/* roulang page: index */
:root{
  --brand:#16224D;
  --brand-2:#2A3C7A;
  --brand-hover:#22336B;
  --brand-soft:#EEF1F9;
  --amber:#E8B45A;
  --cyan:#3E8FB0;
  --ink:#101827;
  --ink-2:#4A5568;
  --ink-3:#8A93A6;
  --bg:#F6F8FC;
  --bg-alt:#F1F5FB;
  --card:#FFFFFF;
  --border:#E3E9F2;
  --border-hover:#D5DEEE;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(16,24,40,.06);
  --sh-md:0 8px 24px rgba(16,24,40,.08);
  --sh-lg:0 18px 48px rgba(16,24,40,.10);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;color:var(--brand);line-height:1.35;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--cyan)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--alt{background:var(--bg-alt)}
.section--white{background:var(--card)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.section-kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--brand-2);margin-bottom:14px}
.section-kicker::before{content:"";width:28px;height:3px;border-radius:2px;background:var(--amber)}
.section-title{font-size:30px;line-height:1.35;margin-bottom:14px}
.section-desc{font-size:16px;color:var(--ink-2);line-height:1.8;max-width:640px}
.section-head--center .section-desc{margin:0 auto}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;transition:all var(--ease);border:1px solid transparent;min-height:44px;white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-2);color:var(--brand-2)}
.btn-amber{background:var(--amber);color:var(--brand)}
.btn-amber:hover{background:#dfa84b;color:var(--brand)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;padding:4px 0}
.btn-text::after{content:"→";transition:transform var(--ease)}
.btn-text:hover{color:var(--brand-2);text-decoration:underline}
.btn-text:hover::after{transform:translateX(4px)}

/* top strip */
.top-strip{background:var(--brand);color:#fff;font-size:13px;line-height:1.5}
.top-strip .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:6px;padding-bottom:6px}
.top-strip span{color:#C7D0E4}
.top-strip a{color:#fff;font-weight:600;border-bottom:1px solid rgba(232,180,90,.7)}
.top-strip a:hover{color:var(--amber)}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow var(--ease)}
.site-header.is-scrolled{box-shadow:var(--sh-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--brand)}
.brand:hover{color:var(--brand)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:var(--brand-soft);border:1px solid var(--border)}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.01em}
.site-nav{display:flex;align-items:center;gap:28px}
.nav-list{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--ink-2);padding:6px 0}
.nav-link:hover{color:var(--brand)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--amber)}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:10px;border:1px solid var(--border)}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--brand);transition:transform var(--ease),opacity var(--ease)}
.site-header.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.nav-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* hero */
.hero{position:relative;overflow:hidden;padding:76px 0 64px;background:linear-gradient(180deg,#FFFFFF 0%,#F6F8FC 100%)}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:radial-gradient(circle,rgba(22,34,77,.18) 1px,transparent 1px),radial-gradient(circle,rgba(62,143,176,.20) 1px,transparent 1px);
  background-size:190px 150px,280px 220px;background-position:24px 40px,120px 90px;}
.hero-inner{position:relative;z-index:1}
.hero-copy{max-width:620px}
.hero-kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--brand-2);margin-bottom:18px}
.hero-kicker::before{content:"";width:48px;height:3px;border-radius:2px;background:var(--amber)}
.hero-title{font-size:44px;line-height:1.25;margin-bottom:20px}
.hero-sub{font-size:17px;line-height:1.85;color:var(--ink-2);margin-bottom:32px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);aspect-ratio:16/10;background:var(--brand-soft)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:56px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden}
.hero-stat{padding:24px 28px;border-right:1px solid var(--border)}
.hero-stat:last-child{border-right:0}
.hero-stat b{display:block;font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;margin-bottom:6px}
.hero-stat span{font-size:13px;color:var(--ink-3)}

/* capability asymmetric grid */
.cap-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:28px;height:100%;transition:all var(--ease)}
.cap-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:var(--border-hover)}
.cap-card--wide{padding:0;overflow:hidden;display:grid;grid-template-columns:1fr 1fr;align-items:stretch}
.cap-card--wide .cap-body{padding:32px}
.cap-card--wide .cap-media{position:relative;min-height:260px;background:var(--brand-soft)}
.cap-card--wide .cap-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cap-num{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);margin-bottom:12px}
.cap-num::before{content:"";width:16px;height:3px;border-radius:2px;background:var(--amber)}
.cap-title{font-size:18px;font-weight:600;margin-bottom:10px}
.cap-text{font-size:15px;line-height:1.8;color:var(--ink-2)}
.cap-soft{background:var(--brand-soft);border-color:var(--brand);display:flex;flex-direction:column;justify-content:center}
.grid-gap{margin-bottom:24px}

/* plans */
.plan-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:32px 28px;height:100%;display:flex;flex-direction:column;transition:all var(--ease)}
.plan-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.plan-card--featured{background:var(--brand-soft);border-color:var(--brand);box-shadow:var(--sh-lg);position:relative}
.plan-badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--brand);background:var(--amber);border-radius:999px;padding:4px 12px;margin-bottom:14px}
.plan-name{font-size:19px;font-weight:600;margin-bottom:8px}
.plan-note{font-size:14px;color:var(--ink-3);margin-bottom:22px}
.plan-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;flex:1}
.plan-list li{position:relative;padding-left:26px;font-size:15px;color:var(--ink-2);line-height:1.7}
.plan-list li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:8px;border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(-45deg)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:12px}
.step{position:relative;padding-right:24px}
.step::after{content:"";position:absolute;left:52px;right:0;top:19px;height:2px;background:var(--border)}
.step:last-child::after{display:none}
.step.is-done::after{background:var(--amber)}
.step-dot{position:relative;z-index:1;display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;font-size:15px;font-weight:700;border:2px solid var(--border);background:#fff;color:var(--ink-3);margin-bottom:16px}
.step.is-done .step-dot{background:var(--amber);border-color:var(--amber);color:var(--brand)}
.step.is-active .step-dot{border-color:var(--brand);color:var(--brand)}
.step-name{font-size:16px;font-weight:600;color:var(--brand);margin-bottom:6px}
.step-desc{font-size:14px;color:var(--ink-2);line-height:1.7;max-width:220px}

