/* roulang page: index */
:root{
  --brand:#17586B;
  --brand-dark:#0E3F4F;
  --brand-50:#EAF2F3;
  --brand-100:#D8E7EA;
  --accent:#4E9A8A;
  --accent-50:#EAF4F1;
  --warm:#D9985F;
  --ink:#14202B;
  --ink-2:#4A5764;
  --ink-3:#7B8794;
  --bg:#F6F7F3;
  --surface:#FFFFFF;
  --line:#E3E7E2;
  --line-strong:#CFD6D1;
  --danger:#C0563F;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:24px;
  --sd-1:0 1px 2px rgba(20,32,43,.04),0 8px 24px rgba(20,32,43,.06);
  --sd-2:0 12px 32px rgba(20,32,43,.10);
  --nav-sd:0 6px 28px rgba(23,88,107,.08);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none;padding:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{font-weight:700;line-height:1.3;font-style:normal;letter-spacing:0}
:focus-visible{outline:3px solid rgba(23,88,107,.28);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;padding:12px 24px 0}
.nav-panel{
  max-width:1200px;margin:0 auto;height:72px;
  display:flex;align-items:center;gap:16px;
  padding:0 18px;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--nav-sd);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:36px;height:36px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;
  border-radius:10px;font-size:13px;font-weight:700;letter-spacing:.02em;
}
.brand-name{font-size:18px;font-weight:700;color:var(--ink);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;margin:0 auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:var(--r-sm);
  font-size:14.5px;color:var(--ink-2);white-space:nowrap;
  transition:background 200ms var(--ease),color 200ms var(--ease),transform 200ms var(--ease);
}
.nav-link i{font-size:14px;color:var(--accent)}
.nav-link:hover{background:var(--brand-50);color:var(--brand);transform:translateY(-1px)}
.nav-link.active{background:var(--brand-50);color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);align-items:center;justify-content:center;
  color:var(--brand);background:#fff;
}
.nav-mobile{
  display:none;max-width:1200px;margin:8px auto 0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sd-2);padding:16px;
}
.nav-mobile.open{display:block}
.nav-mobile-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:14px}
.nav-mobile-grid .nav-link{background:var(--brand-50);justify-content:flex-start;padding:12px 14px;font-size:14px}
.nav-mobile-grid .nav-link.active{background:var(--brand-100)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:background 200ms var(--ease),color 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease),border-color 200ms var(--ease);
}
.btn i{font-size:13px;transition:transform 200ms var(--ease)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(23,88,107,.18)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sd-2)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.16)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-50)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.icon-btn{
  width:42px;height:42px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;color:var(--brand);
  transition:background 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease);
}
.icon-btn:hover{background:var(--brand-50);border-color:var(--brand-100);transform:translateY(-1px)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14.5px;font-weight:600;
}
.link-more i{font-size:12px;transition:transform 200ms var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* 通用板块 */
.section{padding:88px 0}
.section--alt{background:#F0F1EC}
.section--white{background:var(--surface)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;
}
.section-title{font-size:clamp(24px,3vw,32px);line-height:1.3;color:var(--ink)}
.section-desc{margin-top:12px;font-size:15.5px;color:var(--ink-2);max-width:640px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-50);color:var(--brand);
  font-size:13px;font-weight:600;
}
.pill i{font-size:12px;color:var(--accent)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand);
  font-size:12.5px;font-weight:600;
}
.badge--accent{background:var(--accent-50);color:var(--accent)}

/* 首屏 */
.hero{padding:56px 0 72px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(23,88,107,.028) 0 1px,transparent 1px 26px);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;
  min-height:560px;
}
.hero-text{display:flex;flex-direction:column;align-items:flex-start;gap:20px}
.hero-title{font-size:clamp(30px,4.4vw,46px);line-height:1.25;font-weight:700;color:var(--ink)}
.hero-sub{font-size:17px;line-height:1.8;color:var(--ink-2);max-width:520px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.trust-row{display:flex;flex-wrap:wrap;gap:20px;margin-top:4px}
.trust-row li{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2)}
.trust-row i{color:var(--accent);font-size:15px}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sd-1);
}
.hero-badge{
  position:absolute;top:16px;left:16px;
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.94);border:1px solid var(--line);
  color:var(--brand);font-size:13px;font-weight:600;
}
.hero-data-card{
  position:absolute;right:16px;bottom:16px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:0 10px 30px rgba(20,32,43,.14);
  padding:14px 20px;
}
.hdc-num{font-size:24px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.hdc-label{font-size:12.5px;color:var(--ink-3)}

/* Bento 服务 */
.bento{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.bento-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.card{
  position:relative;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sd-1);
  padding:24px;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--brand);border-radius:var(--r-md) var(--r-md) 0 0;
  transform:scaleX(0);transform-origin:left;
  transition:transform 220ms var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sd-2);border-color:var(--line-strong)}
.card:hover::before{transform:scaleX(1)}
.bento-lg{display:flex;flex-direction:column;gap:14px;padding:28px}
.bento-img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;margin-bottom:6px}
.card-title{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink)}
.card-text{font-size:15px;color:var(--ink-2);line-height:1.8}
.bento-md{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--accent-50);color:var(--accent);font-size:18px;
}
.bento-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.mini-card{display:flex;flex-direction:column;gap:10px;align-items:flex-start}

/* 数据 */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sd-1);overflow:hidden;
}
.stat{
  padding:32px 24px;text-align:center;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:none}
.stat i{font-size:20px;color:var(--accent);margin-bottom:12px;display:block}
.stat-num{
  font-size:clamp(30px,4vw,44px);font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.15;
}
.stat-num em{font-style:normal;font-size:.5em;font-weight:600;color:var(--warm);margin-left:2px}
.stat-label{margin-top:8px;font-size:14px;color:var(--ink-3)}

/* 案例 */
.case-stack{display:flex;flex-direction:column;gap:24px}
.case-card{
  display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sd-1);padding:28px;
  transition:box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.case-card:hover{box-shadow:var(--sd-2);border-color:var(--line-strong)}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md)}
.case-body{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.case-card--rev .case-media{order:2}
.case-metrics{display:flex;flex-wrap:wrap;gap:28px;padding-top:4px}
.metric strong{display:block;font-size:22px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.3}
.metric span{font-size:13px;color:var(--ink-3)}

