/* roulang page: index */
:root{
  --c-primary:#0F6E86;
  --c-primary-700:#0A5364;
  --c-primary-050:#E9F3F6;
  --c-accent:#FF7A45;
  --c-accent-050:#FFF2EC;
  --c-ink:#10232E;
  --c-ink-2:#3C5666;
  --c-muted:#7B8C97;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-line:rgba(16,35,46,.08);
  --c-footer:#0E2A34;
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 4px 16px rgba(16,60,78,.06);
  --sh-2:0 10px 30px rgba(16,60,78,.10);
  --sh-3:0 20px 50px rgba(16,60,78,.14);
  --t:280ms cubic-bezier(.2,.7,.3,1);
  --gap:24px;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-accent)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.22;font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
h3{font-size:21px;line-height:1.4;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
.num,.stat-num,.timeline-date{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 导航 ============ */
.site-header{position:sticky;top:16px;z-index:80;padding:0 16px}
.nav-shell{
  position:relative;
  width:min(1160px,100%);
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:20px;
  padding:0 14px 0 20px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:height 240ms cubic-bezier(.2,.7,.3,1),box-shadow 240ms cubic-bezier(.2,.7,.3,1),background 240ms cubic-bezier(.2,.7,.3,1);
}
.site-header.is-scrolled .nav-shell{height:56px;box-shadow:var(--sh-2);background:rgba(255,255,255,.96)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:12px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-700));
  color:#fff;font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.brand-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--c-primary)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:9px 14px;
  font-size:15px;color:var(--c-ink-2);
  border-radius:var(--r-pill);
  transition:color var(--t),background var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:18px;height:2px;border-radius:2px;background:var(--c-accent);
  transform:translateX(-50%) scaleX(0);
  transition:transform var(--t);
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-050)}
.nav-link:hover::after,.nav-link.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background var(--t),color var(--t),transform var(--t),box-shadow var(--t),border-color var(--t);
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#f2682f;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-accent:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-050);color:var(--c-primary-700);transform:translateY(-2px)}
.btn-ghost:active{transform:none}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none;transform:none}
.nav-cta{padding:11px 22px;font-size:15px;flex-shrink:0}
.nav-toggle{
  display:none;width:36px;height:36px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  border:1px solid var(--c-line);background:#fff;margin-left:auto;
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--c-ink-2);transition:transform var(--t),opacity var(--t)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============ Hero ============ */
.hero-section{
  margin-top:-84px;
  padding:150px 0 var(--sec);
  background-image:linear-gradient(rgba(255,255,255,.84),rgba(255,255,255,.95)),url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:var(--c-accent-050);color:var(--c-accent);
  font-size:13.5px;font-weight:600;margin-bottom:20px;
}
.hero-title{color:var(--c-ink)}
.hero-title em{font-style:normal;color:var(--c-primary)}
.hero-sub{font-size:17px;color:var(--c-ink-2);margin-top:18px;max-width:560px;line-height:1.75}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-mini{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:32px;font-size:14px;color:var(--c-muted)}
.hero-mini li{display:flex;align-items:center;gap:8px}
.hero-mini li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 6px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3.4;object-fit:cover;border-radius:20px;box-shadow:var(--sh-3)}
.hero-stat-card{
  position:absolute;right:-10px;bottom:-18px;
  background:#fff;border-radius:14px;padding:16px 22px;
  box-shadow:var(--sh-2);border:1px solid var(--c-line);
  display:flex;flex-direction:column;gap:2px;
}
.hero-stat-num{font-size:28px;font-weight:700;color:var(--c-accent);line-height:1.1}
.hero-stat-label{font-size:13.5px;color:var(--c-muted)}

/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0}
.section-alt{background:#fff}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{color:var(--c-ink)}
.section-head p{margin-top:14px;color:var(--c-ink-2);font-size:15.5px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.link-more{font-size:15px;font-weight:600;color:var(--c-primary)}
.link-more:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}

/* ============ 品牌主张条 ============ */
.claim-bar{background:var(--c-primary-050)}
.claim-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:36px 0;text-align:center}
.claim-inner li{font-size:16px;font-weight:600;color:var(--c-primary-700)}
.claim-inner li span{display:block;font-size:13.5px;font-weight:400;color:var(--c-ink-2);margin-top:6px}

/* ============ 品牌故事 ============ */
.story-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
.story-media{display:grid;grid-template-columns:1.4fr 1fr;grid-template-rows:auto auto;gap:18px}
.story-media img{border-radius:var(--r-img);object-fit:cover;width:100%;height:100%}
.story-media .img-a{grid-row:span 2;aspect-ratio:3/4}
.story-media .img-b{aspect-ratio:4/3}
.story-media .img-c{aspect-ratio:4/3}
.story-body h2{margin-bottom:20px}
.story-body p{font-size:15.5px;color:var(--c-ink-2);margin-bottom:16px}
.quote{
  margin-top:26px;padding:20px 22px;background:var(--c-primary-050);
  border-left:4px solid var(--c-accent);border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:15.5px;color:var(--c-ink);font-weight:500;
}

/* ============ 精选内容卡 ============ */
.feature-grid{display:grid;grid-template-columns:7fr 5fr;gap:var(--gap)}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:var(--gap)}
.card{
  display:block;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  color:var(--c-ink);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(15,110,134,.20);color:var(--c-ink)}
.card-media{overflow:hidden}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img) var(--r-img) 0 0;transition:transform 250ms cubic-bezier(.2,.7,.3,1)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:24px}
.feature-main .card-media img{aspect-ratio:16/9}
.feature-main .card-body{padding:28px}
.card h3{margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card p{font-size:15px;line-height:1.75;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feature-horizontal{display:grid;grid-template-columns:170px 1fr;align-items:stretch}
.feature-horizontal .card-media img{height:100%;aspect-ratio:auto;border-radius:var(--r-img) 0 0 var(--r-img)}
.feature-horizontal .card-body{padding:20px 22px;display:flex;flex-direction:column;justify-content:center}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-050);color:var(--c-primary);
  font-size:13px;font-weight:600;line-height:1.5;
}
.badge-accent{background:var(--c-accent-050);color:var(--c-accent)}
.badge-row{display:flex;flex-wrap:wrap;gap:8px}

/* ============ 最新信息列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.news-card{display:flex;flex-direction:column;height:100%}
.news-card .card-media img{aspect-ratio:16/10}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1;gap:10px}
.news-title{font-size:18px;line-height:1.45;font-weight:600}
.news-desc{font-size:15px;line-height:1.75;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--c-muted)}
.news-more{color:var(--c-primary);font-weight:600}
.news-card:hover .news-more{color:var(--c-accent)}
.empty-state{text-align:center;padding:56px 24px;background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card)}
.empty-icon{width:64px;height:64px;border-radius:50%;background:var(--c-primary-050);color:var(--c-primary);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:26px;font-weight:700}
.empty-state p{color:var(--c-ink-2);font-size:15px;margin-bottom:18px}

/* ============ 信任背书 ============ */
.trust-band{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.trust-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:56px 0}
.trust-item{text-align:center}
.trust-num{font-size:clamp(28px,3vw,34px);font-weight:700;color:var(--c-accent);line-height:1.15;font-variant-numeric:tabular-nums}
.trust-label{font-size:13.5px;color:var(--c-muted);margin-top:8px}
.logo-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:16px 46px;padding:0 0 48px}
.logo-strip span{font-size:15px;font-weight:600;color:var(--c-ink-2);opacity:.6;transition:opacity var(--t),color var(--t)}
.logo-strip span:hover{opacity:1;color:var(--c-primary)}

