/* roulang page: index */
:root{
  --brand-600:#1B5FA8;
  --brand-700:#14487F;
  --brand-900:#0E2A47;
  --brand-50:#EEF4FB;
  --accent-500:#FF7A2F;
  --accent-600:#EC6A1F;
  --accent-100:#FFE9DC;
  --teal-500:#17BFA0;
  --line:#E3EAF2;
  --bg:#F5F8FB;
  --surface:#FFFFFF;
  --text:#14212E;
  --muted:#5B6B7C;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,42,71,.06);
  --shadow-2:0 12px 32px -12px rgba(16,42,71,.20);
  --bs-primary:#1B5FA8;
  --bs-body-color:#14212E;
  --bs-border-color:#E3EAF2;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:700;color:var(--text);}
p{margin:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-700);}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;padding:0 24px;margin:0 auto;}
@media (min-width:1440px){.container{max-width:1200px;}}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section--surface{background:var(--surface);}
.section--bg{background:var(--bg);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-head h2{font-size:28px;line-height:1.35;}
.section-head .sub{color:var(--muted);font-size:15px;margin-top:10px;max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-600);
  background:var(--brand-50);border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow i{color:var(--accent-500);}

/* ---------- 按钮 ---------- */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:all .2s ease;cursor:pointer;white-space:nowrap;
}
.btn-c-primary{background:var(--brand-600);color:#fff;}
.btn-c-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}
.btn-c-primary:active{transform:translateY(1px);}
.btn-c-outline{background:#fff;color:var(--brand-700);border-color:var(--line);}
.btn-c-outline:hover{border-color:var(--brand-600);background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);}
.btn-c-outline:active{transform:translateY(1px);}
.btn-c-accent{background:var(--accent-500);color:#fff;}
.btn-c-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn-c-accent:active{transform:translateY(1px);}
.btn-c-ghost{background:transparent;color:var(--brand-600);padding:0 6px;height:auto;}
.btn-c-ghost:hover{color:var(--brand-700);}
.btn-c-ghost i{transition:transform .2s ease;}
.btn-c-ghost:hover i{transform:translateX(3px);}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,42,71,.06);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));
  color:#fff;font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px -4px rgba(27,95,168,.55);
}
.brand-text{font-size:17px;font-weight:700;color:var(--brand-900);letter-spacing:-.01em;}
.brand-sub{display:block;font-size:11px;color:var(--muted);font-weight:500;letter-spacing:.04em;margin-top:-2px;}
.nav-cards{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1;}
.nav-card{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:10px;
  font-size:13px;font-weight:600;color:#3C4A5A;
  position:relative;transition:all .2s ease;white-space:nowrap;
}
.nav-card i{font-size:15px;color:var(--brand-600);}
.nav-card:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);}
.nav-card.active{color:var(--brand-700);background:var(--brand-50);}
.nav-card.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;
  height:2px;border-radius:2px;background:var(--accent-500);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-actions .btn-c{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--brand-900);
  align-items:center;justify-content:center;font-size:18px;
}
.nav-toggle:hover{background:var(--brand-50);}

/* 移动端抽屉 */
.nav-drawer{--bs-offcanvas-width:86%;border-left:1px solid var(--line);}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;}
.nav-drawer .offcanvas-body{padding:20px;display:flex;flex-direction:column;gap:10px;}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--line);background:#fff;color:var(--muted);}
.drawer-close:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-card{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;border-radius:12px;border:1px solid var(--line);
  background:#fff;font-size:15px;font-weight:600;color:var(--text);box-shadow:var(--shadow-1);
}
.drawer-card i{width:20px;text-align:center;color:var(--brand-600);}
.drawer-card:hover{border-color:var(--brand-600);background:var(--brand-50);color:var(--brand-700);}
.drawer-card.active{border-color:var(--brand-600);background:var(--brand-50);color:var(--brand-700);}
.drawer-cta{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:grid;gap:10px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#F2F7FD 0%,var(--bg) 100%);padding:72px 0 64px;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(27,95,168,.05) 0 1px,transparent 1px 16px);
}
.hero .container{position:relative;z-index:1;}
.hero-copy h1{font-size:42px;line-height:1.24;margin-bottom:18px;}
.hero-copy h1 em{font-style:normal;color:var(--brand-600);}
.hero-lead{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 20px;margin-bottom:30px;}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:#33465B;font-weight:500;}
.hero-points i{color:var(--teal-500);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-media{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-2);aspect-ratio:4/3;background:var(--brand-900);}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,42,71,.10),rgba(14,42,71,.14));z-index:1;}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;top:18px;right:18px;z-index:2;
  background:#fff;border-radius:12px;box-shadow:var(--shadow-2);
  padding:10px;display:flex;align-items:center;gap:10px;width:216px;
}
.hero-float img{width:56px;height:46px;border-radius:8px;object-fit:cover;}
.hero-float strong{display:block;font-size:13px;color:var(--brand-900);line-height:1.4;}
.hero-float span{display:block;font-size:11px;color:var(--muted);}

/* 信任条 */
.trust-bar{margin-top:36px;}
.trust-card{
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;box-shadow:var(--shadow-1);height:96px;
  transition:all .2s ease;
}
.trust-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6E3F2;}
.trust-icon{
  width:40px;height:40px;border-radius:10px;background:var(--brand-50);
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);font-size:17px;flex-shrink:0;
}
.trust-num{font-size:19px;font-weight:700;color:var(--brand-900);font-family:Inter,Roboto,sans-serif;line-height:1.2;}
.trust-label{font-size:13px;color:var(--muted);}

/* ---------- 权益对比表 ---------- */
.compare-wrap{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;}
.compare-table{margin:0;min-width:720px;}
.compare-table th,.compare-table td{padding:18px 20px;border-color:var(--line);vertical-align:middle;}
.compare-table thead th{
  font-size:14px;font-weight:700;color:var(--brand-900);
  background:#fff;border-bottom:1px solid var(--line);white-space:nowrap;
}
.compare-table thead th span{display:block;font-size:12px;font-weight:500;color:var(--muted);margin-top:2px;}
.compare-table tbody tr{transition:background-color .2s ease;}
.compare-table tbody tr:hover{background:var(--brand-50);}
.compare-table tbody td{font-size:14px;color:#3C4A5A;}
.compare-table .col-name{font-weight:600;color:var(--text);white-space:nowrap;}
.compare-table .col-rec{background:var(--brand-50);position:relative;}
.compare-table thead th.col-rec{border-top:3px solid var(--accent-500);}
.rec-badge{
  display:inline-flex;align-items:center;gap:5px;
  background:var(--accent-100);color:var(--accent-600);
  font-size:11px;font-weight:700;border-radius:999px;padding:2px 9px;margin-left:8px;vertical-align:middle;
}
.yes{color:var(--teal-500);font-weight:700;}
.no{color:#B4C0CC;}
.scroll-hint{position:absolute;top:0;right:0;bottom:0;width:44px;background:linear-gradient(90deg,rgba(255,255,255,0),#fff 70%);pointer-events:none;display:none;}
.compare-note{font-size:13px;color:var(--muted);margin-top:14px;}

/* ---------- 等级阶梯 ---------- */
.tier-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px;height:100%;
  box-shadow:var(--shadow-1);transition:all .2s ease;
}
.tier-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D6E3F2;}
.tier-offset-1{margin-top:0;}
.tier-offset-2{margin-top:20px;}
.tier-offset-3{margin-top:8px;}
.tier-num{
  font-family:Inter,Roboto,sans-serif;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--muted);margin-bottom:14px;display:block;
}
.tier-badge{
  position:absolute;top:22px;right:24px;font-size:12px;font-weight:700;
  border-radius:999px;padding:4px 12px;background:var(--brand-50);color:var(--brand-600);
}
.tier-badge.hot{background:var(--accent-100);color:var(--accent-600);}
.tier-card h3{font-size:20px;margin-bottom:6px;}
.tier-price{font-size:14px;color:var(--muted);margin-bottom:18px;}
.tier-list li{display:flex;gap:10px;font-size:14px;color:#3C4A5A;padding:8px 0;border-bottom:1px dashed var(--line);}
.tier-list li:last-child{border-bottom:0;}
.tier-list i{color:var(--teal-500);margin-top:5px;font-size:12px;}
.tier-card .btn-c{width:100%;margin-top:20px;}
.tier-wide{display:flex;flex-wrap:wrap;gap:28px;align-items:center;padding:32px;}
.tier-wide .tier-wide-body{flex:1 1 320px;}
.tier-wide img{flex:0 0 260px;width:260px;height:170px;object-fit:cover;border-radius:12px;}

/* ---------- 专属内容预览 ---------- */
.lib-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;box-shadow:var(--shadow-1);transition:all .2s ease;
  display:flex;flex-direction:column;
}
.lib-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D6E3F2;}
.lib-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-50);}
.lib-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.lib-card:hover .lib-cover img{transform:scale(1.04);}
.lock-badge{
  position:absolute;top:12px;right:12px;z-index:2;
  display:inline-flex;align-items:center;gap:6px;
  background:var(--accent-100);color:var(--accent-600);
  font-size:12px;font-weight:700;border-radius:999px;padding:4px 11px;
}
.lib-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  font-size:12px;font-weight:600;color:var(--brand-600);
  background:var(--brand-50);border-radius:999px;padding:3px 11px;
}
.lib-body h3{font-size:17px;line-height:1.5;}
.lib-desc{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.lib-meta{margin-top:auto;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line);}

