex-direction:column;justify-content:center;gap:5px;
  padding:0 11px;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-panel{display:flex;flex-direction:column;flex:1;min-height:0;padding-top:18px}
.nav-title{
  font-size:12px;letter-spacing:.12em;color:var(--muted);
  text-transform:uppercase;padding:0 12px 10px;font-weight:600;
}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:10px;
  font-size:15px;color:var(--text);
  transition:background .16s ease,color .16s ease;
}
.nav-link:hover{background:#F0F5FA;color:var(--brand-dark)}
.nav-link.is-active{background:var(--brand-light);color:var(--brand-dark);font-weight:600}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.nav-dot{width:6px;height:6px;border-radius:50%;background:#C6D4E2;flex:none;transition:background .16s ease}
.nav-link:hover .nav-dot,.nav-link.is-active .nav-dot{background:var(--brand)}
.side-foot{
  margin-top:26px;padding:18px 16px;
  background:var(--bg-band);border:1px solid var(--line);
  border-radius:var(--radius-card);
}
.side-foot p{font-size:13px;color:var(--muted);line-height:1.75;margin-bottom:14px}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(16,35,58,.42);
  opacity:0;pointer-events:none;transition:opacity .22s ease;z-index:85;
}
.nav-backdrop.is-open{opacity:1;pointer-events:auto}

/* ---------- 主体 ---------- */
.page-main{margin-left:var(--sidebar-w);display:flex;flex-direction:column;min-height:100vh}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);padding-top:26px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#B9C7D6}
.breadcrumb .current{color:var(--ink);font-weight:600}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:26px;
  padding:0 12px;border-radius:999px;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:13px;font-weight:600;letter-spacing:.01em;
}
.eyebrow i{color:var(--accent);font-size:12px}

/* hero */
.hero-cat{position:relative;background:var(--bg-band);border-bottom:1px solid var(--line);padding:30px 0 66px;overflow:hidden}
.hero-cat::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.12;
}
.hero-cat > .container{position:relative;z-index:1}
.hero-grid{margin:0 -16px;align-items:center}
.hero-grid > .cell{padding:0 16px}
.hero-copy h1{margin:18px 0 0}
.hero-lead{margin-top:18px;font-size:17px;line-height:1.9;color:var(--text);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:34px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.metric strong{display:block;font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--ink);line-height:1.3}
.metric span{font-size:13px;color:var(--muted)}
.hero-visual{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-3);aspect-ratio:16/11;background:#DDE7F1}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:rgba(42,111,176,.08)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark)}
.btn-light{background:#fff;color:var(--brand-dark)}
.btn-light:hover{background:#EAF2FA;color:var(--brand-dark);transform:translateY(-1px)}
.btn-sm{padding:10px 16px;font-size:14px}
.btn-block{display:flex;width:100%}

/* 板块 */
.section{padding:74px 0}
.section-band{background:var(--bg-band)}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{margin-top:14px}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.85}
.section-foot{margin-top:34px;display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted)}

/* 标签筛选 */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.filter-btn{
  padding:9px 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--text);
  font-size:14px;cursor:pointer;
  transition:background .16s ease,border-color .16s ease,color .16s ease;
}
.filter-btn:hover{border-color:rgba(42,111,176,.4);color:var(--brand-dark);background:#F7FAFD}
.filter-btn.is-active{background:var(--brand);border-color:var(--brand);color:#fff}

/* 不规则卡片瀑布 */
.falls{display:grid;grid-template-columns:repeat(6,1fr);gap:22px;grid-auto-flow:dense}
.fall-card{
  grid-column:span 2;
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
}
.fall-card.is-wide{grid-column:span 4}
.fall-card.is-tall{grid-column:span 3}
.fall-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(42,111,176,.25);background:var(--bg-hover)}
.fall-card .card-thumb{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);background:#DDE7F1}
.fall-card .card-thumb img{width:100%;height:100%;object-fit:cover}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.fall-card.is-wide .card-body{gap:14px}
.fall-card h3{font-size:17px;line-height:1.55}
.fall-card.is-wide h3{font-size:19px}
.fall-card p{font-size:15px;line-height:1.8;color:var(--text)}
.card-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.card-link{margin-top:auto;display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--brand)}
.card-link:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px}
.card-link i{font-size:12px;transition:transform .18s ease}
.card-link:hover i{transform:translateX(3px)}

.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--brand-light);color:var(--brand-dark);font-size:12px;font-weight:600}
.tag-accent{background:rgba(23,163,140,.12);color:#0F7A69}
.tag-warn{background:rgba(224,138,60,.15);color:#B0651E}

/* 准备清单 */
.steps{display:grid;gap:0;margin-top:8px}
.step{position:relative;padding:0 0 30px 62px}
.step:last-child{padding-bottom:0}
.step-num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:12px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-1);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--brand);
}
.step::after{content:"";position:absolute;left:20px;top:48px;bottom:10px;width:1px;background:var(--line)}
.step:last-child::after{display:none}
.step h3{font-size:18px}
.step p{margin-top:8px;font-size:15px;line-height:1.8}
.step-note{display:inline-flex;align-items:center;gap:7px;margin-top:10px;font-size:13px;color:var(--muted)}
.step-note i{color:var(--accent)}