/* ============ FAQ ============ */
.faq-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:8px 32px;
  display:grid;grid-template-columns:1fr 1fr;gap:0 40px;
}
.faq-block{border-bottom:1px solid var(--c-line)}
.faq-block:nth-last-child(-n+2){border-bottom:0}
.faq-item{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0 22px 16px;text-align:left;position:relative;
  font-size:17px;font-weight:600;color:var(--c-ink);
  transition:color var(--t);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:4px;border-radius:4px;
  background:var(--c-line);transition:background var(--t);
}
.faq-item[aria-expanded="true"]{color:var(--c-primary)}
.faq-item[aria-expanded="true"]::before{background:var(--c-accent)}
.faq-item:hover{color:var(--c-primary)}
.faq-icon{font-size:20px;font-weight:400;color:var(--c-primary);flex:0 0 auto;line-height:1}
.faq-panel{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1)}
.faq-panel p{font-size:15.5px;line-height:1.8;color:var(--c-ink-2);padding:0 0 22px 16px;margin:0}

/* ============ CTA / 订阅 ============ */
.cta-wrap{padding:0 0 var(--sec)}
.cta-box{
  background:var(--c-primary);border-radius:24px;padding:56px;
  display:grid;grid-template-columns:6fr 5fr;gap:48px;align-items:center;
  box-shadow:var(--sh-3);
}
.cta-box h2{color:#fff}
.cta-box p{color:rgba(255,255,255,.82);font-size:15.5px;margin-top:14px;max-width:460px}
.subscribe-form{display:flex;gap:12px;align-items:flex-start}
.form-field{flex:1}
.form-field input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-sm);
  background:#fff;border:1px solid transparent;font-size:15.5px;color:var(--c-ink);
  transition:border-color var(--t),box-shadow var(--t);
}
.form-field input::placeholder{color:var(--c-muted)}
.form-field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,110,134,.15)}
.form-field.is-error input{border-color:#D9453C}
.form-field.is-success input{border-color:var(--c-primary)}
.form-msg{font-size:13px;margin-top:8px;min-height:18px;color:rgba(255,255,255,.82)}
.form-field.is-error .form-msg{color:#FFD4CE}
.form-field.is-success .form-msg{color:#fff}
.form-hint{font-size:13.5px;color:rgba(255,255,255,.62);margin-top:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.78);padding:64px 0 0;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff}
.footer-brand span:last-child{color:#fff;font-weight:700;font-size:17px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.site-footer p{color:rgba(255,255,255,.78);font-size:14px;line-height:1.8}
.footer-list li{margin-bottom:10px}
.footer-list a{color:rgba(255,255,255,.78);padding-left:0;position:relative;transition:color var(--t),padding-left var(--t)}
.footer-list a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--c-accent);border-radius:2px;transition:height var(--t);
}
.footer-list a:hover{color:#fff;padding-left:12px;text-decoration:none}
.footer-list a:hover::before{height:14px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-grid{gap:36px}
  .feature-horizontal{grid-template-columns:150px 1fr}
}
@media (max-width:992px){
  :root{--sec:72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media img{aspect-ratio:16/9}
  .hero-stat-card{right:12px;bottom:-16px}
  .story-grid{grid-template-columns:1fr;gap:36px}
  .feature-grid{grid-template-columns:1fr}
  .feature-side{grid-template-columns:1fr 1fr;grid-template-rows:none}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .trust-stats{grid-template-columns:repeat(2,1fr)}
  .cta-box{grid-template-columns:1fr;gap:28px;padding:44px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sec:56px}
  .container{padding:0 18px}
  body{font-size:16px}
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border:1px solid var(--c-line);border-radius:20px;
    padding:10px;box-shadow:var(--sh-2);margin-left:0;
  }
  .nav-links.is-open{display:flex}
  .nav-link{height:48px;padding:0 16px;border-radius:12px;font-size:15.5px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:var(--c-primary-050)}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .hero-section{margin-top:-80px;padding-top:132px}
  .feature-side{grid-template-columns:1fr}
  .feature-horizontal{grid-template-columns:1fr}
  .feature-horizontal .card-media img{aspect-ratio:16/10;border-radius:var(--r-img) var(--r-img) 0 0}
  .news-grid{grid-template-columns:1fr}
  .faq-card{grid-template-columns:1fr;padding:8px 22px}
  .faq-block:nth-last-child(-n+2){border-bottom:1px solid var(--c-line)}
  .faq-block:last-child{border-bottom:0}
  .claim-inner{grid-template-columns:1fr;text-align:left;gap:16px;padding:28px 0}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn{width:100%}
  .story-media .img-a{grid-row:auto;aspect-ratio:4/3}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .btn{width:100%;padding:14px 20px}
  .nav-cta{width:auto}
  .hero-actions{flex-direction:column}
  .trust-stats{grid-template-columns:1fr;gap:28px}
  .cta-box{padding:32px 22px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
:root{
  --c-primary:#0F6E86;
  --c-primary-700:#0A5364;
  --c-primary-050:#E9F3F6;
  --c-accent:#FF7A45;
  --c-accent-050:#FFF2EC;
  --c-ink:#10232E;
  --c-ink-2:#3C5666;
  --c-muted:#7B8C97;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-line:rgba(16,35,46,.08);
  --footer-bg:#0E2A34;
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --sh-1:0 4px 16px rgba(16,60,78,.06);
  --sh-2:0 10px 30px rgba(16,60,78,.10);
  --sh-3:0 20px 50px rgba(16,60,78,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:280ms var(--ease);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t),border-color var(--t);}
a:hover{color:var(--c-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(--c-primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:16px;z-index:80;padding:0 16px;}
.nav-shell{
  position:relative;
  width:min(1160px,calc(100% - 0px));
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:14px;
  padding:0 12px 0 18px;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--c-line);
  border-radius:999px;
  box-shadow:var(--sh-1);
  transition:height 240ms var(--ease),box-shadow 240ms var(--ease),background 240ms var(--ease);
}
.site-header.is-scrolled .nav-shell{height:56px;box-shadow:var(--sh-2);background:rgba(255,255,255,.96);}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-700));
  color:#fff;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.brand-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:8px 12px;
  font-size:15px;
  color:var(--c-ink-2);
  border-radius:999px;
  white-space:nowrap;
  transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:0;height:2px;border-radius:2px;background:var(--c-accent);
  transform:translateX(-50%);
  transition:width var(--t);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after,.nav-link.is-active::after{width:18px;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-cta{margin-left:6px;flex-shrink:0;}
.nav-toggle{
  display:none;width:36px;height:36px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  margin-left:auto;padding:0;
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--c-ink-2);transition:background var(--t);}
.nav-toggle:hover span{background:var(--c-primary);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:999px;border:1px solid transparent;
  cursor:pointer;
  transition:background var(--t),color var(--t),transform var(--t),box-shadow var(--t),border-color var(--t);
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#F06428;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:none;box-shadow:none;}
.btn-secondary{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-secondary:hover{background:var(--c-primary-050);color:var(--c-primary-700);border-color:var(--c-primary-700);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none;transform:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:7px 12px;font-size:13px;font-weight:600;line-height:1;
  border-radius:999px;background:var(--c-primary-050);color:var(--c-primary);
}
.badge-accent{background:var(--c-accent-050);color:var(--c-accent);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  font-size:13.5px;padding:8px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2);
  transition:border-color var(--t),color var(--t),background var(--t);
}
.tag:hover{border-color:rgba(15,110,134,.28);color:var(--c-primary);background:var(--c-primary-050);}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-muted);}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-accent);}
.breadcrumb .sep{color:rgba(123,140,151,.6);}
.breadcrumb .current{color:var(--c-muted);}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;
  padding:30px 0 76px;
  background-image:linear-gradient(180deg,rgba(233,243,246,.94),rgba(246,249,250,1)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.article-head{max-width:860px;margin:26px auto 0;}
.article-head h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.01em;
  margin:18px 0 0;
}
.title-rule{width:56px;height:4px;border-radius:2px;background:var(--c-accent);margin:26px 0 22px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--c-muted);font-variant-numeric:tabular-nums;}
.article-meta .dot{color:rgba(123,140,151,.55);}

