/* roulang page: index */
:root{
  --ink-900:#0E1B2A; --ink-700:#2C3E52; --ink-500:#5A6B7F; --ink-300:#93A1B2;
  --brand-700:#123A66; --brand-600:#1B5FA8; --brand-100:#E8F1FB;
  --accent-500:#E08A2E; --accent-100:#FDF1DF; --ok-500:#2E9E7E;
  --bg:#F5F7FA; --surface:#FFFFFF; --line:#E3E9F0;
  --radius-btn:10px; --radius-card:16px; --radius-big:20px;
  --shadow-1:0 1px 2px rgba(14,27,42,.05);
  --shadow-2:0 6px 20px rgba(14,27,42,.07);
  --shadow-3:0 14px 34px rgba(14,27,42,.12);
  --font-sans: system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink-500);
  font-family:var(--font-sans);font-size:16px;line-height:1.8;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:600;line-height:1.35;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){ .container{padding:0 32px;} }

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  transition:background .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-2);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px;}
.logo{display:flex;align-items:center;gap:10px;min-height:44px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand-600);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  box-shadow:0 4px 12px rgba(27,95,168,.28);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.3px;white-space:nowrap;}
.logo-sub{display:block;font-size:11px;font-weight:500;color:var(--ink-300);letter-spacing:.4px;line-height:1;}
.main-nav{display:none;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  font-size:15px;color:var(--ink-700);border-radius:8px;transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--brand-600);background:rgba(232,241,251,.75);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid transparent;border-radius:10px;color:var(--ink-700);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.icon-btn:hover{background:rgba(232,241,251,.85);color:var(--brand-600);border-color:var(--line);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 2px 8px rgba(224,138,46,.28);}
.btn-primary:hover{background:#c9781f;transform:translateY(-1px);box-shadow:0 10px 22px rgba(224,138,46,.32);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 1px 4px rgba(224,138,46,.3);}
.btn-secondary{background:#fff;color:var(--brand-600);border-color:var(--line);box-shadow:var(--shadow-1);}
.btn-secondary:hover{border-color:var(--brand-600);box-shadow:var(--shadow-2);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-ghost:hover{background:var(--accent-500);border-color:var(--accent-500);color:#fff;}
.btn-link{color:var(--brand-600);font-weight:600;display:inline-flex;align-items:center;gap:6px;min-height:44px;}
.btn-link:hover{color:var(--accent-500);}
.header-cta-login{display:none;}
.header-cta-download{display:none;}
.hamburger{
  width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  background:#fff;border:1px solid var(--line);border-radius:10px;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-700);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

