/* roulang page: index */
:root{
  --primary:#1F49C8;
  --primary-deep:#12296E;
  --primary-light:#E8EEFF;
  --accent:#FF7A1A;
  --accent-light:#FFF2E6;
  --bg:#F4F6FB;
  --card:#FFFFFF;
  --ink:#0E1729;
  --text:#46536B;
  --line:#E2E8F3;
  --success:#12A150;
  --warn:#E8A100;
  --error:#D92D20;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-1:0 10px 30px -12px rgba(18,41,110,.16);
  --shadow-2:0 18px 40px -14px rgba(18,41,110,.24);
  --shadow-3:0 24px 60px -20px rgba(18,41,110,.28);
  --gap-section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"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}
a:hover{color:var(--primary-deep)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;line-height:1.32;letter-spacing:0}
h1{font-size:42px}
h2{font-size:30px}
h3{font-size:20px}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
::selection{background:var(--primary-light);color:var(--primary-deep)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:70;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 22px -16px rgba(18,41,110,.5)}
.nav{display:flex;align-items:center;gap:20px;height:74px}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--ink);white-space:nowrap}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#fff;display:grid;place-items:center;font-size:17px;
  box-shadow:0 8px 18px -10px rgba(31,73,200,.9);
}
.logo-text small{display:block;font-size:11px;font-weight:500;color:var(--text);letter-spacing:.5px;line-height:1.2}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text);
  transition:color .18s,background .18s;
}
.nav-links a:hover{color:var(--primary);background:var(--primary-light)}
.nav-links a.active{color:var(--primary);font-weight:700}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;
  border-radius:999px;background:var(--primary);
}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  background:#fff;color:var(--ink);cursor:pointer;place-items:center;font-size:17px;
  transition:background .18s,border-color .18s;
}
.nav-toggle:hover{background:var(--primary-light);border-color:var(--primary-light);color:var(--primary)}
.nav-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 12px 24px -14px rgba(255,122,26,.95)}
.btn-accent:hover{background:#ef6b0c;color:#fff;transform:translateY(-1px);box-shadow:0 18px 30px -14px rgba(255,122,26,.9)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 12px 24px -16px rgba(31,73,200,.95)}
.btn-primary:hover{background:#1a3fb0;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline{border-color:var(--primary);color:var(--primary);background:#fff}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-deep);transform:translateY(-1px)}
.btn-white{background:#fff;color:var(--primary)}
.btn-white:hover{background:#eef2ff;color:var(--primary-deep);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none;box-shadow:none}

/* 板块与标题 */
.sec{padding:0}
.sec + .sec{margin-top:var(--gap-section)}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  margin-bottom:40px;
}
.sec-head h2{max-width:640px}
.sec-desc{max-width:420px;font-size:15px;color:var(--text)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;
  background:var(--primary-light);color:var(--primary);
  font-size:13px;font-weight:700;letter-spacing:.4px;
  margin-bottom:16px;
}
.eyebrow-accent{background:var(--accent-light);color:#c85b0a}

/* 首屏 */
.hero{
  padding:52px 0 0;
  background:linear-gradient(180deg,#FFFFFF 0%,#FFFFFF 42%,var(--bg) 100%);
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.32fr) minmax(0,1fr);gap:52px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--primary);
  font-size:13px;font-weight:700;margin-bottom:20px;
  box-shadow:0 6px 16px -12px rgba(18,41,110,.5);
}
.hero h1{font-size:44px;line-height:1.26;margin-bottom:20px}
.hero-sub{font-size:16.5px;line-height:1.9;color:var(--text);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 24px}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink)}
.hero-trust li i{color:var(--primary);font-size:15px}
.hero-visual{position:relative;padding-bottom:6px}
.hero-media{border-radius:20px;overflow:hidden;box-shadow:var(--shadow-3);position:relative}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(18,41,110,0) 35%,rgba(18,41,110,.55) 100%);
}
.hero-bg{width:100%;height:420px;object-fit:cover}
.hero-card{
  position:absolute;left:18px;right:18px;bottom:18px;
  background:#fff;border-radius:16px;padding:20px 22px;
  box-shadow:var(--shadow-3);
}
.hero-card-title{font-size:14px;font-weight:800;color:var(--primary);margin-bottom:14px;letter-spacing:.3px}
.hero-card ol{display:flex;flex-direction:column;gap:12px}
.hero-card li{display:flex;gap:12px;align-items:flex-start}
.hero-card .num{
  width:28px;height:28px;flex:none;border-radius:9px;
  background:var(--primary-light);color:var(--primary);
  display:grid;place-items:center;font-size:13px;font-weight:800;
}
.hero-card strong{display:block;font-size:14px;color:var(--ink);line-height:1.5}
.hero-card p{font-size:13px;line-height:1.6;color:var(--text)}

/* Bento 服务栅格 */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bento-card{
  background:var(--card);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);
  border:1px solid #edf1fa;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.bento-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#dfe7f8}
.bento-icon{
  width:46px;height:46px;border-radius:13px;
  display:grid;place-items:center;font-size:19px;
  background:var(--primary-light);color:var(--primary);margin-bottom:16px;
}
.bento-icon.accent{background:var(--accent-light);color:var(--accent)}
.bento-card h3{font-size:19px;margin-bottom:10px}
.bento-card p{font-size:14.5px;line-height:1.8}
.bento-lg{grid-column:span 6;background:linear-gradient(150deg,#ffffff 0%,#f5f8ff 100%)}
.bento-sm{grid-column:span 3}
.bento-md{grid-column:span 4}
.bento-lg h3{font-size:23px}
.bento-link{
  margin-top:auto;padding-top:18px;font-size:14px;font-weight:700;color:var(--primary);
  display:inline-flex;align-items:center;gap:8px;
}
.bento-link i{transition:transform .2s ease}
.bento-link:hover i{transform:translateX(4px)}
.bento-tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 4px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  background:var(--primary-light);color:var(--primary);
}
.tag-accent{background:var(--accent-light);color:#c85b0a}

/* 数据条 */
.band{
  background:var(--primary-deep);
  padding:60px 0;
  color:#fff;
  position:relative;
  overflow:hidden;
}
.band::before,.band::after{
  content:"";position:absolute;top:0;bottom:0;width:14%;pointer-events:none;
}
.band::before{left:0;background:linear-gradient(90deg,rgba(255,255,255,.10),rgba(255,255,255,0))}
.band::after{right:0;background:linear-gradient(270deg,rgba(255,255,255,.10),rgba(255,255,255,0))}
.band-title{
  font-size:14px;font-weight:700;letter-spacing:1.2px;
  color:rgba(255,255,255,.72);margin-bottom:28px;position:relative;
}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  position:relative;
}
.stat-item{border-left:2px solid rgba(255,255,255,.16);padding-left:22px}
.stat-num{
  font-size:44px;font-weight:800;line-height:1.1;
  color:var(--accent);letter-spacing:-1px;
  font-family:Inter,"PingFang SC",system-ui,sans-serif;
}
.stat-num span{font-size:18px;font-weight:700;margin-left:4px;color:#fff}
.stat-label{font-size:14px;color:rgba(255,255,255,.78);margin-top:8px;line-height:1.7}
.band-cta{margin-top:40px;position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.band-cta p{font-size:14.5px;color:rgba(255,255,255,.82);max-width:560px}

/* 最新信息 */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.news-more{
  font-size:14px;font-weight:700;color:var(--primary);
  display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
}
.news-more i{transition:transform .2s ease}
.news-more:hover i{transform:translateX(4px)}
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.news-card{
  background:#fff;border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);border:1px solid #edf1fa;
  transition:transform .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.news-link{display:flex;flex-direction:column;height:100%;color:inherit}
.news-link:hover{color:inherit}
.news-thumb{overflow:hidden;aspect-ratio:16/10;background:var(--primary-light)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{
  font-size:16.5px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-card:hover .news-body h3{color:var(--primary)}
.news-body p{
  font-size:13.8px;line-height:1.75;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.8px;color:#7b879e;
}
.news-meta .read{color:var(--primary);font-weight:700}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:700;width:fit-content;
}
.badge-primary{background:var(--primary-light);color:var(--primary)}
.badge-accent{background:var(--accent-light);color:#c85b0a}
.empty-state{
  grid-column:1/-1;background:#fff;border:1px dashed var(--line);
  border-radius:var(--radius-card);padding:56px 24px;text-align:center;
}
.empty-state i{font-size:34px;color:#c2cde6;display:block;margin-bottom:14px}
.empty-state p{font-size:15px;color:var(--text)}

/* 通用 CTA 横条 */
.cta-strip{
  margin-top:36px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  background:#fff;border-radius:var(--radius-card);
  padding:28px 32px;box-shadow:var(--shadow-1);
  border-left:4px solid var(--accent);
}
.cta-strip h3{font-size:20px;margin-bottom:6px}
.cta-strip p{font-size:14.5px;max-width:640px}

/* 案例 */
.case-row{display:grid;grid-template-columns:1.05fr 1fr;gap:52px;align-items:center}
.case-row + .case-row{margin-top:60px}
.case-row.reverse .case-media{order:2}
.case-media{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-1)}
.case-media img{width:100%;height:330px;object-fit:cover}
.case-badge{
  position:absolute;right:16px;bottom:16px;
  background:rgba(255,255,255,.95);color:var(--primary);
  font-size:12.5px;font-weight:700;padding:6px 14px;border-radius:999px;
  box-shadow:0 8px 20px -12px rgba(18,41,110,.7);
}
.case-copy h3{font-size:24px;margin-bottom:14px}
.case-copy > p{font-size:15px;margin-bottom:20px}
.dot-list{display:flex;flex-direction:column;gap:12px}
.dot-list li{
  position:relative;padding-left:26px;font-size:14.5px;line-height:1.75;
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:8px;height:8px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 4px var(--primary-light);
}
.dot-list li strong{color:var(--ink);font-weight:700}