/* quotes */
.quote-card{background:#fff;border:1px solid var(--border);border-left:3px solid var(--brand);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:26px 28px;height:100%;display:flex;flex-direction:column;transition:all var(--ease)}
.quote-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.quote-text{font-size:15px;line-height:1.85;color:var(--ink-2);flex:1;margin-bottom:18px}
.quote-meta{font-size:13px;color:var(--ink-3)}

/* news */
.news-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;height:100%;display:flex;flex-direction:column;transition:all var(--ease)}
.news-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:var(--border-hover)}
.news-card:hover .news-title{color:var(--brand-2)}
.news-link{display:flex;flex-direction:column;height:100%;padding:16px;color:inherit}
.news-media{position:relative;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:var(--brand-soft);margin-bottom:16px}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease}
.news-card:hover .news-media img{transform:scale(1.03)}
.news-tag{display:inline-block;align-self:flex-start;font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 12px;margin-bottom:12px}
.news-title{font-size:17px;font-weight:600;line-height:1.55;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--ease)}
.news-excerpt{font-size:15px;line-height:1.7;color:var(--ink-2);margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-3);margin-top:auto;padding-top:14px;border-top:1px solid var(--border)}
.news-more{color:var(--brand);font-weight:600}
.empty-state{background:#fff;border:1px dashed var(--border-hover);border-radius:var(--r-card);padding:56px 24px;text-align:center;box-shadow:var(--sh-sm)}
.empty-state svg{margin:0 auto 16px;display:block;opacity:.35}
.empty-state p{font-size:15px;color:var(--ink-2);margin-bottom:18px}

/* faq */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:background var(--ease),border-color var(--ease)}
.faq-item.is-open{background:#F8FAFD;border-color:var(--border-hover)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;text-align:left;font-size:16px;font-weight:600;color:var(--brand);padding:20px 22px;min-height:44px}
.faq-sign{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--brand-2);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.faq-sign::before{left:0;top:8px;width:18px;height:2px}
.faq-sign::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-sign::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms ease}
.faq-a-inner{padding:0 22px 22px 22px;font-size:15px;line-height:1.8;color:var(--ink-2);border-left:3px solid transparent}
.faq-item.is-open .faq-a-inner{border-left-color:var(--amber);padding-left:19px;margin-left:22px}

/* contact form */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:32px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:8px}
.field input,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--r-btn);background:#fff;font-size:15px;transition:border-color var(--ease),box-shadow var(--ease)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(22,34,77,.10)}
.field textarea{min-height:120px;resize:vertical}
.form-hint{font-size:13px;color:var(--ink-3);margin-top:14px}

/* CTA band */
.cta-band{position:relative;border-radius:20px;overflow:hidden;padding:64px 56px;color:#fff;text-align:center;
  background-color:var(--brand);
  background-image:linear-gradient(90deg,rgba(22,34,77,.86),rgba(22,34,77,.72)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:14px}
.cta-band p{color:#D7DEEE;font-size:16px;max-width:600px;margin:0 auto 30px}
.cta-actions{display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:center}
.cta-band .btn-text{color:#fff}
.cta-band .btn-text:hover{color:var(--amber)}

/* footer */
.site-footer{background:var(--brand);color:#C7D0E4;padding:72px 0 32px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.18)}
.footer-brand .brand-text{color:#fff}
.footer-about{font-size:14px;line-height:1.85;color:#C7D0E4;max-width:300px}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:#C7D0E4}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;line-height:1.9;color:#C7D0E4}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding-top:24px;font-size:13px;color:#93A0BE}
.footer-bottom a{color:#93A0BE}
.footer-bottom a:hover{color:#fff}

/* grid gutter tuning */
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{margin-left:12px;margin-right:12px}
.grid-margin-x>.small-12{width:calc(100% - 24px)}
@media print,screen and (min-width:768px){
  .grid-margin-x>.medium-6{width:calc(50% - 24px)}
}
@media print,screen and (min-width:1024px){
  .grid-margin-x>.large-4{width:calc(33.33333% - 24px)}
  .grid-margin-x>.large-5{width:calc(41.66667% - 24px)}
  .grid-margin-x>.large-7{width:calc(58.33333% - 24px)}
  .grid-margin-x>.medium-6{width:calc(50% - 24px)}
}

@media screen and (max-width:1279px){
  .container{max-width:960px}
  .hero-title{font-size:38px}
}
@media screen and (max-width:1023px){
  .container{max-width:100%;padding:0 24px}
  .section{padding:72px 0}
  .section-title{font-size:26px}
  .hero{padding:56px 0 48px}
  .hero-title{font-size:34px}
  .hero-copy{max-width:100%}
  .hero-figure{margin-top:36px}
  .cap-card--wide{grid-template-columns:1fr}
  .cap-card--wide .cap-media{min-height:220px}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-toggle{display:flex}
  .site-nav{position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--sh-md);padding:8px 24px 20px}
  .site-header.nav-open .site-nav{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{display:block;line-height:48px;border-bottom:1px solid var(--border);padding:0}
  .nav-link.is-active::after{display:none}
  .nav-cta{width:100%;margin-top:14px}
}
@media screen and (max-width:767px){
  .section{padding:56px 0}
  .top-strip{display:none}
  .hero-title{font-size:30px}
  .hero-sub{font-size:16px}
  .section-title{font-size:22px}
  .hero-stats{grid-template-columns:1fr;margin-top:36px}
  .hero-stat{border-right:0;border-bottom:1px solid var(--border);padding:18px 22px}
  .hero-stat:last-child{border-bottom:0}
  .steps{grid-template-columns:1fr;gap:20px}
  .step{padding-right:0;padding-left:56px}
  .step::after{left:19px;top:44px;bottom:-20px;right:auto;width:2px;height:auto}
  .step:last-child::after{display:none}
  .step-dot{position:absolute;left:0;top:0;margin-bottom:0}
  .cta-band{padding:44px 24px}
  .cta-band h2{font-size:24px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .site-footer{padding:56px 0 24px;margin-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media screen and (max-width:519px){
  .container{padding:0 20px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .cap-card{padding:22px}
  .form-card{padding:24px}
  .faq-q{padding:16px 16px;font-size:15px}
  .faq-a-inner{padding:0 16px 18px}
  .faq-item.is-open .faq-a-inner{margin-left:16px;padding-left:13px}
}