/* ---------- 最新信息（CMS） ---------- */
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;box-shadow:var(--shadow-1);transition:all .2s ease;
  display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D6E3F2;}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-50);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--brand-600);}
.news-desc{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line);}
.news-meta .more{color:var(--brand-600);font-weight:600;}
.empty-state{
  border:1px dashed #C9D8E8;border-radius:var(--radius-card);
  background:#fff;padding:56px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:#A9BED6;margin-bottom:16px;display:block;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px;}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.faq-acc .accordion-item:first-of-type{border-top:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;
  padding:22px 40px 22px 8px;font-size:16px;font-weight:600;color:var(--text);
  display:flex;align-items:flex-start;gap:16px;position:relative;
}
.faq-acc .accordion-button::after{display:none;}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand-700);background:var(--brand-50);box-shadow:none;}
.faq-acc .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;
  border-radius:3px;background:var(--accent-500);
}
.faq-num{font-family:Inter,Roboto,sans-serif;font-size:13px;font-weight:700;color:var(--muted);flex:0 0 24px;padding-top:2px;}
.faq-q{flex:1;}
.faq-acc .accordion-button .faq-icon{
  position:absolute;right:6px;top:26px;width:16px;height:16px;flex:0 0 16px;
}
.faq-acc .accordion-button .faq-icon::before,
.faq-acc .accordion-button .faq-icon::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform .2s ease,opacity .2s ease;
}
.faq-acc .accordion-button .faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-acc .accordion-button .faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-acc .accordion-button:not(.collapsed) .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-acc .accordion-body{padding:0 40px 24px 48px;font-size:15px;line-height:1.8;color:#3C4A5A;}
.faq-acc .accordion-button:focus{box-shadow:none;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;background:var(--brand-900);color:#fff;overflow:hidden;
  padding:72px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 18px);
}
.cta-band .container{position:relative;z-index:1;}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:16px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;}
.cta-list li{display:flex;gap:10px;color:rgba(255,255,255,.86);font-size:15px;padding:7px 0;}
.cta-list i{color:var(--accent-500);margin-top:5px;font-size:13px;}
.cta-form{
  background:#fff;border-radius:var(--radius-card);padding:26px;box-shadow:0 20px 40px -18px rgba(0,0,0,.45);
}
.cta-form h3{font-size:18px;margin-bottom:6px;}
.cta-form .hint{font-size:13px;color:var(--muted);margin-bottom:18px;}
.cta-form label{font-size:13px;font-weight:600;color:#3C4A5A;margin-bottom:6px;display:block;}
.field-row{display:flex;gap:10px;}
.field-row input{
  flex:1;height:46px;border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:0 14px;font-size:15px;color:var(--text);background:#fff;
}
.field-row input::placeholder{color:#9AAAB9;}
.field-row input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(27,95,168,.12);}
.code-btn{
  height:46px;padding:0 18px;border-radius:var(--radius-btn);border:1px solid var(--line);
  background:var(--brand-50);color:var(--brand-600);font-size:14px;font-weight:600;white-space:nowrap;
  transition:all .2s ease;
}
.code-btn:hover{background:#E2EDF9;color:var(--brand-700);}
.cta-form .btn-c{width:100%;height:48px;margin-top:14px;}
.cta-form .tip{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.6;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.75);padding:64px 0 0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none;}
.footer-brand span{color:#fff;font-size:16px;font-weight:700;}
.site-footer p{font-size:13px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-title{font-size:14px;color:#fff;font-weight:700;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:13px;color:rgba(255,255,255,.62);border-bottom:2px solid transparent;padding-bottom:2px;transition:all .2s ease;}
.footer-links a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.45);}
.footer-qr{
  width:96px;height:96px;border-radius:12px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.55);font-size:24px;
}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-card{padding:8px 10px;font-size:12px;}
  .hero-copy h1{font-size:36px;}
}
@media (max-width:991.98px){
  .nav-cards,.nav-actions{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .section{padding:64px 0;}
  .hero{padding:52px 0 48px;}
  .hero-copy h1{font-size:32px;}
  .hero-media{margin-top:32px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .scroll-hint{display:block;}
}
@media (max-width:767.98px){
  body{font-size:15px;line-height:1.75;}
  .section{padding:56px 0;}
  .container{padding:0 16px;}
  .nav-inner{height:60px;}
  .brand-text{font-size:15px;}
  .brand-sub{display:none;}
  .hero-copy h1{font-size:28px;line-height:1.32;}
  .hero-lead{font-size:15px;}
  .hero-actions .btn-c{width:100%;height:48px;}
  .trust-card{height:auto;}
  .section-head h2{font-size:22px;}
  .tier-offset-2,.tier-offset-3{margin-top:0;}
  .tier-wide img{flex:1 1 100%;width:100%;height:180px;}
  .cta-band{padding:56px 0;}
  .cta-band h2{font-size:22px;}
  .field-row{flex-direction:column;}
  .code-btn{width:100%;}
  .faq-acc .accordion-button{font-size:15px;padding:18px 36px 18px 6px;}
  .faq-acc .accordion-body{padding:0 20px 20px 38px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: article */
:root{
  --brand-600:#1B5FA8;
  --brand-700:#14487F;
  --brand-900:#0E2A47;
  --brand-50:#EEF4FB;
  --accent-500:#FF7A2F;
  --accent-100:#FFE9DC;
  --teal-500:#17BFA0;
  --line:#E3EAF2;
  --bg:#F5F8FB;
  --surface:#FFFFFF;
  --text:#14212E;
  --muted:#5B6B7C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(16,42,71,.06);
  --shadow-2:0 12px 32px -12px rgba(16,42,71,.20);
  --section:88px;
  --gutter:24px;
  --bs-primary:#1B5FA8;
  --bs-primary-rgb:27,95,168;
  --bs-body-color:#14212E;
  --bs-body-bg:#F5F8FB;
  --bs-border-color:#E3EAF2;
  --bs-border-radius:10px;
  --bs-link-color:#1B5FA8;
  --bs-link-hover-color:#14487F;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;}
h1,h2,h3,h4{letter-spacing:-.01em;font-weight:700;line-height:1.35;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
a:hover{color:var(--brand-700);}
img{max-width:100%;display:block;}
ul{list-style:none;padding:0;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,42,71,.05);
}
.nav-inner{
  height:72px;display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--brand-900);}
.brand:hover{color:var(--brand-900);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  background:var(--brand-600);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;
  box-shadow:var(--shadow-1);
}
.brand-text{display:block;font-size:16px;font-weight:700;line-height:1.2;}
.brand-sub{display:block;font-size:12px;color:var(--muted);line-height:1.5;}
.nav-cards{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-card{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:var(--radius-btn);
  font-size:13px;font-weight:600;color:var(--text);white-space:nowrap;
  border:1px solid transparent;position:relative;
}
.nav-card i{font-size:15px;color:var(--brand-600);}
.nav-card:hover{background:var(--brand-50);transform:translateY(-1px);color:var(--brand-700);}
.nav-card.active{color:var(--brand-700);}
.nav-card.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  background:var(--accent-500);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:all .2s ease;
}
.btn-c-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1);}
.btn-c-primary:hover{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-2);transform:translateY(-1px);}
.btn-c-primary:active{transform:translateY(1px);box-shadow:var(--shadow-1);}
.btn-c-outline{background:transparent;color:var(--brand-700);border-color:var(--line);}
.btn-c-outline:hover{border-color:var(--brand-600);background:var(--brand-50);color:var(--brand-700);}
.btn-c-outline:active{transform:translateY(1px);}
.btn-c-accent{background:var(--accent-500);color:#fff;}
.btn-c-accent:hover{background:#eb6a1e;color:#fff;}
.btn-c-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-c-block{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:var(--surface);color:var(--brand-900);
  align-items:center;justify-content:center;font-size:18px;
}
.nav-toggle:hover{background:var(--brand-50);}

/* ---------- Drawer ---------- */
.offcanvas.rt-drawer{width:86%;max-width:360px;border:none;border-radius:16px 0 0 16px;padding:0;}
.rt-drawer .offcanvas-header{padding:18px 20px;border-bottom:1px solid var(--line);}
.rt-drawer .offcanvas-body{padding:16px 20px 24px;display:flex;flex-direction:column;}
.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--brand-900);}
.drawer-links{display:flex;flex-direction:column;gap:8px;margin-top:6px;}
.drawer-links a{
  display:flex;align-items:center;gap:10px;
  padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;color:var(--text);background:var(--surface);
}
.drawer-links a i{color:var(--brand-600);}
.drawer-links a:hover{background:var(--brand-50);border-color:var(--brand-600);transform:translateY(-1px);}
.drawer-links a.active{border-color:var(--accent-500);color:var(--brand-700);}
.drawer-cta{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:10px;}

/* ---------- Breadcrumb ---------- */
.crumb-bar{background:var(--surface);border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-600);}
.crumb i{font-size:10px;color:#a9b7c6;}
.crumb .current{color:var(--text);font-weight:600;}