/* 方案对比 */
.plan-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.plan-card{
  background:#fff;border-radius:var(--radius-card);padding:32px;
  box-shadow:var(--shadow-1);border:1px solid #edf1fa;
  display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.plan-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.plan-card--alt{background:linear-gradient(160deg,#ffffff 0%,#f6f9ff 100%);border-color:#dbe4f8}
.plan-card h3{font-size:22px;margin:14px 0 10px}
.plan-card > p{font-size:14.5px;margin-bottom:20px}
.check-list{display:flex;flex-direction:column;gap:11px;margin-bottom:26px}
.check-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7}
.check-list i{color:var(--success);font-size:15px;margin-top:5px;flex:none}
.plan-card .btn{align-self:flex-start;margin-top:auto}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto}
.faq-item{
  background:#fff;border-radius:14px;overflow:hidden;
  border:1px solid #edf1fa;box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item.open{box-shadow:var(--shadow-2);border-color:#dbe4f8}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 22px;background:#fff;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:700;color:var(--ink);line-height:1.55;
}
.faq-q:hover{color:var(--primary)}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:-2px}
.faq-q i{
  flex:none;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:13px;
  background:var(--primary-light);color:var(--primary);
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item.open .faq-q i{transform:rotate(45deg);background:var(--accent);color:#fff}
.faq-a{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height .28s ease,opacity .28s ease;
  background:var(--primary-light);
}
.faq-item.open .faq-a{opacity:1}
.faq-a p{padding:4px 22px 20px;font-size:14.8px;line-height:1.85;color:#333f57}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:32px;align-items:start}
.contact-form{
  background:#fff;border-radius:var(--radius-card);padding:32px;
  box-shadow:var(--shadow-1);border:1px solid #edf1fa;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.field label{font-size:14px;font-weight:700;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;min-height:46px;padding:11px 14px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fbfcfe;font-size:14.5px;color:var(--ink);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.75}
.field input::placeholder,.field textarea::placeholder{color:#9aa6bd}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:#fff;
  box-shadow:0 0 0 3px rgba(31,73,200,.14);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:var(--error);box-shadow:0 0 0 3px rgba(217,45,32,.12);
}
.field-err{font-size:12px;color:var(--error);margin:0;line-height:1.5}
.field-err[hidden]{display:none}
.check-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:22px}
.check-row input{width:18px;height:18px;margin-top:5px;accent-color:var(--primary);flex:none}
.check-row span{font-size:13.5px;line-height:1.7;color:var(--text)}
.form-note{
  margin-top:16px;padding:12px 16px;border-radius:var(--radius-btn);
  background:#eafaf1;border-left:4px solid var(--success);
  font-size:14px;color:#0d7a3d;
}
.form-note[hidden]{display:none}
.contact-side{
  background:linear-gradient(165deg,var(--primary-deep) 0%,#1b3c99 100%);
  border-radius:var(--radius-card);padding:30px;color:#fff;
  box-shadow:var(--shadow-2);
}
.contact-side h3{color:#fff;font-size:20px;margin-bottom:18px}
.info-list{display:flex;flex-direction:column;gap:18px;margin-bottom:26px}
.info-list li{display:flex;gap:14px;align-items:flex-start}
.info-list i{
  width:38px;height:38px;flex:none;border-radius:11px;
  display:grid;place-items:center;font-size:15px;
  background:rgba(255,255,255,.12);color:#fff;
}
.info-list strong{display:block;font-size:14.5px;color:#fff;font-weight:700}
.info-list span{font-size:13.5px;color:rgba(255,255,255,.76);line-height:1.7}
.contact-side img{width:100%;height:180px;object-fit:cover;border-radius:12px;margin-top:6px}

/* 页脚 */
.site-footer{background:var(--primary-deep);color:rgba(255,255,255,.78);margin-top:var(--gap-section);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-mark{background:rgba(255,255,255,.14);box-shadow:none}
.footer-brand span{font-size:18px;font-weight:800;color:#fff}
.site-footer p{font-size:13.8px;line-height:1.85;color:rgba(255,255,255,.66)}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:13.8px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-col li span{font-size:13.8px;color:rgba(255,255,255,.66);line-height:1.7}
.footer-bottom{
  margin-top:52px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* 移动端底部 Tab */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;
  grid-template-columns:repeat(5,1fr);
  background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -8px 24px -18px rgba(18,41,110,.55);
}
.mobile-tab a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:58px;font-size:11px;color:var(--text);font-weight:500;
  transition:color .18s ease;
}
.mobile-tab a i{font-size:20px}
.mobile-tab a.active{color:var(--primary);font-weight:700}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 4px 4px;background:var(--primary);
}

/* 响应式 */
@media (max-width:1199px){
  h1{font-size:38px}
  .hero h1{font-size:38px}
  .news-grid{grid-template-columns:repeat(3,1fr)}
  .bento-lg{grid-column:span 6}
  .bento-sm{grid-column:span 3}
  .bento-md{grid-column:span 4}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;}
  .footer-col:last-child{grid-column:span 3}
}
@media (max-width:991px){
  :root{--gap-section:64px}
  h1{font-size:32px}
  h2{font-size:26px}
  .nav-links{
    position:fixed;top:74px;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;
    padding:12px 20px 22px;gap:2px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-2);
  }
  .nav-links.is-open{display:flex}
  .nav-links a{padding:14px 14px;font-size:16px;border-radius:10px}
  .nav-links a.active::after{display:none}
  .nav-links a.active{background:var(--primary-light)}
  .nav-toggle{display:grid;margin-left:auto}
  .nav-cta{display:none}
  .hero{padding:36px 0 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15.5px}
  .bento-lg,.bento-sm,.bento-md{grid-column:span 6}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .case-row{grid-template-columns:1fr;gap:28px}
  .case-row.reverse .case-media{order:0}
  .case-media img{height:260px}
  .plan-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px}
  .sec-desc{max-width:100%}
}
@media (max-width:767px){
  :root{--gap-section:52px}
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom))}
  .mobile-tab{display:grid}
  h1{font-size:27px}
  h2{font-size:23px}
  h3{font-size:18px}
  .container{padding:0 18px}
  .hero{padding:28px 0 0}
  .hero h1{font-size:27px;line-height:1.34}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-bg{height:240px}
  .hero-card{left:12px;right:12px;bottom:12px;padding:16px}
  .hero-card ol{gap:10px}
  .hero-card strong{font-size:13.5px}
  .hero-card p{font-size:12.5px}
  .bento-lg,.bento-sm,.bento-md{grid-column:span 12}
  .bento-card{padding:22px}
  .band{padding:44px 0}
  .stat-num{font-size:36px}
  .stat-grid{grid-template-columns:1fr 1fr;gap:22px}
  .stat-item{padding-left:16px}
  .news-grid{grid-template-columns:1fr}
  .news-head{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-strip{padding:22px;flex-direction:column;align-items:flex-start}
  .cta-strip .btn{width:100%}
  .plan-card{padding:24px}
  .contact-form{padding:22px}
  .form-row{grid-template-columns:1fr}
  .contact-side{padding:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col:last-child{grid-column:span 2}
  .site-footer{padding:48px 0 0;margin-top:var(--gap-section)}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:480px){
  h1{font-size:24px}
  .hero h1{font-size:24px}
  .btn{height:46px;padding:0 18px;font-size:14.5px}
  .btn-sm{height:38px;padding:0 14px;font-size:13.5px}
  .stat-grid{grid-template-columns:1fr}
  .stat-num{font-size:32px}
  .footer-grid{grid-template-columns:1fr}
  .footer-col:last-child{grid-column:span 1}
  .faq-q{font-size:15px;padding:12px 16px}
  .faq-a p{padding:4px 16px 18px}
}

/* roulang page: article */
:root{
  --primary:#1F49C8;
  --primary-dark:#12296E;
  --primary-light:#E8EEFF;
  --accent:#FF7A1A;
  --accent-light:#FFF2E6;
  --bg:#F4F6FB;
  --surface:#FFFFFF;
  --ink:#0E1729;
  --muted:#46536B;
  --line:#E2E8F3;
  --success:#12A150;
  --warning:#E8A100;
  --error:#D92D20;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --shadow-1:0 10px 30px -12px rgba(18,41,110,.16);
  --shadow-2:0 18px 40px -14px rgba(18,41,110,.24);
  --shadow-3:0 24px 60px -20px rgba(18,41,110,.28);
  --section:88px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--muted);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -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(--accent)}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid transparent;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 8px 24px -18px rgba(18,41,110,.4)}
.nav{display:flex;align-items:center;gap:26px;height:72px}
.logo{display:flex;align-items:center;gap:12px;color:var(--ink);flex:0 0 auto}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--primary),var(--primary-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:0 10px 22px -12px rgba(31,73,200,.7);
}
.logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:800;line-height:1.2;letter-spacing:0}
.logo-text small{font-size:11px;font-weight:400;color:var(--muted);letter-spacing:1px;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;padding:10px 13px;border-radius:8px;
  font-size:15px;color:var(--muted);font-weight:500;white-space:nowrap;
}
.nav-links a:hover{color:var(--primary);background:var(--primary-light)}
.nav-links a.active{color:var(--primary);font-weight:700}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:3px;border-radius:999px;background:var(--primary);
}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:17px;
}
.nav-toggle:hover{background:var(--primary-light);color:var(--primary)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 12px 26px -14px rgba(255,122,26,.9)}
.btn-accent:hover{background:#ee6c0d;color:#fff;transform:translateY(-1px);box-shadow:0 18px 32px -14px rgba(255,122,26,.85)}
.btn-outline{background:#fff;color:var(--primary);border-color:#c9d6f6}
.btn-outline:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--primary-dark)}
.btn-light:hover{background:#f2f5ff;color:var(--primary-dark);transform:translateY(-1px)}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ============ 阅读进度 ============ */
.read-progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--accent);z-index:90;transition:width .12s linear}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#1a3aa8 0%,#12296E 62%,#0d1f57 100%);
  color:#fff;padding:44px 0 78px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.2;
}
.article-hero::after{
  content:"";position:absolute;right:-90px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,26,.32),rgba(255,122,26,0) 68%);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.85)}
.breadcrumb a:hover{color:#fff}
.breadcrumb i{font-size:10px;opacity:.7}
.breadcrumb span{color:#fff;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:var(--accent-light);color:#b8500a;font-size:13px;font-weight:700;margin-bottom:18px;
}
.article-hero h1{
  color:#fff;font-size:40px;line-height:1.32;max-width:920px;font-weight:800;
}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:24px;font-size:13.5px;color:rgba(255,255,255,.8)}
.meta-row span{display:inline-flex;align-items:center;gap:8px}
.meta-row i{color:var(--accent);font-size:13px}

