/* roulang page: index */
:root{
  --brand:#1C4E80;
  --brand-dark:#123A61;
  --brand-soft:#E8EFF7;
  --accent:#E07A2F;
  --accent-soft:#FDF1E6;
  --teal:#2E8B7A;
  --ink:#17212B;
  --muted:#5A6675;
  --weak:#8B96A5;
  --line:#E6EAF0;
  --bg:#F6F7F9;
  --card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh1:0 2px 8px rgba(23,33,43,.06);
  --sh2:0 10px 28px rgba(28,78,128,.12);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  padding-bottom:calc(60px + env(safe-area-inset-bottom));
}
@media (min-width:768px){body{padding-bottom:0;}}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:0;list-style:none;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:768px){.container-x{padding-left:32px;padding-right:32px;}}
.section{padding-top:56px;padding-bottom:56px;}
@media (min-width:1024px){.section{padding-top:88px;padding-bottom:88px;}}
.h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.5px;}
.h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.3px;}
.h3{font-size:18px;line-height:1.45;font-weight:600;}
.lead{font-size:16px;line-height:1.85;color:var(--muted);}
.small{font-size:13px;line-height:1.6;color:var(--weak);}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:all .2s ease-out;white-space:nowrap;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh1);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-primary:active{transform:none;}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand-soft);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh1);}
.btn-accent:hover{background:#c9691f;transform:translateY(-1px);box-shadow:var(--sh2);}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn:disabled{opacity:.4;cursor:not-allowed;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.textlink{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;}
.textlink .arw{transition:transform .2s ease-out;}
.textlink:hover{text-decoration:underline;}
.textlink:hover .arw{transform:translateX(2px);}

/* header */
.topbar{background:#F6F7F9;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted);}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;}
.topbar a:hover{color:var(--brand);}
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out;}
.site-header.scrolled{box-shadow:var(--sh1);}
.nav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.logo{display:flex;align-items:center;gap:10px;}
.logo-mark{width:28px;height:28px;border-radius:8px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex:none;}
.logo-text{font-size:20px;font-weight:700;color:var(--brand);letter-spacing:-.2px;}
.nav-links{display:none;align-items:center;gap:4px;}
@media (min-width:1024px){.nav-links{display:flex;}}
.nav-link{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--ink);transition:all .18s ease-out;position:relative;}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.active{color:var(--brand);font-weight:700;}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--brand);border-radius:2px;}
.nav-drop{position:relative;}
.nav-drop-panel{position:absolute;top:calc(100% + 10px);left:0;min-width:220px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh2);padding:10px;opacity:0;visibility:hidden;transform:translateY(6px);transition:all .2s ease-out;}
.nav-drop:hover .nav-drop-panel,.nav-drop:focus-within .nav-drop-panel{opacity:1;visibility:visible;transform:translateY(0);}
.nav-drop-panel a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--muted);}
.nav-drop-panel a:hover{background:var(--brand-soft);color:var(--brand);}
.header-cta{display:none;}
@media (min-width:1024px){.header-cta{display:inline-flex;}}

/* countdown */
.countdown-bar{background:rgba(28,78,128,.08);border-bottom:1px solid var(--line);}
.countdown-inner{min-height:64px;padding-top:10px;padding-bottom:10px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;}
@media (min-width:1024px){.countdown-inner{min-height:56px;flex-wrap:nowrap;padding-top:0;padding-bottom:0;}}
.cd-label{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--brand);}
.cd-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none;}
.cd-group{display:flex;align-items:center;gap:8px;flex-wrap:nowrap;}
.cd-cell{width:40px;height:46px;background:#fff;border-radius:10px;box-shadow:var(--sh1);display:flex;flex-direction:column;align-items:center;justify-content:center;}
@media (min-width:1024px){.cd-cell{width:48px;height:52px;}}
.cd-num{font-size:20px;font-weight:700;color:var(--accent);line-height:1.1;}
@media (min-width:1024px){.cd-num{font-size:24px;}}
.cd-unit{font-size:11px;color:var(--weak);line-height:1.2;}

/* hero */
.hero{position:relative;overflow:hidden;background:#fff;}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(28,78,128,.14) 1px,transparent 1px);background-size:24px 24px;opacity:.06;pointer-events:none;}
.hero-grid{position:relative;display:grid;gap:36px;padding-top:40px;padding-bottom:48px;}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;align-items:center;padding-top:56px;padding-bottom:64px;min-height:560px;gap:52px;}}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--accent-soft);color:#a85a17;font-size:13px;font-weight:600;padding:6px 12px;border-radius:999px;}
.hero-sub{font-size:18px;line-height:1.7;color:var(--brand);font-weight:600;}
.hero-points{display:grid;gap:10px;margin-top:24px;}
.hero-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--muted);}
.tick{width:18px;height:18px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;flex:none;margin-top:4px;}
.hero-figure{position:relative;}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;box-shadow:var(--sh2);}
.hero-tag{position:absolute;left:-8px;bottom:22px;background:var(--accent);color:#fff;font-size:13px;font-weight:700;padding:8px 14px;border-radius:10px;box-shadow:var(--sh1);}

/* feature grid 1 big + 2 small */
.feat-grid{display:grid;gap:20px;}
@media (min-width:1024px){.feat-grid{grid-template-columns:1.15fr .85fr;}.feat-side{display:grid;gap:20px;align-content:start;}}
.feat-big{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);overflow:hidden;display:flex;flex-direction:column;transition:all .22s ease-out;}
.feat-big:hover{box-shadow:var(--sh2);transform:translateY(-4px);}
.feat-big img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.feat-big-body{padding:24px;}
.num-big{font-size:40px;font-weight:700;color:var(--brand-soft);line-height:1;}
.num-block{width:32px;height:32px;border-radius:8px;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;flex:none;}
.feat-strip{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:22px;display:flex;gap:16px;transition:all .22s ease-out;}
.feat-strip:hover{box-shadow:var(--sh2);transform:translateY(-4px);}

/* wall */
.wall{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
@media (min-width:1024px){.wall{grid-template-columns:repeat(4,1fr);gap:20px;}.wall > *:nth-child(2n){transform:translateY(24px);}}
.wall-item{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh1);transition:all .22s ease-out;}
.wall-item:hover{box-shadow:var(--sh2);}
.wall-item img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;transition:transform .3s ease-out;}
.wall-item:hover img{transform:scale(1.03);}
.wall-tag{position:absolute;top:12px;left:12px;background:rgba(224,122,47,.12);color:var(--brand);font-size:12px;font-weight:600;padding:5px 10px;border-radius:999px;backdrop-filter:none;}
.wall-cap{padding:12px 14px;font-size:14px;font-weight:600;color:var(--ink);}

/* stats */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
@media (min-width:1024px){.stats{grid-template-columns:repeat(4,1fr);gap:20px;}}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:22px;}
.stat-num{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--brand);line-height:1.1;}
.stat-label{font-size:13px;color:var(--muted);margin-top:6px;}
.quote-card{background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh1);}
.quote-card p{font-size:15px;color:var(--muted);}
.quote-name{font-size:14px;font-weight:600;color:var(--ink);margin-top:14px;}

/* CTA band */
.cta-band{background:var(--brand);background-image:linear-gradient(115deg,rgba(224,122,47,.22) 0%,rgba(28,78,128,0) 55%);color:#fff;}
.cta-grid{display:grid;gap:32px;padding-top:56px;padding-bottom:56px;}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;align-items:center;gap:48px;padding-top:72px;padding-bottom:72px;}}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.88);margin-top:10px;}
.cta-points .tick{background:rgba(255,255,255,.18);color:#fff;}
.form-card{background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:var(--sh2);color:var(--ink);}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px;}
.field input,.field textarea{width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px;background:#fff;transition:all .18s ease-out;}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(28,78,128,.10);}
.field.error input,.field.error textarea{border-color:var(--accent);}
.field-msg{display:none;font-size:12px;color:var(--accent);margin-top:6px;}
.field.error .field-msg{display:block;}
.form-note{font-size:12px;color:var(--weak);margin-top:12px;line-height:1.6;}
.form-ok{display:none;margin-top:12px;font-size:13px;color:var(--teal);font-weight:600;}
.form-ok.show{display:block;}

/* faq */
.faq-grid{display:grid;gap:28px;}
@media (min-width:1024px){.faq-grid{grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start;}}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;background:none;border:none;text-align:left;font-size:16px;font-weight:600;cursor:pointer;color:var(--ink);transition:color .18s ease-out;}
.faq-q:hover{color:var(--brand);}
.faq-icon{width:24px;height:24px;flex:none;color:var(--brand);transition:transform .22s ease-out;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease-out;}
.faq-a p{font-size:15px;line-height:1.8;color:var(--muted);padding-bottom:18px;}

/* news */
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);overflow:hidden;transition:all .22s ease-out;}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.news-thumb{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;background:#E6EAF0;}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge-cat{align-self:flex-start;display:inline-block;font-size:12px;font-weight:600;color:var(--teal);background:rgba(46,139,122,.10);padding:4px 10px;border-radius:999px;}
.news-title{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-sum{font-size:14px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-card);padding:40px 20px;text-align:center;background:#fff;}