/* 方案 */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan{
  position:relative;display:flex;flex-direction:column;gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sd-1);padding:28px;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sd-2)}
.plan--featured{border:2px solid var(--brand);transform:translateY(-12px);box-shadow:var(--sd-2)}
.plan--featured:hover{transform:translateY(-16px)}
.plan-badge{
  position:absolute;top:-13px;left:28px;
  padding:4px 14px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:12.5px;font-weight:600;
}
.plan-name{font-size:19px;font-weight:700;color:var(--ink)}
.plan-desc{font-size:14.5px;color:var(--ink-2)}
.plan-list{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.plan-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--ink-2)}
.plan-list i{color:var(--accent);font-size:13px;margin-top:6px}
.plan .btn{margin-top:auto}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.news-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-sum{
  font-size:14.5px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;gap:8px;margin-top:auto;padding-top:10px;
  font-size:13px;color:var(--ink-3);
  border-top:1px solid var(--line);width:100%;
}
.news-meta .dot{color:var(--line-strong)}
.news-meta i{margin-left:auto;color:var(--brand);font-size:12px}
.news-card:hover .news-meta i{transform:translateX(3px)}
.news-meta i{transition:transform 200ms var(--ease)}
.empty-state{
  grid-column:1/-1;min-height:180px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--r-md);
  padding:32px;text-align:center;
}
.empty-state i{font-size:26px;color:var(--brand-100)}
.empty-state p{font-size:14.5px;color:var(--ink-3)}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-aside{position:sticky;top:112px}
.faq-aside h2{font-size:clamp(24px,3vw,30px);line-height:1.35}
.faq-aside p{margin-top:14px;font-size:15px;color:var(--ink-2)}
.faq-aside-card{
  margin-top:24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sd-1);padding:22px;
  display:flex;flex-direction:column;gap:12px;align-items:flex-start;
}
.faq-aside-card .card-icon{width:40px;height:40px;font-size:16px}
.faq-aside-card strong{font-size:15.5px;color:var(--ink)}
.faq-aside-card span{font-size:14px;color:var(--ink-3)}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--sd-1);overflow:hidden;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.faq-item.open{border-color:var(--brand-100);box-shadow:var(--sd-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q i{font-size:14px;color:var(--brand);transition:transform 220ms var(--ease);flex:none}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 220ms var(--ease);
}
.faq-a p{
  padding:0 22px 20px;font-size:15.5px;line-height:1.85;color:var(--ink-2);
}

/* CTA + 联系 */
.cta-band{
  background:linear-gradient(135deg,var(--brand-50) 0%,#EFF6F4 100%);
  border:1px solid var(--brand-100);border-radius:var(--r-xl);
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  margin-bottom:64px;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);color:var(--ink)}
.cta-band p{margin-top:10px;font-size:15px;color:var(--ink-2)}
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start}
.info-list{display:flex;flex-direction:column;gap:14px}
.info-item{
  display:flex;align-items:flex-start;gap:14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sd-1);padding:20px 22px;
  transition:transform 200ms var(--ease),border-color 200ms var(--ease);
}
.info-item:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.info-item i{font-size:16px;color:var(--accent);margin-top:5px;width:20px;text-align:center;flex:none}
.info-item dt{font-size:13px;color:var(--ink-3);font-weight:600}
.info-item dd{margin:2px 0 0;font-size:15px;color:var(--ink)}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sd-1);padding:32px;
}
.form-card h3{font-size:20px;margin-bottom:8px}
.form-card > p{font-size:14.5px;color:var(--ink-3);margin-bottom:22px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:14px;font-weight:600;color:var(--ink-2)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:#FCFDFC;font-size:15px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease);
}
.field textarea{min-height:130px;resize:vertical}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--line-strong)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(23,88,107,.14);
}
.field--full{grid-column:1/-1}
.field select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237B8794' d='M6 8 0 1.4 1.4 0 6 4.9 10.6 0 12 1.4z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;
}
.form-ok{
  display:none;margin-bottom:18px;padding:12px 16px;
  background:#EDF5EF;border:1px solid #CFE3D4;border-radius:var(--r-sm);
  color:#2F6B45;font-size:14px;
}

/* 页脚 */
.site-footer{background:var(--brand-dark);color:#B9D2D8;padding:64px 0 0;margin-top:0}
.site-footer a{color:#B9D2D8;transition:color 180ms var(--ease)}
.site-footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:5fr 3fr 3fr 3fr;gap:40px}
.footer-brand{display:flex;flex-direction:column;gap:16px;align-items:flex-start}
.footer-brand .brand-mark{background:#fff;color:var(--brand-dark)}
.footer-brand .brand-name{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;max-width:280px}
.footer-tel{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:#fff}
.footer-tel i{color:var(--accent)}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px}
.footer-bottom{
  margin-top:48px;padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:#8FB0B8;
}

/* 骨架 */
.skeleton{background:linear-gradient(90deg,#EEF1ED 25%,#E4E9E4 37%,#EEF1ED 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;border-radius:8px}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}

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

@media (max-width:1279px){
  .section{padding:72px 0}
  .hero-grid{gap:36px}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn{display:none}
  .hero-grid{grid-template-columns:1fr;min-height:auto;gap:32px}
  .bento{grid-template-columns:1fr}
  .bento-side{grid-template-rows:auto;grid-template-columns:1fr 1fr;gap:24px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .site-header{padding:10px 16px 0}
  .nav-panel{height:64px;padding:0 12px;gap:10px}
  .brand-name{font-size:16.5px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .hero{padding:32px 0 48px}
  .hero-cta{width:100%}
  .hero-cta .btn{flex:1}
  .bento-side{grid-template-columns:1fr}
  .bento-row{grid-template-columns:1fr}
  .case-card{grid-template-columns:1fr;gap:20px;padding:20px}
  .case-card--rev .case-media{order:0}
  .plans{grid-template-columns:1fr}
  .plan--featured{transform:none}
  .plan--featured:hover{transform:translateY(-4px)}
  .news-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;gap:20px}
  .cta-band .btn{width:100%}
  .form-card{padding:22px}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-data-card{right:12px;bottom:12px;padding:12px 16px}
}
@media (max-width:480px){
  body{font-size:15.5px}
  .hero-title{font-size:27px}
  .card{padding:18px}
  .stat{padding:24px 16px}
  .stats{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:none}
  .nav-mobile-grid{grid-template-columns:1fr}
  .brand-name{font-size:15px}
}