/* ============ 摘要卡 ============ */
.article-shell{max-width:860px;margin:0 auto}
.summary-card{
  position:relative;margin-top:-42px;background:var(--surface);
  border-radius:var(--r-card);padding:26px 28px 24px 32px;box-shadow:var(--shadow-3);
  overflow:hidden;
}
.summary-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--accent)}
.summary-card h2{
  font-size:15px;color:var(--primary);display:flex;align-items:center;gap:8px;margin-bottom:10px;letter-spacing:.5px;
}
.summary-card p{font-size:15px;line-height:1.9;color:var(--muted)}

/* ============ 正文区 ============ */
.article-main{padding:56px 0 8px}
.article-body{background:var(--surface);border-radius:var(--r-card);padding:36px 40px 30px;box-shadow:var(--shadow-1);font-size:16px;line-height:1.9;color:var(--muted)}
.article-body p{margin:0 0 18px}
.article-body h2{font-size:27px;line-height:1.45;margin:42px 0 16px;padding-left:15px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:3px;background:var(--primary)}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:20px;margin:28px 0 12px;line-height:1.5}
.article-body h4{font-size:17px;margin:22px 0 10px}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 18px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px}
.article-body ul li::marker{color:var(--primary)}
.article-body ol li::marker{color:var(--primary);font-weight:700}
.article-body blockquote{
  margin:0 0 20px;padding:16px 22px;background:var(--accent-light);
  border-left:4px solid var(--accent);border-radius:0 12px 12px 0;color:var(--ink);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:6px 0 10px;width:100%;object-fit:cover}
.article-body figure{margin:0 0 22px}
.article-body figcaption{font-size:13px;color:#8592a8;margin-top:8px;text-align:center}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px;border-radius:12px;overflow:hidden;box-shadow:0 0 0 1px var(--line)}
.article-body th{background:var(--primary-light);color:var(--ink);text-align:left;padding:12px 14px;font-weight:700}
.article-body td{padding:12px 14px;border-top:1px solid var(--line);color:var(--muted)}
.article-body tr:nth-child(even) td{background:#fafbff}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--accent)}
.article-body code{background:#eef1f8;padding:2px 7px;border-radius:6px;font-size:14px;color:#2a3a63}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body strong{color:var(--ink)}

/* 通栏提示卡 */
.inline-note{
  display:flex;gap:16px;align-items:flex-start;margin:32px 0;
  background:var(--primary-light);border-radius:var(--r-card);padding:20px 22px;
}
.inline-note i{color:var(--primary);font-size:20px;margin-top:4px}
.inline-note h4{font-size:16px;margin-bottom:6px}
.inline-note p{margin:0;font-size:14.5px;color:#3b4a6b}

/* 空态 */
.empty-state{
  background:var(--surface);border-radius:var(--r-card);box-shadow:var(--shadow-1);
  padding:56px 28px;text-align:center;
}
.empty-state i{font-size:38px;color:#b7c3dd;margin-bottom:16px;display:block}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{max-width:460px;margin:0 auto 22px;font-size:15px}

/* 标签与翻页 */
.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:26px 0 0}
.tag-row .label{font-size:14px;color:var(--ink);font-weight:700;margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:600;
}
.tag:hover{background:var(--primary);color:#fff}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:30px}
.pager-card{
  display:flex;flex-direction:column;gap:8px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pager-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#c9d6f6}
.pager-card span{font-size:12.5px;color:#8592a8;letter-spacing:.5px}
.pager-card strong{font-size:16px;color:var(--ink)}
.pager-card:hover strong{color:var(--primary)}
.pager-card em{font-style:normal;font-size:13.5px;color:var(--muted)}

/* ============ 通用板块 ============ */
.section{padding:var(--section) 0}
.section-tight{padding:56px 0}
.section-head{max-width:640px;margin-bottom:38px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--primary);
  background:var(--primary-light);height:30px;padding:0 14px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:30px;line-height:1.4;margin-bottom:12px}
.section-head p{font-size:15.5px}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.card-media{position:relative;overflow:hidden;background:#dfe5f4}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease;border-radius:0}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-badge{
  position:absolute;left:14px;top:14px;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--primary);font-size:12px;font-weight:700;display:inline-flex;align-items:center;
}
.card-body h3{font-size:18px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-body h3{color:var(--primary)}
.card-body p{font-size:14.5px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:#8592a8}
.card-foot .more{color:var(--primary);font-weight:700}
.card-foot .more i{font-size:11px;margin-left:4px;transition:transform .2s ease}
.card:hover .card-foot .more i{transform:translateX(3px)}

/* ============ FAQ ============ */
.faq-list{background:var(--surface);border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:14px 24px;background:#fff;border:0;text-align:left;font-size:16px;font-weight:700;color:var(--ink);
  transition:background-color .18s ease;
}
.faq-q:hover{background:#f8faff;color:var(--primary)}
.faq-q .ico{
  width:26px;height:26px;flex:0 0 auto;border-radius:8px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:12px;transition:transform .2s ease,background-color .2s ease;
}
.faq-item.open .faq-q{color:var(--primary)}
.faq-item.open .faq-q .ico{background:var(--accent);color:#fff;transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;background:var(--primary-light)}
.faq-item.open .faq-a{max-height:340px}
.faq-a p{padding:16px 24px 20px;font-size:15px;line-height:1.9;color:#31405f;animation:fadeIn .24s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  background:linear-gradient(120deg,#1a3aa8,#12296E);
  color:#fff;padding:44px 46px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-3);
}
.cta-band::before{
  content:"";position:absolute;right:-70px;bottom:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,26,.34),rgba(255,122,26,0) 70%);
}
.cta-band > div{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;max-width:520px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* ============ 页脚 ============ */
.site-footer{background:var(--primary-dark);color:#c8d4f2;padding:64px 0 0;margin-top:var(--section)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-brand .logo-mark{background:linear-gradient(140deg,var(--accent),#d95f05);box-shadow:none}
.footer-col p{font-size:14px;line-height:1.9;color:#a9b8e0}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul li{font-size:14px;color:#a9b8e0}
.footer-col ul a{color:#c8d4f2}
.footer-col ul a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#9fb0dd;
}

/* ============ 移动端底部 Tab ============ */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -10px 26px -18px rgba(18,41,110,.5);
}
.mobile-tabbar .tab{
  position:relative;height:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  color:#8592a8;font-size:11px;
}
.mobile-tabbar .tab i{font-size:18px}
.mobile-tabbar .tab.active{color:var(--primary)}
.mobile-tabbar .tab.active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:26px;height:3px;border-radius:0 0 4px 4px;background:var(--primary)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-hero h1{font-size:34px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
}
@media (max-width:991px){
  :root{--section:64px}
  .nav-links{
    position:fixed;left:0;right:0;top:72px;bottom:0;margin:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:6px;padding:20px 24px 96px;
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:transform .22s ease,opacity .22s ease;
    overflow-y:auto;
  }
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{padding:15px 14px;font-size:16px;border-radius:10px}
  .nav-links a.active::after{display:none}
  .nav-toggle{display:flex;align-items:center;justify-content:center;order:3}
  .nav-cta{display:none}
  .article-body{padding:28px 24px 24px}
  .article-body h2{font-size:23px}
  .cta-band{padding:34px 26px}
  .cta-band h2{font-size:22px}
}
@media (max-width:767px){
  :root{--section:52px}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
  .container{padding:0 18px}
  .nav{height:64px;gap:14px}
  .logo-text{font-size:15px}
  .logo-text small{display:none}
  .nav-links{top:64px}
  .article-hero{padding:30px 0 64px}
  .article-hero h1{font-size:26px}
  .breadcrumb span{max-width:200px}
  .summary-card{padding:22px 20px 20px 24px}
  .article-main{padding:34px 0 4px}
  .article-body{font-size:16px;padding:24px 18px 20px;line-height:1.85}
  .article-body h2{font-size:21px;margin-top:32px}
  .article-body h3{font-size:18px}
  .article-body table{font-size:14px}
  .article-body th,.article-body td{padding:10px}
  .pager{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .section-head h2{font-size:24px}
  .faq-q{padding:14px 18px;font-size:15px}
  .faq-a p{padding:14px 18px 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{justify-content:flex-start}
  .mobile-tabbar{display:grid;grid-template-columns:repeat(4,1fr)}
  .cta-actions .btn{width:100%}
}
@media (max-width:479px){
  .article-hero h1{font-size:23px}
  .logo-text{font-size:14px}
  .btn{width:100%;padding:0 18px}
  .btn-sm{width:auto}
  .meta-row{gap:8px 16px;font-size:13px}
}

/* roulang page: category1 */
:root{
  --primary:#1F49C8;
  --primary-dark:#12296E;
  --primary-light:#E8EEFF;
  --accent:#FF7A1A;
  --accent-light:#FFF2E6;
  --bg:#F4F6FB;
  --surface:#FFFFFF;
  --ink:#0E1729;
  --text:#46536B;
  --line:#E2E8F3;
  --success:#12A150;
  --warning:#E8A100;
  --danger:#D92D20;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --radius-pill:999px;
  --shadow-1:0 10px 30px -12px rgba(18,41,110,.16);
  --shadow-2:0 18px 40px -14px rgba(18,41,110,.24);
  --shadow-3:0 24px 60px -20px rgba(18,41,110,.28);
  --container:1200px;
  --sec-gap:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"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);
  padding-bottom:0;
}
h1,h2,h3,h4{color:var(--ink);margin:0 0 14px;line-height:1.3;font-weight:800;letter-spacing:0;}
h1{font-size:44px;}
h2{font-size:30px;}
h3{font-size:21px;font-weight:700;}
h4{font-size:17px;font-weight:700;}
p{margin:0 0 16px;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-dark);}
img{max-width:100%;display:block;border-radius:var(--radius-img);object-fit:cover;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sec-gap) 0;}
.section-tight{padding:56px 0;}
.section-alt{background:var(--surface);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--primary);
  background:var(--primary-light);border-radius:var(--radius-pill);
  padding:6px 14px;margin-bottom:14px;
}
.section-sub{max-width:760px;font-size:15.5px;color:var(--text);margin:0;}
.text-accent{color:var(--accent);}

