/* roulang page: index */
:root{
  --brand:#123A63;
  --brand-dark:#0E2F51;
  --brand-light:#E7EEF6;
  --accent:#17A398;
  --accent-light:#E3F5F2;
  --accent-deep:#0F6F68;
  --gold:#E9A93C;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --text:#14202B;
  --text-2:#56677A;
  --border:#E2E8F0;
  --danger:#D64545;
  --success:#2E9E6B;
  --r-card:16px;
  --r-btn:12px;
  --r-img:20px;
  --sh-1:0 2px 8px rgba(18,58,99,.06);
  --sh-2:0 10px 28px rgba(18,58,99,.12);
  --sh-3:0 6px 20px rgba(18,58,99,.10);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --num:"Inter","Segoe UI",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font);font-size:16.5px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1240px}}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--accent-deep);background:var(--accent-light);
  border-radius:999px;padding:6px 14px;margin-bottom:18px
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
h2.section-title{font-size:32px;line-height:1.35;font-weight:600;letter-spacing:-.01em}
.section-desc{margin-top:16px;color:var(--text-2);font-size:16.5px;max-width:640px}
.section-head--center .section-desc{margin-left:auto;margin-right:auto}
.section-title .hl{box-shadow:inset 0 -10px 0 rgba(233,169,60,.22)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .18s,color .18s,transform .18s,box-shadow .18s,border-color .18s;
  white-space:nowrap
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(18,58,99,.22)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(18,58,99,.18)}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-light);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:15px;
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
  transition:color .18s
}
.text-link:hover{color:var(--accent)}
.text-link::after{content:"→";transition:transform .18s}
.text-link:hover::after{transform:translateX(3px)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s
}
.site-header.is-scrolled{box-shadow:var(--sh-3)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:76px;transition:height .2s}
.site-header.is-scrolled .nav-wrap{height:64px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:34px;height:34px;flex-shrink:0}
.logo-text{font-size:18px;font-weight:700;color:var(--brand);letter-spacing:-.01em;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--accent)}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:block;padding:9px 13px;border-radius:999px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:background .18s,color .18s
}
.nav-link:hover{background:var(--brand-light);color:var(--brand)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px
}
.nav-cta{margin-left:16px;height:44px;padding:0 22px}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;border:1px solid var(--border);
  transition:background .18s
}
.nav-toggle:hover{background:var(--brand-light)}
.nav-toggle span{display:block}
.burger{width:18px;height:2px;background:var(--brand);border-radius:2px;position:relative}
.burger::before,.burger::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);border-radius:2px}
.burger::before{top:-6px}
.burger::after{top:6px}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:200;background:#fff;
  display:flex;flex-direction:column;padding:20px 20px 28px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s
}
.drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--text-2)
}
.drawer-close:hover{background:var(--brand-light);color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-link{padding:15px 14px;border-radius:12px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--border)}
.drawer-link:hover{background:var(--brand-light);color:var(--brand)}
.drawer-link.is-active{color:var(--brand);font-weight:600;background:var(--brand-light)}
.drawer-foot{margin-top:auto;padding-top:24px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:80px 0 72px;background:linear-gradient(180deg,#FFFFFF 0%,#F5F7FA 72%)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 16% 24%, rgba(18,58,99,.07) 0 2px, transparent 2px),
    radial-gradient(circle at 68% 16%, rgba(23,163,152,.07) 0 2px, transparent 2px),
    radial-gradient(circle at 42% 82%, rgba(18,58,99,.05) 0 2px, transparent 2px);
  background-size:190px 190px,250px 250px,300px 300px
}
.hero-grid{position:relative;display:grid;grid-template-columns:5fr 6fr;gap:56px;align-items:center}
.hero h1{
  font-size:50px;line-height:1.24;font-weight:700;letter-spacing:-.02em;
  margin-bottom:20px
}
.hero h1 .mark{color:var(--brand)}
.hero-sub{font-size:17.5px;color:var(--text-2);max-width:30em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-note{margin-top:20px;font-size:13px;color:var(--text-2);display:flex;align-items:center;gap:8px}
.hero-note .dot{width:6px;height:6px;border-radius:50%;background:var(--gold);flex-shrink:0}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-2)}
.hero-media::after{
  content:"";position:absolute;right:-22px;top:-22px;width:132px;height:132px;
  border:1px solid rgba(18,58,99,.14);border-radius:50%;pointer-events:none
}
.hero-media::before{
  content:"";position:absolute;left:-16px;bottom:-16px;width:88px;height:88px;
  border-radius:50%;border:1px solid rgba(23,163,152,.20);pointer-events:none
}

/* ---------- 信任条 ---------- */
.trustbar{padding:8px 0 72px}
.trustbar-row{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-item{padding:0 28px;border-left:1px solid var(--border)}
.trust-item:first-child{border-left:0;padding-left:0}
.trust-num{
  font-family:var(--num);font-variant-numeric:tabular-nums;
  font-size:31px;font-weight:700;color:var(--accent);line-height:1.2
}
.trust-num small{font-size:15px;font-weight:600;margin-left:2px}
.trust-label{margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.6}

/* ---------- 主张条 ---------- */
.promises{display:grid;grid-template-columns:1.35fr 1fr 1.15fr;gap:20px}
.promise{
  background:var(--brand-light);border-radius:var(--r-card);padding:28px;
  transition:transform .2s,box-shadow .2s
}
.promise:nth-child(2){transform:translateY(12px);background:var(--accent-light)}
.promise:hover{box-shadow:var(--sh-2)}
.promise-icon{
  width:40px;height:40px;border-radius:12px;background:#fff;
  display:flex;align-items:center;justify-content:center;margin-bottom:18px
}
.promise h3{font-size:19px;font-weight:600;margin-bottom:8px}
.promise p{font-size:15px;color:var(--text-2);line-height:1.75}

/* ---------- 故事区 ---------- */
.story-list{display:flex;flex-direction:column;gap:72px}
.story-row{display:grid;grid-template-columns:44% 1fr;gap:52px;align-items:center}
.story-row.is-reverse{grid-template-columns:1fr 44%}
.story-row.is-reverse .story-media{order:2}
.story-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--sh-1)
}
.story-body h3{font-size:22px;font-weight:600;margin-bottom:14px}
.story-body p{color:var(--text-2);font-size:16.5px;max-width:38em;margin-bottom:18px}
.story-meta{display:flex;gap:22px;flex-wrap:wrap;margin-bottom:20px}
.story-meta span{
  font-size:13px;color:var(--accent-deep);background:var(--accent-light);
  border-radius:999px;padding:5px 13px
}

/* ---------- 精选内容 ---------- */
.feature-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:24px}
.feature-aside{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.card{
  display:block;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s,box-shadow .2s,border-color .2s
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#C9D9EA}
.card:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.card-media{position:relative;overflow:hidden;background:var(--brand-light)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.03)}
.feature-main{display:flex;flex-direction:column}
.feature-main .card-media{aspect-ratio:16/9}
.card-body{padding:26px;display:flex;flex-direction:column;gap:12px}
.feature-main .card-body{padding:28px}
.card-tag{
  align-self:flex-start;font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-light);border-radius:999px;padding:5px 13px
}
.card-title{
  font-size:21px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.card-excerpt{
  font-size:15px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.card-foot{margin-top:auto;padding-top:6px;font-size:14px;color:var(--text-2);display:flex;gap:16px}
.feature-small{display:grid;grid-template-columns:150px 1fr;align-items:stretch}
.feature-small .card-media{aspect-ratio:auto;height:100%}
.feature-small .card-body{padding:22px}
.feature-small .card-title{font-size:17.5px}

/* ---------- 最新信息 ---------- */
.news-section{padding:96px 0}
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-card{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .2s,box-shadow .2s,border-color .2s
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#C9D9EA}
.news-card__title{
  font-size:19px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.news-card__link{color:var(--text);transition:color .18s}
.news-card__link::after{content:"";position:absolute;inset:0}
.news-card__link:hover{color:var(--brand)}
.news-card__excerpt{
  font-size:15px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.news-card__meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--border);
  display:flex;align-items:center;gap:14px;font-size:13.5px;color:var(--text-2)
}
.news-card__meta .badge{
  font-size:13px;font-weight:600;color:var(--accent-deep);
  background:var(--accent-light);border-radius:999px;padding:4px 12px
}
.news-empty{
  min-height:200px;border-radius:var(--r-card);background:#fff;
  border:1px dashed #C9D9EA;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:44px 24px
}
.news-empty svg{width:48px;height:48px;stroke:var(--brand);opacity:.5}
.news-empty p{color:var(--text-2);font-size:16px}