/* roulang page: category1 */
:root{
  --brand:#17586B;
  --brand-dark:#0E3F4F;
  --brand-50:#EAF2F3;
  --brand-100:#D8E7EA;
  --accent:#4E9A8A;
  --accent-50:#E9F3F0;
  --warm:#D9985F;
  --ink:#14202B;
  --ink-2:#4A5764;
  --ink-3:#7B8794;
  --bg:#F6F7F3;
  --surface:#FFFFFF;
  --line:#E3E7E2;
  --line-strong:#CFD6D1;
  --r-6:6px;
  --r-10:10px;
  --r-16:16px;
  --r-20:20px;
  --r-24:24px;
  --sd-1:0 1px 2px rgba(20,32,43,.04), 0 8px 24px rgba(20,32,43,.06);
  --sd-2:0 12px 32px rgba(20,32,43,.10);
  --sd-nav:0 6px 28px rgba(23,88,107,.08);
  --ease:cubic-bezier(.4,0,.2,1);
  --t:220ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color var(--t) var(--ease);}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.005em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:15px;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(23,88,107,.18);border-radius:var(--r-6);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:12px 24px 0;
}
.nav-panel{
  max-width:1200px;
  margin:0 auto;
  height:72px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:0 16px;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:var(--r-16);
  box-shadow:var(--sd-nav);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand),var(--brand-dark));
  color:#fff;font-size:14px;font-weight:700;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
  font-family:system-ui,Inter,sans-serif;
}
.brand-name{font-size:18px;font-weight:700;color:var(--ink);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:6px;flex:1 1 auto;}
.nav-link{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border-radius:var(--r-10);
  font-size:14.5px;font-weight:500;color:var(--ink-2);
  border:1px solid transparent;
  transition:all var(--t) var(--ease);
  position:relative;white-space:nowrap;
}
.nav-link i{font-size:14px;color:var(--ink-3);transition:color var(--t) var(--ease);}
.nav-link:hover{background:var(--brand-50);color:var(--brand);transform:translateY(-1px);}
.nav-link:hover i{color:var(--brand);}
.nav-link.active{background:var(--brand-50);color:var(--brand);font-weight:600;}
.nav-link.active i{color:var(--brand);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--brand);background:#fff;
  transition:all var(--t) var(--ease);
}
.icon-btn:hover{background:var(--brand-50);border-color:var(--brand);transform:translateY(-1px);}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-10);
  border:1px solid var(--line-strong);background:#fff;color:var(--brand);
  align-items:center;justify-content:center;font-size:15px;
}
.mobile-menu{
  max-width:1200px;margin:10px auto 0;padding:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-16);
  box-shadow:var(--sd-1);display:none;
}
.mobile-menu.open{display:block;}
.mobile-menu .mm-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.mobile-menu a.mm-item{
  display:flex;align-items:center;gap:8px;padding:12px;
  border:1px solid var(--line);border-radius:var(--r-10);
  color:var(--ink-2);font-size:14.5px;background:#fff;
}
.mobile-menu a.mm-item i{color:var(--brand);}
.mobile-menu a.mm-item:hover{background:var(--brand-50);color:var(--brand);}
.mobile-menu .mm-cta{margin-top:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-10);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:all var(--t) var(--ease);
  cursor:pointer;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sd-1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sd-2);}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.18);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-dark);transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:14.5px;
}
.btn-link i{transition:transform var(--t) var(--ease);}
.btn-link:hover i{transform:translateX(2px);}
.btn[disabled],.btn.disabled{opacity:.45;pointer-events:none;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1.5;
}
.badge-green{background:var(--accent-50);color:var(--accent);}
.badge-warm{background:#FBF1E7;color:#B4783F;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13.5px;color:var(--ink-3);margin-bottom:18px;
}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--ink-3);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- Hero ---------- */
.page-hero{
  padding:40px 0 56px;
  position:relative;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.05;pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;
}
.hero-copy h1{
  font-size:clamp(30px,4vw,42px);line-height:1.25;margin:16px 0 18px;
  color:var(--ink);
}
.hero-copy .lede{font-size:16.5px;line-height:1.9;color:var(--ink-2);max-width:560px;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-20);box-shadow:var(--sd-1);
}
.hero-chip{
  position:absolute;bottom:-14px;left:-14px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:12px 16px;box-shadow:var(--sd-1);
  display:flex;align-items:center;gap:10px;
}
.hero-chip .dot{
  width:34px;height:34px;border-radius:10px;background:var(--accent-50);
  color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:14px;
}
.hero-chip b{display:block;font-size:15px;line-height:1.3;}
.hero-chip span{font-size:12.5px;color:var(--ink-3);}

/* ---------- 主体布局 ---------- */
.main-section{padding:0 0 88px;}
.main-grid{
  display:grid;grid-template-columns:264px minmax(0,1fr);
  gap:32px;align-items:start;
}
.toc-card{
  position:sticky;top:100px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-16);
  padding:22px;box-shadow:var(--sd-1);
}
.toc-card h3{font-size:15px;margin-bottom:14px;color:var(--ink);}
.toc-card ol{counter-reset:toc;display:flex;flex-direction:column;gap:4px;}
.toc-card li{counter-increment:toc;}
.toc-card a{
  display:flex;gap:10px;align-items:flex-start;
  padding:9px 10px;border-radius:var(--r-10);
  font-size:14.5px;color:var(--ink-2);line-height:1.6;
  transition:all var(--t) var(--ease);
}
.toc-card a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:system-ui,Inter,sans-serif;font-size:12.5px;
  color:var(--ink-3);padding-top:2px;
}
.toc-card a:hover,.toc-card a.current{background:var(--brand-50);color:var(--brand);}
.toc-card a:hover::before,.toc-card a.current::before{color:var(--brand);}
.toc-note{
  margin-top:16px;padding:14px;border-radius:var(--r-10);
  background:var(--brand-50);font-size:13.5px;color:var(--ink-2);line-height:1.75;
}
.toc-note strong{color:var(--brand);}

/* ---------- 内容区块 ---------- */
.content-block{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-20);
  padding:32px;box-shadow:var(--sd-1);margin-bottom:28px;
}
.content-block:last-child{margin-bottom:0;}
.block-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:10px;}
.block-icon{
  width:44px;height:44px;flex:0 0 44px;border-radius:12px;
  background:var(--brand-50);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.block-head h2{font-size:clamp(21px,2.4vw,26px);line-height:1.35;}
.block-desc{font-size:15.5px;line-height:1.9;color:var(--ink-2);margin:12px 0 24px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-16);
  box-shadow:var(--sd-1);overflow:hidden;position:relative;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
  display:flex;flex-direction:column;
}
.info-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--sd-2);border-color:var(--line-strong);}
.info-card:hover::before{transform:scaleX(1);}
.info-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.info-card .ic-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.info-card .ic-icon{
  width:38px;height:38px;border-radius:10px;background:var(--brand-50);
  color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:15px;
}
.info-card h3{font-size:17px;line-height:1.5;}
.info-card p{font-size:14.5px;line-height:1.85;color:var(--ink-2);}
.info-card .btn-link{margin-top:auto;padding-top:6px;}

/* ---------- 清单区 ---------- */
.checklist-wrap{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:32px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-24);
  padding:32px;box-shadow:var(--sd-1);
}
.checklist-wrap img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-16);
}
.checklist-wrap h2{font-size:clamp(21px,2.4vw,26px);margin-bottom:12px;}
.checklist-wrap .cl-desc{font-size:15px;color:var(--ink-2);line-height:1.9;margin-bottom:18px;}
.check-list{display:flex;flex-direction:column;gap:12px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-2);line-height:1.8;}
.check-list i{
  color:var(--accent);font-size:15px;margin-top:5px;flex:0 0 auto;
}
.check-list b{color:var(--ink);font-weight:600;}