/* ---------- Article head ---------- */
.article-head{background:var(--surface);padding:44px 0 36px;border-bottom:1px solid var(--line);}
.article-head .cat-pill{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-50);color:var(--brand-700);
  border-radius:var(--radius-pill);padding:5px 14px;font-size:13px;font-weight:600;
}
.article-head h1{font-size:40px;line-height:1.3;margin:16px 0 0;color:var(--brand-900);}
.article-head .lead{margin-top:14px;font-size:16px;color:var(--muted);max-width:820px;}
.meta-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:22px;font-size:13px;color:var(--muted);}
.meta-bar span{display:inline-flex;align-items:center;gap:7px;}
.meta-bar i{color:var(--brand-600);}
.author-chip{display:inline-flex;align-items:center;gap:8px;}
.author-avatar{
  width:30px;height:30px;border-radius:50%;background:var(--brand-50);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.head-cover{
  margin-top:28px;border-radius:16px;overflow:hidden;position:relative;
  box-shadow:var(--shadow-1);
}
.head-cover img{width:100%;height:340px;object-fit:cover;}
.head-cover::after{
  content:"";position:absolute;inset:0;background:rgba(14,42,71,.12);
}
.head-cover .cover-tag{
  position:absolute;left:20px;bottom:20px;z-index:2;
  background:var(--surface);border-radius:12px;padding:10px 16px;box-shadow:var(--shadow-2);
  font-size:13px;font-weight:600;color:var(--brand-900);display:flex;align-items:center;gap:8px;
}
.head-cover .cover-tag i{color:var(--accent-500);}

/* ---------- Layout ---------- */
.article-wrap{padding:56px 0 var(--section);}
.article-grid{display:grid;grid-template-columns:minmax(0,760px) 320px;gap:48px;align-items:start;}
@media (max-width:991px){
  .article-grid{grid-template-columns:1fr;gap:32px;}
}

/* ---------- Article body ---------- */
.article-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:40px;box-shadow:var(--shadow-1);
}
.article-body p{font-size:18px;line-height:1.9;color:#22303f;margin:0 0 20px;}
.article-body h2{
  font-size:26px;margin:38px 0 16px;padding-left:14px;position:relative;color:var(--brand-900);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  background:var(--brand-600);border-radius:3px;
}
.article-body h3{font-size:19px;margin:28px 0 12px;color:var(--text);}
.article-body h4{font-size:17px;margin:22px 0 10px;color:var(--text);}
.article-body ul{margin:0 0 22px;padding-left:4px;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px;font-size:17px;line-height:1.85;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--teal-500);
}
.article-body ol{margin:0 0 22px;padding-left:22px;}
.article-body ol li{margin-bottom:10px;font-size:17px;line-height:1.85;}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--brand-50);
  border-left:4px solid var(--accent-500);border-radius:0 12px 12px 0;color:#25405c;
}
.article-body blockquote p{margin:0;font-size:17px;}
.article-body img{border-radius:12px;margin:24px auto;width:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;}
.article-body table th{background:var(--brand-50);color:var(--brand-900);font-weight:600;}
.article-body table th,.article-body table td{
  border:1px solid var(--line);padding:12px 14px;text-align:left;
}
.article-body table tbody tr:nth-child(even){background:#fafcfe;}
.article-body .table-responsive{border-radius:12px;overflow:hidden;margin:24px 0;}
.article-body .alert-info-c{
  background:var(--brand-50);border:1px solid #d8e6f6;border-radius:12px;
  padding:16px 20px;margin:22px 0;font-size:16px;color:#20405f;
}
.article-body .alert-warn-c{
  background:var(--accent-100);border:1px solid #ffd7bd;border-radius:12px;
  padding:16px 20px;margin:22px 0;font-size:16px;color:#8a4318;
}
.article-body a{text-decoration:underline;text-decoration-color:#bcd3ea;text-underline-offset:3px;}
.article-body a:hover{text-decoration-color:var(--brand-600);}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

/* ---------- Empty state ---------- */
.empty-state{
  background:var(--surface);border:1px dashed #cbd9e8;border-radius:var(--radius-card);
  padding:56px 28px;text-align:center;box-shadow:var(--shadow-1);
}
.empty-state i{font-size:34px;color:var(--brand-600);}
.empty-state h2{font-size:20px;margin:16px 0 8px;color:var(--brand-900);}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px;}

/* ---------- Article footer blocks ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:32px;padding-top:26px;border-top:1px solid var(--line);}
.tag-row .tag-label{font-size:13px;color:var(--muted);}
.tag{
  display:inline-flex;align-items:center;padding:5px 14px;border-radius:var(--radius-pill);
  background:var(--brand-50);color:var(--brand-700);font-size:13px;font-weight:600;
  border:1px solid #dbe8f7;
}
.tag:hover{background:var(--brand-600);color:#fff;border-color:var(--brand-600);}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;}
.share-row .share-label{font-size:13px;color:var(--muted);}
.share-btn{
  display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 16px;
  border-radius:var(--radius-btn);border:1px solid var(--line);background:var(--surface);
  font-size:13px;font-weight:600;color:var(--text);cursor:pointer;
}
.share-btn:hover{border-color:var(--brand-600);background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:34px;}
.post-nav-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-1);display:block;
}
.post-nav-card:hover{border-color:var(--brand-50);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.post-nav-card .pn-label{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px;}
.post-nav-card .pn-title{font-size:15px;font-weight:600;color:var(--text);margin-top:8px;line-height:1.6;}

/* ---------- Section titles ---------- */
.sec-block{margin-top:64px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.sec-head h2{font-size:24px;color:var(--brand-900);}
.sec-head .more{font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}
.sec-head .more:hover{color:var(--brand-700);gap:10px;}

/* ---------- Related cards ---------- */
.card-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
}
.rel-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--brand-50);}
.rel-card img{width:100%;height:160px;object-fit:cover;}
.rel-card .rel-body{padding:18px 20px 20px;}
.rel-card .badge-c{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-50);color:var(--brand-700);
  border-radius:var(--radius-pill);padding:4px 12px;font-size:12px;font-weight:600;
}
.rel-card h3{font-size:16px;margin:12px 0 8px;line-height:1.6;color:var(--text);}
.rel-card p{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-card .rel-meta{font-size:12px;color:var(--muted);margin-top:14px;display:flex;align-items:center;gap:8px;}
.back-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}