/* roulang page: article */
:root{
  --ink:#16224D;
  --ink-2:#2A3C7A;
  --ink-soft:#EEF1F9;
  --amber:#E8B45A;
  --cyan:#3E8FB0;
  --bg:#F6F8FC;
  --bg-alt:#F1F5FB;
  --card:#FFFFFF;
  --text:#101827;
  --text-2:#4A5568;
  --text-3:#8A93A6;
  --border:#E3E9F2;
  --border-2:#D5DEEE;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,24,40,.06);
  --sh-md:0 8px 24px rgba(16,24,40,.08);
  --sh-lg:0 18px 48px rgba(16,24,40,.10);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--cyan)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:32px;padding-right:32px}

/* ---------- 顶部提示条 ---------- */
.topbar{background:var(--ink);color:#fff;font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-inner span{opacity:.86}
.topbar-inner a{color:var(--amber);font-weight:600}
.topbar-inner a:hover{color:#fff}

/* ---------- 页头与导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:var(--sh-sm)}
.header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--ink-soft);display:inline-flex;align-items:center;justify-content:center}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.site-nav{display:flex;align-items:center;gap:28px}
.nav-list{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--text-2)}
.nav-link:hover{color:var(--ink)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--amber)}
.nav-cta{padding:11px 22px;font-size:14px}
.nav-toggle{display:none;width:44px;height:40px;padding:0;background:#fff;border:1px solid var(--border);border-radius:10px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border:1px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#22336B;color:#fff;box-shadow:var(--sh-md);transform:translateY(-1px)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--border-2)}
.btn-ghost:hover{background:var(--ink-soft);border-color:var(--ink-2);color:var(--ink)}
.btn-amber{background:var(--amber);color:#16224D}
.btn-amber:hover{background:#DFA845;color:#16224D;box-shadow:var(--sh-md);transform:translateY(-1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink)}
.btn-text svg{transition:transform .18s ease}
.btn-text:hover{color:var(--cyan);text-decoration:underline}
.btn-text:hover svg{transform:translateX(4px)}

/* ---------- 标签 / 徽章 ---------- */
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);background:var(--ink-soft);color:var(--ink);font-size:12px;font-weight:600;letter-spacing:.06em}
.tag-amber{background:rgba(232,180,90,.18);color:#8A5F14}
.tag-line{background:transparent;border:1px solid var(--border-2);color:var(--text-2)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:16px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb .sep{color:var(--border-2)}
.breadcrumb .current{color:var(--ink);font-weight:600;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-hero{background:#fff;border-bottom:1px solid var(--border);padding:36px 0 32px}
.article-hero h1{font-size:44px;line-height:1.25;letter-spacing:0;max-width:900px}
.article-hero .lead{max-width:760px;margin-top:16px;font-size:16px;color:var(--text-2);line-height:1.8}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;margin-top:24px;padding-top:20px;border-top:1px solid var(--border);font-size:14px;color:var(--text-3)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--border-2)}

/* ---------- 主体布局 ---------- */
.article-main{padding:44px 0 88px}
.layout{padding-left:0;padding-right:0}
.main-col{padding-left:0;padding-right:0}
.article-cover{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);background:var(--ink-soft);aspect-ratio:16/9;margin-bottom:28px}
.article-cover img{width:100%;height:100%;object-fit:cover}

.article-body{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:40px;font-size:17px;line-height:1.9;color:#243044;min-height:340px}
.article-body > * + *{margin-top:20px}
.article-body h2{font-size:24px;line-height:1.45;margin-top:38px;padding-left:14px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--amber)}
.article-body h3{font-size:19px;font-weight:600;margin-top:28px}
.article-body h4{font-size:17px;font-weight:600;margin-top:22px}
.article-body p{font-size:17px;line-height:1.9}
.article-body ul{list-style:disc;padding-left:24px}
.article-body ol{list-style:decimal;padding-left:24px}
.article-body li{line-height:1.85}
.article-body li + li{margin-top:8px}
.article-body blockquote{margin:24px 0;padding:18px 22px;border-left:4px solid var(--ink);background:#F8FAFD;border-radius:0 12px 12px 0;color:var(--text-2)}
.article-body blockquote p{font-size:16px}
.article-body img{border-radius:var(--r-img);margin:8px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{margin-top:8px;font-size:13px;color:var(--text-3);text-align:center}
.article-body a{color:var(--ink-2);text-decoration:underline;text-decoration-color:var(--border-2);text-underline-offset:3px}
.article-body a:hover{color:var(--cyan)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left}
.article-body th{background:var(--bg-alt);font-weight:600}
.article-body code{background:var(--ink-soft);color:var(--ink);padding:2px 6px;border-radius:6px;font-size:15px}
.article-body pre{overflow-x:auto;background:#0F1733;color:#E6ECFA;padding:18px;border-radius:12px;font-size:14px}
.article-body hr{border:none;border-top:1px solid var(--border);margin:32px 0}

/* ---------- 空态 ---------- */
.empty-state{text-align:center;padding:56px 20px}
.empty-state svg{opacity:.28;margin:0 auto 18px}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:20px}

/* ---------- 上一篇 / 下一篇 ---------- */
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.prevnext a{display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.prevnext a:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--border-2)}
.prevnext .dir{display:block;font-size:12px;letter-spacing:.06em;color:var(--text-3);margin-bottom:8px}
.prevnext .pn-title{display:block;font-size:16px;font-weight:600;color:var(--ink);line-height:1.55}

/* ---------- 文末相关推荐 ---------- */
.sub-block{margin-top:56px}
.sub-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.sub-head h2{font-size:24px}
.sub-head p{font-size:15px;color:var(--text-2);margin-top:8px}
.list-card{display:flex;flex-direction:column;height:100%;background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.list-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--border-2)}
.list-card .thumb{aspect-ratio:16/9;background:var(--ink-soft);overflow:hidden}
.list-card .thumb img{width:100%;height:100%;object-fit:cover}
.list-card .card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.list-card .card-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-card:hover .card-title{color:var(--ink-2)}
.list-card .card-excerpt{font-size:15px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--text-3)}
.cards-grid{margin-bottom:-24px}
.cards-grid > [class*="cell"]{margin-bottom:24px}