/* ============ 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:700;line-height:1;
  transition:all .2s ease;white-space:nowrap;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 24px -12px rgba(255,122,26,.75);}
.btn-accent:hover{background:#ee6a09;color:#fff;transform:translateY(-1px);box-shadow:0 16px 30px -12px rgba(255,122,26,.8);}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary);}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--primary-dark);}
.btn-light:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-1px);}
.btn-ghost-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6);}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-lg{padding:16px 30px;font-size:16px;}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-text{color:var(--primary);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px;}
.btn-text:hover{gap:10px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px -12px rgba(18,41,110,.28);}
.nav{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;
}
.logo-text{display:flex;flex-direction:column;color:var(--ink);font-weight:800;font-size:17px;line-height:1.2;}
.logo-text small{font-size:11.5px;font-weight:500;color:#7A869E;letter-spacing:.4px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1;}
.nav-links a{
  position:relative;padding:10px 12px;border-radius:8px;
  font-size:15px;font-weight:600;color:#3A4763;transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--primary);background:#F5F8FF;}
.nav-links a.active{color:var(--primary);}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:3px;
  border-radius:3px;background:var(--primary);
}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:var(--primary-light);color:var(--primary);font-size:18px;
}

/* ============ 面包屑 ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:#7A869E;padding:14px 0;flex-wrap:wrap;}
.crumb a{color:#5B6884;}
.crumb a:hover{color:var(--primary);}
.crumb i{font-size:10px;color:#AEB8CC;}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(105deg,rgba(11,26,72,.94) 0%,rgba(18,41,110,.86) 46%,rgba(31,73,200,.62) 100%),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.page-hero .container{position:relative;z-index:2;padding-top:66px;padding-bottom:62px;}
.hero-cols{display:grid;grid-template-columns:1.35fr .95fr;gap:44px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  font-size:13px;font-weight:700;margin-bottom:18px;
}
.page-hero h1{color:#fff;margin-bottom:16px;}
.hero-lead{font-size:16.5px;color:rgba(255,255,255,.88);max-width:640px;margin-bottom:0;}
.hero-lead + .hero-lead{margin-top:10px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px;}
.hero-facts{display:flex;gap:26px;flex-wrap:wrap;margin-top:28px;}
.hero-fact{display:flex;align-items:center;gap:9px;font-size:13.5px;color:rgba(255,255,255,.9);}
.hero-fact i{color:var(--accent);font-size:15px;}
.hero-card{
  background:#fff;color:var(--ink);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-3);
}
.hero-card h3{font-size:17px;margin-bottom:6px;}
.hero-card > p{font-size:13.5px;color:#7A869E;margin-bottom:18px;}
.step-row{display:flex;gap:14px;padding:12px 0;border-top:1px dashed var(--line);}
.step-row:first-of-type{border-top:0;}
.step-no{
  width:30px;height:30px;flex-shrink:0;border-radius:9px;background:var(--primary-light);
  color:var(--primary);font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;
}
.step-row strong{display:block;font-size:15px;color:var(--ink);margin-bottom:2px;}
.step-row span{font-size:13.5px;color:#6C7A94;line-height:1.6;display:block;}

/* ============ 锚点快捷条 ============ */
.anchor-bar{background:#fff;border-bottom:1px solid var(--line);}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none;}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-scroll a{
  flex:0 0 auto;padding:9px 16px;border-radius:var(--radius-pill);
  background:#F1F4FB;color:#3A4763;font-size:14px;font-weight:600;white-space:nowrap;
  transition:all .18s ease;
}
.anchor-scroll a:hover{background:var(--primary-light);color:var(--primary);}
.anchor-scroll a.on{background:var(--primary);color:#fff;}

/* ============ 通用卡片 ============ */
.card{
  background:var(--surface);border-radius:var(--radius-card);padding:26px;
  box-shadow:var(--shadow-1);border:1px solid rgba(226,232,243,.8);
  transition:transform .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.card-icon{
  width:46px;height:46px;border-radius:13px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px;
}
.card-icon.is-accent{background:var(--accent-light);color:var(--accent);}
.card p{font-size:14.5px;margin-bottom:0;color:var(--text);}
.badge{
  display:inline-block;padding:4px 11px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:700;background:var(--primary-light);color:var(--primary);
}
.badge-accent{background:var(--accent-light);color:#D9630B;}

/* ============ 时间线 ============ */
.timeline{position:relative;max-width:920px;margin:0 auto;}
.timeline::before{
  content:"";position:absolute;left:23px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--primary),#C9D7FB);
}
.tl-item{position:relative;padding-left:72px;margin-bottom:26px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:0;top:6px;width:48px;height:48px;border-radius:14px;
  background:#fff;border:2px solid var(--primary);color:var(--primary);
  font-weight:800;font-size:17px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px -10px rgba(31,73,200,.5);z-index:2;
}
.tl-item .tl-card{
  background:#fff;border-radius:var(--radius-card);padding:26px 28px;
  box-shadow:var(--shadow-1);border:1px solid rgba(226,232,243,.8);
  transition:box-shadow .22s ease,transform .22s ease;
}
.tl-item .tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.tl-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px;}
.tl-head h3{margin:0;}
.tl-desc{font-size:15px;margin-bottom:16px;}
.tl-points{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.tl-point{
  background:#F7F9FE;border-radius:12px;padding:14px 16px;border-left:3px solid var(--primary);
}
.tl-point strong{display:block;font-size:14px;color:var(--ink);margin-bottom:4px;}
.tl-point span{font-size:13.5px;color:#6C7A94;line-height:1.65;display:block;}
.tl-note{
  margin-top:16px;display:flex;gap:10px;align-items:flex-start;
  background:var(--accent-light);border-radius:12px;padding:13px 16px;
}
.tl-note i{color:var(--accent);margin-top:4px;}
.tl-note span{font-size:13.5px;color:#8A4A10;line-height:1.7;}

/* ============ 路径对比 ============ */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{
  background:#fff;border-radius:var(--radius-card);padding:28px;
  box-shadow:var(--shadow-1);border:1px solid rgba(226,232,243,.8);
  display:flex;flex-direction:column;
}
.compare-card.is-dark{
  background:linear-gradient(160deg,var(--primary-dark),#17358C);color:rgba(255,255,255,.86);
  border-color:transparent;
}
.compare-card.is-dark h3,.compare-card.is-dark strong{color:#fff;}
.compare-card.is-dark .compare-list li{border-color:rgba(255,255,255,.18);color:rgba(255,255,255,.85);}
.compare-top{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.compare-top .card-icon{margin-bottom:0;}
.compare-intro{font-size:14.5px;margin-bottom:18px;}
.compare-list{margin-bottom:22px;}
.compare-list li{
  display:flex;gap:10px;align-items:flex-start;padding:11px 0;
  border-bottom:1px dashed var(--line);font-size:14.5px;line-height:1.7;
}
.compare-list li:last-child{border-bottom:0;}
.compare-list i{color:var(--success);margin-top:5px;font-size:13px;}
.compare-card.is-dark .compare-list i{color:#7FE0A8;}

/* ============ 核对要点网格 ============ */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.check-card{
  background:#fff;border-radius:var(--radius-card);padding:24px;
  border:1px solid rgba(226,232,243,.9);box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CBD9FB;}
.check-card h4{margin-bottom:8px;}
.check-card p{font-size:14px;margin-bottom:0;color:var(--text);}
.check-num{
  font-size:13px;font-weight:800;color:var(--accent);letter-spacing:1px;display:block;margin-bottom:10px;
}

/* ============ 图文分区 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.split-media{position:relative;}
.split-media img{width:100%;height:330px;border-radius:var(--radius-card);box-shadow:var(--shadow-2);}
.split-media .media-badge{
  position:absolute;right:-10px;bottom:-14px;background:#fff;border-radius:14px;
  padding:12px 18px;box-shadow:var(--shadow-2);border:1px solid var(--line);
  display:flex;align-items:center;gap:10px;font-size:13.5px;font-weight:700;color:var(--ink);
}
.split-media .media-badge i{color:var(--accent);font-size:16px;}
.split-list{margin-top:18px;}
.split-list li{display:flex;gap:11px;align-items:flex-start;padding:9px 0;font-size:15px;}
.split-list i{color:var(--primary);margin-top:6px;font-size:12px;}

/* ============ 卡点提示 ============ */
.issue-card{
  background:#fff;border-radius:var(--radius-card);padding:24px;border-left:4px solid var(--warning);
  box-shadow:var(--shadow-1);
}
.issue-card h4{display:flex;align-items:center;gap:9px;margin-bottom:8px;font-size:16px;}
.issue-card h4 i{color:var(--warning);}
.issue-card p{font-size:14px;margin:0;}

/* ============ 深色数据条 ============ */
.stat-band{background:var(--primary-dark);color:#fff;padding:52px 0;}
.stat-band .band-label{
  font-size:13.5px;font-weight:700;letter-spacing:.6px;color:rgba(255,255,255,.72);
  margin-bottom:26px;display:flex;align-items:center;gap:10px;
}
.stat-band .band-label::after{content:"";flex:1;height:1px;background:rgba(255,255,255,.16);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;}
.stat-num{font-size:42px;font-weight:800;color:var(--accent);line-height:1.1;font-family:Inter,system-ui,sans-serif;}
.stat-num.is-light{color:#fff;}
.stat-txt{font-size:14px;color:rgba(255,255,255,.82);margin-top:8px;line-height:1.7;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border-radius:var(--radius-card);border:1px solid rgba(226,232,243,.9);
  box-shadow:var(--shadow-1);margin-bottom:14px;overflow:hidden;
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:16px 24px;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--ink);transition:color .18s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-q .faq-icon{
  width:28px;height:28px;flex-shrink:0;border-radius:8px;background:var(--primary-light);
  color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item.open .faq-q .faq-icon{background:var(--accent);color:#fff;transform:rotate(135deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;background:var(--primary-light);}
.faq-a .faq-inner{padding:18px 24px 22px;font-size:15px;color:#33415C;line-height:1.85;}
.faq-a .faq-inner p:last-child{margin-bottom:0;}