/* ---------- 正文 ---------- */
.article-main{padding:0 0 96px;}
.article-card{
  max-width:860px;margin:-40px auto 0;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:48px;
}
.article-body{font-size:17.5px;line-height:1.95;color:var(--c-ink);word-wrap:break-word;overflow-wrap:break-word;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;
  margin:48px 0 16px;padding-left:14px;border-left:4px solid var(--c-primary);
}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;margin:32px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:4px;}
.article-body ul li{position:relative;padding-left:20px;line-height:1.9;margin-bottom:8px;}
.article-body ul li::before{content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:50%;background:var(--c-primary);}
.article-body ol{counter-reset:item;padding-left:0;}
.article-body ol li{position:relative;padding-left:26px;line-height:1.9;margin-bottom:8px;counter-increment:item;}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:.35em;
  width:18px;height:18px;border-radius:50%;background:var(--c-primary-050);color:var(--c-primary);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin:26px 0;padding:20px;
  background:var(--c-primary-050);
  border-left:4px solid var(--c-accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:24px auto;max-width:100%;height:auto;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(15,110,134,.35);}
.article-body a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}
.article-body table{width:100%;border-collapse:collapse;font-size:15.5px;display:block;overflow-x:auto;border-radius:var(--r-img);}
.article-body thead th{background:var(--c-primary-050);color:var(--c-ink);font-weight:600;text-align:left;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--c-line);white-space:nowrap;}
.article-body pre{background:#0E2A34;color:#EAF3F6;padding:18px 20px;border-radius:var(--r-sm);overflow-x:auto;font-size:14.5px;line-height:1.7;}
.article-body code{background:var(--c-primary-050);color:var(--c-primary-700);padding:2px 6px;border-radius:6px;font-size:15px;}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:44px;padding-top:26px;border-top:1px solid var(--c-line);
}
.empty-state{text-align:center;padding:40px 0 12px;}
.empty-icon{
  width:64px;height:64px;border-radius:50%;margin:0 auto 18px;
  background:var(--c-primary-050);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:700;
}
.empty-state p{font-size:15px;color:var(--c-ink-2);margin-bottom:18px;}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 96px;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,2.8vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.section-head p{font-size:15px;color:var(--c-ink-2);margin-top:10px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  color:inherit;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(15,110,134,.20);color:inherit;}
.card-thumb{position:relative;aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:#EDF2F4;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 250ms var(--ease);}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-badge{position:absolute;left:12px;top:12px;padding:6px 11px;font-size:12.5px;font-weight:600;border-radius:999px;background:rgba(255,255,255,.92);color:var(--c-primary);}
.card-title{
  font-size:18px;line-height:1.45;font-weight:600;color:var(--c-ink);
  margin:16px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-excerpt{
  font-size:15px;line-height:1.75;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin:0 0 16px;
}
.card-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--c-muted);font-variant-numeric:tabular-nums;}
.card-link{font-size:14.5px;font-weight:600;color:var(--c-primary);}
.card:hover .card-link{color:var(--c-accent);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.78);padding:72px 0 30px;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-grid h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-grid p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.72);}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;font-size:16px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{
  position:relative;display:inline-block;padding-left:0;
  font-size:14.5px;color:rgba(255,255,255,.78);
  transition:color var(--t),padding-left var(--t);
}
.footer-list a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--c-accent);border-radius:2px;
  transition:height var(--t);
}
.footer-list a:hover{color:#fff;padding-left:10px;}
.footer-list a:hover::before{height:14px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:56px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-link{padding:8px 10px;font-size:14.5px;}
}
@media (max-width:992px){
  .article-hero{padding:24px 0 64px;}
  .article-card{padding:36px;}
  .related{padding-bottom:72px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .site-header{padding:0 12px;top:12px;}
  .nav-shell{height:58px;padding:0 10px 0 14px;}
  .nav-links{
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    padding:8px;margin:0;
    background:#fff;border:1px solid var(--c-line);border-radius:20px;box-shadow:var(--sh-2);
  }
  .nav-links.is-open{display:flex;}
  .nav-link{height:48px;padding:0 16px;border-radius:12px;font-size:15.5px;}
  .nav-link::after{display:none;}
  .nav-link:hover,.nav-link.is-active{background:var(--c-primary-050);}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .brand-text{font-size:15.5px;}
  .article-hero{padding:18px 0 56px;}
  .article-card{padding:24px 20px;margin-top:-30px;border-radius:16px;}
  .article-body{font-size:16.5px;line-height:1.9;}
  .article-body h2{margin-top:36px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .card-grid{grid-template-columns:1fr;}
  .related{padding-bottom:56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .site-footer{padding:56px 0 26px;}
  .footer-bottom{margin-top:36px;}
}
@media (max-width:480px){
  .brand-text{font-size:14.5px;}
  .article-head h1{font-size:26px;}
  .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0F6E86;
  --c-primary-700:#0A5364;
  --c-primary-050:#E9F3F6;
  --c-accent:#FF7A45;
  --c-accent-050:#FFF2EC;
  --c-ink:#10232E;
  --c-ink-2:#3C5666;
  --c-muted:#7B8C97;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-line:rgba(16,35,46,.08);
  --c-footer:#0E2A34;
  --sh-1:0 4px 16px rgba(16,60,78,.06);
  --sh-2:0 10px 30px rgba(16,60,78,.10);
  --sh-3:0 20px 50px rgba(16,60,78,.14);
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --r-lg:24px;
  --r-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:280ms var(--ease);
  --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","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t),border-color var(--t);}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul{padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,2.8vw,34px);line-height:1.3;font-weight:700;letter-spacing:-0.01em;}
.section-head p{margin-top:14px;font-size:15.5px;line-height:1.8;color:var(--c-ink-2);}
.eyebrow{
  display:inline-block;font-size:13px;line-height:1.6;font-weight:600;
  color:var(--c-primary);background:var(--c-primary-050);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px;
}
.eyebrow.is-warm{color:var(--c-accent);background:var(--c-accent-050);}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:sticky;top:16px;z-index:60;
  padding:0 16px;
}
.nav-shell{
  width:min(1160px,calc(100% - 32px));
  margin:0 auto;
  min-height:64px;
  display:flex;align-items:center;gap:20px;
  padding:8px 12px 8px 18px;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:min-height 240ms var(--ease),box-shadow 240ms var(--ease),background 240ms var(--ease);
}
.site-header.is-scrolled .nav-shell{
  min-height:56px;
  box-shadow:var(--sh-2);
  background:rgba(255,255,255,.96);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-ink);font-weight:700;}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:11px;
  background:var(--c-primary);
  color:#fff;font-size:17px;font-weight:700;line-height:1;
}
.brand-text{font-size:16.5px;letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--c-ink-2);font-weight:500;
  transition:color var(--t),background var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;
  width:0;height:2px;border-radius:2px;background:var(--c-accent);
  transform:translateX(-50%);transition:width var(--t);
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-050);}
.nav-link:hover::after{width:18px;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{width:18px;}
.nav-cta{flex:0 0 auto;padding:11px 22px;font-size:15px;}
.nav-toggle{
  display:none;width:36px;height:36px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;
  padding:0;position:relative;flex:0 0 auto;
}
.nav-toggle span{
  position:absolute;left:9px;right:9px;height:2px;border-radius:2px;background:var(--c-ink);
  transition:transform var(--t),opacity var(--t);
}
.nav-toggle span:nth-child(1){top:12px;}
.nav-toggle span:nth-child(2){top:17px;}
.nav-toggle span:nth-child(3){top:22px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  padding:14px 28px;
  font-size:15.5px;font-weight:600;line-height:1.2;
  transition:background var(--t),color var(--t),transform var(--t),box-shadow var(--t),border-color var(--t);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:#F0682F;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-outline{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-050);color:var(--c-primary-700);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none;box-shadow:none;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--c-primary);
  border-bottom:2px solid transparent;padding-bottom:2px;
}
.text-link:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:13.5px;color:var(--c-muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-muted);}
.breadcrumb .current{color:var(--c-muted);}