/* ---------- 信任背书 ---------- */
.proof{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:start}
.proof-note{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1)
}
.proof-note h3{font-size:19px;font-weight:600;margin-bottom:12px}
.proof-note p{font-size:15.5px;color:var(--text-2)}
.tag-wall{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.tag{
  font-size:13.5px;color:var(--brand);background:var(--brand-light);
  border-radius:999px;padding:8px 16px;transition:background .18s,color .18s
}
.tag:nth-child(3n){color:var(--accent-deep);background:var(--accent-light)}
.tag:hover{background:var(--brand);color:#fff}
.quote-list{display:flex;flex-direction:column;gap:18px}
.quote{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1)
}
.quote p{font-size:15.5px;color:var(--text);line-height:1.8}
.quote-who{display:flex;align-items:center;gap:12px;margin-top:18px}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand-light);
  color:var(--brand);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0
}
.quote-who strong{display:block;font-size:14.5px;font-weight:600}
.quote-who span{font-size:13px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:14px;
  margin-bottom:12px;overflow:hidden;transition:border-color .2s,box-shadow .2s
}
.faq-item.is-open{border-color:#C9D9EA;box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:600;line-height:1.6;
  transition:color .18s
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;transition:transform .22s ease,background .2s
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand);color:#fff}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease}
.faq-a-inner{overflow:hidden;font-size:15.8px;color:var(--text-2);transition:padding .28s ease}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-item.is-open .faq-a-inner{padding-bottom:22px}
.faq-a-inner p{padding:0 24px;max-width:60ch}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--brand-light) 0%,#F2F7FB 60%,var(--accent-light) 100%);
  border-radius:24px;padding:52px;
  display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:center
}
.cta-band h2{font-size:29px;font-weight:600;line-height:1.4}
.cta-band p{margin-top:14px;color:var(--text-2);font-size:16px;max-width:34em}
.subscribe-form{display:flex;gap:12px}
.subscribe-form input{
  flex:1;height:48px;border:1px solid var(--border);border-radius:12px;
  background:#fff;padding:0 16px;font-size:15px;color:var(--text);
  transition:border-color .18s,box-shadow .18s
}
.subscribe-form input::placeholder{color:#93A3B4}
.subscribe-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,58,99,.12)}
.subscribe-form input.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(214,69,69,.12)}
.form-tip{margin-top:12px;font-size:13px;color:var(--text-2)}
.form-msg{margin-top:10px;font-size:13.5px;display:none}
.form-msg.is-ok{display:block;color:var(--success)}
.form-msg.is-err{display:block;color:var(--danger)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.72);margin-top:96px}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:48px;padding:72px 0 48px
}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-text em{color:#5FD3C6}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.8;max-width:26em}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;transition:color .18s}
.footer-links a:hover{color:#fff}
.footer-sub{display:flex;flex-direction:column;gap:12px}
.footer-sub input{
  height:46px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;padding:0 16px;font-size:14.5px;
  transition:border-color .18s,background .18s
}
.footer-sub input::placeholder{color:rgba(255,255,255,.5)}
.footer-sub input:focus{outline:none;border-color:#5FD3C6;background:rgba(255,255,255,.1)}
.footer-sub .btn{height:46px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:13px
}
.footer-bottom a:hover{color:#fff}

@media (max-width:1279px){
  .nav-link{font-size:14.5px;padding:9px 10px}
  .nav-link.is-active::after{left:10px;right:10px}
  .nav-wrap{gap:16px}
  .nav-cta{padding:0 18px}
}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/9}
  .hero-media::after,.hero-media::before{display:none}
  .trustbar-row{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .trust-item:nth-child(3){border-left:0;padding-left:0}
  .promises{grid-template-columns:1fr}
  .promise:nth-child(2){transform:none}
  .story-row,.story-row.is-reverse{grid-template-columns:1fr;gap:28px}
  .story-row.is-reverse .story-media{order:0}
  .feature-grid{grid-template-columns:1fr}
  .feature-aside{grid-template-rows:auto;grid-template-columns:1fr 1fr}
  .news-list{grid-template-columns:1fr}
  .proof{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:900px){
  .nav{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero{padding:48px 0}
  .hero h1{font-size:32px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  h2.section-title{font-size:24px}
  .section-desc{font-size:15.5px}
  .trustbar{padding-bottom:48px}
  .trust-num{font-size:26px}
  .feature-aside{grid-template-columns:1fr}
  .feature-small{grid-template-columns:1fr}
  .feature-small .card-media{aspect-ratio:16/9;height:auto}
  .news-section{padding:56px 0}
  .news-card{padding:22px}
  .faq-q{font-size:16px;padding:18px 20px}
  .faq-a-inner p{padding:0 20px}
  .cta-band{padding:32px 22px;border-radius:20px}
  .cta-band h2{font-size:23px}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn{width:100%}
  .site-footer{margin-top:56px}
  .footer-grid{padding:52px 0 36px}
}
@media (max-width:520px){
  .hero h1{font-size:30px}
  .trustbar-row{grid-template-columns:1fr}
  .trust-item{border-left:0;padding:0}
  .story-meta{gap:10px}
  .card-body{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: category1 */
:root{
  --brand:#123A63;
  --brand-dark:#0E2F51;
  --brand-light:#E7EEF6;
  --accent:#17A398;
  --accent-dark:#0F7C74;
  --accent-light:#E3F5F2;
  --gold:#E9A93C;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --text:#14202B;
  --muted:#56677A;
  --line:#E2E8F0;
  --danger:#D64545;
  --success:#2E9E6B;
  --r-card:16px;
  --r-btn:12px;
  --r-img:20px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(18,58,99,.06);
  --sh-2:0 10px 28px rgba(18,58,99,.12);
  --sh-3:0 6px 20px rgba(18,58,99,.10);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",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:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent)}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

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

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);background:var(--brand-dark)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn-onbrand{background:#fff;color:var(--brand)}
.btn-onbrand:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px)}
.btn-sm{min-height:42px;padding:0 20px;font-size:14px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  font-size:15px;
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
}
.text-link::after{content:"→";font-size:14px;transition:transform .18s ease}
.text-link:hover{color:var(--accent)}
.text-link:hover::after{transform:translateX(3px)}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-3)}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
  transition:min-height .2s ease;
}
.site-header.is-scrolled .header-inner{min-height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(150deg,var(--brand),#1c5285);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;
}
.logo-mark svg{width:20px;height:20px;display:block}
.logo-text{font-size:17px;font-weight:700;color:var(--brand);letter-spacing:.01em}
.logo-text em{font-style:normal;color:var(--accent)}
.nav{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  padding:8px 10px;
  border-radius:var(--r-pill);
  transition:background-color .18s ease,color .18s ease;
}
.nav-link:hover{background:var(--brand-light);color:var(--brand)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:10px;right:10px;bottom:0;
  height:2px;
  background:var(--brand);
  border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(20,32,43,.42);
  opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:70;
}
body.nav-open .nav-backdrop{opacity:1;visibility:visible}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:22px 0 0;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li::after{content:"/";margin-left:8px;color:#A9B6C4}
.breadcrumb li:last-child::after{display:none}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--brand);font-weight:600}

/* ============ Hero ============ */
.hero{padding:30px 0 64px;position:relative;overflow:hidden}
.hero::before{
  content:"";
  position:absolute;
  top:-140px;right:-80px;
  width:520px;height:520px;
  background:radial-gradient(circle,rgba(23,163,152,.10) 0%,rgba(23,163,152,0) 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:5fr 6fr;
  gap:52px;
  align-items:center;
  position:relative;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--accent-dark);
  background:var(--accent-light);
  border-radius:var(--r-pill);
  padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold)}
.hero h1{
  margin-top:18px;
  font-size:clamp(30px,4vw,44px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
}
.hero-lead{
  margin-top:16px;
  font-size:17px;
  color:var(--muted);
  max-width:34em;
}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.hero-media{position:relative}
.hero-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--sh-2);
}
.hero-arc{
  position:absolute;
  left:-26px;bottom:-26px;
  width:150px;height:150px;
  border:1px solid rgba(18,58,99,.16);
  border-radius:50%;
  border-right-color:transparent;
  border-top-color:transparent;
  pointer-events:none;
}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-tight{padding:56px 0}
.section-head{max-width:720px;margin-bottom:36px}
.section h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.3;
  font-weight:600;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}
.bg-white{background:#fff}
.bg-soft{background:var(--bg)}

/* ============ 特性条 ============ */
.feature-stack{display:flex;flex-direction:column;gap:20px;max-width:980px}
.feature-row{
  display:flex;
  gap:22px;
  align-items:flex-start;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 28px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-row:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-light)}
.feature-icon{
  flex:0 0 48px;
  width:48px;height:48px;
  border-radius:14px;
  background:var(--brand-light);
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
}
.feature-icon svg{width:24px;height:24px}
.feature-row h3{font-size:20px;font-weight:600;margin-bottom:6px}
.feature-row p{color:var(--muted);font-size:16px}
.feature-index{
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:700;
  color:var(--accent);
  letter-spacing:.06em;
}

/* ============ 大图卡 ============ */
.card-grid-2{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:28px;
}
.card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover,.card:focus-within{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-light)}
.card-media{position:relative;background:var(--bg)}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.card-body{padding:26px 28px 28px;display:flex;flex-direction:column;gap:12px;flex:1}
.tag{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  font-size:13px;
  font-weight:600;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--brand-light);
  color:var(--brand);
}
.tag-accent{background:var(--accent-light);color:var(--accent-dark)}
.card h3{font-size:21px;font-weight:600;line-height:1.45}
.card p{color:var(--muted);font-size:16px}
.card-foot{margin-top:auto;padding-top:8px}

/* ============ 步骤列表 ============ */
.step-list{border-top:1px solid var(--line);max-width:940px}
.step-item{
  display:grid;
  grid-template-columns:88px 1fr;
  gap:24px;
  padding:28px 8px;
  border-bottom:1px solid var(--line);
  transition:background-color .18s ease;
}
.step-item:hover{background:#F5F7FA}
.step-num{
  font-size:34px;
  font-weight:700;
  line-height:1;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  padding-top:4px;
}
.step-item h3{font-size:19px;font-weight:600;margin-bottom:6px}
.step-item p{color:var(--muted);font-size:16px;max-width:40em}

/* ============ FAQ ============ */
.faq{max-width:900px;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:#CBD8E6}
.faq-item.is-open{border-color:var(--brand-light);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 26px;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--brand-light);
  position:relative;
  transition:transform .18s ease,background-color .18s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  background:var(--brand);
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px;transition:transform .18s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--accent-light)}
.faq-item.is-open .faq-icon::before,
.faq-item.is-open .faq-icon::after{background:var(--accent-dark)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-a{padding:0 24px 22px;color:var(--muted);font-size:16px}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--brand);
  color:#fff;
  border-radius:24px;
  padding:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;top:-80px;
  width:280px;height:280px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);font-weight:600;line-height:1.35;color:#fff;max-width:24em}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.78);font-size:16px;max-width:34em}
.cta-band .btn{position:relative;z-index:1;flex-shrink:0}