/* ---------- 交叉链接 ---------- */
.cross-section{padding:0 0 88px;}
.cross-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.cross-card{
  display:flex;align-items:center;gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-16);
  padding:26px;box-shadow:var(--sd-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.cross-card:hover{transform:translateY(-4px);box-shadow:var(--sd-2);border-color:var(--line-strong);}
.cross-card .cc-icon{
  width:48px;height:48px;flex:0 0 48px;border-radius:14px;
  background:var(--brand-50);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.cross-card h3{font-size:17.5px;margin-bottom:6px;color:var(--ink);}
.cross-card p{font-size:14.5px;color:var(--ink-2);line-height:1.8;}
.cross-card .cc-arrow{margin-left:auto;color:var(--brand);font-size:16px;flex:0 0 auto;}
.cross-card:hover h3{color:var(--brand);}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--brand-50),#F3F8F7);
  border:1px solid var(--brand-100);border-radius:var(--r-24);
  padding:44px;text-align:center;
}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:14px;}
.cta-band p{font-size:15.5px;color:var(--ink-2);line-height:1.9;max-width:660px;margin:0 auto;}
.cta-band .cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-dark);color:#C7D8DC;
  padding:64px 0 28px;margin-top:8px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer .brand-mark{background:rgba(255,255,255,.14);}
.site-footer .brand-name{color:#fff;}
.footer-brand p{
  font-size:14px;line-height:1.9;color:#A9C0C6;margin:16px 0 18px;max-width:300px;
}
.footer-tel{
  display:inline-flex;align-items:center;gap:8px;
  color:#fff;font-size:15px;font-weight:600;
}
.footer-tel:hover{color:#fff;opacity:.85;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:#A9C0C6;}
.footer-col a{color:#A9C0C6;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13.5px;color:#8CA8AF;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 20px;}
  .site-header{padding:10px 16px 0;}
  .nav-links{display:none;}
  .menu-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual{order:2;}
  .hero-chip{left:16px;bottom:-12px;}
  .main-grid{grid-template-columns:1fr;}
  .toc-card{position:static;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .checklist-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{font-size:15.5px;line-height:1.8;}
  .page-hero{padding:28px 0 44px;}
  .main-section{padding-bottom:56px;}
  .cross-section{padding-bottom:56px;}
  .content-block{padding:22px;border-radius:var(--r-16);}
  .card-grid{grid-template-columns:1fr;}
  .cross-grid{grid-template-columns:1fr;}
  .cta-band{padding:30px 20px;}
  .checklist-wrap{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .hero-copy .lede{font-size:15.5px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .nav-panel{height:64px;padding:0 12px;gap:10px;}
  .brand-name{font-size:16.5px;}
  .btn{padding:11px 18px;font-size:14.5px;}
  .hero-actions .btn{width:100%;}
  .info-card .ic-body{padding:16px;}
  .hero-chip{padding:10px 12px;}
  .mobile-menu .mm-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --brand:#17586B;
  --brand-dark:#0E3F4F;
  --brand-50:#EAF2F3;
  --brand-100:#D8E7EA;
  --accent:#4E9A8A;
  --warm:#D9985F;
  --ink:#14202B;
  --ink-2:#4A5764;
  --ink-3:#7B8794;
  --bg:#F6F7F3;
  --surface:#FFFFFF;
  --line:#E3E7E2;
  --line-strong:#CFD6D1;
  --r-6:6px;--r-10:10px;--r-16:16px;--r-20:20px;--r-24:24px;
  --sd-1:0 1px 2px rgba(20,32,43,.04),0 8px 24px rgba(20,32,43,.06);
  --sd-2:0 12px 32px rgba(20,32,43,.10);
  --sd-nav:0 6px 28px rgba(23,88,107,.08);
  --t:220ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.85;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--brand-100);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:12px 24px 0}
.nav-panel{
  max-width:1200px;margin:0 auto;min-height:72px;
  display:flex;align-items:center;gap:16px;padding:10px 16px;
  border:1px solid var(--line);border-radius:var(--r-16);
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:var(--sd-nav);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;display:grid;place-items:center;border-radius:10px;
  background:var(--brand);color:#fff;font-size:13.5px;font-weight:700;letter-spacing:-.02em;
}
.brand-name{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border-radius:var(--r-10);
  font-size:14.5px;color:var(--ink-2);transition:var(--t);
}
.nav-link i{font-size:14px;color:var(--accent);transition:var(--t)}
.nav-link:hover{background:var(--brand-50);color:var(--brand);transform:translateY(-1px)}
.nav-link:hover i{color:var(--brand)}
.nav-link.active{background:var(--brand-50);color:var(--brand);font-weight:600}
.nav-link.active i{color:var(--brand)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--brand);transition:var(--t);
}
.icon-btn:hover{background:var(--brand-50);border-color:var(--brand-100);transform:translateY(-1px)}
.menu-toggle{
  display:none;align-items:center;gap:7px;padding:9px 14px;border-radius:var(--r-10);
  border:1px solid var(--line);background:#fff;font-size:14.5px;color:var(--ink-2);transition:var(--t);
}
.menu-toggle:hover{background:var(--brand-50);color:var(--brand)}
.mobile-menu{display:none;max-width:1200px;margin:10px auto 0;padding:14px;border:1px solid var(--line);border-radius:var(--r-16);background:#fff;box-shadow:var(--sd-2)}
.mobile-menu.open{display:block}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mobile-grid a{
  display:flex;align-items:center;gap:8px;padding:12px;border-radius:var(--r-10);
  border:1px solid var(--line);font-size:14.5px;color:var(--ink-2);transition:var(--t);
}
.mobile-grid a:hover{background:var(--brand-50);color:var(--brand);border-color:var(--brand-100)}
.mobile-menu .btn{width:100%;margin-top:12px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-10);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;transition:var(--t);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sd-2)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.2)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-50)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.link-more{display:inline-flex;align-items:center;gap:7px;color:var(--brand);font-size:14.5px;font-weight:600}
.link-more i{transition:var(--t)}
.link-more:hover i{transform:translateX(2px)}

/* ---------- badge / tag ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand);font-size:13px;font-weight:600;line-height:1.7;
}
.badge i{font-size:12px}
.badge-soft{background:rgba(78,154,138,.12);color:#2F7A6A}