/* footer */
.site-footer{background:var(--brand-dark);color:#fff;margin-top:0;}
.footer-grid{display:grid;gap:28px;padding-top:56px;padding-bottom:36px;}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-top:72px;}}
.footer-title{font-size:15px;font-weight:700;margin-bottom:14px;color:#fff;}
.footer-grid a,.footer-grid p,.footer-grid li{font-size:14px;color:rgba(255,255,255,.72);}
.footer-grid a{display:inline-block;padding:4px 0;border-radius:6px;transition:all .18s ease-out;}
.footer-grid a:hover{color:#fff;background:rgba(255,255,255,.06);padding-left:8px;}
.qr-box{width:96px;height:96px;border-radius:12px;background:rgba(255,255,255,.10);border:1px dashed rgba(255,255,255,.28);display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(255,255,255,.6);text-align:center;padding:8px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:18px;padding-bottom:18px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);}

/* mobile tab bar */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:70;height:60px;background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(23,33,43,.07);display:grid;grid-template-columns:repeat(5,1fr);padding-bottom:env(safe-area-inset-bottom);}
@media (min-width:768px){.tabbar{display:none;}}
.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--weak);transition:color .18s ease-out;}
.tab-item.active{color:var(--brand);font-weight:700;}
.tab-item svg{width:22px;height:22px;}
.above-tab{position:fixed;bottom:calc(60px + env(safe-area-inset-bottom) + 12px);left:16px;right:16px;z-index:69;display:none;}
@media (max-width:767px){.above-tab{display:block;}}
.float-btn{width:100%;height:48px;border-radius:999px;background:var(--accent);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;gap:8px;box-shadow:var(--sh2);}

/* roulang page: article */
:root{
  --brand:#1C4E80;
  --brand-dark:#123A61;
  --brand-soft:#E8EFF7;
  --accent:#E07A2F;
  --accent-soft:#FDF1E6;
  --green:#2E8B7A;
  --ink:#17212B;
  --muted:#5A6675;
  --faint:#8B96A5;
  --line:#E6EAF0;
  --bg:#F6F7F9;
  --card:#FFFFFF;
  --radius:14px;
  --shadow-1:0 2px 8px rgba(23,33,43,.06);
  --shadow-2:0 10px 28px rgba(28,78,128,.12);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:0;}
.container-x{max-width:1200px;margin:0 auto;padding:0 20px;width:100%;}
@media (min-width:768px){.container-x{padding:0 32px;}}
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:88px 0;}}
.section-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;margin-bottom:8px;}
.section-head p{color:var(--muted);font-size:15px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:600;text-decoration:none;transition:color .2s ease-out;}
.link-arrow span{transition:transform .2s ease-out;}
.link-arrow:hover{text-decoration:underline;}
.link-arrow:hover span{transform:translateX(2px);}

/* ---------- 顶部工具条 ---------- */
.topbar{display:none;background:var(--bg);border-bottom:1px solid var(--line);}
@media (min-width:1024px){.topbar{display:block;}}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}
.topbar-inner .group{display:flex;align-items:center;gap:14px;}
.topbar-inner a{color:var(--muted);text-decoration:none;transition:color .18s ease-out;}
.topbar-inner a:hover{color:var(--brand);}
.topbar-inner .sep{width:1px;height:12px;background:var(--line);display:inline-block;}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out;}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.nav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.logo-mark{width:28px;height:28px;border-radius:8px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:0 0 28px;}
.logo-text{font-size:20px;font-weight:700;color:var(--brand);letter-spacing:.5px;}
.nav-links{display:none;align-items:center;gap:2px;}
@media (min-width:768px){.nav-links{display:flex;}}
@media (min-width:1024px){.nav-links{gap:4px;}}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:4px;padding:8px 9px;font-size:14px;color:var(--ink);text-decoration:none;border-radius:8px;transition:all .18s ease-out;white-space:nowrap;}
@media (min-width:1024px){.nav-link{padding:10px 12px;font-size:15px;}}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:9px;right:9px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);}
.nav-drop{position:relative;}
.nav-drop-panel{position:absolute;top:calc(100% + 6px);left:0;min-width:210px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-2);padding:8px;display:none;flex-direction:column;gap:2px;}
.nav-drop:hover .nav-drop-panel,.nav-drop:focus-within .nav-drop-panel{display:flex;}
.nav-drop-panel a{padding:9px 12px;border-radius:8px;font-size:14px;color:var(--ink);text-decoration:none;transition:all .18s ease-out;}
.nav-drop-panel a:hover{background:var(--brand-soft);color:var(--brand);}
.header-cta{display:none;align-items:center;gap:12px;}
@media (min-width:640px){.header-cta{display:flex;}}

/* 移动端底部 Tab */
.mobile-tabbar{position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 18px rgba(23,33,43,.08);padding-bottom:env(safe-area-inset-bottom);}
@media (min-width:768px){.mobile-tabbar{display:none;}}
.mobile-tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr);height:60px;}
.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--faint);text-decoration:none;transition:color .18s ease-out;}
.tab-item svg{width:22px;height:22px;}
.tab-item.is-active{color:var(--brand);font-weight:700;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1.5px solid transparent;border-radius:10px;padding:12px 22px;font-size:15px;font-weight:600;line-height:1.2;text-decoration:none;cursor:pointer;transition:all .2s ease-out;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand-soft);}
.btn-block{width:100%;}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn[disabled]{opacity:.4;cursor:not-allowed;}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 12px;font-size:13px;font-weight:500;background:var(--brand-soft);color:var(--brand);}
.badge-green{background:rgba(46,139,122,.12);color:var(--green);}

/* ---------- 文章页头部 ---------- */
.page-head{background:var(--bg);border-bottom:1px solid var(--line);padding:28px 0 32px;}
@media (min-width:768px){.page-head{padding:36px 0 44px;}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--faint);margin-bottom:16px;}
.breadcrumb a{color:var(--muted);text-decoration:none;transition:color .18s ease-out;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{max-width:240px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--faint);}
.page-head h1{font-size:clamp(28px,4.4vw,40px);line-height:1.25;font-weight:700;letter-spacing:.2px;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:18px;font-size:13px;color:var(--faint);}
.meta-row .dot{width:4px;height:4px;border-radius:999px;background:#C9D2DD;display:inline-block;}

/* ---------- 主体布局 ---------- */
.article-layout{display:grid;gap:32px;padding:40px 0 0;}
@media (min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:48px;padding:56px 0 0;}}

.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;min-width:0;}
@media (min-width:768px){.article-card{padding:32px 36px;}}
.article-hero{border-radius:12px;overflow:hidden;margin-bottom:26px;aspect-ratio:16/9;background:var(--bg);}
.article-hero img{width:100%;height:100%;object-fit:cover;}

.article-body{font-size:16px;min-width:0;overflow-wrap:break-word;word-break:break-word;}
.article-body p{margin:0 0 18px;line-height:1.9;}
.article-body h2{position:relative;font-size:clamp(22px,2.6vw,28px);line-height:1.3;font-weight:700;margin:36px 0 16px;padding-left:16px;}
.article-body h2::before{content:"";position:absolute;left:0;top:.15em;bottom:.15em;width:4px;border-radius:2px;background:var(--brand);}
.article-body h3{font-size:18px;line-height:1.45;font-weight:600;margin:26px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:24px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;line-height:1.85;}
.article-body li::marker{color:var(--brand);}
.article-body blockquote{margin:0 0 20px;background:var(--brand-soft);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;padding:20px;color:var(--brand-dark);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:0 0 20px;}
.article-body figure{margin:0 0 20px;}
.article-body figure img{margin-bottom:8px;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--faint);}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;}
.article-body th{background:var(--brand-soft);color:var(--brand-dark);text-align:left;font-weight:600;}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;}
.article-body tbody tr:nth-child(even){background:var(--bg);}
.table-wrap{overflow-x:auto;margin:0 0 20px;}
.article-body pre{background:#0F2C49;color:#EAF1F8;border-radius:12px;padding:18px;font-size:14px;line-height:1.7;overflow-x:auto;word-break:break-all;margin:0 0 20px;}
.article-body code{word-break:break-all;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

.empty-state{border:1px dashed var(--line);border-radius:var(--radius);padding:48px 24px;text-align:center;background:#fff;}
.empty-state svg{width:40px;height:40px;margin:0 auto 14px;color:var(--faint);}
.empty-state p{font-size:14px;color:var(--faint);margin-bottom:18px;}

/* ---------- 侧栏 ---------- */
.article-side{min-width:0;}
.sidebar-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1);margin-bottom:20px;}
.side-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:600;margin-bottom:14px;}
.side-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand);display:inline-block;}
.toc-list{display:flex;flex-direction:column;}
@media (max-width:1023.98px){.toc-list{display:none;}}
.toc-list a{display:block;padding:8px 10px;font-size:14px;line-height:1.6;color:var(--muted);text-decoration:none;border-left:2px solid transparent;border-radius:0 8px 8px 0;transition:all .18s ease-out;}
.toc-list a:hover{color:var(--brand);background:var(--brand-soft);}
.toc-list a.level-3{padding-left:24px;font-size:13px;}
.toc-list a.is-active{color:var(--brand);font-weight:600;border-left-color:var(--brand);background:var(--brand-soft);}
.toc-chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin;}
@media (min-width:1024px){.toc-chips{display:none;}}
.toc-chip{flex:0 0 auto;padding:6px 13px;border-radius:999px;background:var(--bg);border:1px solid var(--line);font-size:13px;color:var(--muted);text-decoration:none;transition:all .18s ease-out;}
.toc-chip:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft);}