/* ============ 页脚 ============ */
.site-footer{
  background:#fff;
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:40px;
}
.footer-brand .logo-text{font-size:18px;display:inline-block;margin-bottom:14px}
.footer-desc{color:var(--muted);font-size:14px;line-height:1.75;max-width:26em}
.footer-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--brand)}
.footer-sub{display:flex;gap:10px;flex-wrap:wrap}
.footer-sub input{
  flex:1 1 150px;
  min-width:0;
  height:48px;
  padding:0 16px;
  font-size:15px;
  font-family:inherit;
  color:var(--text);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.footer-sub input::placeholder{color:#9AA9B8}
.footer-sub input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 2px rgba(18,58,99,.16);
}
.footer-sub input.is-error{border-color:var(--danger)}
.form-msg{font-size:13px;color:var(--muted);margin-top:10px;min-height:18px}
.form-msg.is-error{color:var(--danger)}
.form-msg.is-ok{color:var(--success)}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  justify-content:space-between;
  font-size:13px;
  color:var(--muted);
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1000px}
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  .container{max-width:100%;padding:0 24px}
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/9}
  .hero-arc{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(86vw,360px);
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:88px 20px 32px;
    transform:translateX(102%);
    transition:transform .22s ease;
    box-shadow:var(--sh-2);
    overflow-y:auto;
    z-index:75;
  }
  body.nav-open .nav{transform:translateX(0)}
  .nav-link{width:100%;padding:14px 12px;font-size:16px;border-radius:12px}
  .nav-link.is-active::after{left:12px;right:auto;width:26px;bottom:6px}
  body.nav-open{overflow:hidden}
  .nav-toggle{display:flex}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .container{padding:0 16px}
  .hero{padding:20px 0 48px}
  .hero h1{font-size:clamp(30px,8vw,34px)}
  .hero-actions .btn{width:100%}
  .header-cta{display:none}
  .card-grid-2{grid-template-columns:1fr;gap:20px}
  .step-item{grid-template-columns:60px 1fr;gap:16px;padding:22px 4px}
  .step-num{font-size:28px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 24px;border-radius:20px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .card-body{padding:20px}
  .feature-row{padding:20px;gap:16px}
  .feature-icon{flex-basis:44px;width:44px;height:44px}
  .faq-q{padding:16px 18px;font-size:16px}
  .faq-a{padding:0 18px 18px}
  .footer-sub input,.footer-sub .btn{width:100%;flex:1 1 100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --brand:#123A63;
  --brand-dark:#0E2F51;
  --brand-light:#E7EEF6;
  --accent:#17A398;
  --accent-dark:#0F8478;
  --accent-light:#E3F5F2;
  --gold:#E9A93C;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --text:#14202B;
  --text-2:#56677A;
  --border:#E2E8F0;
  --danger:#D64545;
  --success:#2E9E6B;
  --r-card:16px;
  --r-btn:12px;
  --r-img:20px;
  --sh-1:0 2px 8px rgba(18,58,99,.06);
  --sh-2:0 10px 28px rgba(18,58,99,.12);
  --sh-3:0 6px 20px rgba(18,58,99,.10);
  --container:1200px;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans 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;
}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;color:var(--text)}
p{margin:0}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent)}
ul,ol{margin:0;padding:0}
li{list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1240px}}

/* ========== 通用组件 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-accent:active{transform:translateY(0)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;
  border-radius:999px;font-size:13px;font-weight:500;
  background:var(--brand-light);color:var(--brand);
}
.chip-accent{background:var(--accent-light);color:var(--accent-dark)}
.chip-gold{background:#FDF3E2;color:#A9741B}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
  border-bottom:1px solid rgba(18,58,99,.28);padding-bottom:2px;
  transition:color .18s ease,border-color .18s ease;
}
.link-arrow:hover{color:var(--accent);border-color:var(--accent)}

/* ========== 顶部导航 ========== */
.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-3)}
.nav-bar{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px;
  height:72px;transition:height .2s ease;
}
.site-header.is-scrolled .nav-bar{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center}
.logo-text{font-size:19px;font-weight:700;color:var(--brand);letter-spacing:0;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--accent);font-size:16px;margin-left:2px}
.nav{display:flex;justify-content:center;align-items:center;gap:22px}
.nav-link{
  position:relative;display:inline-block;
  font-size:15px;color:var(--text);padding:7px 12px;border-radius:999px;
  transition:background .18s ease,color .18s ease;white-space:nowrap;
}
.nav-link:hover{background:var(--brand-light);color:var(--brand)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;justify-self:end}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);
  align-items:center;justify-content:center;background:#fff;
}
.nav-toggle:hover{background:var(--brand-light)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-overlay{
  display:none;position:fixed;inset:0;background:rgba(14,47,81,.36);z-index:65;
  opacity:0;transition:opacity .2s ease;
}
.nav-overlay.is-open{display:block;opacity:1}

@media (max-width:1023px){
  .nav-bar{grid-template-columns:auto auto;justify-content:space-between}
  .nav{
    position:fixed;top:0;right:0;bottom:0;z-index:70;
    width:min(84vw,360px);background:#fff;
    flex-direction:column;justify-content:flex-start;align-items:stretch;
    padding:88px 22px 28px;gap:4px;
    transform:translateX(100%);transition:transform .22s ease;
    box-shadow:var(--sh-2);overflow-y:auto;
  }
  .nav.is-open{transform:translateX(0)}
  .nav-link{padding:13px 14px;border-radius:12px;font-size:16px}
  .nav-link.is-active::after{left:14px;right:auto;width:22px;bottom:6px}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn{display:none}
  .nav-actions .btn-mobile{display:flex;width:100%;margin-top:14px}
}
.nav-mobile-cta{display:none}
@media (max-width:1023px){
  .nav-mobile-cta{display:flex;width:100%;margin-top:16px}
}

/* ========== 面包屑 + 文章头 ========== */
.article-hero{
  position:relative;background:#fff;border-bottom:1px solid var(--border);
  padding:32px 0 40px;overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;right:-120px;top:-160px;width:460px;height:460px;
  background:radial-gradient(circle,rgba(23,163,152,.10),rgba(23,163,152,0) 66%);
  pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;left:-60px;bottom:-180px;width:360px;height:360px;
  background:radial-gradient(circle,rgba(18,58,99,.07),rgba(18,58,99,0) 68%);
  pointer-events:none;
}
.breadcrumb{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#A9B6C4}
.breadcrumb .current{
  color:var(--text);max-width:min(520px,60vw);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-hero-inner{position:relative;z-index:1;max-width:860px}
.article-hero-inner .chip{margin-bottom:16px}
.article-title{
  font-size:44px;font-weight:700;line-height:1.25;letter-spacing:0;
  margin-bottom:20px;overflow-wrap:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:14px;color:var(--text-2);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--gold);display:inline-block}
.article-meta .m-cat{color:var(--brand);font-weight:600}
.article-meta .num{font-variant-numeric:tabular-nums}

/* ========== 正文 ========== */
.article-wrap{padding:48px 0 8px}
.article-panel{
  max-width:860px;margin:0 auto;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-img);
  box-shadow:var(--sh-1);padding:46px 48px 40px;
}
.article-body{max-width:760px;margin:0 auto;font-size:17px;line-height:1.85;color:var(--text);overflow-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:28px;font-weight:600;line-height:1.35;
  margin:2em 0 .8em;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;
  border-radius:3px;background:var(--accent);
}
.article-body h3{font-size:20px;font-weight:600;margin:1.6em 0 .7em}
.article-body h4{font-size:17px;font-weight:600;margin:1.4em 0 .6em}
.article-body strong{font-weight:600}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:22px}
.article-body ul li{position:relative;list-style:none;padding-left:18px;margin-bottom:.55em}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--accent);opacity:.85;
}
.article-body ul ul li::before{background:var(--brand);opacity:.5}
.article-body ol{counter-reset:art;list-style:none}
.article-body ol li{
  position:relative;counter-increment:art;padding-left:30px;margin-bottom:.6em;
}
.article-body ol li::before{
  content:counter(art,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-variant-numeric:tabular-nums;font-weight:600;color:var(--accent);font-size:15px;
}
.article-body blockquote{
  margin:1.6em 0;padding:20px 22px;border-left:3px solid var(--brand);
  background:var(--bg);border-radius:0 12px 12px 0;font-size:16px;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body figure{margin:1.8em 0}
.article-body figure img{border-radius:12px;box-shadow:var(--sh-1);width:100%}
.article-body figcaption{
  margin-top:10px;text-align:center;font-size:13px;color:var(--text-2);line-height:1.7;
}
.article-body img{border-radius:12px}
.article-body .table-scroll,.article-body .wp-block-table{overflow-x:auto;margin:1.6em 0;-webkit-overflow-scrolling:touch}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
.article-body thead th{
  background:var(--brand-light);color:var(--brand);font-weight:600;
  text-align:left;padding:12px 14px;white-space:nowrap;
}
.article-body td,.article-body th{border-bottom:1px solid var(--border);padding:12px 14px;vertical-align:top}
.article-body tbody tr:hover{background:var(--bg)}
.article-body hr{border:0;border-top:1px solid var(--border);margin:2.2em 0}
.article-body .lead{
  font-size:16px;font-weight:600;line-height:1.8;color:var(--text);
  background:var(--brand-light);border-radius:12px;padding:18px 20px;margin:0 0 1.4em;
}
.article-empty{
  text-align:center;padding:56px 24px;background:var(--bg);border-radius:var(--r-card);
  border:1px dashed var(--border);
}
.article-empty .ico{
  width:48px;height:48px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;
  border-radius:50%;background:var(--brand-light);color:var(--brand);
}
.article-empty h2{font-size:20px;margin-bottom:10px}
.article-empty p{color:var(--text-2);font-size:15px;margin-bottom:18px}