/* ---------- breadcrumb & article head ---------- */
.page-head{padding:28px 0 0}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13.5px;color:var(--ink-3)}
.breadcrumb a{color:var(--ink-2);transition:var(--t)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-3)}
.article-head{padding:20px 0 8px}
.article-head h1{
  font-size:clamp(28px,3.4vw,36px);line-height:1.32;font-weight:700;color:var(--ink);
  margin:16px 0 18px;max-width:860px;
}
.meta-row{display:flex;align-items:center;gap:10px 16px;flex-wrap:wrap;font-size:13.5px;color:var(--ink-3)}
.meta-row span{display:inline-flex;align-items:center;gap:6px}
.meta-row i{font-size:12.5px;color:var(--accent)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong);display:inline-block}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:32px;align-items:start;padding:24px 0 0}
.article-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-20);
  box-shadow:var(--sd-1);padding:40px;
}
.entry{max-width:760px;font-size:17px;line-height:1.9;color:var(--ink-2);word-wrap:break-word}
.entry p{margin:0 0 1.2em}
.entry > :first-child{margin-top:0}
.entry h2{position:relative;font-size:24px;line-height:1.4;font-weight:700;color:var(--ink);margin:1.9em 0 .75em;padding-left:16px}
.entry h2::before{content:"";position:absolute;left:0;top:6px;width:4px;height:18px;border-radius:2px;background:var(--brand)}
.entry h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--ink);margin:1.6em 0 .6em}
.entry h4{font-size:17px;font-weight:600;color:var(--ink);margin:1.4em 0 .5em}
.entry ul,.entry ol{margin:0 0 1.2em;padding-left:1.35em}
.entry ul{list-style:disc}
.entry ol{list-style:decimal}
.entry li{margin:.35em 0}
.entry blockquote{
  margin:1.4em 0;padding:16px 18px;border-left:3px solid var(--brand);
  background:var(--brand-50);border-radius:0 var(--r-10) var(--r-10) 0;color:var(--ink-2);
}
.entry blockquote p:last-child{margin-bottom:0}
.entry img{border-radius:12px;margin:1.4em auto}
.entry figure{margin:1.4em 0}
.entry figcaption{text-align:center;font-size:13px;color:var(--ink-3);margin-top:8px}
.entry a{color:var(--brand);border-bottom:1px solid var(--brand-100);transition:var(--t)}
.entry a:hover{border-bottom-color:var(--brand)}
.entry table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-10);overflow:hidden}
.entry th{background:var(--brand-50);color:var(--brand);font-weight:600;text-align:left;padding:11px 14px;border-bottom:1px solid var(--line)}
.entry td{padding:11px 14px;border-bottom:1px solid var(--line)}
.entry tbody tr:nth-child(even) td{background:#FAFBF9}
.entry pre{background:#F3F5F2;border:1px solid var(--line);border-radius:var(--r-10);padding:16px;overflow:auto;font-size:14px;line-height:1.7;margin:1.4em 0}
.entry code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
.entry hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* ---------- empty state ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:260px;text-align:center;padding:32px 20px;
}
.empty-state i{font-size:34px;color:var(--brand-100)}
.empty-state p{font-size:16px;color:var(--ink-3)}

/* ---------- article footer ---------- */
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:26px}
.tag-label{font-size:13.5px;color:var(--ink-3)}
.tag{
  padding:5px 13px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:13px;color:var(--ink-2);transition:var(--t);
}
.tag:hover{border-color:var(--brand-100);background:var(--brand-50);color:var(--brand)}
.action-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:22px}

/* ---------- side card ---------- */
.side-col{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-16);box-shadow:var(--sd-1);padding:22px}
.side-card h3{font-size:16px;font-weight:700;color:var(--ink);padding-bottom:12px;border-bottom:1px solid var(--line)}
.side-list li{padding:13px 0;border-bottom:1px dashed var(--line)}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list a{display:block;font-size:14.5px;line-height:1.65;color:var(--ink);transition:var(--t)}
.side-list a:hover{color:var(--brand)}
.side-list .side-date{display:block;margin-top:5px;font-size:12.5px;color:var(--ink-3)}
.side-cta{background:linear-gradient(140deg,#EAF2F3,#F5FAF8);border:1px solid var(--brand-100)}
.side-cta h3{border-bottom:0;padding-bottom:6px}
.side-cta p{font-size:14px;color:var(--ink-2);margin:4px 0 16px}

/* ---------- related cards ---------- */
.section-title-row{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin:56px 0 22px}
.section-title-row h2{font-size:clamp(22px,2.4vw,26px);font-weight:700;color:var(--ink)}
.section-title-row p{font-size:14px;color:var(--ink-3);margin-top:6px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-16);box-shadow:var(--sd-1);padding:24px;transition:var(--t);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sd-2);border-color:var(--line-strong)}
.card .cover{aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:var(--brand-50);margin-bottom:16px}
.card .cover img{width:100%;height:100%;object-fit:cover}
.card h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);margin:12px 0 8px}
.card p{font-size:14.5px;line-height:1.75;color:var(--ink-2);flex:1}
.card .card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;font-size:13px;color:var(--ink-3)}
.card .card-foot i{color:var(--brand);transition:var(--t)}
.card:hover .card-foot i{transform:translateX(3px)}

/* ---------- CTA band ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  margin-top:64px;padding:44px 48px;border:1px solid var(--brand-100);border-radius:var(--r-24);
  background:linear-gradient(135deg,#EAF2F3 0%,#F4F9F7 100%);
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;color:var(--ink)}
.cta-band p{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.78);margin-top:88px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-mark{background:#fff;color:var(--brand-dark)}
.footer-brand .brand-name{color:#fff}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:280px}
.footer-tel{display:inline-flex;align-items:center;gap:8px;margin-top:14px;color:#fff;font-size:16px;font-weight:600}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col li{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a{transition:var(--t)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.58);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .menu-toggle{display:inline-flex}
  .layout{grid-template-columns:1fr;gap:28px}
  .side-col{position:static}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .site-header{padding:10px 16px 0}
  .container{padding:0 16px}
  .nav-panel{padding:10px 12px;gap:10px}
  .brand-name{font-size:16px}
  .article-body{padding:22px;border-radius:var(--r-16)}
  .entry{font-size:15.5px;line-height:1.8}
  .entry h2{font-size:21px}
  .entry h3{font-size:18px}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 22px;gap:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-top:48px;margin-top:64px}
  .mobile-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .article-head h1{font-size:24px}
  .article-body{padding:18px}
  .card{padding:18px}
  .side-card{padding:18px}
  .section-title-row{margin-top:44px}
  .btn{padding:11px 18px;font-size:14.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --brand:#17586B;
  --brand-dark:#0E3F4F;
  --brand-50:#EAF2F3;
  --brand-100:#D8E7EA;
  --accent:#4E9A8A;
  --accent-50:#E9F3F0;
  --warm:#D9985F;
  --ink:#14202B;
  --ink-2:#4A5764;
  --ink-3:#7B8794;
  --bg:#F6F7F3;
  --surface:#FFFFFF;
  --line:#E3E7E2;
  --line-strong:#CFD6D1;
  --danger:#C0563F;
  --r-6:6px;
  --r-10:10px;
  --r-16:16px;
  --r-20:20px;
  --r-24:24px;
  --sd-1:0 1px 2px rgba(20,32,43,.04),0 8px 24px rgba(20,32,43,.06);
  --sd-2:0 12px 32px rgba(20,32,43,.10);
  --sd-nav:0 6px 28px rgba(23,88,107,.08);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
figure{margin:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(23,88,107,.18);border-radius:var(--r-6);}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:16px 0 8px;
}
.nav-panel{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
  padding:10px 18px;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:var(--r-16);
  box-shadow:var(--sd-nav);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  background:var(--brand);
  color:#fff;
  border-radius:10px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
}
.brand-name{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 auto;
  justify-content:center;
  flex-wrap:wrap;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:var(--r-10);
  font-size:14.5px;
  font-weight:500;
  color:var(--ink-2);
  border-bottom:2px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.nav-link i{font-size:14px;color:var(--accent);}
.nav-link:hover{background:var(--brand-50);color:var(--brand);transform:translateY(-1px);}
.nav-link.active{
  background:var(--brand-50);
  color:var(--brand);
  font-weight:600;
  border-bottom-color:var(--brand);
}
.nav-link.active i{color:var(--brand);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--brand);
  background:#fff;
  transition:background-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.icon-btn:hover{background:var(--brand-50);transform:translateY(-1px);box-shadow:var(--sd-1);}
.menu-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:9px 14px;
  border-radius:var(--r-10);
  border:1px solid var(--line-strong);
  background:#fff;
  color:var(--ink-2);
  font-size:14.5px;
  font-weight:600;
  cursor:pointer;
}
.mobile-panel{
  display:none;
  margin-top:10px;
  padding:16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-16);
  box-shadow:var(--sd-1);
}
.mobile-panel.open{display:block;}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px;}
.mobile-grid .nav-link{justify-content:flex-start;background:var(--bg);border-bottom:none;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-10);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sd-2);}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.18);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-dark);transform:translateY(-1px);}
.btn-sm{padding:10px 16px;font-size:14.5px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--brand);
}
.link-arrow i{transition:transform .2s var(--ease);font-size:12px;}
.link-arrow:hover i{transform:translateX(2px);}