/* ---------- Sidebar ---------- */
.side-col{display:flex;flex-direction:column;gap:22px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-sticky{position:sticky;top:96px;}
.side-card h3{font-size:16px;color:var(--brand-900);display:flex;align-items:center;gap:9px;margin-bottom:14px;}
.side-card h3 i{color:var(--brand-600);font-size:15px;}
.toc-list li{margin-bottom:6px;}
.toc-list a{
  display:flex;align-items:flex-start;gap:9px;padding:8px 10px;border-radius:8px;
  font-size:14px;color:#33465a;line-height:1.6;
}
.toc-list a:hover{background:var(--brand-50);color:var(--brand-700);}
.toc-list .idx{font-size:12px;color:var(--muted);font-weight:600;flex:0 0 auto;}
.side-cta{background:var(--brand-900);border-color:var(--brand-900);color:#dce8f5;}
.side-cta h3{color:#fff;}
.side-cta h3 i{color:var(--accent-500);}
.side-cta p{font-size:14px;line-height:1.75;color:#b9cde2;margin-bottom:14px;}
.side-cta ul{margin:0 0 18px;}
.side-cta ul li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:#cfe0f0;margin-bottom:8px;}
.side-cta ul li i{color:var(--teal-500);margin-top:5px;font-size:12px;}
.tier-mini{display:flex;align-items:center;justify-content:space-between;font-size:13px;padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.18);color:#d7e5f3;}
.tier-mini:last-of-type{border-bottom:none;}
.tier-mini strong{color:var(--accent-500);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{border:none;border-bottom:1px solid var(--line);background:transparent;}
.accordion-button{
  background:transparent;border:none;box-shadow:none;padding:22px 44px 22px 44px;
  font-size:17px;font-weight:600;color:var(--text);position:relative;
}
.accordion-button:not(.collapsed){color:var(--brand-700);background:transparent;box-shadow:none;}
.accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:8px;top:20px;bottom:20px;width:3px;
  background:var(--accent-500);border-radius:3px;
}
.accordion-button::after{display:none;}
.accordion-button .faq-idx{
  position:absolute;left:12px;top:22px;font-size:13px;color:var(--muted);font-weight:600;
}
.accordion-button .faq-icon{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;background:var(--brand-50);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:12px;
}
.accordion-button:not(.collapsed) .faq-icon{background:var(--brand-600);color:#fff;}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--accent-500);outline-offset:2px;}
.accordion-body{padding:0 44px 24px 44px;font-size:15px;line-height:1.8;color:var(--muted);}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--brand-900);color:#fff;position:relative;overflow:hidden;
  padding:64px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.045) 0 1px,transparent 1px 12px);
  pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;}
.cta-inner h2{font-size:28px;color:#fff;}
.cta-inner .cta-sub{margin-top:14px;font-size:16px;color:#bcd0e5;}
.cta-points{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.cta-points span{display:inline-flex;align-items:center;gap:10px;font-size:14.5px;color:#d6e4f2;}
.cta-points i{color:var(--teal-500);}
.cta-form{
  background:var(--surface);border-radius:16px;padding:26px;box-shadow:var(--shadow-2);color:var(--text);
}
.cta-form h3{font-size:18px;color:var(--brand-900);margin-bottom:6px;}
.cta-form p{font-size:13px;color:var(--muted);margin-bottom:16px;}
.form-row{display:flex;gap:10px;margin-bottom:12px;}
.form-row input{
  flex:1;height:44px;border:1px solid var(--line);border-radius:var(--radius-input);
  padding:0 14px;font-size:14px;background:var(--surface);
}
.form-row input:focus{border-color:var(--brand-600);outline:2px solid rgba(255,122,47,.35);outline-offset:0;}
.form-row .code-btn{
  flex:0 0 auto;height:44px;padding:0 16px;border-radius:var(--radius-input);
  border:1px solid var(--brand-600);background:var(--surface);color:var(--brand-700);
  font-size:13px;font-weight:600;cursor:pointer;
}
.form-row .code-btn:hover{background:var(--brand-50);}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--brand-900);color:#c7d7e8;padding:64px 0 0;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:14px;}
.footer-brand .brand-mark{background:var(--brand-600);}
.site-footer p{font-size:13.5px;line-height:1.8;color:#a9c0d6;}
.footer-title{font-size:14px;color:#fff;font-weight:700;margin-bottom:14px;}
.footer-links li{margin-bottom:9px;}
.footer-links a{
  font-size:13px;color:rgba(255,255,255,.68);
  display:inline-block;border-bottom:2px solid transparent;padding-bottom:2px;
}
.footer-links a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.55);transform:translateY(2px);}
.footer-qr{
  width:64px;height:64px;border-radius:12px;background:rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:24px;flex:0 0 auto;
}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.15);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.6);
}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .article-body{padding:34px;}
}
@media (max-width:991.98px){
  .nav-cards,.nav-actions{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .brand-sub{display:none;}
  .article-head h1{font-size:30px;}
  .article-head{padding:32px 0 28px;}
  .head-cover img{height:240px;}
  .card-grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  :root{--section:56px;}
}
@media (max-width:767.98px){
  body{font-size:15px;line-height:1.75;}
  .article-body{padding:24px 20px;}
  .article-body p{font-size:16px;line-height:1.8;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:17px;}
  .article-body ul li,.article-body ol li{font-size:16px;}
  .card-grid-3{grid-template-columns:1fr;}
  .post-nav{grid-template-columns:1fr;}
  .btn-c{width:100%;height:48px;}
  .nav-actions .btn-c{width:auto;}
  .drawer-cta .btn-c{width:100%;}
  .sec-head{flex-direction:column;align-items:flex-start;}
  .accordion-button{font-size:15.5px;padding:18px 40px;}
  .accordion-button .faq-idx{top:18px;}
  .accordion-body{padding:0 20px 20px 40px;}
  .cta-band{padding:48px 0;}
  .cta-inner h2{font-size:22px;}
  .article-head h1{font-size:26px;}
  .form-row{flex-direction:column;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .nav-inner{height:60px;}
  .brand-text{font-size:14.5px;}
  .head-cover img{height:190px;}
  .article-body{padding:20px 16px;}
}

/* roulang page: category1 */
:root{
  --brand-50:#EEF4FB;
  --brand-100:#DCE8F6;
  --brand-600:#1B5FA8;
  --brand-700:#14487F;
  --brand-900:#0E2A47;
  --accent-500:#FF7A2F;
  --accent-100:#FFE9DC;
  --teal-500:#17BFA0;
  --line:#E3EAF2;
  --bg:#F5F8FB;
  --surface:#FFFFFF;
  --text:#14212E;
  --muted:#5B6B7C;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sd-1:0 1px 2px rgba(16,42,71,.06);
  --sd-2:0 12px 32px -12px rgba(16,42,71,.20);
  --sec-y:88px;

  --bs-primary:#1B5FA8;
  --bs-body-color:#14212E;
  --bs-body-bg:#F5F8FB;
  --bs-border-color:#E3EAF2;
  --bs-border-radius:10px;
  --bs-link-color:#1B5FA8;
  --bs-link-hover-color:#14487F;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-700)}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px}
h1,h2,h3,h4{letter-spacing:-.01em;margin:0;font-weight:700;color:var(--text)}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
@media (min-width:1440px){.container{max-width:1200px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,42,71,.05);
}
.nav-inner{display:flex;align-items:center;gap:16px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-900));
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;
}
.brand-text{display:block;font-size:15px;font-weight:700;color:var(--brand-900);line-height:1.3}
.brand-sub{display:block;font-size:11px;color:var(--muted);line-height:1.4;letter-spacing:0}
.nav-cards{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-card{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  padding:8px 12px;border-radius:10px;font-size:13px;color:#33445a;
  transition:background .2s ease,color .2s ease,transform .2s ease;
  white-space:nowrap;
}
.nav-card i{font-size:15px;color:var(--brand-600)}
.nav-card:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px)}
.nav-card.active{background:var(--brand-50);color:var(--brand-700);font-weight:600}
.nav-card.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent-500);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-actions .btn-c{height:38px;padding:0 16px;font-size:13px}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:11px;
  border:1px solid var(--line);background:#fff;color:var(--brand-900);
  align-items:center;justify-content:center;font-size:16px;cursor:pointer;
  transition:.2s ease;
}
.nav-toggle:hover{background:var(--brand-50);border-color:var(--brand-100)}

/* ---------- buttons ---------- */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  text-decoration:none;white-space:nowrap;
}
.btn-c-primary{background:var(--brand-600);color:#fff}
.btn-c-primary:hover{background:var(--brand-700);color:#fff;box-shadow:var(--sd-2)}
.btn-c-primary:active{transform:translateY(1px);box-shadow:var(--sd-1)}
.btn-c-outline{background:#fff;border-color:var(--line);color:var(--brand-700)}
.btn-c-outline:hover{border-color:var(--brand-600);background:var(--brand-50);color:var(--brand-700)}
.btn-c-accent{background:var(--accent-500);color:#fff}
.btn-c-accent:hover{background:#EA6A20;color:#fff;box-shadow:var(--sd-2)}
.btn-c-accent:active{transform:translateY(1px)}
.btn-c-ghost{background:transparent;color:var(--brand-600);padding:0 8px;height:auto}
.btn-c-ghost:hover{color:var(--brand-700)}
.btn-c-sm{height:38px;padding:0 16px;font-size:13px}

/* ---------- drawer ---------- */
.offcanvas.drawer{
  width:86%;max-width:380px;background:#fff;border-left:1px solid var(--line);
  border-radius:0;padding:0;
}
.drawer-head{display:flex;align-items:center;gap:10px;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-body{padding:16px 20px 24px}
.drawer-label{font-size:12px;letter-spacing:.08em;color:var(--muted);margin:8px 4px 10px;text-transform:uppercase}
.drawer-card{
  display:flex;align-items:center;gap:12px;padding:14px 16px;margin-bottom:10px;
  border:1px solid var(--line);border-radius:12px;font-size:14px;color:#33445a;
  transition:.2s ease;
}
.drawer-card i{width:20px;text-align:center;color:var(--brand-600);font-size:16px}
.drawer-card:hover{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700);transform:translateY(-1px)}
.drawer-card.active{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700);font-weight:600}
.drawer-foot{margin-top:18px;display:grid;gap:10px}

/* ---------- hero ---------- */
.hero-sm{
  position:relative;overflow:hidden;padding:56px 0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center 32%;
  border-bottom:1px solid var(--line);
}
.hero-sm::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(14,42,71,.90) 0%,rgba(14,42,71,.74) 48%,rgba(14,42,71,.44) 100%);
}
.hero-sm::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.055) 0 1px,transparent 1px 18px);
  pointer-events:none;
}
.hero-sm .container{position:relative;z-index:2;max-width:1000px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:16px}
.crumb a{color:rgba(255,255,255,.82)}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb .sep{opacity:.5}
.crumb .cur{color:#fff;font-weight:600}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:var(--r-pill);background:rgba(255,122,47,.16);border:1px solid rgba(255,122,47,.42);
  color:#FFC79E;font-size:12.5px;font-weight:600;margin-bottom:18px;
}
.hero-sm h1{
  color:#fff;font-size:40px;line-height:1.24;font-weight:700;margin-bottom:16px;
  max-width:20em;
}
.hero-sm h1 .hl{color:#FFC79E}
.hero-lead{color:rgba(255,255,255,.84);font-size:16.5px;line-height:1.85;max-width:44em;margin-bottom:24px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px}
.hero-btns .btn-c-outline{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.hero-btns .btn-c-outline:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16)}
.hero-fact{display:flex;align-items:center;gap:9px;color:rgba(255,255,255,.86);font-size:13.5px}
.hero-fact i{color:var(--teal-500)}