/* ========== 标签 / 文章导航 ========== */
.article-foot{max-width:860px;margin:0 auto;padding:28px 0 0}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-row .tag-label{font-size:13px;color:var(--text-2);margin-right:2px}
.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px;
}
.post-nav-item{
  display:flex;flex-direction:column;gap:6px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-1);color:var(--text);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-nav-item:hover{
  transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#C9D8E8;color:var(--text);
}
.post-nav-item.is-next{text-align:right;align-items:flex-end}
.post-nav-dir{font-size:13px;color:var(--accent-dark);font-weight:600}
.post-nav-text{font-size:16px;font-weight:600;color:var(--brand)}

/* ========== 相关推荐 ========== */
.related{padding:72px 0 0}
.sec-head{margin-bottom:28px}
.sec-head h2{font-size:30px;font-weight:600;margin-bottom:8px}
.sec-head p{font-size:15px;color:var(--text-2)}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;color:var(--text);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#C9D8E8;color:var(--text)}
.card-media{position:relative;aspect-ratio:4/3;background:var(--brand-light);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;font-weight:600;line-height:1.5;overflow-wrap:break-word}
.card-excerpt{
  font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2)}
.card-meta .num{font-variant-numeric:tabular-nums}

/* ========== CTA ========== */
.cta-band{padding:72px 0 88px}
.cta-box{
  background:linear-gradient(135deg,var(--brand) 0%,#17476F 55%,#125C6E 100%);
  border-radius:24px;padding:48px;display:grid;grid-template-columns:1.1fr 1fr;
  gap:36px;align-items:center;position:relative;overflow:hidden;
}
.cta-box::before{
  content:"";position:absolute;right:-80px;top:-110px;width:380px;height:380px;
  background:radial-gradient(circle,rgba(23,163,152,.35),rgba(23,163,152,0) 68%);
  pointer-events:none;
}
.cta-box h2{color:#fff;font-size:30px;font-weight:600;margin-bottom:12px;position:relative}
.cta-box p{color:rgba(255,255,255,.82);font-size:15px;line-height:1.8;position:relative}
.cta-form{position:relative;display:flex;flex-direction:column;gap:12px}
.cta-row{display:flex;gap:12px}
.cta-form input{
  flex:1;height:48px;padding:0 18px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.10);
  color:#fff;transition:border-color .18s ease,box-shadow .18s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.62)}
.cta-form input:focus{
  outline:none;border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.22);
}
.cta-note{font-size:13px;color:rgba(255,255,255,.66)}
.cta-msg{font-size:13px;color:#BFE9E3;min-height:18px}
.cta-msg.is-error{color:#FFD1D1}

/* ========== 页脚 ========== */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:64px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px}
.footer-brand .logo-text{font-size:18px}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.85;margin-top:14px;max-width:310px}
.footer-title{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--text-2);line-height:1.6}
.footer-links a:hover{color:var(--brand)}
.footer-sub{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.footer-sub input{
  height:48px;padding:0 16px;border:1px solid var(--border);border-radius:var(--r-btn);
  background:var(--bg);color:var(--text);transition:border-color .18s ease,box-shadow .18s ease;
}
.footer-sub input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,58,99,.12)}
.form-msg{font-size:13px;color:var(--text-2);margin-top:10px;min-height:18px}
.form-msg.is-error{color:var(--danger)}
.form-msg.is-ok{color:var(--success)}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--border);padding:20px 0 22px;font-size:13px;color:var(--text-2);
}
.footer-bottom a{color:var(--text-2);text-decoration:underline;text-underline-offset:3px}
.footer-bottom a:hover{color:var(--brand)}

/* ========== 响应式 ========== */
@media (max-width:1279px){
  :root{--sec:88px}
  .article-title{font-size:40px}
  .card-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .container{padding:0 20px}
  .article-title{font-size:34px}
  .article-hero{padding:26px 0 32px}
  .article-panel{padding:34px 28px 30px}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:24px}
  .cta-box{grid-template-columns:1fr;padding:36px;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .related{padding:56px 0 0}
  .sec-head h2{font-size:26px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .container{padding:0 16px}
  .nav-bar{height:64px}
  .logo-text{font-size:17px}
  .logo-text em{font-size:15px}
  .article-title{font-size:29px;line-height:1.32}
  .article-hero{padding:20px 0 26px}
  .breadcrumb .current{max-width:44vw}
  .article-panel{padding:24px 18px 22px;border-radius:16px}
  .article-body{font-size:16px;line-height:1.8}
  .article-body h2{font-size:21px;margin:1.7em 0 .7em}
  .article-body h3{font-size:18px}
  .article-body blockquote{padding:16px 16px}
  .post-nav{grid-template-columns:1fr;gap:12px}
  .post-nav-item.is-next{text-align:left;align-items:flex-start}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .cta-band{padding:56px 0 64px}
  .cta-box{padding:28px 22px;border-radius:20px}
  .cta-box h2{font-size:24px}
  .cta-row{flex-direction:column}
  .cta-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .sec-head h2{font-size:23px}
}
@media (max-width:480px){
  .article-title{font-size:26px}
  .article-panel{padding:20px 15px 18px}
  .article-body{font-size:15.5px}
  .article-meta{font-size:13px;gap:10px}
  .card-body{padding:18px}
  .cta-box{padding:24px 18px}
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root{
  --c-primary:#123A63;
  --c-primary-dark:#0E2F51;
  --c-primary-light:#E7EEF6;
  --c-accent:#17A398;
  --c-accent-light:#E3F5F2;
  --c-accent-deep:#0F7A72;
  --c-gold:#E9A93C;
  --c-bg:#F5F7FA;
  --c-card:#FFFFFF;
  --c-text:#14202B;
  --c-text-2:#56677A;
  --c-border:#E2E8F0;
  --c-error:#D64545;
  --c-success:#2E9E6B;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:12px;
  --radius-lg:20px;
  --radius-xl:24px;
  --shadow-1:0 2px 8px rgba(18,58,99,.06);
  --shadow-2:0 10px 28px rgba(18,58,99,.12);
  --shadow-nav:0 6px 20px rgba(18,58,99,.10);
  --container:1200px;
  --gap:24px;
  --font: "PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num: Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;}
svg{display:block;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
button:disabled{opacity:.5;cursor:not-allowed;}

/* ===== 容器 ===== */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){ .container{max-width:1240px;} }

/* ===== 通用按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  font-weight:600;
  font-size:15.5px;
  line-height:1;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  box-shadow:0 2px 8px rgba(18,58,99,.14);
}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(18,58,99,.20);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{
  background:var(--c-accent);
  color:#fff;
}
.btn-accent:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost{
  background:#fff;
  color:var(--c-primary);
  border:1px solid var(--c-primary);
}
.btn-ghost:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-light{
  background:#fff;
  color:var(--c-primary);
}
.btn-light:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-1px);}

/* 文字链 */
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  font-size:15px;
  color:var(--c-primary);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
  transition:color .18s ease;
}
.link-more:hover{color:var(--c-accent);}
.link-more::after{content:"›";font-size:17px;line-height:1;transition:transform .18s ease;}
.link-more:hover::after{transform:translateX(3px);}

/* 标签 */
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:999px;
  background:var(--c-primary-light);
  color:var(--c-primary);
  font-size:13px;
  line-height:1.6;
  font-weight:500;
}
.tag-green{background:var(--c-accent-light);color:var(--c-accent-deep);}

/* ===== 页头与导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-nav);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:76px;
  transition:height .2s ease;
}
.site-header.is-scrolled .header-inner{height:64px;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--c-primary);
}
.logo:hover{color:var(--c-primary-dark);}
.logo-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:var(--c-primary-light);
  color:var(--c-primary);
  flex-shrink:0;
}
.logo-text{
  font-size:18.5px;
  font-weight:700;
  color:var(--c-primary);
  letter-spacing:0;
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  font-family:var(--font-num);
  color:var(--c-accent);
  font-weight:700;
}
.nav{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  padding:8px 10px;
  font-size:15px;
  font-weight:500;
  color:var(--c-text);
  border-radius:999px;
  transition:background-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.nav-link:hover{background:var(--c-primary-light);color:var(--c-primary);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:10px;right:10px;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.header-cta{flex-shrink:0;}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--c-border);
  background:#fff;
  align-items:center;
  justify-content:center;
  color:var(--c-primary);
  transition:background-color .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--c-primary-light);border-color:var(--c-primary-light);}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:#fff;
  display:flex;
  flex-direction:column;
  padding:20px 24px 32px;
  opacity:0;
  visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-border);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;line-height:1;color:var(--c-primary);
  transition:background-color .18s ease;
}
.drawer-close:hover{background:var(--c-primary-light);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-link{
  padding:14px 12px;
  border-radius:12px;
  font-size:16.5px;
  font-weight:500;
  color:var(--c-text);
  transition:background-color .18s ease,color .18s ease;
}
.drawer-link:hover{background:var(--c-bg);color:var(--c-primary);}
.drawer-link.is-active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--c-border);}
.drawer-foot .btn{width:100%;}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:18px 0 0;
  font-size:13px;
  color:var(--c-text-2);
}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#B8C4D2;}
.breadcrumb .current{color:var(--c-primary);font-weight:600;}

/* ===== 页面首屏 ===== */
.page-hero{
  position:relative;
  background-image:
    linear-gradient(100deg,rgba(255,255,255,.965) 0%,rgba(255,255,255,.90) 48%,rgba(231,238,246,.72) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-border);
}
.page-hero::after{
  content:"";
  position:absolute;
  right:6%;
  top:-40px;
  width:260px;height:260px;
  border-radius:50%;
  border:1px solid rgba(18,58,99,.10);
  pointer-events:none;
}
.page-hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:56px;
  align-items:center;
  padding:52px 0 64px;
}
.page-hero h1{
  font-size:46px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:0;
  margin-bottom:18px;
}
.page-hero .lead{
  font-size:17px;
  color:var(--c-text-2);
  max-width:36em;
  margin-bottom:26px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-figure{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-2);
  background:var(--c-primary-light);
  aspect-ratio:16/11;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:14px 18px;
  font-size:13px;
  color:#fff;
  background:linear-gradient(180deg,rgba(18,58,99,0) 0%,rgba(18,58,99,.72) 100%);
}