/* ============ CTA 区 ============ */
.cta-band{
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-dark) 100%);
  border-radius:24px;color:#fff;padding:48px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-2);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,122,26,.18);
}
.cta-band h2{color:#fff;margin-bottom:10px;position:relative;z-index:2;}
.cta-band p{color:rgba(255,255,255,.85);margin:0;max-width:620px;position:relative;z-index:2;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2;}

/* ============ 互链卡 ============ */
.link-card{
  display:block;background:#fff;border-radius:var(--radius-card);padding:24px;
  border:1px solid rgba(226,232,243,.9);box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.link-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CBD9FB;}
.link-card i.go{color:var(--primary);font-size:16px;}
.link-card .lc-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;}
.link-card h4{margin-bottom:8px;}
.link-card p{font-size:14px;color:var(--text);margin:0;}

/* ============ 页脚 ============ */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.78);margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding:60px 0 34px;
}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px;}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);margin:0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;font-size:14px;}
.footer-col ul li a{color:rgba(255,255,255,.76);font-size:14px;transition:color .18s ease;}
.footer-col ul li a:hover{color:#fff;}
.footer-col ul li span{color:rgba(255,255,255,.7);font-size:14px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 22px -14px rgba(18,41,110,.35);
}
.mobile-tab .tab-inner{display:flex;height:58px;}
.tab-item{
  flex:1;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  color:#7A869E;font-size:11px;font-weight:600;
}
.tab-item i{font-size:19px;}
.tab-item.active{color:var(--primary);}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  h1{font-size:38px;}
  .nav-links a{padding:10px 9px;font-size:14.5px;}
  .split{gap:34px;}
}
@media (max-width:991px){
  :root{--sec-gap:64px;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  .nav-links{
    position:absolute;top:72px;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;margin:0;padding:10px 16px 18px;
    border-bottom:1px solid var(--line);box-shadow:0 18px 34px -20px rgba(18,41,110,.4);
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:14px 12px;border-radius:10px;}
  .nav-links a.active::after{display:none;}
  .nav-links a.active{background:var(--primary-light);}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .nav-cta{display:none;}
  .nav{gap:12px;justify-content:space-between;}
  .hero-cols{grid-template-columns:1fr;gap:32px;}
  .page-hero .container{padding-top:46px;padding-bottom:46px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .tl-points{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .compare-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;}
  .split-media img{height:280px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:48px 0 28px;}
  .cta-band{padding:36px 28px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (max-width:767px){
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom));}
  .mobile-tab{display:block;}
  :root{--sec-gap:52px;}
  h1{font-size:27px;}
  h2{font-size:23px;}
  h3{font-size:19px;}
  .container{padding:0 18px;}
  .card,.check-card,.compare-card,.tl-item .tl-card{padding:20px;}
  .timeline::before{left:17px;}
  .tl-item{padding-left:52px;}
  .tl-dot{width:36px;height:36px;border-radius:11px;font-size:15px;}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .stat-num{font-size:32px;}
  .faq-q{font-size:15.5px;padding:14px 18px;}
  .faq-a .faq-inner{padding:16px 18px 20px;}
  .cta-band{border-radius:18px;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .split-media .media-badge{right:8px;bottom:-12px;}
}
@media (max-width:479px){
  h1{font-size:24px;}
  .logo-text{font-size:15px;}
  .logo-text small{display:none;}
  .stat-grid{grid-template-columns:1fr;}
  .page-hero .container{padding-top:36px;padding-bottom:38px;}
}

/* roulang page: category2 */
:root{
  --brand:#1F49C8;
  --brand-deep:#12296E;
  --brand-light:#E8EEFF;
  --accent:#FF7A1A;
  --accent-light:#FFF2E6;
  --bg:#F4F6FB;
  --surface:#FFFFFF;
  --ink:#0E1729;
  --text:#46536B;
  --line:#E2E8F3;
  --ok:#12A150;
  --warn:#E8A100;
  --err:#D92D20;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-1:0 10px 30px -12px rgba(18,41,110,.16);
  --shadow-2:0 18px 40px -14px rgba(18,41,110,.24);
  --shadow-3:0 24px 60px -20px rgba(18,41,110,.28);
  --container:1200px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);object-fit:cover}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;line-height:1.32;letter-spacing:normal}
h1{font-size:44px}
h2{font-size:30px}
h3{font-size:21px;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-sm{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand);background:var(--brand-light);border-radius:999px;padding:6px 14px;margin-bottom:16px}
.section-head p{margin-top:14px;color:var(--text)}
.lead{font-size:17px;color:var(--text)}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 24px -16px rgba(18,41,110,.28)}
.nav{display:flex;align-items:center;gap:28px;height:76px}
.logo{display:flex;align-items:center;gap:12px;color:var(--ink);flex-shrink:0}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),#2E63E8);
  color:#fff;font-size:19px;box-shadow:var(--shadow-1);
}
.logo-text{display:flex;flex-direction:column;font-size:17px;font-weight:800;line-height:1.2}
.logo-text small{font-size:11px;font-weight:500;color:var(--text);letter-spacing:2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  position:relative;padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--text);
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--brand);background:var(--brand-light)}
.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;
  border-radius:3px;background:var(--brand);
}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);color:var(--brand-deep);font-size:18px;
  background:#fff;margin-left:auto;
}
.nav-toggle:hover{background:var(--brand-light)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 24px -12px rgba(255,122,26,.7)}
.btn-accent:hover{background:#ED6A0B;color:#fff;transform:translateY(-1px);box-shadow:0 16px 32px -14px rgba(255,122,26,.8)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:#1A3EAD;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-deep);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6)}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px)}
.btn-white{background:#fff;color:var(--brand-deep);box-shadow:var(--shadow-1)}
.btn-white:hover{background:#F0F4FF;color:var(--brand-deep);transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none}

/* ===== 标签 / 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;line-height:1.8;
}
.badge-brand{background:var(--brand-light);color:var(--brand)}
.badge-accent{background:var(--accent-light);color:#C4560A}
.badge-ok{background:#E6F7EE;color:var(--ok)}
.badge-warn{background:#FFF6E0;color:#A97600}

/* ===== 内页 Hero ===== */
.page-hero{
  position:relative;
  background:linear-gradient(115deg,rgba(18,41,110,.94),rgba(31,73,200,.82)),
             url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
  padding:64px 0 72px;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(255,122,26,.32),transparent 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.9)}
.breadcrumb a:hover{color:#fff}
.breadcrumb i{font-size:10px;opacity:.7}
.page-hero h1{color:#fff;max-width:820px}
.page-hero .hero-tag{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:700;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);color:#fff;
}
.page-hero .hero-intro{margin-top:20px;max-width:820px;color:rgba(255,255,255,.86);font-size:16.5px}
.page-hero .hero-intro p+p{margin-top:8px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ===== 锚点快捷条 ===== */
.anchor-bar{
  background:#fff;border-bottom:1px solid var(--line);
  position:sticky;top:76px;z-index:60;
}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 24px;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--text);font-size:14px;font-weight:600;
  transition:all .2s ease;
}
.anchor-chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-light)}
.anchor-chip i{color:var(--brand);font-size:13px}

/* ===== 主体布局 ===== */
.security-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 340px;
  gap:40px;align-items:start;
}
.content-flow{display:flex;flex-direction:column;gap:56px}

/* ===== 图文交替模块 ===== */
.feature-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:36px;align-items:center;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);
  transition:box-shadow .24s ease,transform .24s ease;
}
.feature-row:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.feature-row.reverse{direction:rtl}
.feature-row.reverse>*{direction:ltr}
.feature-figure{position:relative}
.feature-figure img{width:100%;height:280px;box-shadow:var(--shadow-1)}
.feature-figure .fig-badge{
  position:absolute;left:16px;bottom:16px;
  background:#fff;border-radius:999px;padding:6px 14px;
  font-size:12px;font-weight:700;color:var(--brand);box-shadow:var(--shadow-1);
}
.feature-body h3{margin-bottom:12px}
.feature-body p{font-size:15.5px}
.point-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.point-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text)}
.point-list li i{color:var(--brand);margin-top:6px;font-size:13px}
.point-list li strong{color:var(--ink);font-weight:700}

/* ===== 阶段条 ===== */
.stage-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.stage-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);transition:box-shadow .24s ease,transform .24s ease;
}
.stage-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.stage-num{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand);font-weight:800;font-size:16px;margin-bottom:16px;
}
.stage-card h3{font-size:18px;margin-bottom:10px}
.stage-card p{font-size:14.5px}
.stage-card .mini-note{margin-top:14px;font-size:13px;color:var(--brand);font-weight:600}

/* ===== 提示条 ===== */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:12px;padding:18px 20px;
}
.notice i{color:var(--accent);font-size:18px;margin-top:4px}
.notice strong{display:block;color:var(--ink);margin-bottom:4px;font-size:15px}
.notice p{font-size:14.5px}
.notice.is-info{border-left-color:var(--brand)}
.notice.is-info i{color:var(--brand)}
.notice.is-ok{border-left-color:var(--ok)}
.notice.is-ok i{color:var(--ok)}