/* ---------- 页头 ---------- */
.page-head{
  padding:56px 0 16px;
}
.page-head-inner{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:end;
  padding-bottom:28px;border-bottom:1px solid var(--c-line);
}
.page-head h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.22;font-weight:700;letter-spacing:-0.01em;
  max-width:820px;
}
.page-head .lead{
  margin-top:16px;font-size:15.5px;line-height:1.8;color:var(--c-ink-2);max-width:720px;
}
.page-head .breadcrumb{justify-content:flex-end;padding-bottom:6px;}

/* ---------- 交错图文段 ---------- */
.zigzag-list{display:flex;flex-direction:column;gap:80px;}
.zigzag-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.zigzag-row.is-reverse .zigzag-media{order:2;}
.zigzag-media{
  position:relative;overflow:hidden;border-radius:20px;
  box-shadow:var(--sh-2);aspect-ratio:4/3;background:#EDF2F4;
}
.zigzag-media img{width:100%;height:100%;object-fit:cover;transition:transform 250ms var(--ease);}
.zigzag-row:hover .zigzag-media img{transform:scale(1.03);}
.zigzag-body h2{
  font-size:clamp(24px,2.8vw,34px);line-height:1.3;font-weight:700;letter-spacing:-0.01em;
  margin-bottom:18px;
}
.zigzag-body p{font-size:15.5px;line-height:1.85;color:var(--c-ink-2);}
.zigzag-body p + p{margin-top:14px;}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.point-list li{
  position:relative;padding-left:22px;font-size:15px;line-height:1.75;color:var(--c-ink-2);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:50%;background:var(--c-primary);opacity:.7;
}
.zigzag-body .text-link{margin-top:22px;}

/* ---------- 对比要点卡 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.compare-card:hover{box-shadow:var(--sh-2);transform:translateY(-6px);border-color:rgba(15,110,134,.20);}
.compare-card.is-primary{background:var(--c-primary-050);border-color:rgba(15,110,134,.14);box-shadow:none;}
.compare-card h3{font-size:21px;line-height:1.4;font-weight:600;margin-bottom:10px;}
.compare-card .card-sub{font-size:13.5px;color:var(--c-muted);margin-bottom:18px;}
.compare-card ul{display:flex;flex-direction:column;gap:12px;}
.compare-card li{
  position:relative;padding-left:22px;font-size:15px;line-height:1.75;color:var(--c-ink-2);
}
.compare-card li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--c-primary);opacity:.7;
}
.compare-card.is-primary li::before{background:var(--c-accent);opacity:1;}
.compare-foot{
  margin-top:22px;padding-top:18px;border-top:1px solid var(--c-line);
  font-size:13.5px;color:var(--c-muted);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.compare-foot strong{color:var(--c-accent);font-size:19px;font-weight:700;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:22px 24px;text-align:left;
  font-size:17px;line-height:1.5;font-weight:600;color:var(--c-ink);
  border-left:4px solid var(--c-line);
  transition:border-color var(--t),color var(--t),background var(--t);
}
.faq-q:hover{color:var(--c-primary);background:#FBFDFE;}
.faq-item.is-open .faq-q{border-left-color:var(--c-accent);}
.faq-icon{
  margin-left:auto;flex:0 0 auto;width:22px;text-align:center;
  font-size:20px;line-height:1;font-weight:400;color:var(--c-primary);
}
.faq-icon::before{content:"+";}
.faq-item.is-open .faq-icon::before{content:"−";}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms var(--ease);
}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a p{
  padding:0 24px 24px 42px;
  font-size:15.5px;line-height:1.8;color:var(--c-ink-2);
}

/* ---------- CTA / 订阅 ---------- */
.cta-band{
  background:var(--c-primary);
  border-radius:var(--r-lg);
  padding:56px;
  color:#fff;
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  box-shadow:var(--sh-3);
}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);line-height:1.3;font-weight:700;color:#fff;letter-spacing:-0.01em;}
.cta-band p{margin-top:14px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.82);}
.cta-meta{margin-top:22px;display:flex;gap:28px;flex-wrap:wrap;}
.cta-meta span{font-size:13.5px;color:rgba(255,255,255,.7);}
.cta-meta strong{display:block;font-size:19px;color:var(--c-accent-050);font-weight:700;}
.subscribe-form{display:flex;gap:12px;align-items:center;}
.subscribe-form input{
  flex:1 1 auto;min-width:0;height:48px;padding:0 16px;
  border:1px solid rgba(255,255,255,.35);border-radius:var(--r-sm);
  background:rgba(255,255,255,.96);color:var(--c-ink);
  transition:border-color var(--t),box-shadow var(--t);
}
.subscribe-form input::placeholder{color:var(--c-muted);}
.subscribe-form input:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(15,110,134,.15);
}
.subscribe-form .btn{flex:0 0 auto;}
.form-tip{
  margin-top:12px;font-size:13px;line-height:1.6;color:rgba(255,255,255,.75);min-height:18px;
}
.form-tip.is-ok{color:#EAF7FB;}
.form-tip.is-error{color:#FFD9CC;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.78);margin-top:96px;padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{
  display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff;}
.site-footer p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.72);}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a{
  display:inline-block;position:relative;padding-left:0;
  font-size:14.5px;color:rgba(255,255,255,.78);
  transition:color var(--t),padding-left var(--t);
}
.footer-list a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--c-accent);border-radius:2px;
  transition:height var(--t);
}
.footer-list a:hover{color:#fff;padding-left:12px;}
.footer-list a:hover::before{height:14px;}
.footer-cta{margin-top:12px;}
.footer-cta a{color:#fff;font-weight:600;}
.footer-cta a:hover{color:var(--c-accent);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec:72px;}
  .zigzag-row{gap:40px;}
}
@media (max-width:991px){
  :root{--sec:72px;}
  .compare-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:44px;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--sec:56px;}
  .container{padding:0 18px;}
  .site-header{padding:0 12px;top:12px;}
  .nav-shell{width:100%;padding:8px 12px;gap:12px;}
  .nav-links{
    position:absolute;left:12px;right:12px;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--c-line);border-radius:20px;
    box-shadow:var(--sh-2);padding:10px;
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-link{padding:0 14px;line-height:48px;border-radius:12px;}
  .nav-link::after{bottom:11px;}
  .nav-toggle{display:block;margin-left:auto;}
  .nav-cta{display:none;}
  .page-head{padding:36px 0 8px;}
  .page-head-inner{grid-template-columns:1fr;gap:16px;align-items:start;padding-bottom:22px;}
  .page-head .breadcrumb{justify-content:flex-start;}
  .zigzag-list{gap:56px;}
  .zigzag-row{grid-template-columns:1fr;gap:24px;}
  .zigzag-row.is-reverse .zigzag-media{order:0;}
  .faq-q{padding:18px 18px;font-size:16px;}
  .faq-a p{padding:0 18px 20px 36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .subscribe-form{flex-direction:column;align-items:stretch;}
  .subscribe-form .btn{width:100%;}
}
@media (max-width:520px){
  .page-head h1{font-size:28px;}
  .zigzag-body h2{font-size:23px;}
  .cta-band{padding:32px 22px;border-radius:var(--r-card);}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
  .btn{padding:13px 22px;font-size:15px;width:100%;}
  .nav-cta{width:auto;}
  .text-link{width:auto;}
}