.rel-list a{display:block;padding:10px 0;font-size:14px;line-height:1.6;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);transition:color .18s ease-out;}
.rel-list a:last-child{border-bottom:none;padding-bottom:0;}
.rel-list a:hover{color:var(--brand);}
.consult-card{background:var(--brand-soft);border:1px solid #D5E2F0;border-radius:var(--radius);padding:20px;}
.consult-card .ct{font-size:16px;font-weight:600;color:var(--brand-dark);margin-bottom:8px;}
.consult-card p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:16px;}

/* ---------- 标签与上下篇 ---------- */
.tag-block{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line);}
.tag-block .lab{font-size:13px;color:var(--faint);}
.tag{display:inline-flex;align-items:center;border-radius:999px;padding:6px 14px;background:var(--brand-soft);color:var(--brand);font-size:13px;text-decoration:none;transition:all .18s ease-out;}
.tag:hover{background:var(--brand);color:#fff;}
.nextprev{display:grid;gap:16px;margin-top:24px;}
@media (min-width:640px){.nextprev{grid-template-columns:1fr 1fr;}}
.nextprev a{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;text-decoration:none;color:var(--ink);transition:all .2s ease-out;}
.nextprev a:hover{border-color:#C9DBF0;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.nextprev .label{font-size:12px;color:var(--faint);display:block;margin-bottom:6px;}
.nextprev .ttl{font-size:15px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.back-group{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}

/* ---------- 内容卡片 ---------- */
.card-grid{display:grid;gap:20px;}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:inherit;box-shadow:var(--shadow-1);transition:all .22s ease-out;}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#C9DBF0;}
.post-card .thumb{aspect-ratio:4/3;background:var(--bg);overflow:hidden;}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.post-card:hover .thumb img{transform:scale(1.03);}
.post-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card .body h3{font-size:18px;line-height:1.45;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .body p{font-size:14px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .time{font-size:13px;color:var(--faint);margin-top:auto;}

/* ---------- CTA 咨询带 ---------- */
.cta-band{background:var(--brand);background-image:linear-gradient(115deg,rgba(224,122,47,.18) 0%,rgba(224,122,47,0) 52%);border-radius:16px;padding:28px;display:grid;gap:28px;color:#fff;}
@media (min-width:768px){.cta-band{padding:40px;}}
@media (min-width:1024px){.cta-band{grid-template-columns:1.1fr 1fr;align-items:center;gap:48px;}}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;margin-bottom:12px;}
.cta-copy p{color:rgba(255,255,255,.82);font-size:15px;line-height:1.8;margin-bottom:18px;}
.cta-points{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.9);}
.cta-points li{display:flex;gap:10px;align-items:flex-start;}
.cta-points li::before{content:"";flex:0 0 16px;width:16px;height:16px;margin-top:4px;border-radius:999px;background:rgba(255,255,255,.16) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><path d='m5 13 4 4 10-10'/></svg>") center/12px no-repeat;}
.cta-form{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-2);}
@media (min-width:768px){.cta-form{padding:26px;}}
.cta-form .form-title{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:16px;}
.field{margin-bottom:12px;}
.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:15px;color:var(--ink);transition:all .2s ease-out;}
.field input{height:48px;padding:0 14px;}
.field textarea{min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(28,78,128,.10);}
.field input.is-error,.field textarea.is-error{border-color:var(--accent);}
.field-err{display:block;min-height:16px;font-size:12px;line-height:1.4;color:var(--accent);margin-top:4px;}
.form-tip{font-size:12px;color:var(--faint);margin-top:10px;line-height:1.6;}
.form-tip.is-ok{color:var(--green);font-weight:600;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:#fff;margin-top:56px;padding:48px 0 0;}
@media (min-width:768px){.site-footer{margin-top:88px;padding:56px 0 0;}}
@media (max-width:767.98px){.site-footer{padding-bottom:calc(76px + env(safe-area-inset-bottom));}}
.footer-grid{display:grid;gap:28px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.site-footer p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.site-footer ul{list-style:none;display:flex;flex-direction:column;gap:8px;font-size:14px;color:rgba(255,255,255,.72);}
.site-footer ul a{color:rgba(255,255,255,.72);text-decoration:none;padding:2px 6px;margin-left:-6px;border-radius:6px;transition:all .18s ease-out;display:inline-block;}
.site-footer ul a:hover{color:#fff;background:rgba(255,255,255,.06);}
.qr-box{width:96px;height:96px;border:1px dashed rgba(255,255,255,.4);border-radius:12px;display:flex;align-items:center;justify-content:center;text-align:center;font-size:12px;line-height:1.5;color:rgba(255,255,255,.6);}
.footer-bottom{margin-top:40px;border-top:1px solid rgba(255,255,255,.14);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);}

:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* roulang page: category1 */
:root{
  --brand:#1C4E80;
  --brand-dark:#123A61;
  --brand-soft:#E8EFF7;
  --accent:#E07A2F;
  --accent-soft:#FDF1E6;
  --teal:#2E8B7A;
  --ink:#17212B;
  --muted:#5A6675;
  --faint:#8B96A5;
  --line:#E6EAF0;
  --bg:#F6F7F9;
  --card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --sh1:0 2px 8px rgba(23,33,43,.06);
  --sh2:0 10px 28px rgba(28,78,128,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  padding-bottom:calc(60px + env(safe-area-inset-bottom));
}
@media(min-width:768px){body{padding-bottom:0}}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font-family:inherit;font-size:inherit;line-height:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container-x{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container-x{padding-left:32px;padding-right:32px}}

/* 顶部工具条 */
.topbar{display:none;background:#F6F7F9;border-bottom:1px solid var(--line)}
@media(min-width:1024px){.topbar{display:block}}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;font-size:13px;color:var(--muted)}
.topbar-left{display:flex;align-items:center;gap:20px}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-right a{color:var(--muted);transition:color .18s ease-out}
.topbar-right a:hover{color:var(--brand)}
.topbar-right .topbar-link{color:var(--brand);font-weight:600}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:28px;height:28px;border-radius:8px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-text{font-size:20px;font-weight:700;color:var(--brand);letter-spacing:.2px}
.nav-links{display:none}
@media(min-width:1024px){.nav-links{display:flex;align-items:center;gap:2px}}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:4px;padding:8px 12px;font-size:15px;color:var(--ink);border-radius:8px;transition:all .18s ease-out;background:transparent}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;background:var(--brand);border-radius:2px}
.nav-drop{position:relative}
.nav-drop-panel{position:absolute;top:calc(100% + 6px);left:0;min-width:212px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh2);padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);transition:all .2s ease-out;z-index:70}
.nav-drop:hover .nav-drop-panel,.nav-drop:focus-within .nav-drop-panel{opacity:1;visibility:visible;transform:translateY(0)}
.nav-drop-panel a{display:block;padding:9px 12px;font-size:14px;color:var(--muted);border-radius:8px;transition:all .18s ease-out}
.nav-drop-panel a:hover{background:var(--brand-soft);color:var(--brand)}
.header-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:var(--r-btn);font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:all .2s ease-out;white-space:nowrap;text-align:center}
.btn-sm{padding:8px 16px;font-size:14px}
.btn-md{padding:12px 24px;font-size:15px}
.btn-lg{padding:14px 30px;font-size:16px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-white{background:#fff;color:var(--brand)}
.btn-white:hover{background:#F2F6FB;color:var(--brand-dark);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#C96A24;color:#fff;transform:translateY(-1px);box-shadow:0 10px 28px rgba(224,122,47,.26)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:4px;color:var(--brand);font-size:14px;font-weight:600}
.link-arrow .arrow{transition:transform .2s ease-out;display:inline-block}
.link-arrow:hover{text-decoration:underline}
.link-arrow:hover .arrow{transform:translateX(2px)}

/* 页头 */
.page-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line)}
.page-hero::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') right center/cover no-repeat}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.94) 42%,rgba(255,255,255,.58) 100%)}
.page-hero .container-x{position:relative;z-index:2;padding-top:44px;padding-bottom:44px}
@media(min-width:768px){.page-hero .container-x{padding-top:72px;padding-bottom:72px}}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--faint);margin-bottom:16px}
.crumb a{color:var(--faint);transition:color .18s ease-out}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C7D0DA}
.crumb .cur{color:var(--muted);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-grid{display:grid;gap:26px}
@media(min-width:1024px){.hero-grid{grid-template-columns:1fr auto;align-items:end;gap:40px}}
.h1{font-size:clamp(28px,4.4vw,44px)!important;line-height:1.25!important;font-weight:700!important;margin:0 0 16px!important;letter-spacing:-.2px}
.h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:16px;line-height:1.85;color:var(--muted);max-width:660px;margin:0!important}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(max-width:520px){.hero-actions .btn{width:100%}}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tagchip{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600}
.tagchip.teal{background:#E4F2EF;color:var(--teal)}

/* 筛选条 */
.chip-bar{position:sticky;top:68px;z-index:40;background:#fff;border-bottom:1px solid var(--line)}
.chip-inner{display:flex;align-items:center;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.chip-inner::-webkit-scrollbar{display:none}
.chip{padding:8px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);font-size:14px;cursor:pointer;white-space:nowrap;transition:all .18s ease-out}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.chip.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.chip.active:hover{color:#fff;background:var(--brand-dark);border-color:var(--brand-dark)}