/* 误区 */
.mistake-list{display:grid;gap:16px;margin-top:6px}
.mistake{
  display:flex;gap:16px;padding:22px 24px;
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--warn);
  border-radius:12px;box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.mistake:hover{box-shadow:var(--shadow-2);transform:translateY(-1px)}
.mistake-icon{
  flex:none;width:34px;height:34px;border-radius:10px;
  background:rgba(224,138,60,.15);color:#B0651E;
  display:flex;align-items:center;justify-content:center;font-size:14px;
}
.mistake h3{font-size:17px}
.mistake p{margin-top:6px;font-size:15px;line-height:1.8}

/* FAQ */
.faq{display:grid;gap:12px;margin-top:6px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-1);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item.is-open{border-color:rgba(42,111,176,.35);box-shadow:var(--shadow-2)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:20px 22px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q .q-left{display:flex;gap:12px;align-items:flex-start}
.q-icon{
  flex:none;width:24px;height:24px;border-radius:7px;margin-top:1px;
  background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:12px;
}
.faq-item.is-open .faq-q{color:var(--brand-dark)}
.faq-sign{flex:none;color:var(--muted);transition:transform .2s ease,color .2s ease;margin-top:3px}
.faq-item.is-open .faq-sign{transform:rotate(90deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{padding:16px 22px 22px 58px;border-top:1px solid var(--line);font-size:15.5px;line-height:1.9;color:var(--text)}

/* CTA 通栏 */
.cta-band{
  background:var(--brand);color:#fff;border-radius:18px;
  padding:52px 48px;display:grid;grid-template-columns:1.4fr .6fr;
  gap:28px;align-items:center;box-shadow:var(--shadow-3);
}
.cta-band h2{color:#fff}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.84);font-size:16px;line-height:1.85}
.cta-actions{display:flex;flex-direction:column;gap:12px}

/* 底部固定转化条 */
.sticky-cta{
  position:fixed;left:var(--sidebar-w);right:0;bottom:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--brand);color:#fff;padding:12px 24px;
  transform:translateY(110%);opacity:0;
  transition:transform .28s ease,opacity .28s ease;
  box-shadow:0 -6px 18px rgba(16,42,67,.12);
}
.sticky-cta.is-visible{transform:none;opacity:1}
.sticky-cta p{font-size:14px;color:rgba(255,255,255,.92);line-height:1.5}
.sticky-cta .btn{flex:none;padding:10px 20px;font-size:14px}
body.has-sticky .site-footer{padding-bottom:96px}

/* 页脚 */
.site-footer{background:#12365A;color:#fff;padding:64px 0 28px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:14px;color:#fff}
.site-footer .brand-mark{background:rgba(255,255,255,.16);color:#fff;width:36px;height:36px;border-radius:10px;font-size:16px}
.site-footer p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.85}
.site-footer h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links{display:grid;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sidebar-w:208px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:26px}
}
@media (max-width:1023.98px){
  .site-header{
    position:sticky;top:0;left:0;bottom:auto;
    width:100%;height:auto;flex-direction:row;align-items:center;justify-content:space-between;
    padding:10px 16px;border-right:0;border-bottom:1px solid var(--line);overflow:visible;
  }
  .brand{padding:0;border-bottom:0;gap:10px}
  .brand-tag{display:none}
  .nav-toggle{display:flex}
  .nav-panel{
    position:fixed;top:0;right:0;bottom:0;
    width:min(320px,86vw);height:100%;
    background:#fff;border-left:1px solid var(--line);box-shadow:var(--shadow-3);
    padding:24px 18px;z-index:90;overflow-y:auto;
    transform:translateX(104%);opacity:0;
    transition:transform .22s ease,opacity .22s ease;
  }
  .nav-panel.is-open{transform:none;opacity:1}
  .nav-link{padding:14px 12px;font-size:15.5px;min-height:48px}
  .page-main{margin-left:0}
  .sticky-cta{left:0}
  .falls{grid-template-columns:repeat(4,1fr)}
  .fall-card,.fall-card.is-tall{grid-column:span 2}
  .fall-card.is-wide{grid-column:span 4}
  .cta-band{grid-template-columns:1fr;padding:42px 32px}
  .cta-actions{flex-direction:row;flex-wrap:wrap}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .section{padding:52px 0}
  .hero-cat{padding:24px 0 48px}
  .hero-lead{font-size:16px}
  .hero-metrics{gap:22px;margin-top:26px}
  .hero-visual{aspect-ratio:16/10;margin-top:28px}
  .falls{grid-template-columns:1fr}
  .fall-card,.fall-card.is-wide,.fall-card.is-tall{grid-column:span 1}
  .fall-card h3,.fall-card.is-wide h3{font-size:17px}
  .step{padding-left:54px}
  .step-num{width:36px;height:36px}
  .step::after{left:18px;top:44px}
  .faq-a-inner{padding:16px 20px 20px 20px}
  .cta-band{padding:32px 24px;border-radius:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .sticky-cta{padding:11px 16px;gap:12px}
  .sticky-cta p{font-size:13px}
}
@media (max-width:559.98px){
  .container{padding:0 18px}
  .card-body{padding:18px}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .sticky-cta p{display:none}
  .sticky-cta .btn{width:100%}
  .sticky-cta{justify-content:center}
}