/* roulang page: category2 */
:root{
  --c-primary:#0F6E86;
  --c-primary-700:#0A5364;
  --c-primary-050:#E9F3F6;
  --c-accent:#FF7A45;
  --c-accent-050:#FFF2EC;
  --c-ink:#10232E;
  --c-ink-2:#3C5666;
  --c-muted:#7B8C97;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-line:rgba(16,35,46,.08);
  --c-danger:#D9453C;
  --sh-1:0 4px 16px rgba(16,60,78,.06);
  --sh-2:0 10px 30px rgba(16,60,78,.10);
  --sh-3:0 20px 50px rgba(16,60,78,.14);
  --r-hero:20px;
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --r-pill:999px;
  --t:280ms cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t);}
a:hover{color:var(--c-accent);}
button{font:inherit;cursor:pointer;}
input{font:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

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

/* ===== 悬浮胶囊导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  padding:16px 0 0;
  display:flex;
  justify-content:center;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  position:relative;
  width:min(1160px,calc(100% - 32px));
  height:64px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:0 10px 0 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:height 240ms cubic-bezier(.2,.7,.3,1),box-shadow 240ms cubic-bezier(.2,.7,.3,1),background-color 240ms cubic-bezier(.2,.7,.3,1);
}
.site-header.is-scrolled .nav-shell{
  height:56px;
  background:rgba(255,255,255,.96);
  box-shadow:var(--sh-2);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--c-ink);white-space:nowrap;}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-700));
  color:#fff;font-size:16px;font-weight:700;
  flex:0 0 auto;
}
.brand-text{font-size:16px;letter-spacing:.01em;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:8px 12px;
  border-radius:var(--r-pill);
  font-size:15px;
  color:var(--c-ink-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;bottom:2px;
  width:0;height:2px;
  background:var(--c-accent);
  border-radius:2px;
  transform:translateX(-50%);
  transition:width var(--t);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after,.nav-link.is-active::after{width:18px;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-cta{margin-left:10px;flex:0 0 auto;padding:11px 22px;font-size:14.5px;}
.nav-toggle{
  display:none;
  width:36px;height:36px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  padding:0;
  transition:box-shadow var(--t),background-color var(--t);
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--c-ink-2);transition:transform 240ms cubic-bezier(.2,.7,.3,1),opacity 200ms linear;}
.nav-toggle:hover{box-shadow:var(--sh-1);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15.5px;
  font-weight:600;
  line-height:1.2;
  transition:background-color var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t);
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#F0672F;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:none;box-shadow:none;}
.btn-ghost{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-050);color:var(--c-primary);transform:translateY(-2px);}
.btn-ghost:active{transform:none;}
.btn:disabled,.btn[disabled]{opacity:.45;pointer-events:none;box-shadow:none;transform:none;}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  line-height:1.6;
  font-weight:600;
  background:var(--c-primary-050);
  color:var(--c-primary);
}
.badge-accent{background:var(--c-accent-050);color:var(--c-accent);}

/* ===== 页头 ===== */
main{padding-top:34px;padding-bottom:0;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--c-muted);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-accent);}
.breadcrumb .sep{color:var(--c-muted);}
.breadcrumb .current{color:var(--c-muted);}

.page-banner{
  position:relative;
  min-height:260px;
  border-radius:var(--r-hero);
  padding:40px 44px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  overflow:hidden;
  box-shadow:var(--sh-1);
  background-image:linear-gradient(rgba(255,255,255,.72),rgba(255,255,255,.72)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.page-banner h1{
  max-width:760px;
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--c-ink);
}
.page-banner p{
  max-width:660px;
  margin-top:14px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--c-ink-2);
}
.banner-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}

/* ===== 板块 ===== */
.section{padding:96px 0 0;}
.section-tight{padding-top:64px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(24px,2.8vw,34px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-head p{
  margin-top:10px;
  max-width:640px;
  font-size:15.5px;
  color:var(--c-ink-2);
}
.text-link{
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  border-bottom:2px solid transparent;
  padding-bottom:2px;
}
.text-link:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}

/* ===== 筛选标签行 ===== */
.filter-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:32px;
}
.filter-chip{
  padding:9px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink-2);
  font-size:14.5px;
  line-height:1.6;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.filter-chip:hover{border-color:rgba(15,110,134,.28);color:var(--c-primary);transform:translateY(-2px);}
.filter-chip:active{transform:none;}
.filter-chip.is-active{
  background:var(--c-primary-050);
  color:var(--c-primary);
  border-color:transparent;
  font-weight:600;
}

/* ===== 图集网格 ===== */
.gallery-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.gallery-card{
  display:block;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.gallery-card:hover{
  box-shadow:var(--sh-2);
  transform:translateY(-6px);
  border-color:rgba(15,110,134,.20);
}
.gallery-media{
  position:relative;
  aspect-ratio:16 / 10;
  overflow:hidden;
  background:#EDF2F4;
}
.gallery-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 250ms ease;
}
.gallery-card:hover .gallery-media img{transform:scale(1.03);}
.gallery-media .badge{
  position:absolute;
  top:12px;left:12px;
  background:rgba(255,255,255,.9);
  color:var(--c-primary);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.gallery-media .badge-accent{
  background:rgba(255,242,236,.94);
  color:var(--c-accent);
}
.gallery-caption{
  position:absolute;
  left:12px;right:12px;bottom:12px;
  padding:10px 14px;
  border-radius:var(--r-sm);
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  font-size:15px;
  font-weight:600;
  color:var(--c-ink);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.gallery-body{
  padding:18px 22px 22px;
}
.gallery-body p{
  font-size:15px;
  line-height:1.75;
  color:var(--c-ink-2);
}
.gallery-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:14px;
  font-size:13.5px;
  color:var(--c-muted);
}
.gallery-card[hidden]{display:none;}

/* ===== 两栏说明文本 ===== */
.two-col{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:32px;
}
.info-block{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:30px 32px;
}
.info-block h2{
  font-size:22px;
  line-height:1.4;
  font-weight:700;
  margin-bottom:16px;
}
.info-block p{
  font-size:15.5px;
  line-height:1.85;
  color:var(--c-ink-2);
}
.info-block p + p{margin-top:14px;}
.dot-list{margin-top:16px;}
.dot-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  line-height:1.9;
  color:var(--c-ink-2);
}
.dot-list li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-primary);
}