/* ===== 通用板块 ===== */
.section{padding:96px 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:32px;
  font-weight:600;
  line-height:1.35;
  margin-bottom:14px;
}
.section-head p{color:var(--c-text-2);font-size:16.5px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--c-accent-deep);
  background:var(--c-accent-light);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:16px;
}

/* ===== 侧栏 + 编号清单 ===== */
.list-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.toc{
  position:sticky;
  top:104px;
  padding:22px 20px;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
}
.toc-title{
  font-size:13px;
  font-weight:700;
  color:var(--c-text-2);
  letter-spacing:.04em;
  margin-bottom:12px;
}
.toc-nav{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:block;
  padding:9px 10px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--c-text-2);
  line-height:1.55;
  transition:background-color .18s ease,color .18s ease;
}
.toc-link:hover{background:var(--c-bg);color:var(--c-primary);}
.toc-link.is-active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;}

.entry-list{border-top:1px solid var(--c-border);}
.entry{
  display:grid;
  grid-template-columns:96px minmax(0,1fr);
  gap:28px;
  padding:36px 0;
  border-bottom:1px solid var(--c-border);
  scroll-margin-top:110px;
}
.entry-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:40px;
  font-weight:700;
  line-height:1;
  color:var(--c-accent);
  opacity:.9;
  padding-top:4px;
}
.entry-body h3{
  font-size:21px;
  font-weight:600;
  margin-bottom:12px;
  line-height:1.45;
}
.entry-body p{
  color:var(--c-text-2);
  font-size:16.5px;
  max-width:40em;
  margin-bottom:14px;
}
.entry-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:14px;}

/* ===== 数据说明条 ===== */
.notes{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:48px;
}
.note{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.note:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--c-primary-light);}
.note-icon{
  width:42px;height:42px;
  border-radius:12px;
  background:var(--c-accent-light);
  color:var(--c-accent-deep);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.note h3{font-size:17.5px;font-weight:600;margin-bottom:8px;}
.note p{font-size:15px;color:var(--c-text-2);}

/* ===== 指标条 ===== */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.stat{
  padding:32px 26px;
  border-right:1px solid var(--c-border);
}
.stat:last-child{border-right:none;}
.stat-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:31px;
  font-weight:700;
  color:var(--c-accent);
  line-height:1.1;
  margin-bottom:8px;
}
.stat-label{font-size:14.5px;color:var(--c-text-2);}

/* ===== 推荐小卡 ===== */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--c-primary-light);}
.card-media{aspect-ratio:4/3;background:var(--c-primary-light);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;font-weight:600;line-height:1.5;}
.card-body p{font-size:14.8px;color:var(--c-text-2);}
.card-body .link-more{margin-top:auto;}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:#CFDAE6;}
.faq-item.is-open{box-shadow:var(--shadow-1);border-color:var(--c-primary-light);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 24px;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  color:var(--c-text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  position:relative;
  width:20px;height:20px;
  flex-shrink:0;
  transition:transform .18s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;transition:opacity .18s ease;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  display:none;
  padding:0 24px 22px;
  font-size:15.5px;
  color:var(--c-text-2);
  max-width:46em;
}
.faq-item.is-open .faq-a{display:block;}

/* ===== CTA 区 ===== */
.cta-band{
  background:linear-gradient(135deg,var(--c-primary) 0%,#17497A 100%);
  border-radius:var(--radius-xl);
  padding:56px 56px;
  display:grid;
  grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);
  gap:40px;
  align-items:center;
  color:#fff;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;bottom:-80px;
  width:280px;height:280px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.18);
}
.cta-band h2{font-size:29px;font-weight:600;line-height:1.4;margin-bottom:12px;}
.cta-band p{font-size:16px;color:rgba(255,255,255,.82);max-width:36em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;position:relative;z-index:2;}

/* ===== 页脚 ===== */
.site-footer{
  background:#fff;
  border-top:1px solid var(--c-border);
  padding:64px 0 28px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand .logo-text{display:inline-block;margin-bottom:14px;font-size:17px;}
.footer-desc{font-size:14px;color:var(--c-text-2);max-width:24em;}
.footer-title{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--c-text);}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:14px;
  color:var(--c-text-2);
  transition:color .18s ease;
}
.footer-links a:hover{color:var(--c-primary);}
.footer-sub{display:flex;gap:10px;margin-bottom:10px;}
.footer-sub input{
  flex:1;
  min-width:0;
  height:46px;
  padding:0 14px;
  border:1px solid var(--c-border);
  border-radius:var(--radius-btn);
  background:#fff;
  color:var(--c-text);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.footer-sub input::placeholder{color:#93A2B4;}
.footer-sub input:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 2px rgba(18,58,99,.16);
}
.form-msg{font-size:13px;color:var(--c-text-2);min-height:18px;}
.form-msg.is-error{color:var(--c-error);}
.form-msg.is-ok{color:var(--c-success);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  padding-top:22px;
  border-top:1px solid var(--c-border);
  font-size:13.5px;
  color:var(--c-text-2);
}
.footer-bottom a{color:var(--c-text-2);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom a:hover{color:var(--c-primary);}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .nav{gap:16px;}
  .nav-link{font-size:14.5px;padding:8px 8px;}
}
@media (max-width:1023px){
  .nav{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{gap:16px;}
  .page-hero-inner{grid-template-columns:1fr;gap:36px;padding:40px 0 56px;}
  .page-hero h1{font-size:38px;}
  .list-layout{grid-template-columns:1fr;gap:28px;}
  .toc{
    position:static;
    padding:16px;
  }
  .toc-nav{
    flex-direction:row;
    overflow-x:auto;
    gap:8px;
    padding-bottom:4px;
    -webkit-overflow-scrolling:touch;
  }
  .toc-link{white-space:nowrap;background:var(--c-bg);font-size:14px;}
  .notes{grid-template-columns:1fr 1fr;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat:nth-child(2){border-right:none;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--c-border);}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .page-hero h1{font-size:31px;}
  .page-hero .lead{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .section-head h2{font-size:25px;}
  .entry{grid-template-columns:1fr;gap:14px;padding:28px 0;}
  .entry-num{font-size:32px;}
  .notes{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;}
  .stat{border-right:none;border-bottom:1px solid var(--c-border);}
  .stat:last-child{border-bottom:none;}
  .cta-band h2{font-size:24px;}
  .cta-band{padding:32px 22px;border-radius:20px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-sub{flex-direction:column;}
  .footer-sub .btn{width:100%;}
  .site-footer{margin-top:56px;padding-top:48px;}
}
@media (max-width:480px){
  .page-hero h1{font-size:29px;}
  .entry-body p{font-size:15.5px;}
  .card-body{padding:20px;}
  .note{padding:20px;}
  .stat{padding:24px 20px;}
  .stat-num{font-size:27px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category3 */
:root{
  --brand:#123A63;
  --brand-dark:#0E2F51;
  --brand-light:#E7EEF6;
  --accent:#17A398;
  --accent-dark:#12897F;
  --accent-light:#E3F5F2;
  --accent-soft:#8FE3DA;
  --gold:#E9A93C;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --text:#14202B;
  --muted:#56677A;
  --border:#E2E8F0;
  --danger:#D64545;
  --success:#2E9E6B;
  --r-card:16px;
  --r-btn:12px;
  --r-img:20px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(18,58,99,.06);
  --sh-2:0 10px 28px rgba(18,58,99,.12);
  --sh-3:0 6px 20px rgba(18,58,99,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-light);color:var(--brand-dark);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1240px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
}

/* ---------- Header / Nav ---------- */
.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-3);}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:76px;
  transition:height .2s ease;
}
.site-header.is-scrolled .header-inner{height:64px;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--brand);
}
.logo:hover{color:var(--brand-dark);}
.logo-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:var(--brand-light);
  color:var(--accent);
}
.logo-mark svg{width:20px;height:20px;display:block;}
.logo-text{
  font-size:19px;
  font-weight:700;
  letter-spacing:0;
  color:var(--brand);
  white-space:nowrap;
}
.logo-text em{font-style:normal;color:var(--accent);}
.nav{
  display:flex;
  align-items:center;
  gap:24px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  padding:8px 10px;
  border-radius:var(--r-pill);
  transition:background-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:10px;right:10px;bottom:0;
  height:2px;
  border-radius:2px;
  background:transparent;
  transition:background-color .18s ease;
}
.nav-link:hover{background:var(--brand-light);color:var(--brand);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{background:var(--brand);}
.header-cta{flex-shrink:0;height:44px;padding:0 20px;font-size:15px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--border);
  background:#fff;
  border-radius:var(--r-btn);
  color:var(--brand);
  cursor:pointer;
}
.nav-toggle:hover{background:var(--brand-light);}
.nav-toggle:active{background:var(--brand-light);color:var(--brand-dark);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:16px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  text-align:center;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  border-bottom:1px solid transparent;
  text-underline-offset:3px;
}
.link-arrow:hover{color:var(--accent);border-bottom-color:var(--accent);}
.link-arrow::after{content:"→";font-size:14px;transition:transform .18s ease;}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- Badges / Tags ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--brand-light);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  line-height:1.6;
}
.badge-accent{background:var(--accent-light);color:#0F7C73;}
.badge-gold{background:#FDF3E1;color:#9A6B12;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag-row--center{justify-content:center;}

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:22px 0 0;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#B7C3D2;}
.breadcrumb [aria-current="page"]{color:var(--brand);font-weight:600;}