/* ---------- 侧栏 ---------- */
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);padding:22px}
.side-card h3{font-size:16px;margin-bottom:14px}
.side-card.is-accent{background:var(--ink-soft);border-color:#DCE3F5;box-shadow:none}
.side-info-list li + li{margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}
.side-info-list .k{display:block;font-size:13px;color:var(--text-3);margin-bottom:4px}
.side-info-list .v{font-size:15px;font-weight:600;color:var(--ink)}
.side-list li + li{margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}
.side-list a{display:block;font-size:15px;font-weight:600;color:var(--text-2);line-height:1.6}
.side-list a:hover{color:var(--ink)}
.side-list .side-meta{display:block;margin-top:4px;font-size:13px;color:var(--text-3);font-weight:400}
.side-actions{display:flex;flex-direction:column;gap:12px}
.side-card .eyebrow{display:block;font-size:12px;letter-spacing:.08em;color:var(--ink-2);font-weight:600;margin-bottom:10px}
.side-card.is-accent p{font-size:15px;color:var(--text-2);line-height:1.7;margin-bottom:16px}

/* ---------- 尾部 CTA ---------- */
.cta-wrap{padding:0 0 88px}
.cta-band{position:relative;border-radius:20px;overflow:hidden;background-image:url(/assets/images/backpic/back-2.webp);background-size:cover;background-position:center;box-shadow:var(--sh-md)}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(22,34,77,.76)}
.cta-inner{position:relative;padding:60px 48px;text-align:center;color:#fff}
.cta-inner h2{color:#fff;font-size:28px;line-height:1.4}
.cta-inner p{margin-top:14px;font-size:16px;color:#D8DFF1;line-height:1.8}
.cta-actions{display:flex;justify-content:center;align-items:center;gap:20px;flex-wrap:wrap;margin-top:28px}
.cta-link{color:#fff;font-size:15px;font-weight:600;text-decoration:underline;text-underline-offset:4px}
.cta-link:hover{color:var(--amber)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C7D0E4;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08)}
.footer-brand .brand-text{color:#fff}
.footer-about{font-size:14px;line-height:1.85;color:#AEB9D4;max-width:320px}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col li + li{margin-top:10px}
.footer-col a{font-size:14px;color:#C7D0E4}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;line-height:1.95;color:#AEB9D4}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:#94A0BF}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-hero h1{font-size:38px}
}
@media (max-width:1023px){
  .container{padding-left:24px;padding-right:24px}
  .nav-toggle{display:flex}
  .site-nav{display:none;position:absolute;left:-24px;right:-24px;top:calc(100% + 1px);flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--sh-md);padding:8px 24px 24px}
  .site-nav.is-open{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid var(--border)}
  .nav-link{display:block;line-height:48px;font-size:16px;padding:0}
  .nav-link.is-active::after{display:none}
  .nav-cta{margin-top:18px;width:100%}
  .article-hero h1{font-size:32px}
  .article-body{padding:28px}
  .side-sticky{position:static;margin-top:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .topbar{display:none}
  .container{padding-left:20px;padding-right:20px}
  .article-main{padding:32px 0 64px}
  .article-hero{padding:24px 0 24px}
  .article-hero h1{font-size:28px}
  .article-hero .lead{font-size:15px}
  .meta-row{gap:10px 16px;font-size:13px}
  .article-body{padding:22px 20px;font-size:16px;border-radius:14px}
  .article-body p{font-size:16px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .prevnext{grid-template-columns:1fr}
  .sub-head{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-inner{padding:44px 24px}
  .cta-inner h2{font-size:22px}
  .btn{width:100%}
  .cta-actions .cta-link{width:100%;text-align:center}
  .side-card{padding:18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .article-hero h1{font-size:25px}
  .brand-text{font-size:16px}
  .article-body{padding:20px 16px}
}

/* roulang page: category1 */
:root{
  --ink:#16224D;
  --ink-hover:#22336B;
  --ink-soft:#2A3C7A;
  --ink-tint:#EEF1F9;
  --amber:#E8B45A;
  --amber-dark:#D9A344;
  --teal:#3E8FB0;
  --bg:#F6F8FC;
  --bg-alt:#F1F5FB;
  --surface:#FFFFFF;
  --text:#101827;
  --text-2:#4A5568;
  --text-3:#8A93A6;
  --line:#E3E9F2;
  --line-2:#D5DEEE;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,24,40,.06);
  --sh-md:0 8px 24px rgba(16,24,40,.08);
  --sh-lg:0 18px 48px rgba(16,24,40,.10);
  --sp-section:96px;
  --font-base:'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--teal);}
p{margin:0 0 20px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:0;}
h1{font-size:44px;line-height:1.25;}
h2{font-size:30px;line-height:1.35;}
h3{font-size:18px;font-weight:600;line-height:1.5;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sp-section) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:680px;margin-bottom:32px;}
.section-head p{font-size:16px;color:var(--text-2);margin:12px 0 0;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.06em;font-weight:600;
  color:var(--ink);background:var(--ink-tint);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:16px;
}
.section-head h2{position:relative;padding-left:18px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.38em;width:5px;height:5px;border-radius:50%;
  background:var(--amber);
}

/* ---------- 顶部细条 ---------- */
.topbar{background:var(--ink);color:#fff;font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:36px;gap:16px;}
.topbar span{color:rgba(255,255,255,.82);}
.topbar a{color:#fff;border-bottom:1px solid rgba(232,180,90,.65);padding-bottom:1px;}
.topbar a:hover{color:var(--amber);border-color:var(--amber);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-sm);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;background:var(--ink-tint);}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.brand:hover .brand-text{color:var(--ink-hover);}
.site-nav{display:flex;align-items:center;gap:28px;}
.nav-list{display:flex;align-items:center;gap:28px;}
.nav-link{position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;
  padding:14px 28px;border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
  text-align:center;
}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-primary:hover{background:var(--ink-hover);border-color:var(--ink-hover);color:#fff;box-shadow:var(--sh-md);transform:translateY(-1px);}
.btn-primary:active{background:var(--ink);transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink-tint);border-color:var(--ink-hover);color:var(--ink-hover);}
.btn-ghost:active{transform:translateY(1px);box-shadow:none;}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);background:none;border:0;padding:0;cursor:pointer;}
.btn-text .arrow{transition:transform .18s ease;}
.btn-text:hover{color:var(--teal);text-decoration:underline;text-underline-offset:4px;}
.btn-text:hover .arrow{transform:translateX(4px);}
.nav-cta{padding:12px 22px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:#fff;padding:0;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:transform .18s ease,opacity .18s ease;}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-active span:nth-child(2){opacity:0;}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Banner ---------- */
.page-banner{
  position:relative;overflow:hidden;color:#fff;padding:72px 0 68px;
  background-image:linear-gradient(115deg,rgba(22,34,77,.92) 0%,rgba(22,34,77,.76) 55%,rgba(42,60,122,.72) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(2px 2px at 16% 30%,rgba(255,255,255,.5),transparent 60%),
    radial-gradient(2px 2px at 68% 20%,rgba(232,180,90,.45),transparent 60%),
    radial-gradient(2px 2px at 84% 66%,rgba(255,255,255,.38),transparent 60%),
    radial-gradient(1.5px 1.5px at 38% 78%,rgba(255,255,255,.34),transparent 60%);
}
.page-banner .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;margin-bottom:18px;color:rgba(255,255,255,.62);}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.breadcrumb .sep{color:rgba(255,255,255,.35);}
.breadcrumb .current{color:var(--amber);}
.page-banner h1{color:#fff;max-width:900px;}
.page-banner .banner-sub{margin:16px 0 0;font-size:17px;line-height:1.7;color:rgba(255,255,255,.82);max-width:720px;}