/* ===== 侧边要点卡 ===== */
.side-card{
  position:sticky;top:112px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);padding:26px 24px;
}
.side-card h3{font-size:18px;margin-bottom:6px}
.side-card .side-sub{font-size:13.5px;color:var(--text);margin-bottom:18px}
.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.check-list li i{color:var(--brand);margin-top:5px;font-size:13px}
.check-list li span{color:var(--text)}
.check-list li b{color:var(--ink)}
.side-divider{height:1px;background:var(--line);margin:20px 0}
.side-meta{display:flex;flex-direction:column;gap:8px;font-size:13px;color:var(--text)}
.side-meta span{display:flex;align-items:center;gap:8px}
.side-meta i{color:var(--brand);width:14px}
.side-card .btn{width:100%;margin-top:20px}

/* ===== FAQ ===== */
.faq-wrap{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.faq-item[open]{box-shadow:var(--shadow-1);border-color:#CBD9F7}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 22px;list-style:none;cursor:pointer;
  font-size:16px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand);font-size:12px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item[open] summary .faq-icon{transform:rotate(45deg);background:var(--accent);color:#fff}
.faq-answer{background:var(--brand-light);padding:4px 22px 20px;font-size:15px;color:#33415C}
.faq-answer p+p{margin-top:10px}

/* ===== CTA 条 ===== */
.cta-band{
  background:linear-gradient(120deg,var(--brand-deep),#1B3FA8);
  border-radius:20px;color:#fff;padding:48px;position:relative;overflow:hidden;
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(255,122,26,.34),transparent 70%);
}
.cta-band>*{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:28px}
.cta-band p{color:rgba(255,255,255,.85);margin-top:12px;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ===== 互链卡 ===== */
.link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.link-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.link-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CBD9F7}
.link-card .link-ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand);font-size:18px;margin-bottom:16px;
}
.link-card h3{font-size:18px;color:var(--ink);margin-bottom:8px}
.link-card p{font-size:14.5px;color:var(--text)}
.link-card .link-more{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  font-size:14px;font-weight:700;color:var(--brand);
}
.link-card:hover .link-more i{transform:translateX(4px)}
.link-card .link-more i{transition:transform .2s ease}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-deep);color:#C9D6F5;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-brand .logo-mark{background:linear-gradient(135deg,var(--accent),#FF9A4D)}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-col p{font-size:14px;line-height:1.9;color:#AFBEE8}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{color:#C9D6F5;font-size:14px}
.footer-col ul a:hover{color:#fff}
.footer-col ul span{font-size:13.5px;color:#AFBEE8}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#9FB0DD;
}

/* ===== 移动端底部 Tab ===== */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:120;
  background:rgba(255,255,255,.97);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -8px 24px -18px rgba(18,41,110,.4);
}
.mobile-tab ul{display:flex;align-items:stretch;justify-content:space-around;height:58px}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--text);position:relative;font-weight:600;
}
.mobile-tab a i{font-size:17px}
.mobile-tab a.active{color:var(--brand)}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--brand);
}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  h1{font-size:38px}
  .security-layout{grid-template-columns:minmax(0,1fr) 300px;gap:28px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:76px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:14px 24px 20px;box-shadow:var(--shadow-2);
  }
  .nav-links.is-open{display:flex}
  .nav-links a{padding:14px 12px}
  .nav-links a.active::after{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-cta{display:none}
  .security-layout{grid-template-columns:minmax(0,1fr)}
  .side-card{position:static}
  .feature-row{grid-template-columns:minmax(0,1fr);gap:24px}
  .feature-row.reverse{direction:ltr}
  .stage-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .link-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:36px 28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .anchor-bar{top:76px}
}
@media (max-width:767px){
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom))}
  h1{font-size:28px}
  h2{font-size:23px}
  h3{font-size:18px}
  .section{padding:52px 0}
  .section-sm{padding:44px 0}
  .container{padding:0 18px}
  .nav{height:66px}
  .logo-text{font-size:15px}
  .logo-text small{display:none}
  .nav-links{top:66px}
  .page-hero{padding:40px 0 48px}
  .page-hero .hero-intro{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto}
  .anchor-bar{top:66px}
  .anchor-scroll{padding:12px 18px}
  html{scroll-padding-top:126px}
  .feature-row{padding:20px}
  .feature-figure img{height:210px}
  .stage-grid{grid-template-columns:minmax(0,1fr)}
  .link-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:30px 22px;border-radius:16px}
  .cta-actions .btn{width:100%}
  .mobile-tab{display:block}
  .content-flow{gap:40px}
  .side-card{padding:22px 18px}
  .faq-item summary{padding:14px 18px;font-size:15px}
  .faq-answer{padding:4px 18px 18px}
}
@media (max-width:479px){
  h1{font-size:25px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .logo-mark{width:38px;height:38px;font-size:17px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category3 */
:root{
  --primary:#1F49C8;
  --primary-dark:#12296E;
  --primary-light:#E8EEFF;
  --accent:#FF7A1A;
  --accent-light:#FFF2E6;
  --bg:#F4F6FB;
  --card:#FFFFFF;
  --ink:#0E1729;
  --text:#46536B;
  --line:#E2E8F3;
  --success:#12A150;
  --warn:#E8A100;
  --danger:#D92D20;
  --radius:16px;
  --radius-sm:10px;
  --radius-img:14px;
  --shadow-1:0 10px 30px -12px rgba(18,41,110,.16);
  --shadow-2:0 18px 40px -14px rgba(18,41,110,.24);
  --shadow-3:0 24px 60px -20px rgba(18,41,110,.28);
  --sec-desktop:88px;
  --sec-tablet:64px;
  --sec-mobile:52px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.35;font-weight:800}
h1{font-size:clamp(26px,3.3vw,44px)}
h2{font-size:clamp(22px,2.4vw,30px)}
h3{font-size:clamp(18px,1.8vw,21px);font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-desktop) 0}
.section-sm{padding:56px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.02em;color:var(--primary);background:var(--primary-light);padding:6px 14px;border-radius:999px;margin-bottom:16px}
.section-head h2{margin-bottom:14px}
.section-head p{font-size:16px;color:var(--text)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn i{font-size:14px}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 24px -12px rgba(255,122,26,.9)}
.btn-accent:hover{background:#F06E10;transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(255,122,26,.95)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:#1B3EAE;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--primary);border:1px solid var(--primary)}
.btn-ghost:hover{background:var(--primary-light)}
.btn-light{background:#fff;color:var(--primary-dark);border:1px solid rgba(255,255,255,.7)}
.btn-light:hover{background:#F0F4FF;transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;line-height:1.6}
.badge-primary{background:var(--primary-light);color:var(--primary)}
.badge-accent{background:var(--accent-light);color:var(--accent)}
.badge-success{background:#E6F7EE;color:var(--success)}
.badge-warn{background:#FDF4E0;color:var(--warn)}

/* 头部导航 */
.site-header{position:sticky;top:0;z-index:200;background:#fff;border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 8px 24px -18px rgba(18,41,110,.5)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px}
.logo{display:flex;align-items:center;gap:12px;min-width:0}
.logo-mark{width:38px;height:38px;flex:none;border-radius:11px;background:linear-gradient(135deg,var(--primary),#2C5BE0);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;box-shadow:0 8px 18px -10px rgba(31,73,200,.9)}
.logo-text{font-size:16px;font-weight:800;color:var(--ink);line-height:1.25;display:flex;flex-direction:column}
.logo-text small{font-size:11px;font-weight:500;color:#8592AB;letter-spacing:.04em;line-height:1.5}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{position:relative;padding:8px 14px;border-radius:999px;font-size:15px;font-weight:600;color:var(--text)}
.nav-links a:hover{color:var(--primary);background:var(--primary-light)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:-26px;height:3px;border-radius:3px;background:var(--primary)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);color:var(--ink);font-size:17px;align-items:center;justify-content:center}
.nav-toggle:hover{background:var(--bg)}

/* 移动端抽屉 */
.mobile-drawer{position:fixed;inset:74px 0 0 0;background:#fff;z-index:190;padding:20px 24px 40px;transform:translateX(100%);transition:transform .22s ease;overflow-y:auto;border-top:1px solid var(--line)}
.mobile-drawer.open{transform:translateX(0)}
.mobile-drawer a{display:flex;align-items:center;justify-content:space-between;padding:15px 4px;font-size:16px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line)}
.mobile-drawer a.active{color:var(--primary)}
.mobile-drawer a i{color:#9AA6BE;font-size:13px}

/* 面包屑 */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:16px 0;font-size:13px;color:#8592AB}
.crumb a:hover{color:var(--primary)}
.crumb span.sep{color:#C6CFE2}
.crumb strong{color:var(--ink);font-weight:700}

/* Hero */
.hero{
  position:relative;
  padding:60px 0 68px;
  background-image:linear-gradient(120deg,rgba(246,248,253,.97) 0%,rgba(232,238,255,.93) 52%,rgba(244,246,251,.88) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center}
.hero h1{margin:18px 0 20px}
.hero-lead p{font-size:16px;color:var(--text);margin-bottom:8px;max-width:640px}
.hero-lead p:last-child{margin-bottom:0}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 30px}
.tag-chip{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--ink);box-shadow:0 6px 16px -14px rgba(18,41,110,.6)}
.tag-chip i{color:var(--primary);font-size:12px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-3);padding:22px;border:1px solid rgba(226,232,243,.9)}
.hero-card h3{font-size:16px;margin-bottom:4px}
.hero-card .hint{font-size:13px;color:#8592AB;margin-bottom:16px}
.hero-card img{border-radius:var(--radius-img);height:172px;width:100%;object-fit:cover;margin-bottom:16px}
.step-mini{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-top:1px dashed var(--line)}
.step-mini:first-of-type{border-top:none}
.step-mini .num{width:28px;height:28px;flex:none;border-radius:9px;background:var(--primary-light);color:var(--primary);font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center}
.step-mini .txt{font-size:14px;color:var(--text);line-height:1.7}
.step-mini .txt strong{display:block;color:var(--ink);font-size:14px;font-weight:700}

/* 锚点条 */
.anchor-bar{padding:18px 0;background:#fff;border-bottom:1px solid var(--line)}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
.anchor-scroll::-webkit-scrollbar{height:5px}
.anchor-scroll::-webkit-scrollbar-thumb{background:#D5DEEE;border-radius:99px}
.anchor-scroll a{flex:none;padding:9px 16px;border-radius:999px;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--text);background:#fff}
.anchor-scroll a:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}