/* ---------- Section base ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--accent);
  letter-spacing:0;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:18px;height:1px;
  background:var(--accent);
  display:inline-block;
}
h1{font-size:clamp(30px,3.6vw,48px);line-height:1.25;font-weight:700;}
h2{font-size:clamp(24px,2.4vw,32px);line-height:1.3;font-weight:600;}
h3{font-size:21px;line-height:1.45;font-weight:600;}
.section-head p{margin-top:16px;color:var(--muted);font-size:17px;}

/* ---------- Hero ---------- */
.hero{padding-bottom:8px;}
.hero-visual{
  position:relative;
  margin-top:26px;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--brand-light);
  box-shadow:var(--sh-1);
}
.hero-visual img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:21/9;
}
.hero-copy{
  max-width:760px;
  margin:44px auto 0;
  text-align:center;
}
.hero-copy h1{letter-spacing:0;}
.hero-lead{
  margin-top:18px;
  font-size:18px;
  line-height:1.85;
  color:var(--muted);
}
.hero-actions{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.hero-tags{margin-top:26px;}
.hero-visual::after{
  content:"";
  position:absolute;
  inset:auto auto -1px -1px;
  width:180px;height:90px;
  border-top:1px solid rgba(18,58,99,.10);
  border-right:1px solid rgba(18,58,99,.10);
  border-top-right-radius:90px;
  pointer-events:none;
}

/* ---------- Flow rows ---------- */
.flow-list{border-top:1px solid var(--border);}
.flow-item{
  display:grid;
  grid-template-columns:110px 1fr;
  gap:28px;
  padding:30px 0;
  border-bottom:1px solid var(--border);
  align-items:start;
}
.flow-index{
  font-size:34px;
  font-weight:700;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.flow-item h3{margin-bottom:8px;}
.flow-item p{color:var(--muted);font-size:16px;max-width:66ch;}

/* ---------- Zigzag ---------- */
.zigzag{display:flex;flex-direction:column;gap:72px;}
.zigzag-item{
  display:grid;
  grid-template-columns:46% 54%;
  gap:48px;
  align-items:center;
}
.zigzag-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--brand-light);
  box-shadow:var(--sh-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.zigzag-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.zigzag-item:hover .zigzag-media{box-shadow:var(--sh-2);transform:translateY(-4px);}
.zigzag-body h3{margin:14px 0 12px;}
.zigzag-body p{color:var(--muted);font-size:16.5px;margin-bottom:18px;max-width:54ch;}
.zigzag-item.is-reverse .zigzag-media{order:2;}
.zigzag-item.is-reverse .zigzag-body{order:1;}

/* ---------- Spec rows ---------- */
.spec-panel{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.spec-head,.spec-row{
  display:grid;
  grid-template-columns:220px 1fr;
  gap:24px;
  padding:18px 28px;
}
.spec-head{
  background:var(--brand-light);
  color:var(--brand);
  font-size:14px;
  font-weight:600;
}
.spec-row{border-top:1px solid var(--border);transition:background-color .18s ease;}
.spec-row:hover{background:var(--bg);}
.spec-row dt{font-weight:600;font-size:16px;}
.spec-row dd{margin:0;color:var(--muted);font-size:16px;}
.spec-row dd span{color:var(--accent);font-weight:600;font-variant-numeric:tabular-nums;}

/* ---------- Stat + CTA band ---------- */
.band{
  position:relative;
  overflow:hidden;
  background:var(--brand);
  border-radius:24px;
  padding:48px;
  color:#fff;
}
.band::before{
  content:"";
  position:absolute;
  width:320px;height:320px;
  right:-120px;top:-140px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.10),rgba(255,255,255,0) 70%);
  pointer-events:none;
}
.band-stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-bottom:1px solid rgba(255,255,255,.18);
  padding-bottom:32px;
}
.stat{padding-right:20px;}
.stat + .stat{border-left:1px solid rgba(255,255,255,.18);padding-left:28px;}
.stat-num{
  font-size:30px;
  font-weight:700;
  color:var(--accent-soft);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-label{margin-top:6px;font-size:14px;color:rgba(255,255,255,.78);}
.band-cta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding-top:32px;
}
.band-cta h2{color:#fff;max-width:22ch;}
.band-cta p{margin-top:10px;color:rgba(255,255,255,.78);font-size:16px;max-width:52ch;}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:14px;max-width:880px;margin:0 auto;}
.faq-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:var(--brand-light);}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 24px;
  background:none;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  border-radius:var(--r-card);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex-shrink:0;
  width:26px;height:26px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--brand-light);
  color:var(--brand);
  font-size:16px;
  font-weight:700;
  transition:transform .18s ease,background-color .18s ease,color .18s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--accent-light);color:#0F7C73;}
.faq-a{
  display:none;
  padding:0 24px 22px;
  color:var(--muted);
  font-size:15.5px;
  max-width:70ch;
}
.faq-item.is-open .faq-a{display:block;}

/* ---------- Footnote / back links ---------- */
.back-links{
  display:flex;
  flex-wrap:wrap;
  gap:24px;
  justify-content:center;
  margin-top:36px;
}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:96px;
  background:#fff;
  border-top:1px solid var(--border);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand .logo-text{font-size:20px;}
.footer-desc{
  margin-top:14px;
  font-size:14px;
  color:var(--muted);
  max-width:34ch;
  line-height:1.75;
}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:14px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--muted);}
.footer-links a:hover{color:var(--brand);}
.footer-sub{display:flex;gap:10px;margin-top:4px;}
.footer-sub input{
  flex:1;
  min-width:0;
  height:48px;
  padding:0 14px;
  border:1px solid var(--border);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--text);
  font-size:15px;
  font-family:inherit;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.footer-sub input::placeholder{color:#93A2B4;}
.footer-sub input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 2px var(--brand-light);
}
.footer-sub input.is-error{border-color:var(--danger);box-shadow:0 0 0 2px rgba(214,69,69,.14);}
.footer-sub .btn{padding:0 18px;font-size:15px;flex-shrink:0;}
.form-msg{margin-top:10px;font-size:13px;color:var(--muted);min-height:18px;}
.form-msg.is-error{color:var(--danger);}
.form-msg.is-ok{color:var(--success);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--muted);
}
.footer-bottom a{color:var(--muted);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- Mobile drawer ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:#fff;
  display:flex;
  flex-direction:column;
  padding:20px 20px 28px;
  opacity:0;
  visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--border);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--brand);
  font-size:20px;
  cursor:pointer;
}
.drawer-close:hover{background:var(--brand-light);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:28px;overflow-y:auto;}
.drawer-nav a{
  padding:15px 12px;
  border-radius:var(--r-btn);
  font-size:16px;
  color:var(--text);
  border-bottom:1px solid var(--border);
}
.drawer-nav a:hover{background:var(--brand-light);color:var(--brand);}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;background:var(--brand-light);}
.drawer-foot{margin-top:auto;padding-top:20px;}
.drawer-foot .btn{width:100%;}
body.is-locked{overflow:hidden;}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .container{max-width:100%;}
  .nav,.header-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .zigzag-item{grid-template-columns:1fr;gap:26px;}
  .zigzag-item.is-reverse .zigzag-media{order:0;}
  .zigzag-item.is-reverse .zigzag-body{order:1;}
  .zigzag-media img{aspect-ratio:16/9;}
  .band-stats{grid-template-columns:repeat(2,1fr);}
  .stat{padding:18px 0;}
  .stat + .stat{border-left:0;padding-left:0;}
  .stat:nth-child(even){border-left:1px solid rgba(255,255,255,.18);padding-left:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  h1{font-size:clamp(30px,7vw,34px);}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .hero-visual img{aspect-ratio:4/3;}
  .hero-copy{margin-top:30px;}
  .hero-lead{font-size:16.5px;}
  .hero-actions .btn{width:100%;}
  .flow-item{grid-template-columns:1fr;gap:10px;padding:24px 0;}
  .flow-index{font-size:26px;}
  .spec-head,.spec-row{grid-template-columns:1fr;gap:6px;padding:16px 20px;}
  .spec-head span:last-child{display:none;}
  .band{padding:32px 22px;border-radius:20px;}
  .band-stats{grid-template-columns:1fr 1fr;padding-bottom:24px;}
  .stat-num{font-size:26px;}
  .band-cta{flex-direction:column;align-items:flex-start;padding-top:26px;}
  .band-cta .btn{width:100%;}
  .faq-q{padding:18px 18px;font-size:16px;}
  .faq-a{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .site-footer{padding:48px 0 24px;margin-top:64px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .spec-head,.spec-row{padding:14px 16px;}
  .band-stats{grid-template-columns:1fr;}
  .stat:nth-child(even){border-left:0;padding-left:0;}
  .footer-sub{flex-direction:column;}
  .footer-sub .btn{width:100%;}
  .logo-text{font-size:17px;}
}

/* roulang page: category5 */
:root{
  --brand:#123A63;
  --brand-dark:#0E2F51;
  --brand-light:#E7EEF6;
  --teal:#17A398;
  --teal-light:#E3F5F2;
  --gold:#E9A93C;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --text:#14202B;
  --muted:#56677A;
  --line:#E2E8F0;
  --error:#D64545;
  --ok:#2E9E6B;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --sh1:0 2px 8px rgba(18,58,99,.06);
  --sh2:0 10px 28px rgba(18,58,99,.12);
  --sh3:0 6px 20px rgba(18,58,99,.10);
  --container:1200px;
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,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}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--teal)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.3}
h1{font-size:46px;font-weight:700;line-height:1.25}
h2{font-size:32px;font-weight:600}
h3{font-size:21px;font-weight:600}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){:root{--container:1240px}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,padding .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh3);border-bottom-color:transparent}
.header-inner{display:flex;align-items:center;gap:28px;height:76px;transition:height .2s ease}
.site-header.is-scrolled .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--brand);letter-spacing:0}
.logo:hover{color:var(--brand)}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand) 0%,#1c5285 100%);
  display:inline-flex;align-items:center;justify-content:center;
}
.logo-mark svg{width:19px;height:19px}
.logo-text{white-space:nowrap}
.logo-text em{font-style:normal;color:var(--teal)}
.nav{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;color:var(--muted);padding:8px 12px;border-radius:var(--radius-pill);
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-light)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;background:var(--brand);
}
.header-cta{margin-left:8px}
.burger{
  display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:var(--radius-sm);align-items:center;justify-content:center;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);border-radius:2px;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}