/* ---------- 目录列表 ---------- */
.index-list{border-top:1px solid var(--line);background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;}
.index-item{border-bottom:1px solid var(--line);}
.index-item:last-child{border-bottom:0;}
.index-link{
  display:grid;grid-template-columns:56px 1fr 28px;align-items:center;gap:16px;
  padding:22px 24px;min-height:72px;color:var(--text);
  transition:background-color .18s ease;
}
.index-link:hover{background:var(--bg);color:var(--text);}
.index-num{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--ink);}
.index-main{min-width:0;}
.index-title{display:block;font-size:18px;font-weight:600;color:var(--text);margin-bottom:6px;transition:color .18s ease;}
.index-desc{display:block;font-size:15px;line-height:1.7;color:var(--text-2);}
.index-arrow{justify-self:end;color:var(--ink-soft);transition:transform .18s ease;}
.index-link:hover .index-title{color:var(--ink);}
.index-link:hover .index-arrow{transform:translateX(4px);}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:48px;}
.step{position:relative;padding-right:32px;}
.step::after{content:"";position:absolute;top:19px;left:48px;right:12px;height:2px;background:var(--line-2);}
.step:last-child::after{display:none;}
.step-dot{
  position:relative;z-index:1;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:var(--ink);
  background:#fff;border:2px solid var(--line-2);
}
.step.is-done .step-dot{background:var(--amber);border-color:var(--amber);}
.step.is-active .step-dot{border-color:var(--ink);box-shadow:0 0 0 4px rgba(22,34,77,.08);}
.step.is-done::after{background:var(--amber);}
.step-name{font-size:16px;font-weight:600;margin:16px 0 6px;}
.step-desc{font-size:13px;line-height:1.7;color:var(--text-2);margin:0;}

/* ---------- 图文要点 ---------- */
.media-figure{margin:0;}
.figure-img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-card);box-shadow:var(--sh-md);
}
.figcaption{font-size:13px;color:var(--text-3);margin-top:12px;text-align:center;}
.point-list{margin-top:28px;}
.point-item{border-left:3px solid var(--amber);padding:2px 0 2px 18px;margin-bottom:22px;}
.point-item:last-child{margin-bottom:0;}
.point-item h3{font-size:17px;margin-bottom:6px;}
.point-item p{font-size:15px;line-height:1.75;color:var(--text-2);margin:0;}
.lead-text{font-size:16px;line-height:1.85;color:var(--text-2);}

/* ---------- 场景行 ---------- */
.scene-list{display:grid;gap:16px;}
.scene-row{
  display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:start;
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--ink);
  border-radius:var(--r-card);padding:24px 28px;box-shadow:var(--sh-sm);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.scene-row:hover{border-left-color:var(--amber);box-shadow:var(--sh-md);transform:translateY(-2px);}
.scene-row h3{font-size:17px;margin-bottom:8px;}
.scene-row p{font-size:15px;line-height:1.75;color:var(--text-2);margin:0;}
.scene-tag{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--ink);background:var(--ink-tint);border-radius:var(--r-pill);padding:5px 12px;margin-bottom:10px;
}

/* ---------- CTA 条 ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:var(--ink-tint);border:1px solid #DDE4F2;border-radius:20px;
  padding:40px 44px;
}
.cta-bar h2{font-size:24px;margin-bottom:10px;}
.cta-bar p{font-size:15px;line-height:1.75;color:var(--text-2);margin:0;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C7D0E4;padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:700;}
.footer-about{font-size:14px;line-height:1.85;color:#AEB9D6;margin:0;}
.footer-col h3{font-size:14px;letter-spacing:.06em;color:#fff;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#C7D0E4;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-col p{font-size:14px;line-height:1.9;color:#C7D0E4;margin:0;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;
  font-size:13px;color:#8A96B8;
}

/* ---------- 断点 ---------- */
@media (max-width:1279px){
  h1{font-size:38px;}
  h2{font-size:26px;}
  .container{padding:0 32px;}
  :root{--sp-section:80px;}
}
@media (max-width:1023px){
  h1{font-size:34px;}
  h2{font-size:24px;}
  :root{--sp-section:72px;}
  .header-inner{gap:16px;}
  .nav-list{gap:18px;}
  .nav-link{font-size:14px;}
  .site-nav{gap:18px;}
  .scene-row{grid-template-columns:1fr;gap:12px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  h1{font-size:30px;}
  h2{font-size:22px;}
  :root{--sp-section:56px;}
  .container{padding:0 20px;}
  .topbar{display:none;}
  .nav-toggle{display:flex;}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-md);
    padding:8px 20px 20px;
    display:none;
  }
  .site-nav.is-open{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-list li{border-bottom:1px solid var(--line);}
  .nav-link{display:block;padding:14px 0;min-height:48px;font-size:15px;}
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--ink);}
  .nav-cta{margin-top:16px;width:100%;}
  .page-banner{padding:48px 0 44px;}
  .page-banner .banner-sub{font-size:16px;}
  .index-link{grid-template-columns:40px 1fr 20px;gap:12px;padding:18px 16px;}
  .index-title{font-size:17px;}
  .index-desc{font-size:14px;}
  .steps{grid-template-columns:1fr;gap:24px;margin-top:32px;}
  .step{padding:0 0 0 56px;min-height:40px;}
  .step::after{left:19px;top:48px;bottom:-24px;right:auto;width:2px;height:auto;}
  .step:last-child::after{display:none;}
  .step-dot{position:absolute;left:0;top:0;}
  .step-name{margin-top:0;}
  .btn{width:100%;padding:14px 20px;}
  .btn-text{width:auto;}
  .cta-actions{width:100%;}
  .cta-bar{padding:28px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519px){
  h1{font-size:27px;}
  .index-link{grid-template-columns:34px 1fr 18px;}
  .scene-row{padding:20px;}
}