/* 步骤条 */
.step-track{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step-card{position:relative;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-1);padding:26px 22px;border:1px solid rgba(226,232,243,.8);transition:transform .2s ease,box-shadow .2s ease}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.step-card .step-num{width:42px;height:42px;border-radius:13px;background:var(--primary-light);color:var(--primary);font-size:17px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.step-card h3{font-size:17px;margin-bottom:10px}
.step-card p{font-size:14.5px;line-height:1.8}
.step-card .step-meta{display:inline-flex;align-items:center;gap:7px;margin-top:14px;font-size:12.5px;font-weight:700;color:var(--primary)}
.step-card .step-meta i{font-size:11px}

/* 浏览器适配卡 */
.browser-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.browser-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-1);padding:24px;border:1px solid rgba(226,232,243,.8);transition:transform .2s ease,box-shadow .2s ease}
.browser-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.browser-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.browser-name{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800;color:var(--ink)}
.browser-name i{width:34px;height:34px;border-radius:11px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:15px}
.browser-card ul li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.8;margin-top:8px}
.browser-card ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--primary)}

/* 图文区块 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split.reverse .split-media{order:2}
.split-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-2)}
.split-media img{width:100%;height:340px;object-fit:cover;transition:transform .4s ease}
.split-media:hover img{transform:scale(1.03)}
.split-media .float-tag{position:absolute;left:18px;bottom:18px;background:#fff;border-radius:999px;padding:8px 16px;font-size:13px;font-weight:700;color:var(--primary);box-shadow:var(--shadow-1)}
.check-list li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px}
.check-list li:last-child{border-bottom:none}
.check-list i{color:var(--success);font-size:15px;margin-top:5px}

/* 速查卡 */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quick-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-1);padding:26px;border-top:4px solid var(--primary);transition:transform .2s ease,box-shadow .2s ease}
.quick-card:nth-child(2){border-top-color:var(--accent)}
.quick-card:nth-child(3){border-top-color:var(--success)}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.quick-card h3{font-size:17px;margin-bottom:6px}
.quick-card .sub{font-size:13px;color:#8592AB;margin-bottom:16px}
.ordered li{counter-increment:qc;display:flex;gap:12px;font-size:14.5px;line-height:1.8;padding:8px 0}
.ordered li::before{content:counter(qc);width:22px;height:22px;flex:none;margin-top:6px;border-radius:7px;background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center}
.ordered{counter-reset:qc}

/* 数据条 */
.stat-band{background:var(--primary-dark);color:#fff;padding:56px 0;position:relative;overflow:hidden}
.stat-band::before,.stat-band::after{content:"";position:absolute;top:0;bottom:0;width:14%;background:linear-gradient(90deg,rgba(255,255,255,.10),transparent)}
.stat-band::before{left:0}
.stat-band::after{right:0;transform:scaleX(-1)}
.stat-title{font-size:14px;font-weight:700;color:rgba(255,255,255,.72);letter-spacing:.04em;margin-bottom:26px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:1}
.stat-item .num{font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1.15;color:var(--accent)}
.stat-item .num span{font-size:18px;margin-left:2px;color:rgba(255,255,255,.7)}
.stat-item p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.78)}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow-1);margin-bottom:14px;overflow:hidden;transition:border-color .2s ease}
.faq-item[open]{border-color:#C9D7F7}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:14px 22px;font-size:16px;font-weight:700;color:var(--ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .ic{width:26px;height:26px;flex:none;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:12px;transition:transform .2s ease}
.faq-item[open] summary .ic{transform:rotate(45deg)}
.faq-body{background:var(--primary-light);padding:16px 22px 22px;font-size:15px;color:#33415C;line-height:1.85;animation:fadeIn .22s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

/* CTA + 表单 */
.cta-band{background:linear-gradient(120deg,var(--primary-dark),#1B3EAE);color:#fff;border-radius:0;padding:0}
.cta-inner{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;padding:72px 0;align-items:start}
.cta-inner h2{color:#fff;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.82);font-size:15.5px}
.cta-points{margin-top:22px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.9);padding:7px 0}
.cta-points i{color:var(--accent);margin-top:6px;font-size:12px}
.form-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-3);padding:26px;color:var(--text)}
.form-card h3{font-size:18px;margin-bottom:6px}
.form-card .form-hint{font-size:13px;color:#8592AB;margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:700;color:var(--ink);margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;height:46px;padding:0 14px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#FBFCFE;font-size:14.5px;transition:border-color .18s ease,box-shadow .18s ease;outline:none}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,73,200,.14);background:#fff}
.field.error input,.field.error textarea{border-color:var(--danger)}
.field .err-text{display:none;font-size:12px;color:var(--danger);margin-top:6px}
.field.error .err-text{display:block}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:#8592AB;margin:14px 0 18px}
.check-line input{width:16px;height:16px;margin-top:5px;accent-color:var(--primary)}

/* 互链卡 */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.link-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease}
.link-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.link-card img{width:100%;height:170px;object-fit:cover}
.link-card .body{padding:22px;display:flex;flex-direction:column;flex:1}
.link-card h3{font-size:17px;margin-bottom:8px}
.link-card:hover h3{color:var(--primary)}
.link-card p{font-size:14.5px;flex:1}
.link-card .more{margin-top:16px;font-size:14px;font-weight:700;color:var(--primary);display:inline-flex;align-items:center;gap:7px}
.link-card .more i{transition:transform .2s ease}
.link-card:hover .more i{transform:translateX(4px)}

/* 页脚 */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.76);padding:66px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;font-size:16px;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68)}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:700}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.68)}
.footer-col ul li a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0 26px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55)}

/* 移动底部 Tab */
.mobile-tabs{display:none;position:fixed;left:0;right:0;bottom:0;z-index:210;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.mobile-tabs .tabs-row{display:grid;grid-template-columns:repeat(5,1fr);height:58px}
.mobile-tabs a{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:#7C8AA5;font-weight:600}
.mobile-tabs a i{font-size:18px}
.mobile-tabs a.active{color:var(--primary)}
.mobile-tabs a.active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--primary)}

/* 响应式 */
@media (max-width:1199px){
  .nav-links a{padding:8px 11px;font-size:14.5px}
  .nav-links a.active::after{left:11px;right:11px}
  .split{gap:36px}
}
@media (max-width:991px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .section{padding:var(--sec-tablet) 0}
  .hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .browser-grid{grid-template-columns:repeat(2,1fr)}
  .step-track{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:30px}
  .quick-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .split.reverse .split-media{order:0}
  .split-media img{height:290px}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:56px 0}
  .link-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:767px){
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom))}
  html{scroll-padding-top:80px}
  .container{padding:0 18px}
  .section{padding:var(--sec-mobile) 0}
  .section-head{margin-bottom:28px}
  .nav{height:66px}
  .logo-text{font-size:14.5px}
  .logo-text small{font-size:10.5px}
  .mobile-drawer{inset:66px 0 0 0}
  .hero{padding:34px 0 42px}
  .hero-card img{height:150px}
  .hero-actions .btn{flex:1 1 auto}
  .browser-grid{grid-template-columns:1fr}
  .step-track{grid-template-columns:1fr;gap:14px}
  .stat-grid{grid-template-columns:1fr 1fr;gap:22px}
  .split-media img{height:220px}
  .link-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-tabs{display:block}
  .cta-inner{padding:48px 0}
  .form-card{padding:20px}
}
@media (max-width:480px){
  body{font-size:15.5px}
  .hero h1{margin:14px 0 16px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .tag-chip{font-size:12.5px;padding:6px 12px}
  .btn{height:44px;padding:0 18px;font-size:14.5px}
  .stat-item .num{font-size:30px}
  .faq-item summary{font-size:15px;padding:12px 18px}
  .faq-body{padding:14px 18px 18px}
  .link-card img{height:150px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --primary:#1F49C8;
  --primary-dark:#12296E;
  --primary-light:#E8EEFF;
  --accent:#FF7A1A;
  --accent-light:#FFF2E6;
  --bg:#F4F6FB;
  --surface:#FFFFFF;
  --ink:#0E1729;
  --text:#46536B;
  --line:#E2E8F3;
  --success:#12A150;
  --warning:#E8A100;
  --error:#D92D20;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 10px 30px -12px rgba(18,41,110,.16);
  --sh-2:0 18px 40px -14px rgba(18,41,110,.24);
  --sh-3:0 24px 60px -20px rgba(18,41,110,.28);
  --section-y:88px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);object-fit:cover;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.35;font-weight:700;letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

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

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px -14px rgba(18,41,110,.28);}
.nav{display:flex;align-items:center;gap:20px;height:70px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.logo-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),#3358DC);
  color:#fff;font-size:17px;box-shadow:0 8px 18px -10px rgba(31,73,200,.8);
}
.logo-text{display:flex;flex-direction:column;font-weight:800;font-size:16px;line-height:1.2;color:var(--ink);}
.logo-text small{font-weight:400;font-size:11px;color:#8A93A8;letter-spacing:.5px;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1 1 auto;}
.nav-links a{
  position:relative;
  padding:8px 12px;border-radius:9px;
  font-size:15px;color:var(--text);white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--primary);background:var(--primary-light);}
.nav-links a.active{color:var(--primary);font-weight:700;}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:3px;border-radius:3px;background:var(--primary);
}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:var(--primary-light);color:var(--primary);font-size:17px;
  align-items:center;justify-content:center;margin-left:auto;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  border:1px solid transparent;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 12px 24px -14px rgba(255,122,26,.9);}
.btn-accent:hover{background:#EF6A0B;color:#fff;transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(255,122,26,.95);}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--primary-dark);}
.btn-light:hover{background:var(--primary-light);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.45;transform:none;box-shadow:none;cursor:not-allowed;}