.drawer{
  position:fixed;inset:0;z-index:90;background:#fff;display:none;flex-direction:column;
  padding:20px 20px 28px;
}
.drawer.is-open{display:flex;animation:drawerIn .2s ease}
@keyframes drawerIn{from{opacity:0}to{opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;
  font-size:20px;line-height:1;color:var(--brand);cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  font-size:17px;color:var(--text);padding:14px 12px;border-radius:var(--radius-sm);
}
.drawer-nav a:hover{background:var(--brand-light);color:var(--brand)}
.drawer-nav a.is-active{background:var(--brand-light);color:var(--brand);font-weight:600}
.drawer-foot{margin-top:auto}
body.drawer-open{overflow:hidden}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--brand);border-color:#C7D6E6}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand)}
.btn-accent{background:var(--teal);color:#fff}
.btn-accent:hover{background:#12897f;color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px}
.link-arrow{font-weight:600;color:var(--brand);border-bottom:1px solid rgba(18,58,99,.35);padding-bottom:2px}
.link-arrow:hover{color:var(--teal);border-bottom-color:var(--teal)}

/* ---------- Hero (问答/知识型，居中窄栏) ---------- */
.hero{
  position:relative;overflow:hidden;background:#fff;
  border-bottom:1px solid var(--line);
  padding:84px 0 72px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 12% 22%, rgba(18,58,99,.08) 0 2px, transparent 3px),
    radial-gradient(circle at 78% 14%, rgba(23,163,152,.09) 0 2px, transparent 3px),
    radial-gradient(circle at 62% 76%, rgba(18,58,99,.06) 0 2px, transparent 3px),
    radial-gradient(circle at 30% 88%, rgba(233,169,60,.10) 0 2px, transparent 3px),
    linear-gradient(180deg,#F8FAFD 0%,#FFFFFF 100%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:460px;height:460px;border-radius:50%;
  border:1px solid rgba(18,58,99,.10);pointer-events:none;
}
.hero-inner{position:relative;z-index:1;max-width:760px;margin:0 auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand);background:var(--brand-light);
  padding:6px 14px;border-radius:var(--radius-pill);margin-bottom:22px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:inline-block}
.hero h1{font-size:44px}
.hero h1 span{display:block;margin-top:10px;font-size:20px;font-weight:500;color:var(--muted);line-height:1.6}
.hero-lead{max-width:680px;margin:26px auto 0;color:var(--muted);font-size:17px}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:26px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{margin:0 8px;color:#B6C2CF}

/* ---------- Sections ---------- */
.section{padding:var(--section-y) 0}
.section-head{max-width:680px;margin-bottom:36px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- 速览条 ---------- */
.facts{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:26px 0;
}
.fact{padding:0 24px;border-left:1px solid var(--line)}
.fact:first-child{border-left:none;padding-left:0}
.fact-num{
  font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;color:var(--teal);line-height:1.2;
}
.fact-num small{font-size:15px;font-weight:600;margin-left:2px;color:var(--teal)}
.fact p{margin:6px 0 0;font-size:14px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:52px}
.faq-group:last-child{margin-bottom:0}
.faq-group-title{
  display:flex;align-items:center;gap:12px;font-size:14px;font-weight:600;color:var(--brand);
  margin-bottom:20px;
}
.faq-group-title span.num{
  font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:14px;color:var(--teal);border:1px solid rgba(23,163,152,.35);
  width:28px;height:28px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--sh1);transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:#C7D6E6}
.faq-item.is-open{border-color:rgba(18,58,99,.28);box-shadow:var(--sh2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:0;text-align:left;cursor:pointer;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);position:relative;transition:transform .18s ease,background .18s ease,border-color .18s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;width:11px;height:2px;background:var(--brand);
  border-radius:2px;transform:translate(-50%,-50%);
}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);transition:transform .18s ease}
.faq-item.is-open .faq-icon{background:var(--brand-light);border-color:rgba(18,58,99,.25)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(0deg)}
.faq-a{padding:0 24px 22px;color:var(--muted);font-size:15.5px;line-height:1.85;max-width:900px}
.faq-a p{margin:0 0 .9em}
.faq-a p:last-child{margin-bottom:0}
.faq-a strong{color:var(--text);font-weight:600}

/* ---------- 引用过渡块 ---------- */
.quote-band{
  background:var(--brand-light);border-radius:var(--radius-lg);
  padding:44px 48px;position:relative;overflow:hidden;
}
.quote-band::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:240px;height:240px;border-radius:50%;
  border:1px solid rgba(18,58,99,.12);
}
.quote-band blockquote{
  margin:0;max-width:840px;font-size:19px;line-height:1.75;color:var(--brand-dark);font-weight:500;
}
.quote-band cite{display:block;margin-top:16px;font-size:14px;font-style:normal;color:var(--muted)}

/* ---------- 推荐小卡 ---------- */
.rec-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.rec-card{
  display:flex;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--sh1);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:rgba(18,58,99,.22)}
.rec-media{flex:0 0 42%;aspect-ratio:4/3;background:var(--brand-light);overflow:hidden}
.rec-media img{width:100%;height:100%;object-fit:cover}
.rec-body{padding:20px 22px;display:flex;flex-direction:column;gap:8px}
.rec-body h3{font-size:18px}
.rec-body p{margin:0;font-size:14px;color:var(--muted);line-height:1.7}
.tag{
  display:inline-flex;align-items:center;font-size:13px;padding:4px 12px;border-radius:var(--radius-pill);
  background:var(--brand-light);color:var(--brand);width:max-content;
}
.tag-teal{background:var(--teal-light);color:#0E7A72}
.back-links{display:flex;gap:22px;flex-wrap:wrap;margin-top:32px;font-size:15px;align-items:center}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand);border-radius:24px;padding:52px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-80px;top:-100px;width:280px;height:280px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.78);font-size:15.5px;max-width:520px;margin:0}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}
.cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}

/* ---------- 订阅表单 ---------- */
.sub-form{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.sub-form input{
  flex:1 1 260px;height:48px;padding:0 16px;font-size:15px;color:var(--text);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.sub-form input::placeholder{color:#93A2B2}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,58,99,.14)}
.sub-form input[aria-invalid="true"]{border-color:var(--error)}
.form-msg{font-size:13px;margin:10px 0 0;min-height:18px;color:var(--muted)}
.form-msg.err{color:var(--error)}
.form-msg.ok{color:var(--ok)}

/* ---------- Footer ---------- */
.site-footer{background:#F5F7FA;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand .logo-text{font-size:19px;font-weight:700;color:var(--brand);display:block;margin-bottom:14px}
.footer-brand .logo-text em{font-style:normal;color:var(--teal)}
.footer-desc{font-size:14px;color:var(--muted);line-height:1.8;max-width:280px}
.footer-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--brand)}
.footer-sub{display:flex;gap:10px;flex-wrap:wrap}
.footer-sub input{
  flex:1 1 170px;height:46px;padding:0 14px;font-size:14px;border:1px solid var(--line);
  border-radius:var(--radius-sm);background:#fff;color:var(--text);
}
.footer-sub input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,58,99,.14)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .nav{gap:14px}
  .nav-link{padding:8px 10px;font-size:14px}
}
@media (max-width:1023px){
  h1{font-size:36px}
  .hero h1{font-size:36px}
  h2{font-size:27px}
  .nav,.header-cta{display:none}
  .burger{display:flex}
  .header-inner{height:68px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .facts{grid-template-columns:1fr 1fr;gap:22px 0;padding:22px 0}
  .fact:nth-child(3){border-left:none;padding-left:0}
  .rec-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  :root{--section-y:56px}
  .container{padding:0 16px}
  body{font-size:16px;line-height:1.78}
  h1{font-size:32px}
  .hero{padding:56px 0 48px}
  .hero h1{font-size:31px}
  .hero h1 span{font-size:17px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  h2{font-size:24px}
  h3{font-size:19px}
  .section-head{margin-bottom:28px}
  .faq-q{padding:16px 18px;font-size:16px;gap:12px}
  .faq-a{padding:0 18px 18px;font-size:15px}
  .quote-band{padding:30px 22px}
  .quote-band blockquote{font-size:17px}
  .rec-card{flex-direction:column}
  .rec-media{flex:none;width:100%}
  .cta-band{padding:32px 22px}
  .cta-band h2{font-size:23px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .facts{grid-template-columns:1fr}
  .fact{border-left:none;padding:0 0 0 14px;border-left:2px solid var(--teal-light)}
  .fact:first-child{padding-left:14px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .hero h1{font-size:28px}
  .faq-q{font-size:15.5px}
  .quote-band{padding:26px 18px}
  .cta-band{padding:26px 18px}
  .sub-form .btn,.footer-sub .btn{width:100%}
  .hero-actions{flex-direction:column}
}