/* 板块通用 */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:88px 0}}
.section.is-white{background:#fff}
.sec-head{margin-bottom:32px;max-width:760px}
@media(min-width:768px){.sec-head{margin-bottom:44px}}
.sec-bar{width:44px;height:4px;border-radius:2px;background:var(--brand);margin-bottom:16px}
.sec-title{font-size:clamp(22px,2.6vw,30px)!important;line-height:1.3!important;font-weight:700!important;margin:0 0 12px!important}
.sec-desc{color:var(--muted);margin:0!important;font-size:15.5px;line-height:1.85}
.sec-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px}

/* 产品网格 */
.prod-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.prod-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.prod-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh1);display:flex;flex-direction:column;transition:all .22s ease-out}
.prod-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#D6E1EE}
.prod-media{position:relative;aspect-ratio:4/3;background:#EEF1F5;overflow:hidden}
.prod-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.prod-card:hover .prod-media img{transform:scale(1.03)}
.badge-tag{position:absolute;left:12px;top:12px;background:rgba(232,239,247,.95);color:var(--brand);font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px}
.badge-tag.teal{background:rgba(228,242,239,.95);color:var(--teal)}
.badge-tag.accent{background:rgba(253,241,230,.96);color:var(--accent)}
.prod-body{padding:20px;display:flex;flex-direction:column;gap:14px;flex:1}
@media(min-width:768px){.prod-body{padding:22px}}
.prod-title{font-size:18px!important;font-weight:600!important;line-height:1.45!important;margin:0!important}
.spec-list{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.spec-list li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--muted);padding-bottom:8px;border-bottom:1px dashed var(--line)}
.spec-list li b{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}
.prod-foot{margin-top:auto;padding-top:4px}
.prod-cta{background:var(--brand);border-radius:var(--r-card);padding:26px;color:#fff;display:flex;flex-direction:column;justify-content:center;gap:14px;position:relative;overflow:hidden;min-height:260px}
.prod-cta::after{content:"";position:absolute;right:-46px;bottom:-46px;width:170px;height:170px;border-radius:50%;background:rgba(224,122,47,.2)}
.prod-cta .eyebrow{font-size:13px;color:rgba(255,255,255,.7);position:relative;z-index:2}
.prod-cta h3{font-size:20px!important;font-weight:700!important;line-height:1.45!important;margin:0!important;position:relative;z-index:2}
.prod-cta p{font-size:14px;color:rgba(255,255,255,.84);margin:0!important;line-height:1.8;position:relative;z-index:2}
.prod-cta .btn{position:relative;z-index:2;align-self:flex-start}

/* 流程 */
.flow-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.flow-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.flow-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.flow-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh1);transition:all .22s ease-out}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.flow-num{width:40px;height:40px;border-radius:10px;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-variant-numeric:tabular-nums}
.flow-item h3{font-size:17px!important;font-weight:600!important;margin:0 0 8px!important;line-height:1.5!important}
.flow-item p{font-size:14px;color:var(--muted);margin:0!important;line-height:1.8}

/* 数据条 */
.stat-band{background:var(--brand-soft);border-radius:var(--r-card);padding:28px 20px;display:grid;gap:22px;grid-template-columns:repeat(2,1fr)}
@media(min-width:768px){.stat-band{grid-template-columns:repeat(4,1fr);padding:36px 32px;gap:28px}}
.stat-num{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--brand);line-height:1.15;font-variant-numeric:tabular-nums}
.stat-label{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.7}
.promise-grid{display:grid;gap:20px;grid-template-columns:1fr;margin-top:24px}
@media(min-width:768px){.promise-grid{grid-template-columns:repeat(3,1fr)}}
.promise{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh1)}
.promise h3{font-size:17px!important;font-weight:600!important;margin:0 0 10px!important}
.promise p{font-size:14px;color:var(--muted);margin:0!important;line-height:1.8}
.promise .dot{width:10px;height:10px;border-radius:3px;background:var(--teal);margin-bottom:14px}

/* FAQ */
.faq-grid{display:grid;gap:28px}
@media(min-width:1024px){.faq-grid{grid-template-columns:340px 1fr;gap:56px}}
.faq-aside{background:var(--brand-soft);border-radius:var(--r-card);padding:26px;align-self:start}
.faq-aside h3{font-size:18px!important;font-weight:700!important;margin:0 0 10px!important}
.faq-aside p{font-size:14px;color:var(--muted);margin:0 0 18px!important;line-height:1.8}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;transition:color .18s ease-out}
.faq-q:hover{color:var(--brand)}
.faq-icon{flex:0 0 auto;width:22px;height:22px;color:var(--brand);transition:transform .22s ease-out}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease-out}
.faq-a-inner{padding:0 44px 18px 0;font-size:15px;color:var(--muted);line-height:1.8}

/* CTA 通栏 */
.cta-band{background:var(--brand);background-image:linear-gradient(135deg,#1C4E80 0%,#1C4E80 52%,#2A5E92 100%);position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 88% 16%,rgba(224,122,47,.28),transparent 56%)}
.cta-inner{position:relative;z-index:2;display:grid;gap:32px;padding:56px 0}
@media(min-width:1024px){.cta-inner{grid-template-columns:1fr 420px;gap:56px;align-items:center;padding:80px 0}}
.cta-title{color:#fff;font-size:clamp(22px,2.6vw,30px)!important;font-weight:700!important;line-height:1.35!important;margin:0 0 14px!important}
.cta-text{color:rgba(255,255,255,.84);font-size:15.5px;margin:0!important;line-height:1.85}
.cta-points{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:10px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:rgba(255,255,255,.88);line-height:1.75}
.check{width:18px;height:18px;flex:0 0 auto;margin-top:3px;color:var(--accent)}
.form-card{background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:var(--sh2)}
@media(min-width:768px){.form-card{padding:28px}}
.form-card h3{font-size:19px!important;font-weight:700!important;margin:0 0 18px!important}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--muted);margin-bottom:8px}
.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink);padding:0 14px;height:48px;outline:none;transition:all .18s ease-out}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#A8B2BE}
.field input:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(28,78,128,.1)}
.field.error input,.field.error textarea{border-color:var(--accent);box-shadow:0 0 0 4px rgba(224,122,47,.1)}
.err-msg{display:none;font-size:12px;color:var(--accent);margin-top:6px}
.field.error .err-msg{display:block}
.form-card .btn{width:100%}
.form-note{font-size:12px;color:var(--faint);margin-top:12px;line-height:1.7}
.form-ok{display:none;margin-top:14px;padding:12px 14px;border-radius:var(--r-btn);background:#E4F2EF;color:#1F6A5C;font-size:13.5px;line-height:1.7}
.form-ok.show{display:block}

/* 页脚 */
.site-footer{background:var(--brand-dark);color:#fff;padding:56px 0 0}
.footer-grid{display:grid;gap:28px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.45fr 1fr 1fr 1.25fr;gap:40px}}
.site-footer p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.85;margin:0!important}
.footer-title{font-size:15px;font-weight:700;margin-bottom:14px;color:#fff}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.site-footer ul li{font-size:14px;color:rgba(255,255,255,.72);line-height:1.7}
.site-footer ul a{display:inline-block;color:rgba(255,255,255,.72);padding:2px 6px;margin-left:-6px;border-radius:6px;transition:all .18s ease-out}
.site-footer ul a:hover{color:#fff;background:rgba(255,255,255,.06)}
.qr-box{width:96px;height:96px;border-radius:10px;border:1px dashed rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;text-align:center;font-size:12px;color:rgba(255,255,255,.62);line-height:1.6}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:40px;padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.62)}

/* 移动端底部 Tab */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:80;background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 16px rgba(23,33,43,.07);display:grid;grid-template-columns:repeat(5,1fr);padding-bottom:env(safe-area-inset-bottom)}
@media(min-width:768px){.tabbar{display:none}}
.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;height:60px;font-size:11px;color:#8B96A5;transition:color .18s ease-out}
.tab-item svg{width:22px;height:22px}
.tab-item.active{color:var(--brand);font-weight:700}

/* roulang page: category2 */
:root{
    --brand:#1C4E80;
    --brand-dark:#123A61;
    --brand-soft:#E8EFF7;
    --accent:#E07A2F;
    --accent-soft:#FDF1E6;
    --teal:#2E8B7A;
    --ink:#17212B;
    --muted:#5A6675;
    --weak:#8B96A5;
    --line:#E6EAF0;
    --bg:#F6F7F9;
    --card:#FFFFFF;
    --r-card:14px;
    --r-btn:10px;
    --r-img:12px;
    --sh1:0 2px 8px rgba(23,33,43,.06);
    --sh2:0 10px 28px rgba(28,78,128,.12);
    --ease:180ms ease-out;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,textarea,select{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  .num{font-variant-numeric:tabular-nums}
  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media(min-width:768px){.container-x{padding:0 32px}}

  /* ---------- 顶部工具条 ---------- */
  .topbar{display:none;background:#F6F7F9;border-bottom:1px solid var(--line);height:36px;font-size:13px;color:var(--muted)}
  @media(min-width:1024px){.topbar{display:block}}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px}
  .topbar-left{display:flex;align-items:center;gap:20px}
  .topbar-right{display:flex;align-items:center;gap:18px}
  .topbar a{transition:color var(--ease)}
  .topbar a:hover{color:var(--brand)}