/* ===== CTA ===== */
.cta-band{
  margin-top:96px;
  background:var(--c-primary);
  border-radius:24px;
  padding:56px;
  color:#fff;
}
.cta-inner{
  display:grid;
  grid-template-columns:6fr 5fr;
  gap:40px;
  align-items:center;
  padding:0;
}
.cta-band h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.32;
  font-weight:700;
  color:#fff;
}
.cta-band p{
  margin-top:12px;
  font-size:15.5px;
  line-height:1.85;
  color:rgba(255,255,255,.86);
}
.sub-form{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
}
.sub-form input{
  flex:1 1 220px;
  height:48px;
  min-width:0;
  padding:0 16px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.45);
  background:rgba(255,255,255,.96);
  color:var(--c-ink);
  transition:border-color var(--t),box-shadow var(--t);
}
.sub-form input::placeholder{color:var(--c-muted);}
.sub-form input:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(15,110,134,.15);
}
.sub-form input.is-error{border-color:var(--c-danger);}
.form-msg{
  flex:1 1 100%;
  font-size:13px;
  line-height:1.6;
  color:rgba(255,255,255,.86);
  min-height:18px;
}
.form-msg.is-error{color:#FFD9CE;}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:96px;
  background:#0E2A34;
  color:rgba(255,255,255,.78);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.site-footer p{
  font-size:14.5px;
  line-height:1.85;
  color:rgba(255,255,255,.78);
}
.site-footer h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-list li + li{margin-top:10px;}
.footer-list a{
  position:relative;
  display:inline-block;
  padding-left:0;
  font-size:14.5px;
  color:rgba(255,255,255,.78);
  transition:color var(--t),padding-left var(--t);
}
.footer-list a::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:2px;height:12px;
  margin-top:-6px;
  background:var(--c-accent);
  opacity:0;
  transition:opacity var(--t);
}
.footer-list a:hover{color:#fff;padding-left:10px;text-decoration:none;}
.footer-list a:hover::before{opacity:1;}
.footer-bottom{
  margin-top:48px;
  padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .nav-links{gap:0;}
  .nav-link{padding:8px 10px;font-size:14.5px;}
}
@media (max-width:991px){
  .section{padding-top:72px;}
  .cta-band{margin-top:72px;padding:44px;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  main{padding-top:24px;}
  .nav-shell{padding:0 10px 0 14px;}
  .nav-links{
    position:absolute;
    top:calc(100% + 10px);
    left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:8px;
    border-radius:20px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--c-line);
    box-shadow:var(--sh-2);
  }
  .nav-links.is-open{display:flex;}
  .nav-link{
    height:48px;
    display:flex;
    align-items:center;
    padding:0 14px;
    line-height:48px;
    border-radius:14px;
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{background:var(--c-primary-050);}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .section{padding-top:56px;}
  .section-tight{padding-top:48px;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:26px;}
  .page-banner{padding:30px 22px;min-height:220px;}
  .gallery-grid{grid-template-columns:1fr;}
  .two-col{grid-template-columns:1fr;}
  .info-block{padding:24px 22px;}
  .cta-band{margin-top:56px;padding:32px 22px;border-radius:20px;}
  .sub-form{flex-direction:column;align-items:stretch;}
  .sub-form input,.sub-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .site-footer{margin-top:56px;padding-top:48px;}
}
@media (max-width:479px){
  body{font-size:16px;}
  .brand-text{font-size:15px;}
  .page-banner h1{font-size:27px;}
  .filter-chip{flex:1 1 auto;text-align:center;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .btn{width:100%;}
  .nav-toggle,.nav-cta{width:auto;}
}

/* roulang page: category3 */
:root{
  --c-primary:#0F6E86;
  --c-primary-700:#0A5364;
  --c-primary-050:#E9F3F6;
  --c-accent:#FF7A45;
  --c-accent-050:#FFF2EC;
  --c-ink:#10232E;
  --c-ink-2:#3C5666;
  --c-muted:#7B8C97;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-line:rgba(16,35,46,.08);
  --c-footer:#0E2A34;
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 4px 16px rgba(16,60,78,.06);
  --sh-2:0 10px 30px rgba(16,60,78,.10);
  --sh-3:0 20px 50px rgba(16,60,78,.14);
  --tr:280ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;background-color:transparent;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,figure{margin:0;}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.22;font-weight:700;letter-spacing:-.01em;}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

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

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:sticky;top:16px;z-index:60;padding:0 16px;}
.nav-shell{
  position:relative;
  width:min(1160px,100%);
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:20px;
  padding:0 12px 0 18px;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:height 240ms cubic-bezier(.2,.7,.3,1),box-shadow 240ms cubic-bezier(.2,.7,.3,1),background 240ms cubic-bezier(.2,.7,.3,1);
}
.site-header.is-scrolled .nav-shell{height:56px;box-shadow:var(--sh-2);background:rgba(255,255,255,.96);}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:700;font-size:16px;letter-spacing:-.01em;flex:none;}
.brand-mark{
  width:34px;height:34px;flex:none;border-radius:10px;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--c-ink-2);
  border-radius:var(--r-pill);
  transition:color var(--tr),background-color var(--tr);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:3px;
  width:18px;height:2px;border-radius:2px;background:var(--c-accent);
  transform:translateX(-50%) scaleX(0);
  transition:transform var(--tr);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after,.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-cta{flex:none;}
.nav-toggle{
  display:none;width:36px;height:36px;flex:none;
  border:1px solid var(--c-line);border-radius:10px;background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:box-shadow var(--tr),border-color var(--tr);
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--c-ink-2);transition:transform var(--tr),opacity var(--tr);}
.nav-toggle:hover{border-color:rgba(15,110,134,.28);box-shadow:var(--sh-1);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color var(--tr),color var(--tr),transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-700);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#F26A33;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:none;box-shadow:none;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-050);transform:translateY(-2px);box-shadow:var(--sh-1);}
.btn-ghost:active{transform:none;box-shadow:none;}
.btn-light{background:#fff;color:var(--c-primary);}
.btn-light:hover{background:var(--c-primary-050);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-light:active{transform:none;box-shadow:none;}
.btn:disabled,.btn[disabled]{opacity:.45;pointer-events:none;transform:none;box-shadow:none;}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.4;font-weight:500;
  background:var(--c-primary-050);color:var(--c-primary);
}
.tag-accent{background:var(--c-accent-050);color:var(--c-accent);}
.tag-light{background:rgba(255,255,255,.18);color:#fff;}

/* ---------- 页头 ---------- */
.page-head{padding:72px 0 24px;}
.head-inner{max-width:720px;margin:0 auto;text-align:center;}
.head-inner h1{margin:20px 0 18px;}
.head-sub{font-size:15.5px;line-height:1.8;color:var(--c-ink-2);}
.head-rule{display:block;width:56px;height:4px;border-radius:2px;background:var(--c-accent);margin:28px auto 0;}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--c-surface);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:15.5px;line-height:1.8;color:var(--c-ink-2);}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:30px 24px 28px;
  box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.step::before{
  content:"";position:absolute;top:52px;right:-24px;
  width:24px;height:2px;background:var(--c-line);
}
.step:last-child::before{display:none;}
.step:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(15,110,134,.2);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:50%;
  background:var(--c-primary-050);color:var(--c-primary);
  font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{font-size:15px;line-height:1.75;color:var(--c-ink-2);}

/* ---------- 规格对照表 ---------- */
.table-wrap{
  border:1px solid var(--c-line);
  border-radius:var(--r-img);
  background:var(--c-surface);
  box-shadow:var(--sh-1);
  overflow-x:auto;
}
.spec-table{width:100%;min-width:760px;border-collapse:collapse;font-size:15px;}
.spec-table th,.spec-table td{padding:16px 22px;text-align:left;border-bottom:1px solid var(--c-line);}
.spec-table thead th{
  background:var(--c-primary-050);
  color:var(--c-primary-700);
  font-size:14.5px;font-weight:600;white-space:nowrap;
}
.spec-table td{color:var(--c-ink-2);line-height:1.7;}
.spec-table td:first-child{font-weight:600;color:var(--c-ink);}
.spec-table tbody tr:nth-child(even){background:var(--c-bg);}
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table .num{color:var(--c-accent);font-weight:700;font-variant-numeric:tabular-nums;}
.table-note{margin-top:16px;font-size:13.5px;color:var(--c-muted);}