/* ---------- sections ---------- */
.section{padding:var(--sec-y) 0}
.section.alt{background:var(--bg)}
.section-head{max-width:760px;margin-bottom:40px}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  color:var(--brand-600);letter-spacing:.04em;margin-bottom:12px;
}
.sec-kicker::before{content:"";width:22px;height:2px;background:var(--accent-500);border-radius:2px}
.sec-title{font-size:28px;line-height:1.42;margin-bottom:14px}
.sec-sub{color:var(--muted);font-size:15.5px;margin:0}
.section.alt .sec-sub{color:var(--muted)}

/* ---------- intro ---------- */
.intro-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:48px;align-items:center}
.intro-copy p{font-size:16px;line-height:1.9;color:#2A3A4C}
.intro-copy p + p{margin-top:18px}
.intro-figure{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--sd-2)}
.intro-figure img{width:100%;height:340px;object-fit:cover}
.intro-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,42,71,.06) 0%,rgba(14,42,71,.34) 100%);
}
.intro-note{
  position:absolute;left:16px;right:16px;bottom:16px;z-index:2;
  background:#fff;border-radius:12px;padding:14px 16px;box-shadow:var(--sd-1);
  display:flex;align-items:center;gap:12px;
}
.intro-note i{width:34px;height:34px;border-radius:10px;background:var(--brand-50);color:var(--brand-600);display:grid;place-items:center;flex:0 0 auto}
.intro-note strong{display:block;font-size:14px;color:var(--brand-900)}
.intro-note span{display:block;font-size:12.5px;color:var(--muted);line-height:1.6}

.entry-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
.entry-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sd-1);transition:.2s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sd-2);border-color:var(--brand-50)}
.entry-card i{font-size:18px;color:var(--brand-600);display:block;margin-bottom:12px}
.entry-card h3{font-size:17px;margin-bottom:8px}
.entry-card p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- timeline ---------- */
.tl-wrap{max-width:900px}
.timeline{list-style:none;margin:0;padding:0}
.tl-item{position:relative;display:flex;gap:20px;padding-bottom:24px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:21px;top:48px;bottom:-2px;width:2px;
  background:linear-gradient(180deg,var(--brand-100),var(--line));
}
.tl-item:last-child::before{display:none}
.tl-dot{
  position:relative;z-index:2;flex:0 0 44px;width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sd-1);
  display:grid;place-items:center;font-size:14px;font-weight:700;color:var(--brand-600);
}
.tl-item:hover .tl-dot{border-color:var(--brand-600);color:var(--brand-700)}
.tl-body{
  flex:1;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sd-1);transition:.2s ease;
}
.tl-body:hover{border-color:var(--brand-50);box-shadow:var(--sd-2);transform:translateY(-2px)}
.tl-body h3{font-size:17.5px;margin-bottom:8px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tl-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--brand-50);color:var(--brand-600);font-size:12px;font-weight:600;
}
.tl-body p{font-size:14.5px;color:var(--muted);line-height:1.85}
.tl-list{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:8px}
.tl-list li{position:relative;padding-left:20px;font-size:14px;color:#33445a}
.tl-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--teal-500);
}

/* ---------- mistake compare ---------- */
.mis-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.mis-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 26px 22px;box-shadow:var(--sd-1);position:relative;overflow:hidden;
}
.mis-card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px}
.mis-card.bad::before{background:#E4572E}
.mis-card.good::before{background:var(--teal-500)}
.mis-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.mis-head i{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-size:16px;flex:0 0 auto;
}
.mis-card.bad .mis-head i{background:var(--accent-100);color:#D2541F}
.mis-card.good .mis-head i{background:#E3F7F2;color:#0E8F79}
.mis-head h3{font-size:18px}
.mis-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.mis-list li{position:relative;padding-left:24px;font-size:14.5px;color:#33445a;line-height:1.8}
.mis-list li::before{
  font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:2px;font-size:13px;
}
.mis-card.bad .mis-list li::before{content:"\f00d";color:#D2541F}
.mis-card.good .mis-list li::before{content:"\f00c";color:var(--teal-500)}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px}
.faq-accordion .accordion-item{
  border:0;border-bottom:1px solid var(--line);background:transparent;border-radius:0;
}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--line)}
.faq-accordion .accordion-button{
  position:relative;background:transparent;box-shadow:none;border:0;border-radius:0;
  padding:22px 8px 22px 46px;font-size:16.5px;font-weight:600;color:var(--brand-900);
  display:flex;align-items:center;gap:12px;line-height:1.6;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-700);background:var(--brand-50)}
.faq-accordion .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;background:var(--accent-500);
}
.faq-accordion .accordion-button::after{
  content:"+";background-image:none;transform:none;
  width:26px;height:26px;margin-left:auto;flex:0 0 auto;
  display:grid;place-items:center;border-radius:50%;
  background:var(--brand-50);color:var(--brand-600);
  font-size:17px;font-weight:500;line-height:1;transition:.2s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"−";background:var(--accent-100);color:var(--accent-500);transform:none;
}
.faq-accordion .accordion-button:focus{box-shadow:none}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--accent-500);outline-offset:-2px}
.faq-no{
  position:absolute;left:8px;top:23px;width:26px;font-size:13px;font-weight:700;color:var(--muted);letter-spacing:0;
}
.faq-accordion .accordion-body{
  padding:0 8px 24px 46px;font-size:15px;line-height:1.85;color:var(--muted);background:var(--brand-50);
}
.faq-accordion .accordion-body strong{color:var(--brand-900)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--brand-900);color:#fff;padding:72px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.55;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 18px);
}
.cta-band .container{position:relative;z-index:2}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.cta-band h2{color:#fff;font-size:28px;line-height:1.42;margin-bottom:14px}
.cta-copy{color:rgba(255,255,255,.76);font-size:15.5px;margin-bottom:20px}
.cta-points{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.88)}
.cta-points i{color:var(--teal-500);margin-top:6px}
.cta-form{
  background:#fff;border-radius:16px;padding:26px;box-shadow:var(--sd-2);color:var(--text);
}
.cta-form h3{font-size:18px;margin-bottom:6px}
.cta-form .form-tip{font-size:13px;color:var(--muted);margin-bottom:18px}
.form-c{
  width:100%;height:46px;border:1px solid var(--line);border-radius:10px;
  padding:0 14px;font-size:14px;color:var(--text);background:#fff;transition:.2s ease;
}
.form-c::placeholder{color:#9AA9B8}
.form-c:hover{border-color:var(--brand-100)}
.form-c:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(27,95,168,.12)}
.form-row{display:flex;gap:10px;margin-bottom:12px}
.form-row .form-c{flex:1}
.form-actions{display:grid;gap:10px;margin-top:6px}
.form-actions .btn-c{width:100%}
.form-note{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#fff;padding:64px 0 0;position:relative;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;inset:0;opacity:.4;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.04) 0 1px,transparent 1px 20px);
}
.site-footer .container{position:relative;z-index:2}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:15.5px;font-weight:700;color:#fff;margin-bottom:14px}
.site-footer p{color:rgba(255,255,255,.68);font-size:13.5px;line-height:1.85}
.footer-title{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:11px}
.footer-links a{
  display:inline-block;color:rgba(255,255,255,.68);font-size:13px;
  border-bottom:2px solid transparent;padding-bottom:1px;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.85);transform:translateY(1px)}
.footer-qr{
  width:96px;height:96px;flex:0 0 auto;border-radius:12px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  display:grid;place-items:center;font-size:34px;color:rgba(255,255,255,.72);
}
.footer-bottom{
  margin-top:44px;padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.58);
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .hero-sm h1{font-size:36px}
  .nav-card{padding:8px 10px;font-size:12.5px}
}
@media (max-width:991.98px){
  .nav-cards,.nav-actions{display:none}
  .nav-toggle{display:inline-flex}
  :root{--sec-y:72px}
  .intro-grid{grid-template-columns:1fr;gap:32px}
  .entry-cards{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .hero-sm{padding:44px 0}
  .hero-sm h1{font-size:32px}
}
@media (max-width:767.98px){
  :root{--sec-y:56px}
  body{font-size:15px;line-height:1.75}
  .container{padding-left:16px;padding-right:16px}
  .nav-inner{height:60px}
  .brand-text{font-size:14px}
  .brand-sub{display:none}
  .hero-sm h1{font-size:28px;line-height:1.32}
  .hero-lead{font-size:15px}
  .sec-title{font-size:22px}
  .intro-figure img{height:230px}
  .entry-cards{grid-template-columns:1fr;gap:14px}
  .mis-grid{grid-template-columns:1fr;gap:16px}
  .tl-item{gap:14px}
  .tl-dot{flex:0 0 36px;width:36px;height:36px;font-size:13px}
  .tl-item::before{left:17px;top:40px}
  .tl-body{padding:18px}
  .faq-accordion .accordion-button{font-size:15.5px;padding:18px 6px 18px 42px}
  .faq-no{left:6px;top:19px;width:24px}
  .faq-accordion .accordion-body{padding:0 6px 20px 42px}
  .card-c{padding:18px}
  .footer-bottom{flex-direction:column}
  .hero-btns .btn-c{width:100%}
}
@media (max-width:575.98px){
  .hero-facts{gap:10px 18px}
  .hero-btns{flex-direction:column;align-items:stretch}
  .tl-body h3{font-size:16.5px}
  .form-row{flex-direction:column}
  .form-row .btn-c{width:100%}
}