  /* ---------- 主导航 ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--ease)}
  .site-header.is-scrolled{box-shadow:var(--sh1)}
  .nav-inner{display:flex;align-items:center;gap:20px;height:68px}
  .logo{display:flex;align-items:center;gap:10px;flex:none}
  .logo-mark{width:28px;height:28px;border-radius:8px;background:var(--brand);display:grid;place-items:center}
  .logo-text{font-size:20px;font-weight:700;color:var(--brand);letter-spacing:.2px}
  .nav-links{display:none;align-items:center;gap:2px;margin-left:auto}
  @media(min-width:1024px){.nav-links{display:flex}}
  .nav-link{position:relative;display:inline-flex;align-items:center;gap:5px;padding:9px 12px;border-radius:8px;font-size:15px;color:var(--ink);transition:all var(--ease)}
  .nav-link:hover{color:var(--brand);background:var(--brand-soft)}
  .nav-link.active{color:var(--brand);font-weight:600}
  .nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;background:var(--brand)}
  .nav-drop{position:relative}
  .nav-drop-panel{position:absolute;top:calc(100% + 8px);left:0;min-width:210px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh2);padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);transition:all var(--ease)}
  .nav-drop:hover .nav-drop-panel,.nav-drop:focus-within .nav-drop-panel{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-drop-panel a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--muted);transition:all var(--ease)}
  .nav-drop-panel a:hover{background:var(--brand-soft);color:var(--brand)}
  .header-cta{margin-left:auto}
  @media(min-width:1024px){.header-cta{margin-left:8px}}

  /* ---------- 按钮 ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:all 200ms ease-out;white-space:nowrap}
  .btn-primary{background:var(--brand);color:#fff}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh2)}
  .btn-primary:active{transform:translateY(0);box-shadow:none}
  .btn-accent{background:var(--accent);color:#fff}
  .btn-accent:hover{filter:brightness(.94);transform:translateY(-1px);box-shadow:var(--sh2)}
  .btn-outline{background:#fff;border-color:var(--brand);color:var(--brand)}
  .btn-outline:hover{background:var(--brand-soft)}
  .btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
  .btn-ghost:hover{background:rgba(255,255,255,.14)}
  .btn-sm{height:38px;padding:0 16px;font-size:14px}
  .btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,.chip:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
  .link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
  .link-more svg{transition:transform var(--ease)}
  .link-more:hover{text-decoration:underline}
  .link-more:hover svg{transform:translateX(2px)}

  /* ---------- 通用区块 ---------- */
  .section{padding:56px 0}
  @media(min-width:768px){.section{padding:88px 0}}
  .bg-white{background:#fff}
  .bg-soft{background:var(--bg)}
  .sec-head{max-width:760px;margin-bottom:32px}
  @media(min-width:768px){.sec-head{margin-bottom:48px}}
  .sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-soft);padding:5px 12px;border-radius:999px;margin-bottom:16px}
  .h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.2px}
  .h2-bar{display:inline-block;width:4px;height:22px;border-radius:2px;background:var(--brand);margin-right:12px;vertical-align:-3px}
  .sec-desc{margin-top:14px;color:var(--muted);font-size:16px}

  /* ---------- 页头 ---------- */
  .page-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line)}
  .page-hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(28,78,128,.16) 1px,transparent 1px);background-size:22px 22px;opacity:.35;pointer-events:none}
  .page-hero::after{content:"";position:absolute;right:-80px;top:-60px;width:320px;height:320px;border-radius:50%;background:var(--brand-soft);opacity:.6;pointer-events:none}
  .page-hero-inner{position:relative;z-index:1;display:grid;gap:28px;padding:36px 0 48px}
  @media(min-width:1024px){.page-hero-inner{grid-template-columns:1fr auto;align-items:end;padding:52px 0 64px;gap:48px}}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak);margin-bottom:18px}
  .crumb a{transition:color var(--ease)}
  .crumb a:hover{color:var(--brand)}
  .crumb span.sep{color:var(--line)}
  .page-title{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.5px}
  .page-title em{font-style:normal;color:var(--brand)}
  .page-sub{margin-top:16px;font-size:16px;color:var(--muted);max-width:660px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ---------- 徽章 / 标签 ---------- */
  .chip{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--muted);transition:all var(--ease)}
  .chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
  .chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
  .badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;padding:5px 12px;border-radius:999px}
  .badge-brand{background:var(--brand-soft);color:var(--brand)}
  .badge-accent{background:var(--accent-soft);color:#B85F1C}
  .badge-teal{background:rgba(46,139,122,.12);color:var(--teal)}

  /* ---------- 痛点三枚 ---------- */
  .pain-band{background:#fff;border-bottom:1px solid var(--line);padding:40px 0}
  @media(min-width:768px){.pain-band{padding:52px 0}}
  .pain-head{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.4}
  .pain-grid{display:grid;gap:14px;margin-top:24px}
  @media(min-width:768px){.pain-grid{grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}}
  .pain-item{display:flex;align-items:flex-start;gap:12px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px;transition:all var(--ease)}
  .pain-item:hover{background:#fff;box-shadow:var(--sh2);transform:translateY(-2px)}
  .pain-dot{flex:none;width:26px;height:26px;border-radius:8px;background:var(--brand-soft);display:grid;place-items:center;margin-top:2px}
  .pain-item h3{font-size:16px;font-weight:600;line-height:1.45}
  .pain-item p{font-size:14px;color:var(--muted);margin-top:4px;line-height:1.7}

  /* ---------- Z 字图文 ---------- */
  .zrow{display:grid;gap:28px;align-items:center}
  @media(min-width:1024px){.zrow{grid-template-columns:1fr 1fr;gap:64px}}
  .zrow+.zrow{margin-top:56px}
  @media(min-width:768px){.zrow+.zrow{margin-top:88px}}
  @media(min-width:1024px){
    .zrow.rev .z-media{order:2}
    .zrow.rev .z-body{order:1}
  }
  .z-media{position:relative}
  .z-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;box-shadow:var(--sh2)}
  .z-media .z-tag{position:absolute;left:16px;bottom:16px;background:rgba(255,255,255,.94);border:1px solid var(--line);color:var(--brand);font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;backdrop-filter:blur(2px)}
  .z-num{font-size:clamp(34px,4vw,46px);font-weight:700;color:var(--accent);line-height:1;letter-spacing:-1px}
  .z-body h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.32;margin-top:14px}
  .z-body p{margin-top:14px;color:var(--muted);font-size:16px}
  .tick-list{margin-top:18px;display:grid;gap:10px}
  .tick-list li{display:flex;gap:10px;font-size:15px;color:var(--ink)}
  .tick-list .tk{flex:none;width:20px;height:20px;border-radius:6px;background:rgba(46,139,122,.12);display:grid;place-items:center;margin-top:6px}
  .z-body .btn{margin-top:24px}

  /* ---------- 流程条 ---------- */
  .flow-grid{display:grid;gap:18px}
  @media(min-width:768px){.flow-grid{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.flow-grid{grid-template-columns:repeat(4,1fr)}}
  .flow-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh1);transition:all 220ms ease-out}
  .flow-card:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
  .flow-card .step{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:26px;padding:0 10px;border-radius:8px;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:13px}
  .flow-card h3{font-size:18px;font-weight:600;margin-top:16px;line-height:1.45}
  .flow-card p{font-size:14px;color:var(--muted);margin-top:8px}
  .flow-card .days{margin-top:16px;font-size:13px;color:var(--weak)}

  /* ---------- 表格 ---------- */
  .table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1)}
  table{width:100%;border-collapse:collapse;min-width:720px}
  thead th{background:var(--brand-soft);color:var(--brand);font-size:14px;font-weight:600;text-align:left;padding:15px 18px;white-space:nowrap}
  tbody td{padding:15px 18px;font-size:14px;color:var(--muted);border-top:1px solid var(--line);vertical-align:top}
  tbody td strong{color:var(--ink);font-weight:600}
  tbody tr:nth-child(even){background:var(--bg)}

  /* ---------- 动态条 ---------- */
  .news-list{border-top:1px solid var(--line)}
  .news-row{display:grid;gap:6px;padding:18px 0;border-bottom:1px solid var(--line);transition:background var(--ease)}
  .news-row:hover{background:rgba(232,239,247,.5)}
  @media(min-width:768px){.news-row{grid-template-columns:120px 1fr 100px;align-items:center;gap:20px}}
  .news-date{font-size:13px;color:var(--weak)}
  .news-row h3{font-size:15px;font-weight:600}
  .news-row .news-note{font-size:13px;color:var(--weak)}

  /* ---------- FAQ ---------- */
  .faq-wrap{display:grid;gap:32px}
  @media(min-width:1024px){.faq-wrap{grid-template-columns:.85fr 1.15fr;gap:56px}}
  .faq-aside{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh1);align-self:start}
  .faq-aside h3{font-size:18px;font-weight:600}
  .faq-aside p{font-size:14px;color:var(--muted);margin-top:10px}
  .faq-aside .btn{margin-top:18px}
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;background:none;border:0;padding:20px 0;font-size:16px;font-weight:600;text-align:left;cursor:pointer;transition:color var(--ease)}
  .faq-q:hover{color:var(--brand)}
  .faq-ico{flex:none;position:relative;width:22px;height:22px;border-radius:50%;background:var(--brand-soft);transition:transform 220ms ease-out,background var(--ease)}
  .faq-ico::before,.faq-ico::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;transform:translate(-50%,-50%)}
  .faq-ico::before{width:10px;height:2px}
  .faq-ico::after{width:2px;height:10px;transition:opacity var(--ease)}
  .faq-item.open .faq-ico{transform:rotate(180deg);background:var(--brand)}
  .faq-item.open .faq-ico::before{background:#fff}
  .faq-item.open .faq-ico::after{opacity:0}
  .faq-panel{max-height:0;overflow:hidden;transition:max-height 280ms ease-out}
  .faq-panel p{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--muted)}