/* ---------- badges ---------- */
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--brand-50);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
}
.pill-accent{background:var(--accent-50);color:#2E6B5F;}
.pill-warm{background:#FBF1E6;color:#A96A32;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:#FBFBF7;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--accent);
  letter-spacing:.06em;margin-bottom:12px;
}
h1.page-title{font-size:clamp(30px,4.4vw,44px);line-height:1.25;font-weight:700;margin-bottom:16px;}
h2.sec-title{font-size:clamp(24px,3vw,32px);line-height:1.3;margin-bottom:14px;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
.lead{font-size:16.5px;line-height:1.9;color:var(--ink-2);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:40px 0 72px;
  background:
    radial-gradient(900px 320px at 88% -10%, rgba(78,154,138,.10), transparent 70%),
    linear-gradient(180deg,#FBFCF9 0%, var(--bg) 100%);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(115deg, rgba(23,88,107,.05) 1px, transparent 1px);
  background-size:64px 64px;
  opacity:.5;
  pointer-events:none;
}
.breadcrumb{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--ink-3);
  margin-bottom:28px;
}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--ink-3);}
.hero-grid{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:5fr 6fr;
  gap:48px;
  align-items:center;
}
.hero-copy .lead{max-width:520px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);font-weight:500;}
.trust-item i{color:var(--accent);font-size:15px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-20);
  border:1px solid var(--line);
  box-shadow:var(--sd-1);
}
.hero-badge{
  position:absolute;
  top:18px;left:18px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  border-radius:999px;
  padding:6px 14px;
  font-size:13px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:6px;
  box-shadow:var(--sd-1);
}
.hero-card{
  position:absolute;
  right:-6px;bottom:-18px;
  width:250px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-16);
  padding:16px 18px;
  box-shadow:var(--sd-2);
}
.hero-card .k{font-size:13px;color:var(--ink-3);margin-bottom:6px;}
.hero-card .v{font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.5;}

/* ---------- generic grids ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}

.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-16);
  box-shadow:var(--sd-1);
  padding:24px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sd-2);border-color:var(--line-strong);}
.card-media{
  border-radius:var(--r-10);
  overflow:hidden;
  margin-bottom:18px;
  border:1px solid var(--line);
}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.card h3{margin-bottom:10px;}
.card p{font-size:15px;color:var(--ink-2);line-height:1.8;}
.card-ico{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--brand-50);
  color:var(--brand);
  font-size:18px;
  margin-bottom:16px;
}

/* ---------- compare table ---------- */
.compare-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-20);
  box-shadow:var(--sd-1);
  overflow:hidden;
}
.compare-scroll{overflow-x:auto;}
table.compare{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:15px;
}
table.compare thead th{
  background:var(--brand-50);
  color:var(--brand);
  font-size:14px;
  font-weight:700;
  text-align:left;
  padding:16px 22px;
  border-bottom:1px solid var(--brand-100);
  white-space:nowrap;
}
table.compare tbody th{
  text-align:left;
  font-weight:600;
  color:var(--ink);
  padding:16px 22px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
  width:170px;
  background:#FCFCFA;
}
table.compare tbody td{
  padding:16px 22px;
  color:var(--ink-2);
  border-bottom:1px solid var(--line);
  line-height:1.75;
}
table.compare tbody tr:nth-child(even) td{background:#FAFBF8;}
table.compare tbody tr:last-child th,
table.compare tbody tr:last-child td{border-bottom:none;}
.cell-flag{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;}
.cell-flag i{font-size:13px;color:var(--accent);}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:10px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--sd-1);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:transparent;
  border:none;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
}
.faq-q .faq-ico{
  flex:0 0 auto;
  width:28px;height:28px;
  display:grid;place-items:center;
  border-radius:50%;
  background:var(--brand-50);
  color:var(--brand);
  font-size:12px;
  transition:transform .22s var(--ease);
}
.faq-item.open .faq-ico{transform:rotate(180deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s var(--ease);
}
.faq-item.open .faq-a{max-height:420px;}
.faq-a p{
  padding:0 22px 20px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--ink-2);
}

/* ---------- cross links ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.cross-card{
  display:flex;
  align-items:flex-start;
  gap:18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-16);
  padding:26px;
  box-shadow:var(--sd-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.cross-card:hover{transform:translateY(-4px);box-shadow:var(--sd-2);border-color:var(--line-strong);}
.cross-card .cross-ico{
  flex:0 0 auto;
  width:46px;height:46px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--accent-50);
  color:#2E6B5F;
  font-size:18px;
}
.cross-card h3{font-size:18px;margin-bottom:8px;}
.cross-card p{font-size:14.5px;color:var(--ink-2);margin-bottom:12px;}