/* roulang page: category4 */
:root{
  --brand:#123A63;--brand-dark:#0E2F51;--brand-soft:#E7EEF6;
  --accent:#17A398;--accent-deep:#0F7A72;--accent-soft:#E3F5F2;
  --gold:#E9A93C;
  --bg:#F5F7FA;--card:#FFFFFF;
  --text:#14202B;--muted:#56677A;--line:#E2E8F0;
  --error:#D64545;--success:#2E9E6B;
  --r-card:16px;--r-btn:12px;--r-img:12px;--r-img-lg:20px;
  --sh-1:0 2px 8px rgba(18,58,99,.06);
  --sh-2:0 10px 28px rgba(18,58,99,.12);
  --sh-3:0 6px 20px rgba(18,58,99,.10);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;line-height:1.8;
}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;letter-spacing:0}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
body.no-scroll{overflow:hidden}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1240px}}
@media (max-width:767px){.container{padding:0 16px}}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:var(--sh-3)}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--header-h);transition:height .2s ease}
.site-header.is-scrolled .header-inner{height:64px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);display:grid;place-items:center;flex-shrink:0}
.logo-text{font-size:19px;font-weight:700;color:var(--brand);white-space:nowrap}
.logo-text em{font-style:normal;color:var(--accent)}
.nav{display:flex;align-items:center;gap:2px;margin:0 auto}
.nav-link{position:relative;padding:8px 12px;border-radius:999px;font-size:15px;color:var(--muted);transition:background .18s ease,color .18s ease}
.nav-link:hover{background:var(--brand-soft);color:var(--brand)}
.nav-link:active{background:#D8E4F0}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;background:var(--brand)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;align-items:center;justify-content:center;cursor:pointer;transition:.18s}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{position:fixed;inset:0;z-index:80;background:#fff;padding:24px 24px 32px;display:flex;flex-direction:column;transform:translateX(102%);transition:transform .2s ease;overflow-y:auto;visibility:hidden}
.mobile-drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-close{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:20px;line-height:1;cursor:pointer}
.drawer-close:hover{background:var(--brand-soft);border-color:var(--brand)}
.drawer-links{display:flex;flex-direction:column;gap:4px}
.drawer-links a{padding:14px 16px;border-radius:12px;font-size:16px;color:var(--text);border:1px solid transparent}
.drawer-links a:hover{background:var(--brand-soft);border-color:#D8E4F0}
.drawer-links a.is-active{color:var(--brand);font-weight:600;background:var(--brand-soft)}
.drawer-cta{margin-top:auto;padding-top:28px}
.drawer-cta .btn{width:100%}
@media (max-width:1180px){
  .nav-link{font-size:14px;padding:8px 9px}
  .logo-text{font-size:17px}
}
@media (max-width:1023px){
  .nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:flex}
  .header-inner{justify-content:space-between}
}

/* ---------- 按钮 / 标签 / 文字链 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 26px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15.5px;font-weight:600;cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;text-align:center}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(18,58,99,.18)}
.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);transform:translateY(-1px)}
.btn-ghost:active{background:#D8E4F0;transform:none}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn-accent:active{transform:none}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;line-height:1.6}
.tag-accent{background:var(--accent-soft);color:var(--accent-deep)}
.link{color:var(--brand);font-weight:600;border-bottom:1px solid rgba(18,58,99,.35);padding-bottom:1px;transition:color .18s ease,border-color .18s ease}
.link:hover{color:var(--accent);border-color:var(--accent)}
.link::after{content:" →";font-weight:400}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-title{font-size:32px;font-weight:600;margin-bottom:12px}
.section-sub{color:var(--muted);font-size:16.5px;margin:0}
.rule{height:1px;background:var(--line);border:0;margin:0}
@media (max-width:1023px){
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .section-title{font-size:27px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .section-title{font-size:24px}
  .section-head{margin-bottom:26px}
}

/* ---------- 面包屑 + 标题条 ---------- */
.crumb{padding:22px 0 0;font-size:13px;color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{margin:0 8px;color:#A9B6C4}
.hero-bar{padding:18px 0 34px;border-bottom:1px solid var(--brand)}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:end}
.hero-title{font-size:clamp(30px,4vw,46px);font-weight:700;line-height:1.25;color:var(--brand);margin-bottom:14px}
.hero-title .hl{color:var(--accent)}
.hero-foot{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.hero-lead{color:var(--muted);font-size:17px;border-left:3px solid var(--accent-soft);padding-left:18px}
.hero-lead strong{color:var(--text);font-weight:600}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:20px}
  .hero-lead{border-left:0;border-top:2px solid var(--accent-soft);padding:16px 0 0}
}

/* ---------- 指标卡 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:26px 24px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#C9D8E8}
.metric-value{font-size:34px;font-weight:700;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:4px}
.metric-value small{font-size:14px;font-weight:600;color:var(--accent)}
.metric-name{font-size:15.5px;font-weight:600;margin:12px 0 6px;color:var(--text)}
.metric-note{font-size:14px;color:var(--muted);line-height:1.7;margin:0}
@media (max-width:1023px){.metric-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.metric-grid{grid-template-columns:1fr}}

/* ---------- 宽幅图带 ---------- */
.wide-band{position:relative;border-radius:var(--r-img-lg);overflow:hidden;box-shadow:var(--sh-1);background:var(--brand-soft)}
.wide-band img{width:100%;height:340px;object-fit:cover}
.wide-band__caption{position:absolute;left:0;right:0;bottom:0;padding:28px 32px;background:linear-gradient(180deg,rgba(18,58,99,0) 0%,rgba(18,58,99,.82) 100%);color:#fff}
.wide-band__caption h2{font-size:23px;margin-bottom:8px}
.wide-band__caption p{font-size:15px;color:rgba(255,255,255,.86);margin:0;max-width:620px}
@media (max-width:767px){.wide-band img{height:240px}.wide-band__caption{padding:20px}}

/* ---------- 数据表 / 对比区 ---------- */
.table-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.data-table{width:100%}
.data-table th{background:var(--brand-soft);color:var(--brand);text-align:left;font-size:13.5px;font-weight:600;padding:15px 18px;white-space:nowrap}
.data-table td{padding:18px;border-top:1px solid var(--line);font-size:15.5px;color:var(--muted);vertical-align:top;line-height:1.7}
.data-table tbody tr{transition:background .18s ease}
.data-table tbody tr:hover{background:var(--bg)}
.data-table td .cell-title{display:block;color:var(--text);font-weight:600;font-size:16px;margin-bottom:4px}
.data-table td .link{font-size:14.5px}
.data-table col.c-module{width:19%}
@media (max-width:900px){
  .data-table thead{display:none}
  .data-table,.data-table tbody,.data-table tr,.data-table td{display:block;width:100%}
  .table-wrap{background:transparent;border:0;box-shadow:none;border-radius:0;overflow:visible}
  .data-table tbody tr{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:6px 0;margin-bottom:16px}
  .data-table tbody tr:hover{background:var(--card)}
  .data-table td{border-top:0;padding:8px 20px}
  .data-table td::before{content:attr(data-label);display:block;font-size:12.5px;font-weight:600;color:var(--brand);margin-bottom:2px}
}

/* ---------- 对比卡 ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.compare-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:flex;flex-direction:column}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#C9D8E8}
.thumb{position:relative;aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb.img-fallback::after{content:"图片加载中，请稍后刷新";position:absolute;inset:0;display:grid;place-items:center;font-size:13px;color:var(--muted)}
.compare-body{padding:24px 26px 28px;display:flex;flex-direction:column;gap:10px;flex:1}
.compare-body h3{font-size:20px}
.compare-body p{color:var(--muted);font-size:15.5px;margin:0}
.compare-body .link{margin-top:auto;align-self:flex-start}
@media (max-width:860px){.compare-grid{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);transition:border-color .18s ease}
.faq-item:hover{border-color:#C9D8E8}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;background:none;border:0;font-size:16.5px;font-weight:600;text-align:left;cursor:pointer}
.faq-icon{flex-shrink:0;width:24px;height:24px;border-radius:8px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-size:16px;line-height:1;transition:transform .18s ease,background .18s ease}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg);background:var(--accent-soft);color:var(--accent-deep)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-a__inner{padding:0 24px 22px;color:var(--muted);font-size:15.5px}

/* ---------- CTA + 表单 ---------- */
.cta-band{background:var(--brand-soft);border-radius:24px;padding:48px;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;position:relative;overflow:hidden}
.cta-band h2{font-size:30px;color:var(--brand);margin-bottom:12px}
.cta-band p{color:var(--muted);margin:0}
.sub-form{display:flex;gap:12px}
.sub-form input{flex:1;height:48px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 16px;font-size:15px;background:#fff;color:var(--text);transition:border-color .18s ease,box-shadow .18s ease}
.sub-form input::placeholder{color:#93A2B2}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,58,99,.14)}
.sub-form input.is-invalid{border-color:var(--error);box-shadow:0 0 0 3px rgba(214,69,69,.14)}
.form-msg{font-size:13.5px;min-height:20px;margin:10px 0 0;color:var(--muted)}
.form-msg.is-error{color:var(--error)}
.form-msg.is-ok{color:var(--success)}
.privacy-note{font-size:13px;color:var(--muted);margin-top:6px}
@media (max-width:900px){.cta-band{grid-template-columns:1fr;padding:34px 24px}.cta-band h2{font-size:24px}}
@media (max-width:520px){.sub-form{flex-direction:column}.sub-form .btn{width:100%}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding-top:64px;font-size:14px;color:var(--muted)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .logo-text{font-size:19px;font-weight:700;color:var(--brand)}
.footer-desc{font-size:14px;color:var(--muted);margin:14px 0 0;max-width:280px;line-height:1.75}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin:0 0 14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--muted);transition:color .18s ease}
.footer-links a:hover{color:var(--brand)}
.footer-sub{display:flex;gap:8px;margin-top:4px}
.footer-sub input{flex:1;min-width:0;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px;font-size:14px;background:#fff}
.footer-sub input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,58,99,.14)}
.footer-sub .btn{height:44px;padding:0 18px;font-size:14px}
.footer-bottom{margin-top:52px;border-top:1px solid var(--line);padding:20px 0 26px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.footer-bottom a{color:var(--brand)}
.footer-bottom a:hover{color:var(--accent)}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:600px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-top:48px}
  .footer-sub{flex-direction:column}
  .footer-sub .btn{width:100%}
}