/* roulang page: category2 */
:root{
  --ink:#16224D;
  --ink-hover:#22336B;
  --ink-2:#2A3C7A;
  --ink-soft:#EEF1F9;
  --amber:#E8B45A;
  --amber-hover:#DFA945;
  --cyan:#3E8FB0;
  --bg:#F6F8FC;
  --bg-alt:#F1F5FB;
  --white:#FFFFFF;
  --text:#101827;
  --text-2:#4A5568;
  --text-3:#8A93A6;
  --line:#E3E9F2;
  --line-2:#D5DEEE;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(16,24,40,.06);
  --shadow-md:0 8px 24px rgba(16,24,40,.08);
  --shadow-lg:0 18px 48px rgba(16,24,40,.10);
  --space-section:96px;
  --font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-family);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--cyan);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;font-size:14px;
}
.skip-link:focus{left:0;color:#fff;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);}
.header-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;border-radius:50%;
  background:var(--ink-soft);
  display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.02em;line-height:1;}
.site-nav{display:flex;align-items:center;gap:28px;}
.nav-list{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;
  display:inline-block;
  font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 2px;
}
.nav-link:hover{color:var(--ink);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--amber);border-radius:var(--radius-pill);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 28px;border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  text-align:center;
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--ink-hover);color:#fff;box-shadow:var(--shadow-md);transform:translateY(-1px);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-secondary{background:#fff;color:var(--ink);border-color:var(--line-2);}
.btn-secondary:hover{background:var(--ink-soft);color:var(--ink);border-color:var(--ink-2);}
.btn-amber{background:var(--amber);color:var(--ink);}
.btn-amber:hover{background:var(--amber-hover);color:var(--ink);box-shadow:var(--shadow-md);transform:translateY(-1px);}
.btn-amber:active{transform:none;box-shadow:none;}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.72);}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--ink);
  padding:4px 0;border-bottom:1px solid transparent;
}
.btn-text .arrow{display:inline-block;transition:transform .18s ease;}
.btn-text:hover{color:var(--ink);border-bottom-color:var(--cyan);}
.btn-text:hover .arrow{transform:translateX(4px);}

/* banner */
.page-banner{
  position:relative;
  color:#fff;
  background-image:linear-gradient(90deg,rgba(22,34,77,.93) 0%,rgba(22,34,77,.76) 52%,rgba(22,34,77,.55) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.page-banner .container{
  min-height:308px;
  display:flex;flex-direction:column;justify-content:center;
  padding-top:52px;padding-bottom:60px;
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:rgba(255,255,255,.68);margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .current{color:#fff;font-weight:600;}
.page-banner h1{
  font-size:44px;line-height:1.25;font-weight:700;color:#fff;
  max-width:880px;letter-spacing:0;
}
.banner-rule{display:block;width:48px;height:3px;border-radius:2px;background:var(--amber);margin:22px 0 0;}
.banner-sub{margin-top:16px;font-size:17px;line-height:1.75;color:rgba(255,255,255,.84);max-width:660px;}

/* sections */
.section{padding:var(--space-section) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--ink-2);background:var(--ink-soft);
  padding:6px 14px;border-radius:var(--radius-pill);margin-bottom:18px;
}
.section-head h2{font-size:30px;line-height:1.35;font-weight:700;color:var(--ink);}
.section-head p{margin-top:16px;font-size:16px;line-height:1.85;color:var(--text-2);}

/* overview */
.overview-row{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start;}
.overview-lead h2{font-size:30px;line-height:1.35;font-weight:700;color:var(--ink);}
.overview-lead p{margin-top:18px;font-size:16px;line-height:1.85;color:var(--text-2);}
.point-list{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);padding:6px;
}
.point-item{display:flex;gap:16px;padding:18px 16px;border-bottom:1px solid var(--line);}
.point-item:last-child{border-bottom:0;}
.point-index{
  flex:0 0 auto;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--ink-2);padding-top:4px;font-variant-numeric:tabular-nums;
}
.point-item h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.point-item p{font-size:15px;line-height:1.75;color:var(--text-2);}

/* zigzag */
.zz-section{padding:0;}
.zz-block{padding:76px 0;background:#fff;}
.zz-block.is-alt{background:var(--bg-alt);}
.zz-row{align-items:center;}
.zz-media{
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-md);aspect-ratio:4/3;
}
.zz-media img{width:100%;height:100%;object-fit:cover;}
.zz-body{padding:0 8px;}
.zz-body .tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--ink);background:var(--ink-soft);
  padding:6px 13px;border-radius:var(--radius-pill);margin-bottom:18px;
}
.zz-body h2{font-size:26px;line-height:1.4;font-weight:700;color:var(--ink);margin-bottom:16px;}
.zz-body p{font-size:16px;line-height:1.85;color:var(--text-2);margin-bottom:14px;}
.zz-body .btn-text{margin-top:8px;}
@media (min-width:1024px){
  .zz-row.is-reverse .zz-media{order:2;}
  .zz-row.is-reverse .zz-body{order:1;}
}

/* stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--line-2);}
.stat-num{font-size:28px;font-weight:700;color:var(--ink);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat-label{margin-top:10px;font-size:14px;line-height:1.65;color:var(--text-3);}
.stats-note{margin-top:24px;font-size:14px;color:var(--text-3);}