/* ---------- cta band ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--brand-50) 0%, #EAF4F1 100%);
  border:1px solid var(--brand-100);
  border-radius:var(--r-24);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:10px;}
.cta-band p{font-size:15.5px;color:var(--ink-2);max-width:620px;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- contact strip ---------- */
.contact-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-top:36px;
}
.contact-unit{
  display:flex;align-items:center;gap:12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-16);
  padding:18px 20px;
  box-shadow:var(--sd-1);
}
.contact-unit i{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  background:var(--brand-50);
  color:var(--brand);
  font-size:15px;
  flex:0 0 auto;
}
.contact-unit .lbl{font-size:13px;color:var(--ink-3);}
.contact-unit .val{font-size:14.5px;font-weight:600;color:var(--ink);word-break:break-all;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--brand-dark);
  color:#CFE0E4;
  margin-top:88px;
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-mark{background:#fff;color:var(--brand-dark);}
.footer-brand p{
  margin:16px 0 18px;
  font-size:14.5px;
  line-height:1.8;
  color:#A9C6CC;
  max-width:300px;
}
.footer-tel{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:#fff;
}
.footer-tel:hover{color:#fff;}
.footer-col h4{
  font-size:15px;
  color:#fff;
  margin-bottom:16px;
  font-weight:600;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14.5px;color:#A9C6CC;line-height:1.7;}
.footer-col a{color:#A9C6CC;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13.5px;
  color:#9BB8BE;
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .section{padding:72px 0;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .menu-toggle{display:inline-flex;}
  .nav-actions .btn{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media{order:2;}
  .hero-card{right:12px;bottom:-16px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .contact-strip{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .nav-panel{padding:10px 14px;gap:12px;}
  .brand-name{font-size:16.5px;}
  .grid-3,.grid-2,.cross-grid,.contact-strip{grid-template-columns:1fr;}
  .page-hero{padding:24px 0 56px;}
  .hero-card{position:static;width:100%;margin-top:16px;}
  .hero-badge{top:14px;left:14px;}
  .cta-band{padding:28px 22px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{width:100%;}
  .card{padding:20px;}
  .faq-q{font-size:15.5px;padding:16px 18px;}
  .faq-a p{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .site-footer{margin-top:56px;padding:48px 0 24px;}
}
@media (max-width:480px){
  body{font-size:15.5px;line-height:1.8;}
  .brand-name{font-size:15.5px;}
  .brand-mark{width:32px;height:32px;font-size:12.5px;}
  h1.page-title{font-size:26px;}
  h2.sec-title{font-size:22px;}
  h3{font-size:18px;}
  .card{padding:16px;}
  .mobile-grid{grid-template-columns:1fr;}
  .trust-row{gap:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category2 */
:root{
  --brand:#17586B;
  --brand-dark:#0E3F4F;
  --brand-50:#EAF2F3;
  --brand-100:#D8E7EA;
  --accent:#4E9A8A;
  --accent-50:#E9F3F0;
  --accent-ink:#2F6E5F;
  --warm:#D9985F;
  --ink:#14202B;
  --ink-2:#4A5764;
  --ink-3:#7B8794;
  --bg:#F6F7F3;
  --surface:#FFFFFF;
  --line:#E3E7E2;
  --line-strong:#CFD6D1;
  --r-1:6px;
  --r-2:10px;
  --r-3:16px;
  --r-4:20px;
  --r-5:24px;
  --r-pill:999px;
  --sd-1:0 1px 2px rgba(20,32,43,.04), 0 8px 24px rgba(20,32,43,.06);
  --sd-2:0 12px 32px rgba(20,32,43,.10);
  --sd-nav:0 6px 28px rgba(23,88,107,.08);
  --t:.22s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--t)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
[hidden]{display:none !important}
h1{font-size:clamp(30px,4.4vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:16px;line-height:1.5;font-weight:600}
p{color:var(--ink-2)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--white{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent-ink);letter-spacing:.02em;margin-bottom:12px}
.section-head h2{margin-bottom:12px}
.section-head p{font-size:16px;line-height:1.85}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:16px 24px 0}
.nav-panel{
  position:relative;
  max-width:1200px;
  margin:0 auto;
  min-height:72px;
  display:flex;
  align-items:center;
  gap:20px;
  padding:12px 16px;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-3);
  box-shadow:var(--sd-nav);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;
  font-size:14px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 6px 16px rgba(23,88,107,.24);
}
.brand-name{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:6px;margin:0 auto}
.nav-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-2);
  font-size:14.5px;font-weight:500;color:var(--ink-2);
  border:1px solid transparent;
  transition:background var(--t),color var(--t),transform var(--t),border-color var(--t);
}
.nav-link i{font-size:14px;color:var(--ink-3);transition:color var(--t)}
.nav-link:hover{background:var(--brand-50);color:var(--brand);transform:translateY(-1px)}
.nav-link:hover i{color:var(--brand)}
.nav-link.active{background:var(--brand-50);color:var(--brand);font-weight:600;box-shadow:inset 0 -2px 0 var(--brand)}
.nav-link.active i{color:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--brand);
  background:var(--surface);
  transition:background var(--t),transform var(--t),box-shadow var(--t);
}
.icon-btn:hover{background:var(--brand-50);transform:translateY(-1px);box-shadow:var(--sd-1)}
.menu-toggle{
  display:none;
  width:42px;height:42px;border-radius:var(--r-2);
  border:1px solid var(--line-strong);background:var(--surface);
  color:var(--brand);place-items:center;
}
.mobile-panel{
  position:absolute;left:0;right:0;top:calc(100% + 10px);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-3);
  box-shadow:var(--sd-2);
  padding:16px;
  display:grid;gap:12px;
}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mobile-link{
  display:flex;align-items:center;gap:10px;
  padding:12px;border-radius:var(--r-2);
  border:1px solid var(--line);background:var(--bg);
  font-size:14.5px;font-weight:500;color:var(--ink-2);
}
.mobile-link i{color:var(--brand)}
.mobile-link.active{background:var(--brand-50);color:var(--brand);border-color:var(--brand-100);font-weight:600}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-2);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn i{font-size:13px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(23,88,107,.18)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sd-2)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.18)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-50);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.btn:focus-visible,.icon-btn:focus-visible,.menu-toggle:focus-visible,.nav-link:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(23,88,107,.20)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;font-size:14.5px}
.link-arrow i{font-size:12px;transition:transform var(--t)}
.link-arrow:hover i{transform:translateX(2px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);
  background:var(--brand-50);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1.4;
}
.badge i{font-size:12px}
.badge-accent{background:var(--accent-50);color:var(--accent-ink)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--ink-3)}

/* ---------- Hero ---------- */
.page-hero{padding:44px 0 8px}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center}
.hero-copy h1{margin:16px 0 16px}
.hero-lead{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:56ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.hero-points li{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);font-weight:500}
.hero-points i{color:var(--accent);font-size:14px}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-4);
  border:1px solid var(--line);
  box-shadow:var(--sd-1);
}
.float-card{
  position:absolute;left:-14px;bottom:-18px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-3);box-shadow:var(--sd-2);
  padding:14px 18px;display:flex;align-items:center;gap:12px;
}
.float-card .num{font-size:24px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1}
.float-card .txt{font-size:13px;color:var(--ink-3);line-height:1.5}
.float-badge{
  position:absolute;right:16px;top:16px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:6px 14px;font-size:13px;font-weight:600;color:var(--brand);
}