/* roulang page: category2 */
:root{
  --brand-600:#1B5FA8;
  --brand-700:#14487F;
  --brand-900:#0E2A47;
  --brand-50:#EEF4FB;
  --accent-500:#FF7A2F;
  --accent-100:#FFE9DC;
  --teal-500:#17BFA0;
  --line:#E3EAF2;
  --bg:#F5F8FB;
  --surface:#FFFFFF;
  --text:#14212E;
  --muted:#5B6B7C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(16,42,71,.06);
  --shadow-2:0 12px 32px -12px rgba(16,42,71,.20);
  --section-gap:88px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,sans-serif;
  --font-num:"Inter","Roboto","Helvetica Neue",Arial,sans-serif;

  --bs-primary:#1B5FA8;
  --bs-body-color:#14212E;
  --bs-border-color:#E3EAF2;
  --bs-border-radius:14px;
  --bs-link-color:#1B5FA8;
  --bs-link-hover-color:#14487F;
  --bs-font-sans-serif:var(--font-cn);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-700);}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{letter-spacing:-.01em;margin:0;font-weight:700;color:var(--text);}
p{margin:0 0 16px;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}

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

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:10px;
  background:var(--brand-600);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  font-weight:700;
  flex:0 0 auto;
}
.brand-text{
  display:block;
  font-size:16px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.01em;
}
.brand-sub{
  display:block;
  font-size:11px;
  color:var(--muted);
  line-height:1.4;
  letter-spacing:.02em;
}
.nav-cards{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-card{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  font-weight:600;
  color:var(--text);
  padding:8px 12px;
  border-radius:10px;
  border:1px solid transparent;
  position:relative;
  white-space:nowrap;
  transition:background-color .2s ease,transform .2s ease,color .2s ease;
}
.nav-card i{font-size:15px;color:var(--brand-600);}
.nav-card:hover{
  background:var(--brand-50);
  color:var(--brand-700);
  transform:translateY(-1px);
}
.nav-card.active{color:var(--brand-700);background:var(--brand-50);}
.nav-card.active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--accent-500);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

.btn-c{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:14px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-c-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1);}
.btn-c-primary:hover{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-2);}
.btn-c-primary:active{transform:translateY(1px);}
.btn-c-outline{background:transparent;color:var(--brand-600);border-color:var(--line);}
.btn-c-outline:hover{background:var(--brand-50);border-color:var(--brand-50);color:var(--brand-700);}
.btn-c-accent{background:var(--accent-500);color:#fff;}
.btn-c-accent:hover{background:#E86A20;color:#fff;}
.btn-c-ghost{background:transparent;color:var(--muted);padding:0 8px;height:auto;}
.btn-c-ghost:hover{color:var(--brand-700);}
.btn-c-sm{height:38px;padding:0 16px;font-size:13px;}

.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--surface);
  color:var(--brand-900);
  font-size:17px;
  cursor:pointer;
  margin-left:auto;
}

/* 抽屉 */
.nav-drawer{
  width:86% !important;
  max-width:340px;
  background:var(--surface);
  border-left:1px solid var(--line);
}
.nav-drawer .offcanvas-header{
  padding:18px 20px;
  border-bottom:1px solid var(--line);
}
.nav-drawer .offcanvas-body{padding:18px 20px 24px;}
.drawer-title{
  font-size:12px;
  color:var(--muted);
  letter-spacing:.08em;
  margin:8px 0 10px;
  font-weight:600;
}
.drawer-card{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 14px;
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:10px;
  font-size:14px;
  font-weight:600;
  color:var(--text);
  background:var(--surface);
}
.drawer-card i{color:var(--brand-600);width:18px;text-align:center;}
.drawer-card:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-card.active{border-color:var(--accent-500);background:var(--accent-100);color:var(--brand-700);}
.drawer-cta{display:grid;gap:10px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.drawer-cta .btn-c{width:100%;}

/* ---------- 内页 Hero ---------- */
.hero-sm{
  position:relative;
  min-height:268px;
  display:flex;
  align-items:center;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero-sm::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(14,42,71,.90) 0%,rgba(14,42,71,.72) 55%,rgba(20,72,127,.58) 100%);
}
.hero-sm::after{
  content:"";
  position:absolute;
  inset:0;
  opacity:.05;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.9) 0 1px,transparent 1px 22px);
  pointer-events:none;
}
.hero-sm .container{position:relative;z-index:2;padding-top:44px;padding-bottom:44px;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:14px;
}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:#fff;}
.crumb .sep{opacity:.5;}
.crumb .now{color:#fff;font-weight:600;}
.hero-sm h1{
  color:#fff;
  font-size:36px;
  line-height:1.3;
  max-width:820px;
  margin-bottom:12px;
}
.hero-sm .lead{
  color:rgba(255,255,255,.86);
  font-size:16px;
  max-width:720px;
  margin-bottom:22px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12.5px;
  color:#fff;
  border:1px solid rgba(255,255,255,.34);
  background:rgba(255,255,255,.10);
  border-radius:999px;
  padding:5px 13px;
}
.hero-tag i{font-size:12px;color:var(--accent-500);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-actions .btn-c-outline{color:#fff;border-color:rgba(255,255,255,.45);}
.hero-actions .btn-c-outline:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.6);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-gap) 0;}
.section-tight{padding:56px 0;}
.section-surface{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand-600);
  background:var(--brand-50);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:16px;
}
.section-head h2{font-size:28px;line-height:1.35;margin-bottom:12px;}
.section-head p{font-size:15.5px;color:var(--muted);margin:0;}

/* ---------- 交替图文 ---------- */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  gap:48px;
  margin-bottom:64px;
}
.feature-row:last-child{margin-bottom:0;}
.feature-row.reverse .feature-media{order:2;}
.feature-row.reverse .feature-text{order:1;}
.feature-media{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  border:1px solid var(--line);
  background:var(--surface);
}
.feature-media img{width:100%;height:320px;}
.feature-media .media-badge{
  position:absolute;
  left:16px;
  top:16px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  color:var(--brand-700);
  background:rgba(255,255,255,.94);
  border-radius:999px;
  padding:5px 12px;
  box-shadow:var(--shadow-1);
}
.feature-text{
  background:var(--surface);
  border:1px solid var(--line);
  border-top:3px solid var(--accent-500);
  border-radius:var(--radius-card);
  padding:28px 26px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.feature-text:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.feature-text h3{font-size:20px;margin-bottom:12px;}
.feature-text p{font-size:15px;color:var(--muted);margin-bottom:16px;}
.feature-list li{
  position:relative;
  padding-left:22px;
  font-size:14.5px;
  color:var(--text);
  margin-bottom:9px;
  line-height:1.75;
}
.feature-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--teal-500);
}
.feature-kv{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--line);
}
.kv-pill{
  font-size:12.5px;
  color:var(--brand-700);
  background:var(--brand-50);
  border-radius:999px;
  padding:5px 12px;
  font-weight:600;
}

/* ---------- 规格表 ---------- */
.table-wrap{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.table-wrap::after{
  content:"横向滑动查看完整对比";
  position:absolute;
  right:12px;
  bottom:10px;
  font-size:11.5px;
  color:var(--muted);
  background:rgba(255,255,255,.9);
  border-radius:999px;
  padding:2px 10px;
  pointer-events:none;
}
.spec-table{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:14px;
  margin:0;
}
.spec-table caption{
  caption-side:top;
  text-align:left;
  padding:20px 24px 6px;
  font-size:13px;
  color:var(--muted);
}
.spec-table thead th{
  background:var(--brand-50);
  color:var(--brand-900);
  font-size:13.5px;
  font-weight:700;
  text-align:left;
  padding:14px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.spec-table tbody th{
  text-align:left;
  font-weight:600;
  color:var(--text);
  padding:14px 20px;
  background:transparent;
  white-space:nowrap;
}
.spec-table td{
  padding:14px 20px;
  color:var(--muted);
  border-top:1px solid var(--line);
  vertical-align:top;
}
.spec-table tbody tr:nth-child(even){background:#FAFCFE;}
.spec-table tbody tr:hover{background:var(--brand-50);}
.spec-table td strong{color:var(--text);font-weight:600;}
.dot-ok{color:var(--teal-500);font-weight:700;}