/* ---------- 双列对照卡 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{
  display:flex;flex-direction:column;gap:18px;
  border-radius:var(--r-card);
  padding:36px 32px;
  transition:transform var(--tr),box-shadow var(--tr);
}
.compare-card.is-soft{background:var(--c-primary-050);border:1px solid rgba(15,110,134,.12);}
.compare-card.is-solid{background:var(--c-primary);color:#fff;box-shadow:var(--sh-2);}
.compare-card h3{font-size:22px;}
.compare-card.is-solid h3{color:#fff;}
.compare-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);}
.compare-card.is-solid:hover{box-shadow:var(--sh-3);}
.compare-card .tag{align-self:flex-start;}
.tick-list{display:flex;flex-direction:column;gap:12px;}
.tick-list li{position:relative;padding-left:22px;font-size:15px;line-height:1.75;color:var(--c-ink-2);}
.tick-list li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--c-accent);}
.compare-card.is-solid .tick-list li{color:rgba(255,255,255,.86);}
.compare-card.is-solid .tick-list li::before{background:#fff;}
.compare-card .btn{align-self:flex-start;margin-top:auto;}

/* ---------- 图文提示 ---------- */
.tips-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.tips-figure{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:14px;
  box-shadow:var(--sh-1);
}
.tips-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);}
.tips-figure figcaption{margin-top:12px;font-size:13.5px;color:var(--c-muted);text-align:center;}
.tips-body h2{margin-bottom:16px;}
.tips-body > p{font-size:15.5px;line-height:1.8;color:var(--c-ink-2);margin-bottom:22px;}
.dot-list{display:flex;flex-direction:column;gap:14px;}
.dot-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}
.dot-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--c-primary);}

/* ---------- CTA ---------- */
.section-cta{padding-bottom:96px;}
.cta-panel{
  background:var(--c-primary);
  border-radius:24px;
  padding:56px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
  box-shadow:var(--sh-3);
}
.cta-copy h2{color:#fff;margin-bottom:14px;}
.cta-copy p{font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.82);}
.subscribe-form{display:flex;gap:12px;align-items:flex-start;}
.field{flex:1;display:flex;flex-direction:column;gap:8px;}
.field input{
  width:100%;height:48px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.5);
  background:#fff;color:var(--c-ink);
  padding:0 16px;font-size:15px;
  transition:border-color var(--tr),box-shadow var(--tr);
}
.field input::placeholder{color:var(--c-muted);}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,110,134,.15);}
.field-msg{font-size:13px;line-height:1.6;min-height:18px;color:transparent;}
.field.is-error input{border-color:#D9453C;}
.field.is-error .field-msg{color:#FFD2C6;}
.field.is-success .field-msg{color:#C9EFEA;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.78);padding-top:72px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:16px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.site-footer p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.78);}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a{
  display:inline-block;
  font-size:14.5px;color:rgba(255,255,255,.78);
  border-left:2px solid transparent;
  transition:color var(--tr),border-color var(--tr),padding-left var(--tr);
}
.footer-list a:hover{color:#fff;border-left-color:var(--c-accent);padding-left:8px;}
.footer-link-strong{color:#fff;}
.footer-link-strong:hover{color:var(--c-accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-link{padding:10px 11px;font-size:14.5px;}
}
@media (max-width:992px){
  .section{padding:72px 0;}
  .section-cta{padding-bottom:72px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step::before{display:none;}
  .tips-grid{gap:32px;}
  .cta-panel{padding:40px;grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .site-header{padding:0 12px;}
  .section{padding:56px 0;}
  .section-cta{padding-bottom:56px;}
  .page-head{padding:48px 0 16px;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;margin-left:8px;}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    margin-left:0;padding:8px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--c-line);
    border-radius:20px;
    box-shadow:var(--sh-2);
  }
  .nav-links.is-open{display:flex;}
  .nav-link{height:48px;display:flex;align-items:center;padding:0 16px;border-radius:12px;font-size:15px;}
  .nav-link::after{display:none;}
  .nav-link:hover{background:var(--c-primary-050);}
  .nav-link.is-active{background:var(--c-primary-050);}
  .steps{grid-template-columns:1fr;gap:16px;}
  .step{padding:24px 20px;}
  .compare-grid{grid-template-columns:1fr;}
  .compare-card{padding:28px 22px;}
  .tips-grid{grid-template-columns:1fr;}
  .subscribe-form{flex-direction:column;align-items:stretch;}
  .subscribe-form .btn{width:100%;}
  .cta-panel{padding:32px 24px;border-radius:20px;}
  .spec-table th,.spec-table td{padding:14px 16px;}
}
@media (max-width:480px){
  body{font-size:16px;}
  .btn{width:100%;}
  .brand-text{font-size:15px;}
  .brand-mark{width:30px;height:30px;font-size:14px;border-radius:9px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:40px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .step-num{width:40px;height:40px;font-size:15px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#0F6E86;
  --c-primary-700:#0A5364;
  --c-primary-050:#E9F3F6;
  --c-accent:#FF7A45;
  --c-accent-050:#FFF2EC;
  --c-ink:#10232E;
  --c-ink-2:#3C5666;
  --c-muted:#7B8C97;
  --c-bg:#F6F9FA;
  --c-surface:#FFFFFF;
  --c-line:rgba(16,35,46,.08);
  --c-line-strong:rgba(15,110,134,.20);
  --c-footer:#0E2A34;
  --r-card:18px;
  --r-sm:12px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 4px 16px rgba(16,60,78,.06);
  --sh-2:0 10px 30px rgba(16,60,78,.10);
  --sh-3:0 20px 50px rgba(16,60,78,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:280ms var(--ease);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:var(--t);}
a:hover{color:var(--c-accent);}
button{font-family:inherit;font-size:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,figure{margin:0;}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.22;font-weight:700;letter-spacing:-0.01em;}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.3;font-weight:700;letter-spacing:-0.01em;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{font-size:16.5px;line-height:1.8;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{margin-bottom:16px;}
.section-head p{color:var(--c-ink-2);font-size:15.5px;line-height:1.8;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-primary);
  background:var(--c-primary-050);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:18px;
}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:sticky;
  top:16px;
  z-index:60;
  padding:0 16px;
}
.nav-shell{
  position:relative;
  width:min(1160px,calc(100% - 32px));
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:0 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:height 240ms var(--ease),box-shadow 240ms var(--ease),background 240ms var(--ease);
}
.site-header.is-scrolled .nav-shell{
  height:56px;
  box-shadow:var(--sh-2);
  background:rgba(255,255,255,.96);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--c-ink);
  font-weight:700;
}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:11px;
  background:var(--c-primary);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:16px;
  font-weight:700;
  flex-shrink:0;
}
.brand-text{font-size:16px;letter-spacing:.01em;white-space:nowrap;}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  color:var(--c-ink-2);
  white-space:nowrap;
  transition:var(--t);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--c-accent);
  transform:translateX(-50%);
  transition:width 240ms var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{width:18px;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{width:18px;}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;
  width:36px;
  height:36px;
  border-radius:10px;
  border:1px solid var(--c-line);
  margin-left:auto;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  transition:var(--t);
}
.nav-toggle span{
  display:block;
  width:16px;
  height:2px;
  border-radius:2px;
  background:var(--c-ink);
  transition:var(--t);
}
.nav-toggle:hover{background:var(--c-primary-050);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15.5px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#F0672F;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:none;box-shadow:none;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-050);color:var(--c-primary-700);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-ghost:active{transform:none;box-shadow:none;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none;transform:none;box-shadow:none;}
.link-more{
  font-size:15px;
  font-weight:600;
  color:var(--c-primary);
  border-bottom:2px solid transparent;
}
.link-more:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}