/* scenes */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 28px;box-shadow:var(--shadow-sm);
  transition:box-shadow .18s ease,transform .18s ease;
}
.scene-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.scene-card h3{font-size:19px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.scene-card .scene-sub{font-size:14px;color:var(--text-3);margin-bottom:18px;}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:12px;
  font-size:15px;line-height:1.78;color:var(--text-2);
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";position:absolute;left:2px;top:9px;
  width:11px;height:6px;border-left:2px solid var(--ink-2);border-bottom:2px solid var(--ink-2);
  transform:rotate(-45deg);border-radius:1px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.pill{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:7px 14px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  padding:60px 52px;color:#fff;box-shadow:var(--shadow-lg);
  background-image:linear-gradient(90deg,rgba(22,34,77,.92) 0%,rgba(22,34,77,.72) 58%,rgba(22,34,77,.58) 100%),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
}
.cta-band h2{font-size:30px;line-height:1.35;font-weight:700;color:#fff;max-width:760px;}
.cta-band p{margin-top:16px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.86);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:30px;}
.cta-actions .btn-text{color:#fff;}
.cta-actions .btn-text:hover{color:#fff;border-bottom-color:var(--amber);}

/* footer */
.site-footer{background:var(--ink);color:#C7D0E4;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.09);}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:700;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:#A9B5CE;max-width:330px;}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#C7D0E4;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;line-height:1.9;color:#A9B5CE;}
.footer-bottom{
  margin-top:48px;padding:20px 0 24px;border-top:1px solid rgba(255,255,255,.13);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#8E9BB8;
}

/* responsive */
@media (max-width:1279px){
  .container{max-width:1040px;}
  .page-banner h1{font-size:38px;}
  .section-head h2,.overview-lead h2,.cta-band h2{font-size:27px;}
  .zz-body h2{font-size:24px;}
}
@media (max-width:1023px){
  :root{--space-section:72px;}
  .container{max-width:960px;padding:0 24px;}
  .header-inner{height:64px;}
  .nav-toggle{display:flex;}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:8px 20px 20px;box-shadow:var(--shadow-md);
  }
  .site-nav.is-open{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-list li{border-bottom:1px solid var(--line);}
  .nav-list li:last-child{border-bottom:0;}
  .nav-link{display:block;padding:15px 0;font-size:16px;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{font-weight:700;}
  .nav-cta{margin-top:18px;width:100%;}
  .page-banner h1{font-size:34px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .overview-row{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--space-section:56px;}
  .container{padding:0 20px;}
  .page-banner .container{min-height:0;padding-top:34px;padding-bottom:44px;}
  .page-banner h1{font-size:30px;}
  .banner-sub{font-size:16px;margin-top:14px;}
  .breadcrumb{margin-bottom:14px;}
  .section-head{margin-bottom:28px;}
  .section-head h2,.overview-lead h2,.cta-band h2{font-size:22px;}
  .zz-block{padding:48px 0;}
  .zz-media{margin-bottom:26px;}
  .zz-body{padding:0;}
  .zz-body h2{font-size:21px;}
  .zz-body p{font-size:16px;}
  .stats-grid{grid-template-columns:1fr;gap:16px;}
  .scene-grid{grid-template-columns:1fr;gap:16px;}
  .cta-band{padding:38px 24px;border-radius:16px;}
  .cta-actions{gap:12px;}
  .cta-actions .btn{width:100%;}
  .cta-actions .btn-text{width:auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:479px){
  .page-banner h1{font-size:26px;}
  .btn{width:100%;}
  .btn-text{width:auto;}
  .stat-card{padding:22px 20px;}
  .scene-card{padding:24px 20px;}
}

/* roulang page: category3 */
:root{
  --ink:#16224D;
  --ink-2:#2A3C7A;
  --ink-soft:#EEF1F9;
  --amber:#E8B45A;
  --amber-deep:#D9A445;
  --teal:#3E8FB0;
  --bg:#F6F8FC;
  --bg-alt:#F1F5FB;
  --bg-soft:#F8FAFD;
  --white:#FFFFFF;
  --text:#101827;
  --text-2:#4A5568;
  --text-3:#8A93A6;
  --line:#E3E9F2;
  --line-2:#D5DEEE;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,24,40,.06);
  --sh-md:0 8px 24px rgba(16,24,40,.08);
  --sh-lg:0 18px 48px rgba(16,24,40,.10);
  --pad-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--ink);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--teal)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0}
p{margin:0}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-sm)}
.header-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:18px}
.brand:hover{color:var(--ink)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;background:var(--ink-soft);
}
.brand-text{letter-spacing:.02em}
.site-nav{display:flex;align-items:center;gap:28px}
.nav-list{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;display:inline-block;
  font-size:15px;font-weight:500;color:var(--text-2);padding:8px 0;
}
.nav-link:hover{color:var(--ink)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--amber);
}
.nav-cta{padding:11px 22px;font-size:14px}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;margin:0 auto;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--r-btn);
  padding:14px 28px;font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;text-align:center;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:#22336B;color:#fff;box-shadow:var(--sh-md);transform:translateY(-1px)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{background:var(--ink-soft);border-color:var(--ink-2);color:var(--ink)}
.btn-amber{background:var(--amber);color:var(--ink);box-shadow:var(--sh-sm)}
.btn-amber:hover{background:var(--amber-deep);color:var(--ink);box-shadow:var(--sh-md);transform:translateY(-1px)}
.btn-amber:active{transform:none;box-shadow:none}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);
}
.btn-link .arrow{transition:transform .18s ease;font-size:13px}
.btn-link:hover{color:var(--ink);text-decoration:underline}
.btn-link:hover .arrow{transform:translateX(4px)}
.btn:disabled,.btn.is-disabled{opacity:.6;cursor:not-allowed}

/* ---------- 通用区块 ---------- */
.section{padding:var(--pad-section) 0}
.section-alt{background:var(--bg-alt)}
.section-white{background:var(--white)}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{font-size:30px;line-height:1.35;margin-bottom:12px}
.section-sub{font-size:16px;color:var(--text-2);line-height:1.8}
.eyebrow{
  display:inline-block;margin-bottom:12px;
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ink-2);
  text-transform:uppercase;
}
.rule-short{width:48px;height:3px;border-radius:2px;background:var(--amber);margin-bottom:18px}

/* ---------- 内页 banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  display:flex;align-items:center;
  min-height:288px;padding:56px 0 60px;
  color:#fff;
  background-image:linear-gradient(180deg,rgba(22,34,77,.90),rgba(22,34,77,.74)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.45) 1px,transparent 1px),radial-gradient(rgba(255,255,255,.30) 1px,transparent 1px);
  background-size:180px 180px,260px 260px;
  background-position:12% 26%,78% 68%;
  opacity:.5;
}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:16px}
.breadcrumb a{color:rgba(255,255,255,.86)}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:var(--amber);font-weight:600}
.page-banner h1{color:#fff;font-size:44px;line-height:1.25;margin-bottom:14px}
.banner-sub{font-size:17px;color:rgba(255,255,255,.86);max-width:640px}
.banner-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.banner-meta span{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;color:#fff;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);
}