/* ---------- 会员权益提示横带 ---------- */
.benefit-band{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:32px;
  display:grid;
  grid-template-columns:280px 1fr;
  gap:32px;
  align-items:center;
}
.benefit-band h2{font-size:24px;line-height:1.35;margin-bottom:10px;}
.benefit-band .band-desc{font-size:14.5px;color:var(--muted);margin:0;}
.band-items{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.band-item{
  border:1px solid var(--line);
  border-radius:12px;
  padding:18px;
  background:var(--surface);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.band-item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--brand-50);}
.band-item i{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:10px;
  background:var(--brand-50);
  color:var(--brand-600);
  font-size:15px;
  margin-bottom:12px;
}
.band-item h3{font-size:16px;margin-bottom:6px;}
.band-item p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.7;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  background:var(--brand-900);
  color:#fff;
  padding:72px 0;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  opacity:.05;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.9) 0 1px,transparent 1px 22px);
  pointer-events:none;
}
.cta-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1fr 400px;
  gap:48px;
  align-items:center;
}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35;margin-bottom:14px;}
.cta-points li{
  position:relative;
  padding-left:24px;
  font-size:15px;
  color:rgba(255,255,255,.82);
  margin-bottom:10px;
}
.cta-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:9px;
  height:9px;
  border-radius:2px;
  background:var(--accent-500);
}
.cta-card{
  background:var(--surface);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-2);
  color:var(--text);
}
.cta-card h3{font-size:17px;margin-bottom:6px;}
.cta-card .cta-hint{font-size:13px;color:var(--muted);margin-bottom:18px;}
.field{display:grid;gap:10px;margin-bottom:12px;}
.field label{font-size:13px;font-weight:600;color:var(--muted);}
.field-row{display:grid;grid-template-columns:1fr auto;gap:10px;}
.input-c{
  width:100%;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  padding:0 14px;
  font-size:14px;
  color:var(--text);
  background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.input-c::placeholder{color:#9AA9B8;}
.input-c:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(27,95,168,.12);}
.cta-card .btn-c{width:100%;}
.cta-note{font-size:12px;color:var(--muted);margin:12px 0 0;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.78);
  padding:64px 0 0;
  font-size:13px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:16px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand .brand-mark{background:var(--brand-600);}
.site-footer p{font-size:13px;line-height:1.8;color:rgba(255,255,255,.66);}
.footer-title{
  color:#fff;
  font-size:14px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-links li{margin-bottom:9px;}
.footer-links a{
  color:rgba(255,255,255,.66);
  font-size:13px;
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:#fff;transform:translateY(2px);}
.footer-qr{
  width:72px;
  height:72px;
  border-radius:12px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:26px;
  flex:0 0 auto;
}
.footer-bottom{
  margin-top:44px;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:12.5px;
  color:rgba(255,255,255,.56);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-card{padding:8px 10px;font-size:12.5px;}
  .nav-cards{gap:4px;}
}
@media (max-width:991px){
  .nav-cards,.nav-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-sm h1{font-size:30px;}
  .feature-row{grid-template-columns:1fr;gap:24px;margin-bottom:48px;}
  .feature-row.reverse .feature-media{order:1;}
  .feature-row.reverse .feature-text{order:2;}
  .feature-media img{height:260px;}
  .benefit-band{grid-template-columns:1fr;gap:24px;padding:26px;}
  .band-items{grid-template-columns:1fr 1fr;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.75;}
  .container{padding:0 16px;}
  .nav-inner{min-height:60px;gap:12px;}
  .brand-text{font-size:14.5px;}
  .brand-sub{display:none;}
  .hero-sm{min-height:240px;}
  .hero-sm .container{padding-top:36px;padding-bottom:36px;}
  .hero-sm h1{font-size:26px;}
  .hero-sm .lead{font-size:15px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn-c{width:100%;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:22px;}
  .feature-media img{height:210px;}
  .feature-text{padding:20px 18px;}
  .band-items{grid-template-columns:1fr;}
  .benefit-band{padding:20px;}
  .cta-band{padding:56px 0;}
  .cta-band h2{font-size:22px;}
  .cta-card{padding:20px;}
  .field-row{grid-template-columns:1fr;}
  .field-row .btn-c{width:100%;}
  .site-footer{padding-top:48px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:520px){
  .hero-sm h1{font-size:23px;}
  .hero-tag{font-size:12px;padding:4px 11px;}
  .feature-media img{height:180px;}
  .spec-table{font-size:13px;}
}

/* roulang page: category3 */
:root{
  --brand-600:#1B5FA8;
  --brand-700:#14487F;
  --brand-900:#0E2A47;
  --brand-50:#EEF4FB;
  --accent-500:#FF7A2F;
  --accent-100:#FFE9DC;
  --teal-500:#17BFA0;
  --line:#E3EAF2;
  --bg:#F5F8FB;
  --surface:#FFFFFF;
  --text:#14212E;
  --muted:#5B6B7C;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(16,42,71,.06);
  --sh-2:0 12px 32px -12px rgba(16,42,71,.20);
  --sec:88px;

  --bs-primary:#1B5FA8;
  --bs-primary-rgb:27,95,168;
  --bs-body-color:#14212E;
  --bs-body-bg:#F5F8FB;
  --bs-border-color:#E3EAF2;
  --bs-border-radius:14px;
  --bs-link-color:#1B5FA8;
  --bs-link-hover-color:#14487F;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC","Inter",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Inter",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
}
h1,h2,h3,h4{margin:0;letter-spacing:-0.01em;font-weight:700;color:var(--text);}
p{margin:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease,box-shadow .2s ease;}
a:hover{color:var(--brand-700);}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--accent-500);
  outline-offset:2px;
  border-radius:6px;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--sec) 0;}
.section-tight{padding:64px 0;}
.bg-surface{background:var(--surface);}
.bg-cool{background:var(--bg);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--text);
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:11px;
  background:var(--brand-600);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  font-weight:700;
  flex-shrink:0;
  box-shadow:0 6px 16px -8px rgba(27,95,168,.75);
}
.brand-text{
  display:block;
  font-size:17px;
  font-weight:700;
  line-height:1.2;
  color:var(--brand-900);
}
.brand-sub{
  display:block;
  font-size:11px;
  line-height:1.6;
  color:var(--muted);
  white-space:nowrap;
}
.nav-cards{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-card{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 12px;
  border-radius:var(--r-btn);
  font-size:13px;
  line-height:1.2;
  color:var(--text);
  border:1px solid transparent;
  position:relative;
  white-space:nowrap;
}
.nav-card i{font-size:15px;color:var(--brand-600);}
.nav-card:hover{
  background:var(--brand-50);
  transform:translateY(-1px);
  color:var(--brand-700);
}
.nav-card.active{
  background:var(--brand-50);
  color:var(--brand-700);
  font-weight:600;
}
.nav-card.active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--accent-500);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.btn-c{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
}
.btn-c-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 20px -12px rgba(27,95,168,.9);}
.btn-c-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}
.btn-c-primary:active{transform:translateY(1px);}
.btn-c-outline{background:transparent;color:var(--brand-700);border-color:var(--line);}
.btn-c-outline:hover{background:var(--brand-50);border-color:#CFE0F2;color:var(--brand-700);transform:translateY(-1px);}
.btn-c-ghost{background:transparent;color:var(--brand-600);height:auto;padding:0;font-weight:600;}
.btn-c-ghost:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px;}
.btn-c-accent{background:var(--accent-500);color:#fff;}
.btn-c-accent:hover{background:#F06A1D;color:#fff;transform:translateY(-1px);}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:11px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--brand-700);
  font-size:17px;
  align-items:center;
  justify-content:center;
  margin-left:auto;
}

/* ---------- 移动抽屉 ---------- */
.drawer{
  --bs-offcanvas-width:86%;
  background:var(--surface);
  border-left:1px solid var(--line);
}
.drawer .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:16px 18px;
}
.drawer .offcanvas-title{font-size:15px;font-weight:700;color:var(--brand-900);}
.drawer .offcanvas-body{padding:16px 18px 22px;display:flex;flex-direction:column;gap:8px;}
.drawer .nav-card{
  padding:12px 14px;
  font-size:14px;
  border:1px solid var(--line);
  border-radius:12px;
}
.drawer .nav-card.active{border-color:#CFE0F2;}
.drawer .nav-card.active::after{display:none;}
.drawer-cta{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.drawer-cta .btn-c{width:100%;}

/* ---------- 内部页 Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--brand-900);
  padding:52px 0 56px;
  min-height:240px;
}
.page-hero .hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.85;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(115deg,rgba(14,42,71,.94) 0%,rgba(14,42,71,.86) 46%,rgba(14,42,71,.72) 100%),
    repeating-linear-gradient(115deg,rgba(255,255,255,.045) 0 1px,transparent 1px 14px);
}
.page-hero .container{position:relative;z-index:2;}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.66);
  margin-bottom:18px;
}
.crumb a{color:rgba(255,255,255,.78);}
.crumb a:hover{color:#fff;}
.crumb span.sep{opacity:.5;}
.crumb .current{color:#fff;font-weight:600;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(255,122,47,.16);
  color:#FFC79F;
  font-size:13px;
  font-weight:600;
  margin-bottom:16px;
}
.page-hero h1{
  color:#fff;
  font-size:40px;
  line-height:1.28;
  margin-bottom:16px;
  max-width:820px;
}
.page-hero .hero-lead{
  color:rgba(255,255,255,.82);
  font-size:16px;
  max-width:720px;
  line-height:1.85;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.page-hero .btn-c-outline{
  color:#fff;
  border-color:rgba(255,255,255,.4);
}
.page-hero .btn-c-outline:hover{
  background:rgba(255,255,255,.12);
  border-color:rgba(255,255,255,.7);
  color:#fff;
}

/* ---------- 通用板块标题 ---------- */
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.sec-head .eyebrow{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--brand-600);
  letter-spacing:.06em;
  margin-bottom:8px;
}
.sec-head h2{font-size:28px;line-height:1.35;}
.sec-head p{margin-top:10px;color:var(--muted);max-width:640px;font-size:15px;}
.sec-head .head-link{font-size:14px;font-weight:600;white-space:nowrap;padding-bottom:4px;}