/* ---------- 页面头部 ---------- */
.page-head{
  background:linear-gradient(180deg,#E9F3F6 0%,rgba(246,249,250,0) 100%);
  padding:88px 0 72px;
}
.page-head-inner{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--c-muted);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--c-primary);}
.breadcrumb a:hover{color:var(--c-accent);}
.breadcrumb .sep{color:var(--c-muted);}
.breadcrumb .current{color:var(--c-muted);}
.page-head h1{margin-bottom:18px;}
.page-head-lead{
  font-size:15.5px;
  line-height:1.8;
  color:var(--c-ink-2);
  max-width:560px;
}
.page-head-media{
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--sh-3);
  background:#fff;
}
.page-head-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:20px;
}

/* ---------- 时间线 + 答疑 ---------- */
.split-7-5{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:start;
}
.timeline-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:40px 36px;
  box-shadow:var(--sh-1);
}
.timeline-head{margin-bottom:32px;}
.timeline-head h2{margin-bottom:14px;font-size:clamp(22px,2.3vw,28px);}
.timeline-head p{font-size:15.5px;color:var(--c-ink-2);line-height:1.8;}
.timeline{
  position:relative;
  padding-left:40px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:4px;
  top:8px;
  bottom:8px;
  width:2px;
  border-radius:2px;
  background:var(--c-primary-050);
}
.timeline li{
  position:relative;
  padding-bottom:32px;
}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:"";
  position:absolute;
  left:-40px;
  top:7px;
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--c-accent);
  box-shadow:0 0 0 4px #fff;
}
.tl-time{
  display:block;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.06em;
  color:var(--c-muted);
  font-variant-numeric:tabular-nums;
  margin-bottom:6px;
}
.tl-title{
  font-size:18px;
  line-height:1.5;
  font-weight:600;
  color:var(--c-ink);
  margin-bottom:8px;
}
.tl-desc{
  font-size:15px;
  line-height:1.75;
  color:var(--c-ink-2);
}

/* ---------- FAQ 手风琴 ---------- */
.faq{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.faq-title{
  padding:26px 24px 18px;
  font-size:17px;
  font-weight:700;
  color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.faq-item + .faq-item{border-top:1px solid var(--c-line);}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px 18px 24px;
  text-align:left;
  font-size:17px;
  line-height:1.5;
  font-weight:600;
  color:var(--c-ink);
  transition:var(--t);
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:4px;
  height:20px;
  border-radius:2px;
  background:var(--c-line);
  transition:var(--t);
}
.faq-item.is-open .faq-q::before{background:var(--c-accent);}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  flex-shrink:0;
  width:24px;
  text-align:center;
  font-size:20px;
  font-weight:400;
  line-height:1;
  color:var(--c-primary);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 260ms var(--ease);
}
.faq-a-inner{
  padding:0 24px 22px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--c-ink-2);
}

/* ---------- 更新与反馈 ---------- */
.info-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:center;
}
.info-media{
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-2);
}
.info-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-card);
  transition:transform 250ms var(--ease);
}
.info-media:hover img{transform:scale(1.03);}
.info-copy h2{margin-bottom:20px;}
.info-copy p{
  font-size:15.5px;
  line-height:1.85;
  color:var(--c-ink-2);
  margin-bottom:18px;
}
.quote{
  position:relative;
  margin-top:26px;
  padding:14px 20px 14px 22px;
  background:var(--c-primary-050);
  border-radius:var(--r-sm);
  font-size:15px;
  line-height:1.8;
  color:var(--c-primary-700);
}
.quote::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  bottom:12px;
  width:4px;
  border-radius:2px;
  background:var(--c-accent);
}
.info-points{
  display:grid;
  gap:14px;
  margin-top:26px;
}
.info-point{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:16px 18px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  box-shadow:var(--sh-1);
  transition:var(--t);
}
.info-point:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-line-strong);}
.info-point .dot{
  flex-shrink:0;
  width:28px;
  height:28px;
  border-radius:50%;
  background:var(--c-accent-050);
  color:var(--c-accent);
  display:grid;
  place-items:center;
  font-size:13px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.info-point b{display:block;font-size:15.5px;color:var(--c-ink);}
.info-point span{font-size:15px;line-height:1.7;color:var(--c-ink-2);}

/* ---------- 分类快捷入口 ---------- */
.quick-links{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.quick-link{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 22px;
  border-radius:var(--r-pill);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  font-size:15px;
  font-weight:600;
  color:var(--c-ink);
  transition:var(--t);
}
.quick-link .arrow{color:var(--c-accent);font-weight:700;transition:var(--t);}
.quick-link:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-line-strong);color:var(--c-primary);}
.quick-link:hover .arrow{transform:translateX(3px);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-primary);
  border-radius:24px;
  padding:56px;
  display:grid;
  grid-template-columns:1fr auto;
  gap:32px;
  align-items:center;
  color:#fff;
  box-shadow:var(--sh-3);
}
.cta-copy h2{color:#fff;margin-bottom:14px;font-size:clamp(22px,2.4vw,30px);}
.cta-copy p{font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.82);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-footer);
  color:rgba(255,255,255,.78);
  margin-top:96px;
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:16px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand .brand-mark{background:var(--c-accent);}
.site-footer p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.72);}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-list{display:grid;gap:12px;}
.footer-list a{
  position:relative;
  display:inline-block;
  font-size:14.5px;
  color:rgba(255,255,255,.78);
  padding-left:0;
  transition:var(--t);
}
.footer-list a::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:2px;
  height:12px;
  border-radius:2px;
  background:var(--c-accent);
  opacity:0;
  transition:var(--t);
}
.footer-list a:hover{color:#fff;padding-left:9px;}
.footer-list a:hover::before{opacity:1;}
.footer-cta-link{color:#fff !important;font-weight:600;}
.footer-cta-link:hover{color:var(--c-accent) !important;}
.footer-bottom{
  margin-top:56px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .split-7-5{gap:36px;}
  .cta-band{padding:48px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .page-head{padding:72px 0 56px;}
  .page-head-inner{grid-template-columns:1fr;gap:36px;}
  .page-head-lead{max-width:none;}
  .split-7-5{grid-template-columns:1fr;gap:36px;}
  .info-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;gap:24px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .site-header{padding:0 12px;top:10px;}
  .nav-shell{width:100%;padding:0 14px;gap:10px;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:12px;
    background:#fff;
    border:1px solid var(--c-line);
    border-radius:20px;
    box-shadow:var(--sh-2);
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-link{
    height:48px;
    padding:0 16px;
    border-radius:12px;
    font-size:15.5px;
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{background:var(--c-primary-050);}
  .timeline-wrap{padding:28px 22px;}
  .timeline{padding-left:34px;}
  .timeline li::before{left:-34px;}
  .cta-band{padding:32px 22px;border-radius:18px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .site-footer{padding:56px 0 24px;margin-top:72px;}
  .info-point{padding:14px 16px;}
}
@media (max-width:479px){
  body{font-size:16px;}
  .brand-text{font-size:15px;}
  .page-head{padding:56px 0 44px;}
  .btn{padding:13px 22px;font-size:15px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-q{font-size:16px;padding:16px 18px 16px 20px;}
  .faq-a-inner{padding:0 20px 20px;}
  .quick-link{width:100%;justify-content:space-between;}
}