  /* ---------- CTA ---------- */
  .cta-band{background:var(--brand);background-image:linear-gradient(115deg,rgba(224,122,47,.22) 0%,rgba(224,122,47,0) 52%);color:#fff}
  .cta-inner{display:grid;gap:32px;padding:56px 0}
  @media(min-width:1024px){.cta-inner{grid-template-columns:1fr 400px;gap:64px;align-items:center;padding:72px 0}}
  .cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.32}
  .cta-band .cta-sub{margin-top:14px;color:rgba(255,255,255,.82);font-size:16px;max-width:560px}
  .cta-ticks{margin-top:22px;display:grid;gap:10px}
  .cta-ticks li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.92)}
  .cta-ticks .tk{flex:none;width:20px;height:20px;border-radius:6px;background:rgba(255,255,255,.16);display:grid;place-items:center;margin-top:5px}
  .form-card{background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:0 18px 40px rgba(0,0,0,.16)}
  @media(min-width:768px){.form-card{padding:28px}}
  .form-card h3{font-size:18px;font-weight:600;color:var(--ink)}
  .form-card .form-tip{font-size:13px;color:var(--weak);margin-top:6px}
  .field{margin-top:16px}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px}
  .field input,.field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink);transition:all var(--ease)}
  .field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
  .field input::placeholder,.field textarea::placeholder{color:var(--weak)}
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(28,78,128,.1)}
  .field.has-error input,.field.has-error textarea{border-color:var(--accent);box-shadow:0 0 0 4px rgba(224,122,47,.1)}
  .field .err{display:none;font-size:12px;color:#C9641C;margin-top:6px}
  .field.has-error .err{display:block}
  .form-card .btn{width:100%;margin-top:20px}
  .form-terms{font-size:12px;color:var(--weak);margin-top:12px;line-height:1.7}
  .form-ok{display:none;margin-top:14px;font-size:13px;color:var(--teal);font-weight:600}
  .form-ok.show{display:block}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--brand-dark);color:#fff;padding-top:56px}
  .footer-grid{display:grid;gap:28px;padding-bottom:40px}
  @media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
  .site-footer p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.85}
  .footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
  .site-footer ul{display:grid;gap:10px}
  .site-footer ul li{font-size:14px;color:rgba(255,255,255,.72)}
  .site-footer ul li a{color:rgba(255,255,255,.72);display:inline-block;padding:2px 6px;margin-left:-6px;border-radius:6px;transition:all var(--ease)}
  .site-footer ul li a:hover{color:#fff;background:rgba(255,255,255,.06)}
  .qr-box{width:96px;height:96px;border-radius:12px;border:1px dashed rgba(255,255,255,.35);display:grid;place-items:center;text-align:center;font-size:12px;color:rgba(255,255,255,.6);line-height:1.6}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;padding-bottom:24px;display:flex;flex-direction:column;gap:8px;font-size:13px;color:rgba(255,255,255,.6)}
  @media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

  /* ---------- 移动端底部 Tab ---------- */
  .tabbar{display:none}
  @media(max-width:767px){
    body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
    .tabbar{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 18px rgba(23,33,43,.08);padding-bottom:env(safe-area-inset-bottom)}
    .tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:60px;font-size:11px;color:#8B96A5;transition:color var(--ease)}
    .tab-item svg{width:22px;height:22px}
    .tab-item.active{color:var(--brand);font-weight:700}
  }

  @media(prefers-reduced-motion:reduce){
    *{transition:none!important;animation:none!important}
  }

/* roulang page: category3 */
:root{
  --brand:#1C4E80;
  --brand-dark:#123A61;
  --brand-soft:#E8EFF7;
  --accent:#E07A2F;
  --accent-soft:#FDF1E6;
  --teal:#2E8B7A;
  --ink:#17212B;
  --muted:#5A6675;
  --weak:#8B96A5;
  --line:#E6EAF0;
  --bg:#F6F7F9;
  --card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh1:0 2px 8px rgba(23,33,43,.06);
  --sh2:0 10px 28px rgba(28,78,128,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.container-x{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container-x{padding:0 32px}}
@media (max-width:767px){
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
}
.num{font-variant-numeric:tabular-nums}

/* 顶部工具条 */
.topbar{display:none;height:36px;background:#F6F7F9;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
@media (min-width:1024px){.topbar{display:block}}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;gap:20px}
.topbar-left{display:flex;align-items:center;gap:22px;white-space:nowrap}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar a{color:var(--muted);transition:color .18s ease-out}
.topbar a:hover{color:var(--brand)}
.lang-split span{color:var(--weak)}
.lang-split b{color:var(--brand);font-weight:600}

/* 导航 */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:28px;height:28px;border-radius:8px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:0 0 28px}
.logo-text{font-size:20px;font-weight:700;color:var(--brand);letter-spacing:.2px}
.nav-links{display:none}
@media (min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:4px;margin:0 auto}
}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:4px;padding:8px 13px;border-radius:8px;font-size:15px;color:var(--ink);transition:color .18s ease-out,background-color .18s ease-out;white-space:nowrap}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;border-radius:2px;background:var(--brand)}
.nav-drop{position:relative}
.nav-drop-panel{position:absolute;top:calc(100% + 6px);left:0;min-width:190px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh2);padding:8px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:all .2s ease-out}
.nav-drop:hover .nav-drop-panel,.nav-drop:focus-within .nav-drop-panel{opacity:1;visibility:visible;transform:translateY(0)}
.nav-drop-panel a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--muted)}
.nav-drop-panel a:hover{background:var(--brand-soft);color:var(--brand)}
.header-cta{flex:0 0 auto}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-btn);border:1.5px solid transparent;font-size:15px;font-weight:600;line-height:1;cursor:pointer;transition:all .18s ease-out;text-align:center}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-soft)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-lg{padding:14px 28px;font-size:16px}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px}
.link-arrow svg{transition:transform .18s ease-out}
.link-arrow:hover{text-decoration:underline}
.link-arrow:hover svg{transform:translateX(2px)}

/* 内页页头 */
.page-hero{position:relative;border-bottom:1px solid var(--line);background-color:#F6F7F9;background-image:linear-gradient(180deg,rgba(246,247,249,.93),rgba(246,247,249,.985)),url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;padding:36px 0 44px}
@media (min-width:768px){.page-hero{padding:48px 0 56px}}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--weak);flex-wrap:wrap;margin-bottom:20px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--weak)}
.crumb .current{color:var(--ink)}
.hero-flex{display:flex;flex-direction:column;gap:26px}
@media (min-width:1024px){.hero-flex{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:40px}}
h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.2px;max-width:760px}
h1 .hl{color:var(--brand)}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.85;color:var(--muted);max-width:680px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hero-side{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* 通用区块 */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:88px 0}}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-direction:column;gap:14px;margin-bottom:32px}
@media (min-width:768px){.section-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700}
.section-lead{font-size:15px;color:var(--muted);max-width:620px;margin-top:10px}
.eyebrow{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;margin-bottom:14px}
.eyebrow-teal{background:rgba(46,139,122,.1);color:var(--teal)}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media (min-width:768px){.stats{grid-template-columns:repeat(4,1fr);gap:20px}}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);padding:22px 20px;transition:box-shadow .2s ease-out,transform .2s ease-out}
.stat-card:hover{box-shadow:var(--sh2);transform:translateY(-2px)}
.stat-num{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-num small{font-size:15px;font-weight:600;margin-left:2px}
.stat-label{margin-top:8px;font-size:13px;color:var(--muted)}
.stat-bar{height:4px;border-radius:999px;background:var(--brand-soft);margin-top:14px;overflow:hidden}
.stat-bar i{display:block;height:100%;border-radius:999px;background:var(--teal);opacity:.75}

/* 案例图墙 */
.case-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.case-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.case-grid{grid-template-columns:repeat(3,1fr)}}
.case-card{position:relative;display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh1);transition:box-shadow .22s ease-out,transform .22s ease-out}
.case-card:hover{box-shadow:var(--sh2);transform:translateY(-4px)}
.case-media{position:relative;overflow:hidden;background:#EDF0F4;aspect-ratio:4/3}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.case-card:hover .case-media img{transform:scale(1.03)}
@media (min-width:1024px){
  .case-card:nth-child(3n+2) .case-media{aspect-ratio:1/1}
  .case-card:nth-child(3n+3) .case-media{aspect-ratio:4/5}
}
.case-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,58,97,0) 42%,rgba(18,58,97,.72) 100%)}
.case-tag{position:absolute;left:14px;top:14px;z-index:2;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(253,241,230,.94);color:var(--brand);border:1px solid rgba(224,122,47,.35)}
.case-name{position:absolute;left:16px;right:16px;bottom:14px;z-index:2;color:#fff;font-size:16px;font-weight:600;line-height:1.45}
.case-body{padding:16px 18px 18px}
.case-body p{font-size:14px;color:var(--muted);line-height:1.7}
.case-meta{display:flex;align-items:center;gap:14px;margin-top:12px;font-size:13px;color:var(--weak)}