/* ---------- 卡片通用 ---------- */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-3);
  box-shadow:var(--sd-1);
  padding:24px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sd-2);border-color:var(--line-strong)}
.card-title{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px;color:var(--ink)}
.card p{font-size:15px;line-height:1.8}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  background:var(--brand-50);color:var(--brand);
  display:grid;place-items:center;font-size:17px;margin-bottom:16px;
}
.card-icon.accent{background:var(--accent-50);color:var(--accent-ink)}

/* ---------- Bento 功能概览 ---------- */
.bento{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.bento-main{
  position:relative;overflow:hidden;
  display:flex;flex-direction:column;gap:18px;
  padding:0;
}
.bento-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.bento-main .bento-body{padding:0 28px 28px}
.bento-main h3{font-size:22px;margin-bottom:10px}
.bento-main p{font-size:15.5px;margin-bottom:16px}
.check-list{display:grid;gap:10px;margin:0 0 18px}
.check-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--ink-2)}
.check-list i{color:var(--accent);font-size:14px;margin-top:6px}
.bento-side{display:grid;gap:24px}
.bento-side .card{display:flex;flex-direction:column;justify-content:center}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.step{padding:0 22px 0 0;position:relative}
.step-top{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.step-num{
  flex:0 0 auto;
  width:52px;height:52px;border-radius:50%;
  background:var(--surface);border:1px solid var(--brand-100);
  color:var(--brand);font-weight:700;font-size:18px;
  font-variant-numeric:tabular-nums;
  display:grid;place-items:center;
  box-shadow:var(--sd-1);
}
.step-line{flex:1 1 auto;height:2px;border-radius:2px;background:var(--brand-100)}
.step:last-child .step-line{background:linear-gradient(90deg,var(--brand-100),transparent)}
.step h3{font-size:18px;margin-bottom:10px}
.step p{font-size:15px;line-height:1.8}
.step-note{display:inline-flex;align-items:center;gap:8px;margin-top:14px;font-size:13px;color:var(--ink-3)}
.step-note i{color:var(--warm)}

/* ---------- 使用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:start}
.scene-aside{position:sticky;top:112px}
.scene-aside .card{background:linear-gradient(180deg,#fff 0%,var(--brand-50) 100%)}
.scene-list{display:grid;gap:16px}
.scene-item{
  display:grid;grid-template-columns:48px 1fr;gap:16px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-3);padding:22px 24px;
  box-shadow:var(--sd-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.scene-item:hover{transform:translateY(-3px);box-shadow:var(--sd-2);border-color:var(--line-strong)}
.scene-item .idx{
  width:48px;height:48px;border-radius:12px;
  background:var(--brand-50);color:var(--brand);
  display:grid;place-items:center;font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.scene-item h3{font-size:17px;margin-bottom:6px}
.scene-item p{font-size:15px;line-height:1.8}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:start}
.faq-aside{position:sticky;top:112px}
.faq-aside h2{margin-bottom:14px}
.faq-aside p{font-size:15.5px;margin-bottom:20px}
.aside-card{
  background:var(--brand-50);
  border:1px solid var(--brand-100);
  border-radius:var(--r-3);
  padding:20px;
}
.aside-card h4{margin-bottom:8px;color:var(--brand-dark)}
.aside-card p{font-size:14px;color:var(--ink-2);margin-bottom:14px}
.faq-list{display:grid;gap:10px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:12px;overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--sd-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q i{color:var(--brand);transition:transform 220ms cubic-bezier(.4,0,.2,1);flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms cubic-bezier(.4,0,.2,1)}
.faq-a p{padding:0 20px 20px;font-size:15.5px;line-height:1.85}

/* ---------- 交叉链接 ---------- */
.cross-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.cross-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-3);padding:26px;box-shadow:var(--sd-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.cross-card:hover{transform:translateY(-4px);box-shadow:var(--sd-2);border-color:var(--line-strong)}
.cross-card h3{font-size:19px}
.cross-card p{font-size:15px;line-height:1.8}
.cross-card .link-arrow{margin-top:auto}

/* ---------- CTA ---------- */
.cta-banner{
  background:linear-gradient(135deg,var(--brand-50) 0%,#fff 62%);
  border:1px solid var(--brand-100);
  border-radius:var(--r-5);
  padding:44px;
  display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
  box-shadow:var(--sd-1);
}
.cta-banner h2{margin-bottom:10px}
.cta-banner p{font-size:16px;max-width:62ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:#CBDDE2;margin-top:88px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .brand-name{color:#fff}
.footer-brand p{color:#9FBAC2;font-size:14.5px;line-height:1.8;margin:16px 0 16px;max-width:34ch}
.footer-tel{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:#fff}
.footer-tel i{color:var(--accent)}
.footer-col h4{color:#fff;margin-bottom:16px;font-size:15.5px}
.footer-col ul{display:grid;gap:10px}
.footer-col li,.footer-col a{font-size:14.5px;color:#9FBAC2;line-height:1.7}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#8FAAB2;
}

/* ---------- 骨架 ---------- */
.skeleton{background:linear-gradient(90deg,#EDEFEA 25%,#E4E7E1 37%,#EDEFEA 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;border-radius:var(--r-2)}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .section{padding:72px 0}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-actions .btn{display:none}
  .menu-toggle{display:grid}
  .nav-links-mobile{display:grid}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-figure{order:2}
  .bento{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr;gap:32px 0}
  .scene-grid,.faq-grid{grid-template-columns:1fr;gap:28px}
  .scene-aside,.faq-aside{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  body{font-size:15.5px;line-height:1.8}
  .container{padding:0 16px}
  .site-header{padding:12px 16px 0}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .page-hero{padding:28px 0 4px}
  .brand-name{font-size:16.5px}
  .hero-grid{gap:26px}
  .hero-cta .btn{width:100%}
  .hero-points{gap:14px}
  .steps{grid-template-columns:1fr}
  .step{padding-right:0}
  .cross-grid{grid-template-columns:1fr}
  .cta-banner{grid-template-columns:1fr;padding:28px}
  .cta-actions .btn{width:100%}
  .bento-main .bento-body{padding:0 20px 22px}
  .card{padding:20px}
  .float-card{left:12px;bottom:-14px;padding:12px 14px}
  .float-card .num{font-size:20px}
  .mobile-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:56px;padding:48px 0 24px}
}
@media (max-width:480px){
  .container{padding:0 14px}
  .card{padding:16px}
  .scene-item{grid-template-columns:1fr;gap:12px}
  .faq-q{font-size:15px;padding:16px}
  .faq-a p{padding:0 16px 16px}
  .cta-banner{padding:22px}
  .hero-points li{font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}