/* ---------- 卡片矩阵 ---------- */
.matrix{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.m-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  gap:12px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.m-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:#CFE0F2;
}
.m-card:active{transform:translateY(1px);}
.m-icon{
  width:42px;
  height:42px;
  border-radius:12px;
  background:var(--brand-50);
  color:var(--brand-600);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
}
.m-card h3{font-size:18px;line-height:1.45;}
.m-card p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.m-card ul{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
.m-card ul li{
  position:relative;
  padding-left:20px;
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
}
.m-card ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:7px;
  height:7px;
  border-radius:2px;
  background:var(--teal-500);
}
.m-card .m-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--muted);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
.m-card .m-foot a{font-weight:600;font-size:13px;}
.m-card.wide{
  grid-column:span 2;
  background:linear-gradient(180deg,var(--brand-50) 0%,var(--surface) 42%);
  border-color:#CFE0F2;
}
.m-card.wide .m-icon{background:var(--brand-600);color:#fff;}
.m-card.wide h3{font-size:20px;}
.m-card.wide .wide-cols{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px 22px;
  margin-top:4px;
}

/* ---------- 标签行 ---------- */
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:0 0 28px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:38px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--muted);
  font-size:13.5px;
  font-weight:600;
  cursor:default;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{background:var(--brand-50);color:var(--brand-700);border-color:#CFE0F2;}
.chip.is-active{
  background:var(--brand-600);
  border-color:var(--brand-600);
  color:#fff;
}
.chip-note{font-size:13px;color:var(--muted);margin-bottom:22px;}

/* ---------- 表格说明 ---------- */
.table-wrap{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.spec-table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  font-size:14.5px;
}
table.spec-table thead th{
  background:var(--brand-50);
  color:var(--brand-900);
  font-size:13.5px;
  font-weight:700;
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.spec-table tbody td{
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  color:var(--muted);
  vertical-align:top;
  line-height:1.75;
}
table.spec-table tbody tr:nth-child(odd) td{background:#FBFDFF;}
table.spec-table tbody tr:hover td{background:var(--brand-50);}
table.spec-table tbody tr:last-child td{border-bottom:0;}
table.spec-table td:first-child{
  color:var(--text);
  font-weight:600;
  width:23%;
}
.badge-soft{
  display:inline-flex;
  align-items:center;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  background:var(--accent-100);
  color:#C9550F;
  white-space:nowrap;
}
.badge-soft.blue{background:var(--brand-50);color:var(--brand-700);}
.badge-soft.teal{background:rgba(23,191,160,.14);color:#0E8F79;}
.table-fade{
  position:absolute;
  top:0;
  right:0;
  width:48px;
  height:100%;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.95));
  pointer-events:none;
}
.table-tip{
  display:flex;
  gap:10px;
  align-items:flex-start;
  margin-top:16px;
  padding:14px 18px;
  border-radius:12px;
  background:var(--accent-100);
  color:#8A3D06;
  font-size:14px;
  line-height:1.75;
}
.table-tip i{margin-top:3px;color:var(--accent-500);}

/* ---------- 权益提示带 ---------- */
.benefit-strip{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:26px 28px;
  background:var(--surface);
  border:1px solid var(--line);
  border-left:4px solid var(--accent-500);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
.benefit-strip h3{font-size:18px;margin-bottom:6px;}
.benefit-strip p{font-size:14.5px;color:var(--muted);}
.benefit-strip .strip-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;}
.benefit-strip .strip-tags span{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--brand-700);
  background:var(--brand-50);
  border-radius:999px;
  padding:5px 12px;
  font-weight:600;
}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  border:0;
  border-bottom:1px solid var(--line);
  background:transparent;
}
.faq-acc .accordion-item:first-child{border-top:1px solid var(--line);}
.faq-acc .accordion-button{
  position:relative;
  background:transparent;
  border:0;
  border-radius:0;
  box-shadow:none;
  padding:20px 56px 20px 54px;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--brand-700);
  background:var(--brand-50);
}
.faq-acc .accordion-button:not(.collapsed)::before{
  content:"";
  position:absolute;
  left:0;
  top:14px;
  bottom:14px;
  width:3px;
  border-radius:2px;
  background:var(--accent-500);
}
.faq-acc .accordion-button:focus{box-shadow:none;}
.faq-acc .accordion-button::after{
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  width:auto;
  height:auto;
  background-image:none;
  content:"+";
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--muted);
  transition:color .2s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  content:"−";
  color:var(--accent-500);
}
.fq-num{
  position:absolute;
  left:18px;
  top:50%;
  transform:translateY(-50%);
  font-size:13px;
  font-weight:600;
  color:var(--muted);
  letter-spacing:.04em;
}
.faq-acc .accordion-body{
  padding:2px 44px 24px 54px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}
.faq-acc .accordion-body strong{color:var(--text);}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--brand-900);
  padding:76px 0;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 16px),
    repeating-linear-gradient(25deg,rgba(255,255,255,.03) 0 1px,transparent 1px 22px);
}
.cta-band .container{position:relative;z-index:2;}
.cta-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.cta-copy h2{
  color:#fff;
  font-size:30px;
  line-height:1.4;
  margin-bottom:16px;
}
.cta-copy p{color:rgba(255,255,255,.76);font-size:15.5px;max-width:520px;}
.cta-points{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:24px;
}
.cta-points li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  color:rgba(255,255,255,.86);
  font-size:14.5px;
}
.cta-points li i{color:var(--teal-500);margin-top:5px;}
.form-card{
  background:var(--surface);
  border-radius:16px;
  padding:26px;
  box-shadow:0 24px 48px -24px rgba(0,0,0,.55);
}
.form-card h3{font-size:18px;margin-bottom:6px;}
.form-card .form-hint{font-size:13px;color:var(--muted);margin-bottom:18px;}
.field-label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--text);
  margin-bottom:8px;
}
.field-row{display:flex;gap:10px;}
.field-row input{
  flex:1 1 auto;
  min-width:0;
  height:46px;
  border-radius:var(--r-input);
  border:1px solid var(--line);
  background:#fff;
  padding:0 14px;
  font-size:15px;
  color:var(--text);
}
.field-row input::placeholder{color:#9AA8B6;}
.field-row input:focus{
  border-color:var(--brand-600);
  outline:2px solid rgba(255,122,47,.5);
  outline-offset:1px;
}
.btn-code{
  flex:0 0 auto;
  height:46px;
  padding:0 16px;
  border-radius:var(--r-input);
  border:1px solid var(--line);
  background:var(--brand-50);
  color:var(--brand-700);
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease;
}
.btn-code:hover{background:#E1ECF8;}
.form-card .btn-c{width:100%;margin-top:16px;}
.form-foot{
  margin-top:14px;
  font-size:12.5px;
  color:var(--muted);
  line-height:1.7;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  font-size:14px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-brand .brand-mark{background:var(--brand-600);}
.site-footer p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.68);}
.footer-title{
  color:#fff;
  font-size:14px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  color:rgba(255,255,255,.66);
  font-size:13px;
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{
  color:#fff;
  transform:translateY(2px);
  text-decoration:underline;
  text-underline-offset:4px;
}
.footer-qr{
  width:74px;
  height:74px;
  border-radius:12px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:26px;
  flex-shrink:0;
}
.footer-bottom{
  margin-top:48px;
  padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:12.5px;
  color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .container{max-width:1200px;}
}
@media (max-width:1199px){
  .nav-card{padding:8px 10px;font-size:12.5px;}
  .brand-sub{display:none;}
  .matrix{grid-template-columns:repeat(2,minmax(0,1fr));}
  .m-card.wide{grid-column:span 2;}
  .cta-grid{gap:32px;}
}
@media (max-width:991px){
  :root{--sec:64px;}
  .nav-cards,.nav-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .page-hero h1{font-size:32px;}
  .cta-grid{grid-template-columns:1fr;}
  .benefit-strip{flex-direction:column;align-items:flex-start;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.75;}
  :root{--sec:56px;}
  .container{padding:0 16px;}
  .nav-inner{min-height:60px;}
  .brand-mark{width:34px;height:34px;font-size:16px;}
  .brand-text{font-size:15px;}
  .page-hero{padding:38px 0 44px;}
  .page-hero h1{font-size:26px;line-height:1.38;}
  .page-hero .hero-lead{font-size:15px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-c{width:100%;}
  .sec-head h2,.cta-copy h2{font-size:22px;}
  .matrix{grid-template-columns:1fr;gap:16px;}
  .m-card.wide .wide-cols{grid-template-columns:1fr;}
  .m-card{padding:18px;}
  .faq-acc .accordion-button{padding:18px 46px 18px 44px;font-size:15.5px;}
  .faq-acc .accordion-body{padding:2px 22px 20px 44px;font-size:14.5px;}
  .fq-num{left:14px;font-size:12px;}
  .field-row{flex-direction:column;}
  .btn-code{width:100%;}
  .form-card{padding:20px;}
  .footer-bottom{flex-direction:column;}
  .table-tip{font-size:13.5px;}
}
@media (max-width:519px){
  .brand-text{font-size:14px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .chip{height:34px;padding:0 13px;font-size:13px;}
}