/* 交付节奏 */
.flow-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:768px){.flow-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.flow-grid{grid-template-columns:repeat(4,1fr)}}
.flow-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px 22px;box-shadow:var(--sh1);transition:box-shadow .2s ease-out,transform .2s ease-out}
.flow-card:hover{box-shadow:var(--sh2);transform:translateY(-3px)}
.flow-index{font-size:22px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.5px}
.flow-card h3{font-size:18px;font-weight:600;line-height:1.45;margin-top:10px}
.flow-card p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75}
.flow-line{height:2px;background:var(--brand-soft);border-radius:999px;margin-top:18px;position:relative;overflow:hidden}
.flow-line i{position:absolute;left:0;top:0;bottom:0;width:38%;background:var(--brand);border-radius:999px;opacity:.7}

/* 客户墙 */
.logo-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (min-width:768px){.logo-wall{grid-template-columns:repeat(6,1fr);gap:16px}}
.logo-item{height:70px;display:flex;align-items:center;justify-content:center;background:#fff;border:1px solid var(--line);border-radius:12px;font-size:14px;font-weight:700;color:var(--brand);letter-spacing:.5px;opacity:.45;filter:grayscale(1);transition:all .22s ease-out;text-align:center;padding:0 8px}
.logo-item:hover{opacity:1;filter:none;border-color:var(--brand);box-shadow:var(--sh1)}

/* 评价 */
.quote-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:768px){.quote-grid{grid-template-columns:repeat(3,1fr)}}
.quote-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px 22px;box-shadow:var(--sh1);display:flex;flex-direction:column;gap:16px}
.quote-card p{font-size:15px;line-height:1.8;color:var(--ink)}
.quote-person{display:flex;align-items:center;gap:12px;margin-top:auto}
.quote-avatar{width:40px;height:40px;border-radius:999px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex:0 0 40px}
.quote-person strong{display:block;font-size:14px;font-weight:600}
.quote-person span{font-size:13px;color:var(--weak)}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:1024px){.faq-wrap{grid-template-columns:0.85fr 1.6fr;gap:56px;align-items:start}}
.faq-aside{background:var(--brand-soft);border-radius:var(--r-card);padding:26px 24px}
.faq-aside h3{font-size:18px;font-weight:600}
.faq-aside p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75}
.faq-aside .btn{margin-top:18px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 4px;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;transition:color .18s ease-out}
.faq-q:hover{color:var(--brand)}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .26s ease-out}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.open .faq-icon::after{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out}
.faq-item.open .faq-a{max-height:340px}
.faq-a p{padding:0 40px 22px 4px;font-size:15px;line-height:1.8;color:var(--muted)}

/* CTA */
.cta-band{background:var(--brand);background-image:linear-gradient(115deg,#1C4E80 0%,#1C4E80 58%,#2A5F91 100%);color:#fff;border-radius:0;padding:56px 0}
@media (min-width:768px){.cta-band{padding:72px 0}}
.cta-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media (min-width:1024px){.cta-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
.cta-band h2{color:#fff}
.cta-band .cta-lead{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.82);max-width:520px}
.cta-points{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:22px}
.cta-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.92)}
.cta-points svg{flex:0 0 18px}
.form-card{background:#fff;border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh2);color:var(--ink)}
.form-card h3{font-size:18px;font-weight:600}
.form-card .form-tip{margin-top:8px;font-size:13px;color:var(--weak)}
.field{margin-top:16px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;border:1.5px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink);font-size:15px;transition:border-color .18s ease-out,box-shadow .18s ease-out}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(28,78,128,.1)}
.form-card .btn{margin-top:20px}
.form-terms{margin-top:12px;font-size:12px;color:var(--weak);line-height:1.7}
.form-status{margin-top:12px;font-size:13px;color:var(--teal);display:none}
.form-status.show{display:block}

/* 页脚 */
.site-footer{background:var(--brand-dark);color:#fff;padding:48px 0 0;margin-top:0}
@media (min-width:768px){.site-footer{padding-top:64px}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;padding-bottom:40px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:320px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.site-footer ul li{font-size:14px;color:rgba(255,255,255,.72);line-height:2}
.site-footer ul li a{color:rgba(255,255,255,.72);border-radius:6px;transition:color .18s ease-out,background-color .18s ease-out;padding:2px 4px;margin-left:-4px}
.site-footer ul li a:hover{color:#fff;background:rgba(255,255,255,.06)}
.qr-box{width:96px;height:96px;border-radius:12px;background:rgba(255,255,255,.08);border:1px dashed rgba(255,255,255,.28);color:rgba(255,255,255,.72);font-size:12px;line-height:1.5;display:flex;align-items:center;justify-content:center;text-align:center;padding:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:18px 0 24px;display:flex;flex-direction:column;gap:8px;font-size:13px;color:rgba(255,255,255,.62)}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

/* 移动端底部 Tab */
.mobile-tabbar{position:fixed;left:0;right:0;bottom:0;z-index:60;display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 18px rgba(23,33,43,.06);padding-bottom:env(safe-area-inset-bottom)}
@media (min-width:768px){.mobile-tabbar{display:none}}
.tab-item{height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--weak);transition:color .18s ease-out}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.tab-item.active{color:var(--brand);font-weight:700}

/* roulang page: category4 */
:root{
    --brand:#1C4E80;
    --brand-dark:#123A61;
    --brand-soft:#E8EFF7;
    --accent:#E07A2F;
    --accent-soft:#FDF1E6;
    --mint:#2E8B7A;
    --ink:#17212B;
    --muted:#5A6675;
    --weak:#8B96A5;
    --line:#E6EAF0;
    --bg:#F6F7F9;
    --radius-card:14px;
    --radius-btn:10px;
    --shadow-1:0 2px 8px rgba(23,33,43,.06);
    --shadow-2:0 10px 28px rgba(28,78,128,.12);
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--bg);
    padding-bottom:calc(60px + env(safe-area-inset-bottom));
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,textarea,select{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}

  .container-x{max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){ .container-x{padding:0 32px;} }

  /* ---------- 顶部工具条 ---------- */
  .topbar{display:none;height:36px;background:#F6F7F9;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted);}
  .topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
  .topbar-left,.topbar-right{display:flex;align-items:center;gap:12px;white-space:nowrap;}
  .topbar .dot{width:3px;height:3px;border-radius:50%;background:var(--weak);display:inline-block;}
  .topbar a{color:var(--muted);transition:color .18s var(--ease);}
  .topbar a:hover{color:var(--brand);}
  .topbar .sep{color:#C9D2DC;}
  .topbar-cta{color:var(--brand);font-weight:600;}
  @media (min-width:1024px){ .topbar{display:block;} }

  /* ---------- 主导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);
    transition:box-shadow .22s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:var(--shadow-1);}
  .nav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
  .logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
  .logo-mark{width:28px;height:28px;border-radius:8px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:0 0 28px;}
  .logo-text{font-size:20px;font-weight:700;color:var(--brand);letter-spacing:.2px;}

  .nav-links{display:none;align-items:center;gap:4px;}
  @media (min-width:768px){ .nav-links{display:flex;} }
  .nav-link{
    display:inline-flex;align-items:center;gap:4px;padding:8px 12px;border-radius:8px;
    font-size:15px;color:var(--ink);transition:color .18s var(--ease),background-color .18s var(--ease);
  }
  .nav-link:hover{color:var(--brand);background:var(--brand-soft);}
  .nav-link.active{color:var(--brand);font-weight:600;position:relative;}
  .nav-link.active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
  }
  .nav-drop{position:relative;}
  .nav-drop-panel{
    position:absolute;top:calc(100% + 10px);left:0;min-width:206px;background:#fff;border:1px solid var(--line);
    border-radius:14px;box-shadow:var(--shadow-2);padding:8px;opacity:0;visibility:hidden;transform:translateY(-6px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  }
  .nav-drop:hover .nav-drop-panel,.nav-drop:focus-within .nav-drop-panel{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-drop-panel a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--muted);transition:.18s var(--ease);}
  .nav-drop-panel a:hover{background:var(--brand-soft);color:var(--brand);}
  .header-cta{display:none;}
  @media (min-width:768px){ .header-cta{display:flex;align-items:center;} }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);
    border:1.5px solid transparent;padding:12px 22px;font-size:15px;font-weight:600;cursor:pointer;
    transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
    white-space:nowrap;
  }
  .btn-sm{padding:9px 16px;font-size:14px;}
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2);}
  .btn-primary:active{transform:none;box-shadow:none;}
  .btn-accent{background:var(--accent);color:#fff;}
  .btn-accent:hover{background:#c9681f;transform:translateY(-1px);box-shadow:var(--shadow-2);}
  .btn-outline{background:#fff;border-color:var(--brand);color:var(--brand);}
  .btn-outline:hover{background:var(--brand-soft);transform:translateY(-1px);}
  .btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
  .btn-ghost-light:hover{background:rgba(255,255,255,.12);}
  .btn:focus-visible,.nav-link:focus-visible,.tab-item:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;}
  .link-arrow{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
  .link-arrow svg{transition:transform .2s var(--ease);}
  .link-arrow:hover{text-decoration:underline;}
  .link-arrow:hover svg{transform:translateX(2px);}

  /* ---------- 通用板块 ---------- */
  .section{padding:56px 0;}
  @media (min-width:768px){ .section{padding:88px 0;} }
  .section-alt{background:#fff;}
  .sec-head{display:flex;flex-direction:column;gap:10px;margin-bottom:32px;}
  @media (min-width:768px){ .sec-head{flex-direction:row;align-items:flex-end;justify-content:space-between;} }
  .sec-title{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;position:relative;padding-left:14px;}
  .sec-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand);}
  .sec-sub{font-size:14px;color:var(--muted);}
  h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;}
  h3{font-size:18px;line-height:1.45;font-weight:600;}