/* ---------- 筛选标签 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.chip{
  padding:9px 18px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;
  background:var(--ink-soft);color:var(--ink);
  border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.chip:hover{background:#E2E8F7;color:var(--ink)}
.chip.is-active{background:var(--ink);color:#fff;box-shadow:var(--sh-sm)}

/* ---------- 卡片墙 ---------- */
.cards-grid{margin:0 -12px}
.card-cell{padding:0 12px 24px}
.card{
  display:flex;flex-direction:column;height:100%;
  background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--line-2)}
.card:hover .card-title{color:var(--ink-2)}
.card-media{aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{display:flex;flex-direction:column;gap:12px;padding:20px 20px 18px;flex:1}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--ink-soft);color:var(--ink);
  font-size:12px;font-weight:600;letter-spacing:.06em;
}
.card-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--ink);transition:color .18s ease}
.card-text{font-size:15px;line-height:1.7;color:var(--text-2)}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- 分页 ---------- */
.pagination-nav{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:44px}
.page-num{
  min-width:42px;height:42px;padding:0 14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line-2);border-radius:var(--r-btn);
  font-size:14px;font-weight:600;color:var(--ink);cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.page-num:hover{background:var(--ink-soft);border-color:var(--ink)}
.page-num.is-current{background:var(--ink);border-color:var(--ink);color:#fff;cursor:default}
.page-num.is-current:hover{background:var(--ink)}

/* ---------- 分层列表 ---------- */
.layer-list{margin-top:36px;border-top:1px solid var(--line)}
.layer-row{
  display:grid;grid-template-columns:88px 1fr;gap:24px;
  padding:26px 24px;border-bottom:1px solid var(--line);
  transition:background-color .18s ease;
}
.layer-row:hover{background:var(--bg)}
.layer-num{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--ink-2);padding-top:6px;font-variant-numeric:tabular-nums}
.layer-row h3{font-size:19px;margin-bottom:6px}
.layer-row p{font-size:15px;color:var(--text-2)}
.layer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.layer-tags span{font-size:12px;padding:3px 10px;border-radius:var(--r-pill);background:var(--ink-soft);color:var(--ink-2)}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  background:var(--white);border:1px solid var(--line-2);border-radius:20px;
  padding:32px 36px;box-shadow:var(--sh-sm);
}
.cta-band h2{font-size:22px;margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--text-2)}
.cta-band-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:32px auto 0;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:background-color .18s ease,border-color .18s ease}
.faq-item.is-open{background:var(--bg-soft);border-color:var(--line-2)}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-sign{position:relative;width:18px;height:18px;flex:0 0 18px}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;
}
.faq-sign::before{left:0;top:8px;width:18px;height:2px}
.faq-sign::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-sign::after{transform:scaleY(0);opacity:0}
.faq-answer{display:none;padding:0 20px 20px}
.faq-item.is-open .faq-answer{display:block}
.faq-answer p{
  position:relative;padding-left:14px;
  font-size:15px;line-height:1.85;color:var(--text-2);
}
.faq-answer p::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--amber);
}

/* ---------- 尾部 CTA ---------- */
.cta-hero{
  position:relative;overflow:hidden;
  border-radius:20px;padding:64px 48px;
  color:#fff;
  background-image:linear-gradient(90deg,rgba(22,34,77,.92),rgba(22,34,77,.62)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  box-shadow:var(--sh-lg);
}
.cta-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:150px 150px;background-position:88% 22%;opacity:.45;
}
.cta-hero-inner{position:relative;z-index:2;max-width:640px}
.cta-hero h2{color:#fff;font-size:30px;line-height:1.35;margin-bottom:14px}
.cta-hero p{font-size:16px;color:rgba(255,255,255,.86);margin-bottom:28px}
.cta-hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.cta-hero .btn-link{color:#fff}
.cta-hero .btn-link:hover{color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C7D0E4;margin-top:8px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px;margin-bottom:16px}
.footer-brand:hover{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.10)}
.footer-about{font-size:14px;line-height:1.85;color:#A9B5CE;max-width:340px}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#C7D0E4}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-col p{font-size:14px;line-height:1.9;color:#A9B5CE}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 24px;
  font-size:13px;color:#97A3BF;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:960px}
  .page-banner h1{font-size:38px}
  .section-head h2{font-size:27px}
}
@media (max-width:1023px){
  :root{--pad-section:72px}
  .container{padding:0 26px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;top:100%;left:-26px;right:-26px;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-md);padding:8px 26px 20px;
  }
  .site-nav.is-open{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid var(--line)}
  .nav-link{display:block;padding:14px 0;font-size:15px;line-height:1.4}
  .nav-link.is-active::after{display:none}
  .nav-cta{margin-top:16px;width:100%}
  .page-banner{min-height:260px;padding:44px 0 48px}
  .page-banner h1{font-size:32px}
  .cta-hero{padding:48px 32px}
  .cta-hero h2{font-size:25px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--pad-section:56px}
  .container{padding:0 20px}
  body{font-size:16px}
  .page-banner h1{font-size:30px}
  .banner-sub{font-size:15px}
  .section-head h2{font-size:22px}
  .section-sub{font-size:15px}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cta-band-actions{width:100%}
  .cta-band-actions .btn{width:100%}
  .layer-row{grid-template-columns:1fr;gap:8px;padding:22px 4px}
  .layer-num{padding-top:0}
  .cta-hero{padding:38px 22px;border-radius:16px}
  .cta-hero h2{font-size:22px}
  .cta-hero-actions{flex-direction:column;align-items:stretch;gap:14px}
  .cta-hero-actions .btn{width:100%}
  .cta-hero .btn-link{justify-content:center}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .pagination-nav{gap:6px}
  .page-num{min-width:38px;height:38px;font-size:13px}
}
@media (max-width:520px){
  .card-title{font-size:17px}
  .filter-bar{gap:8px}
  .chip{padding:8px 14px;font-size:13px}
  .banner-meta span{font-size:12px;padding:5px 12px}
}