/* ---------- Breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:22px 0 0;font-size:13.5px;color:#7C879C;}
.breadcrumb a{color:#7C879C;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#B9C2D4;}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;margin-top:22px;border-radius:24px;overflow:hidden;
  background:linear-gradient(120deg,rgba(18,41,110,.94) 0%,rgba(31,73,200,.9) 58%,rgba(31,73,200,.72) 100%),
             url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  color:#fff;
  box-shadow:var(--sh-3);
}
.page-hero .hero-inner{
  display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
  padding:56px 48px;
}
.page-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  font-size:13px;color:#E6EDFF;margin-bottom:18px;
}
.page-hero h1{
  font-size:42px;line-height:1.24;color:#fff;font-weight:800;letter-spacing:.5px;
}
.page-hero .hero-sub{
  margin-top:18px;font-size:16px;line-height:1.9;color:#D6E0FA;max-width:640px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-tags span{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#EAF0FF;
}
.hero-tags span i{color:#FFD5AE;font-size:12px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;height:280px;border-radius:18px;
  box-shadow:0 28px 60px -26px rgba(6,18,54,.85);
  border:1px solid rgba(255,255,255,.2);
}
.hero-media .media-badge{
  position:absolute;left:16px;bottom:-16px;
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;color:var(--ink);border-radius:12px;
  padding:10px 16px;font-size:13px;font-weight:600;
  box-shadow:var(--sh-2);
}
.hero-media .media-badge i{color:var(--accent);}

/* ---------- Intro block ---------- */
.intro-card{
  margin-top:28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 30px;box-shadow:var(--sh-1);
}
.intro-card p{font-size:16px;line-height:1.9;}
.intro-card p + p{margin-top:14px;}
.intro-card strong{color:var(--ink);}

/* ---------- Anchor bar ---------- */
.anchor-bar-wrap{margin-top:26px;}
.anchor-bar{
  display:flex;gap:10px;overflow-x:auto;padding:6px 2px 12px;
  scrollbar-width:thin;-webkit-overflow-scrolling:touch;
}
.anchor-bar::-webkit-scrollbar{height:6px;}
.anchor-bar::-webkit-scrollbar-thumb{background:#CBD6EE;border-radius:999px;}
.anchor-bar a{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;font-size:14px;font-weight:600;
  background:#fff;color:var(--text);border:1px solid var(--line);
  box-shadow:0 6px 16px -12px rgba(18,41,110,.35);
  transition:all .18s ease;
}
.anchor-bar a:hover{color:var(--primary);border-color:#C3D2F7;background:var(--primary-light);}
.anchor-bar a i{color:var(--primary);font-size:13px;}

/* ---------- Sections ---------- */
.section{padding:var(--section-y) 0 0;}
.section:last-of-type{padding-bottom:var(--section-y);}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:700;color:var(--primary);
  background:var(--primary-light);border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.section-head h2{font-size:30px;font-weight:800;}
.section-head p{margin-top:14px;font-size:15.5px;color:var(--text);}

/* ---------- QA list ---------- */
.qa-list{display:grid;gap:16px;}
.qa-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.qa-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#CFDAF5;}
.qa-q{display:flex;gap:12px;align-items:flex-start;font-size:17px;font-weight:700;color:var(--ink);line-height:1.6;}
.qa-q .mk{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:800;margin-top:2px;
}
.qa-a{margin-top:12px;padding-left:38px;font-size:15.5px;line-height:1.9;}
.qa-a .hint{
  display:inline-flex;align-items:center;gap:7px;margin-top:12px;
  font-size:13.5px;color:var(--accent);background:var(--accent-light);
  border-radius:999px;padding:5px 13px;font-weight:600;
}

/* ---------- Steps ---------- */
.steps-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:36px;align-items:start;}
.steps{position:relative;padding-left:6px;}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px 24px 76px;box-shadow:var(--sh-1);
}
.step + .step{margin-top:16px;}
.step .num{
  position:absolute;left:24px;top:24px;
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--primary);color:#fff;font-size:15px;font-weight:800;
  box-shadow:0 10px 20px -12px rgba(31,73,200,.95);
}
.step h3{font-size:18px;}
.step p{margin-top:8px;font-size:15px;}
.step .tip{margin-top:10px;font-size:13.5px;color:#7C879C;}
.device-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);position:sticky;top:96px;
}
.device-card img{width:100%;height:190px;}
.device-card h3{margin-top:18px;font-size:17px;}
.device-card ul{margin-top:12px;display:grid;gap:10px;}
.device-card li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;}
.device-card li i{color:var(--primary);margin-top:6px;font-size:12px;}

/* ---------- Status list ---------- */
.status-list{display:grid;gap:14px;}
.status-item{
  display:grid;grid-template-columns:6px 1fr;gap:18px;align-items:stretch;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .2s ease,transform .2s ease;
}
.status-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.status-item .bar{background:var(--primary);}
.status-item.is-error .bar{background:var(--error);}
.status-item.is-warn .bar{background:var(--warning);}
.status-item.is-ok .bar{background:var(--success);}
.status-body{padding:22px 24px;}
.status-body .row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.status-body h3{font-size:17px;}
.status-body .code{
  font-size:12.5px;font-weight:700;padding:3px 10px;border-radius:999px;
  background:#F1F4FA;color:#5A6A89;
}
.status-body p{margin-top:10px;font-size:15px;}

/* ---------- Accordion ---------- */
.accordion{display:grid;gap:12px;}
.acc-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.acc-item.is-open{border-color:#C3D2F7;box-shadow:var(--sh-1);}
.acc-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:0 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
  background:#fff;transition:background .18s ease,color .18s ease;
}
.acc-btn:hover{background:#FAFBFF;color:var(--primary);}
.acc-btn .icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  background:var(--primary-light);color:var(--primary);font-size:12px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.acc-item.is-open .acc-btn .icon{transform:rotate(180deg);background:var(--accent);color:#fff;}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.acc-panel .inner{padding:4px 22px 20px;background:var(--primary-light);font-size:15.5px;line-height:1.9;color:#33456B;}
.acc-panel .inner p + p{margin-top:12px;}

/* ---------- CTA band ---------- */
.cta-band{
  margin-top:var(--section-y);
  background:linear-gradient(120deg,var(--primary-dark),#1B3AA0 70%);
  border-radius:24px;padding:46px 48px;color:#fff;
  display:grid;grid-template-columns:1.4fr .6fr;gap:32px;align-items:center;
  box-shadow:var(--sh-3);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,26,.35),rgba(255,122,26,0) 70%);
}
.cta-band h2{color:#fff;font-size:28px;}
.cta-band p{margin-top:14px;color:#CBD8F7;font-size:15.5px;max-width:640px;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* ---------- Cross link cards ---------- */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.link-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .2s ease,transform .2s ease;
}
.link-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.link-card img{width:100%;height:170px;border-radius:0;transition:transform .3s ease;}
.link-card:hover img{transform:scale(1.03);}
.link-card .lc-body{padding:20px 22px 24px;}
.link-card .badge{
  display:inline-block;font-size:12.5px;font-weight:700;color:var(--primary);
  background:var(--primary-light);border-radius:999px;padding:4px 12px;
}
.link-card h3{margin-top:12px;font-size:17.5px;}
.link-card p{margin-top:10px;font-size:14.5px;line-height:1.8;}
.link-card .go{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.link-card:hover .go{color:var(--accent);}

/* ---------- Footer ---------- */
.site-footer{margin-top:var(--section-y);background:var(--primary-dark);color:#C7D3F2;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;margin-bottom:16px;}
.footer-col p{font-size:14.5px;line-height:1.9;color:#A9B8E0;}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:16px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col li{font-size:14.5px;color:#A9B8E0;line-height:1.7;}
.footer-col a{color:#A9B8E0;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#93A5D4;
}

/* ---------- Mobile bottom tab ---------- */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.97);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:#8391AE;position:relative;
}
.mobile-tab a i{font-size:19px;}
.mobile-tab a.active{color:var(--primary);font-weight:700;}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .page-hero h1{font-size:36px;}
  .page-hero .hero-inner{padding:46px 38px;}
  .steps-layout{grid-template-columns:1fr;}
  .device-card{position:static;}
}
@media (max-width:991px){
  :root{--section-y:64px;}
  .nav-links{
    position:fixed;left:0;right:0;top:70px;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:6px;
    padding:22px 24px 40px;margin:0;overflow-y:auto;
    transform:translateX(100%);transition:transform .2s ease;z-index:75;
  }
  .site-header.nav-open .nav-links{transform:translateX(0);}
  .nav-links a{padding:14px 16px;font-size:16px;border-radius:12px;background:#F7F9FE;}
  .nav-links a.active{background:var(--primary-light);}
  .nav-links a.active::after{display:none;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .page-hero .hero-inner{grid-template-columns:1fr;padding:40px 30px;gap:28px;}
  .page-hero h1{font-size:32px;}
  .hero-media img{height:230px;}
  .cta-band{grid-template-columns:1fr;padding:36px 30px;}
  .cta-band .cta-actions{justify-content:flex-start;}
  .link-cards{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  :root{--section-y:52px;}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom));}
  .mobile-tab{display:flex;}
  .container{padding:0 18px;}
  .page-hero{margin-top:16px;border-radius:18px;}
  .page-hero h1{font-size:27px;}
  .page-hero .hero-sub{font-size:15px;}
  .page-hero .hero-inner{padding:32px 20px;}
  .section-head h2{font-size:23px;}
  .intro-card{padding:22px 20px;}
  .qa-item{padding:20px;}
  .qa-a{padding-left:0;}
  .qa-q{font-size:16px;}
  .step{padding:20px 20px 20px 66px;}
  .step .num{left:18px;top:20px;width:30px;height:30px;font-size:14px;}
  .link-cards{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{border-radius:18px;}
  .cta-band h2{font-size:22px;}
  .btn{width:100%;}
  .hero-actions .btn{width:auto;}
}
@media (max-width:480px){
  .page-hero h1{font-size:24px;}
  .logo-text{font-size:14.5px;}
  .logo-text small{font-size:10px;}
  .logo-mark{width:34px;height:34px;font-size:15px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .section-head h2{font-size:21px;}
  .qa-q{font-size:15.5px;}
}