  .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);}

  .chip{
    display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;
    font-size:13px;color:var(--muted);background:#fff;border:1px solid var(--line);
    transition:.18s var(--ease);cursor:pointer;
  }
  .chip:hover{border-color:var(--brand);color:var(--brand);}
  .chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
    font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand);
  }
  .badge-mint{background:rgba(46,139,122,.12);color:var(--mint);}
  .badge-accent{background:var(--accent-soft);color:var(--accent);}

  /* ---------- 页头 ---------- */
  .page-head{
    position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line);
    padding:36px 0 48px;
  }
  .page-head::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center right;opacity:.07;
  }
  .page-head-inner{position:relative;display:grid;gap:28px;}
  @media (min-width:1024px){ .page-head-inner{grid-template-columns:1.5fr .9fr;align-items:center;gap:44px;} }
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--weak);margin-bottom:16px;flex-wrap:wrap;}
  .crumb a{color:var(--weak);}
  .crumb a:hover{color:var(--brand);}
  .crumb .now{color:var(--muted);}
  .page-head h1{margin-bottom:14px;}
  .page-head h1 em{font-style:normal;color:var(--brand);}
  .lead{font-size:16px;color:var(--muted);max-width:640px;}
  .head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
  .head-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .head-visual{position:relative;}
  .head-visual img{border-radius:16px;box-shadow:var(--shadow-2);aspect-ratio:4/3;object-fit:cover;width:100%;}

  /* ---------- 数据条 ---------- */
  .stat-strip{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);}
  @media (min-width:768px){ .stat-grid{grid-template-columns:repeat(4,1fr);} }
  .stat-cell{background:#fff;padding:24px 20px;text-align:center;}
  .stat-num{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--brand);line-height:1.15;font-variant-numeric:tabular-nums;}
  .stat-num span{font-size:15px;font-weight:600;margin-left:2px;}
  .stat-label{font-size:13px;color:var(--weak);margin-top:6px;}

  /* ---------- 服务支持主体 ---------- */
  .support-layout{display:grid;gap:28px;}
  @media (min-width:1024px){
    .support-layout{grid-template-columns:300px minmax(0,1fr);gap:40px;align-items:start;}
    .support-aside{position:sticky;top:88px;}
  }
  .side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);}
  .side-card + .side-card{margin-top:16px;}
  .side-title{font-size:14px;font-weight:700;color:var(--brand);display:flex;align-items:center;gap:8px;margin-bottom:12px;}
  .side-title::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);}
  .side-list li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px;}
  .side-list li:last-child{border-bottom:none;}
  .side-list .k{color:var(--muted);}
  .side-list .v{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums;text-align:right;}
  .side-note{font-size:13px;color:var(--weak);line-height:1.7;margin-top:10px;}

  @media (max-width:767px){
    .support-aside{display:flex;gap:12px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
    .support-aside .side-card{flex:0 0 250px;margin-top:0;}
    .support-aside::-webkit-scrollbar{height:4px;}
    .support-aside::-webkit-scrollbar-thumb{background:#D6DDE6;border-radius:4px;}
  }

  /* ---------- 手风琴 ---------- */
  .acc{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-1);overflow:hidden;}
  .acc-item + .acc-item{border-top:1px solid var(--line);}
  .acc-head{
    width:100%;background:transparent;border:0;cursor:pointer;text-align:left;
    display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;
    font-size:16px;font-weight:600;color:var(--ink);transition:background-color .18s var(--ease);
  }
  .acc-head:hover{background:var(--brand-soft);}
  .acc-icon{position:relative;width:22px;height:22px;flex:0 0 22px;border-radius:999px;background:var(--brand-soft);transition:transform .22s var(--ease),background-color .22s var(--ease);}
  .acc-icon::before,.acc-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:opacity .2s var(--ease),background-color .2s var(--ease);}
  .acc-icon::before{left:6px;right:6px;top:10.25px;height:1.5px;}
  .acc-icon::after{top:6px;bottom:6px;left:10.25px;width:1.5px;}
  .acc-item.open .acc-icon{transform:rotate(180deg);background:var(--brand);}
  .acc-item.open .acc-icon::before,.acc-item.open .acc-icon::after{background:#fff;}
  .acc-item.open .acc-icon::after{opacity:0;}
  .acc-body{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
  .acc-body p{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--muted);}

  /* ---------- 表单 ---------- */
  .form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:24px;}
  @media (min-width:768px){ .form-card{padding:28px;} }
  .field{margin-bottom:16px;}
  .field label{display:block;font-size:14px;color:var(--muted);margin-bottom:8px;}
  .field input,.field textarea{
    width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:#fff;
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .field textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.7;}
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(28,78,128,.10);}
  .field.has-error input,.field.has-error textarea{border-color:var(--accent);}
  .field .err{display:none;font-size:12px;color:var(--accent);margin-top:6px;}
  .field.has-error .err{display:block;}
  .form-tip{font-size:12px;color:var(--weak);margin-top:12px;line-height:1.7;}
  .form-ok{display:none;margin-top:14px;font-size:14px;color:var(--mint);background:rgba(46,139,122,.10);border-radius:10px;padding:12px 14px;}
  .form-ok.show{display:block;}

  /* ---------- 服务时间说明卡 ---------- */
  .hours-card{display:grid;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);}
  @media (min-width:768px){ .hours-card{grid-template-columns:1fr 1fr;} }
  .hours-card img{width:100%;height:100%;min-height:220px;object-fit:cover;}
  .hours-body{padding:26px;}
  .hours-body h3{margin-bottom:10px;}
  .hours-body p{font-size:14px;color:var(--muted);}
  .hours-table{margin-top:16px;}
  .hours-table li{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:9px 0;border-bottom:1px dashed var(--line);}
  .hours-table li:last-child{border-bottom:none;}
  .hours-table .v{font-weight:600;font-variant-numeric:tabular-nums;}

  /* ---------- 流程 ---------- */
  .step-grid{display:grid;gap:18px;}
  @media (min-width:640px){ .step-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .step-grid{grid-template-columns:repeat(4,1fr);} }
  .step-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
  .step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
  .step-num{font-size:24px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.5px;}
  .step-card h3{margin:12px 0 8px;}
  .step-card p{font-size:14px;color:var(--muted);line-height:1.8;}

  /* ---------- CTA 通栏 ---------- */
  .cta-band{
    background-color:var(--brand);
    background-image:linear-gradient(112deg,rgba(224,122,47,.22) 0%,rgba(28,78,128,0) 58%);
    color:#fff;
  }
  .cta-inner{display:grid;gap:28px;padding:56px 0;}
  @media (min-width:1024px){ .cta-inner{grid-template-columns:1.35fr .8fr;align-items:center;padding:64px 0;gap:48px;} }
  .cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;}
  .cta-inner .cta-sub{color:rgba(255,255,255,.82);margin-top:12px;font-size:15px;max-width:620px;}
  .cta-checks{display:grid;gap:10px;margin-top:22px;}
  @media (min-width:640px){ .cta-checks{grid-template-columns:repeat(2,1fr);} }
  .cta-checks li{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:rgba(255,255,255,.9);}
  .cta-checks svg{flex:0 0 18px;margin-top:4px;}
  .cta-actions{display:grid;gap:14px;}
  @media (max-width:767px){ .cta-actions .btn{width:100%;} }

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--brand-dark);color:#fff;padding:56px 0 0;margin-top:0;}
  .footer-grid{display:grid;gap:28px;}
  @media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.25fr .8fr .8fr 1fr;gap:40px;} }
  .site-footer p{font-size:14px;color:rgba(255,255,255,.72);line-height:1.85;}
  .footer-title{font-size:15px;font-weight:700;margin-bottom:14px;color:#fff;}
  .site-footer ul li{font-size:14px;color:rgba(255,255,255,.72);padding:5px 0;}
  .site-footer ul li a{color:rgba(255,255,255,.72);display:inline-block;padding:2px 6px;margin-left:-6px;border-radius:6px;transition:.18s var(--ease);}
  .site-footer ul li a:hover{color:#fff;background:rgba(255,255,255,.06);}
  .qr-box{
    width:96px;height:96px;border-radius:12px;border:1px dashed rgba(255,255,255,.35);
    display:flex;align-items:center;justify-content:center;text-align:center;
    font-size:12px;color:rgba(255,255,255,.65);line-height:1.5;
  }
  .footer-bottom{
    margin-top:40px;border-top:1px solid rgba(255,255,255,.14);
    display:flex;flex-direction:column;gap:8px;padding-top:20px;padding-bottom:24px;
    font-size:13px;color:rgba(255,255,255,.6);
  }
  @media (min-width:768px){ .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;} }

  /* ---------- 移动端底部 Tab ---------- */
  .mobile-tabbar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;
    background:#fff;border-top:1px solid var(--line);
    box-shadow:0 -6px 18px rgba(23,33,43,.08);
    padding-bottom:env(safe-area-inset-bottom);
    height:calc(60px + env(safe-area-inset-bottom));
  }
  .tab-item{
    flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    font-size:11px;color:var(--weak);transition:color .18s var(--ease);
  }
  .tab-item.active{color:var(--brand);font-weight:700;}
  @media (min-width:768px){ .mobile-tabbar{display:none;} body{padding-bottom:0;} }

  .anchor-offset{scroll-margin-top:96px;}