@media (min-width:1024px){
  .main-nav{display:flex;}
  .hamburger{display:none;}
  .header-cta-login{display:inline-flex;}
  .header-cta-download{display:inline-flex;}
}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:200;visibility:hidden;}
.drawer.is-open{visibility:visible;}
.drawer-mask{position:absolute;inset:0;background:rgba(14,27,42,.42);opacity:0;transition:opacity .24s ease;}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;top:0;right:0;width:84%;max-width:344px;height:100%;background:#fff;
  transform:translateX(100%);transition:transform .26s ease;display:flex;flex-direction:column;
  box-shadow:-10px 0 34px rgba(14,27,42,.18);
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;font-size:20px;color:var(--ink-700);line-height:1;}
.drawer-body{padding:12px 12px 20px;overflow-y:auto;flex:1;}
.drawer-group-title{font-size:12px;letter-spacing:.8px;color:var(--ink-300);padding:14px 10px 6px;}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 12px;border-radius:10px;color:var(--ink-700);font-size:15px;}
.drawer-link:hover{background:var(--brand-100);color:var(--brand-600);}
.drawer-link.is-active{background:var(--brand-100);color:var(--brand-600);font-weight:600;}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){ .section{padding:96px 0;} }
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:32px;}
.section-title{font-size:clamp(22px,2.8vw,30px);font-weight:600;letter-spacing:-.3px;}
.section-desc{margin-top:10px;font-size:15px;color:var(--ink-500);max-width:680px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;letter-spacing:.6px;
  color:var(--brand-600);background:var(--brand-100);border-radius:999px;padding:5px 12px;margin-bottom:12px;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:126px 0 64px;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.9) 42%,rgba(255,255,255,.62) 68%,rgba(245,247,250,.35) 100%),
                   url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;background-repeat:no-repeat;
}
@media (min-width:1024px){ .hero{padding:150px 0 96px;} }
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;}
@media (min-width:1024px){ .hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;} }
.hero h1{
  font-size:clamp(28px,4.2vw,44px);font-weight:700;letter-spacing:-.5px;color:var(--ink-900);
}
.hero-sub{margin-top:16px;font-size:18px;color:var(--ink-700);font-weight:500;max-width:520px;}
.hero-meta{margin-top:14px;font-size:14px;color:var(--ink-300);display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;}
.hero-meta b{color:var(--ink-700);font-weight:600;}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;}
.trust-row{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px;}
.trust-chip{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-700);
  background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:999px;padding:6px 13px;
  box-shadow:var(--shadow-1);
}
.trust-chip i{width:8px;height:8px;border-radius:50%;background:var(--ok-500);display:inline-block;}
.hero-visual{position:relative;}
.hero-shot{
  border-radius:var(--radius-big);overflow:hidden;box-shadow:0 24px 48px rgba(14,27,42,.16);
  transform:perspective(1200px) rotateY(-6deg) rotateX(2deg);
  background:#fff;border:1px solid var(--line);
}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.badge-float{
  position:absolute;left:-10px;bottom:22px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:12px 16px;box-shadow:var(--shadow-3);display:flex;align-items:center;gap:10px;
}
.badge-float .bf-num{font-size:22px;font-weight:700;color:var(--accent-500);letter-spacing:-.5px;}
.badge-float .bf-label{font-size:12px;color:var(--ink-500);line-height:1.4;}
@media (max-width:1023px){ .hero-shot{transform:none;} .badge-float{left:auto;right:12px;bottom:-14px;} }

/* ---------- 价值带 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
@media (min-width:1024px){ .value-grid{grid-template-columns:repeat(4,1fr);gap:20px;} }
.value-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 20px;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease;
}
.value-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-3);}
.value-icon{
  width:42px;height:42px;border-radius:12px;background:var(--brand-100);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.value-icon svg{width:21px;height:21px;}
.value-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.value-card p{font-size:14px;line-height:1.7;color:var(--ink-500);}

/* ---------- 轮播 ---------- */
.carousel{position:relative;border-radius:var(--radius-big);overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-2);}
.carousel-viewport{overflow:hidden;}
.carousel-track{display:flex;transition:transform .45s cubic-bezier(.4,0,.2,1);}
.carousel-slide{flex:0 0 100%;position:relative;}
.carousel-slide img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.slide-caption{
  position:absolute;left:0;right:0;bottom:0;padding:22px 24px;
  background:linear-gradient(to top,rgba(14,27,42,.78),rgba(14,27,42,0));
  color:#fff;font-size:16px;font-weight:600;
}
.carousel-btn{
  position:absolute;top:50%;transform:translateY(-50%);
  width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.6);
  background:rgba(255,255,255,.72);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;color:var(--ink-900);font-size:16px;
  transition:background .18s ease,color .18s ease;
}
.carousel-btn:hover{background:#fff;color:var(--brand-600);}
.carousel-btn.prev{left:14px;}
.carousel-btn.next{right:14px;}
.carousel-dots{display:flex;justify-content:center;gap:8px;padding:16px 0 18px;}
.carousel-dots button{
  width:8px;height:8px;border-radius:999px;border:none;background:#C9D4E1;padding:0;
  transition:width .22s ease,background .22s ease;
}
.carousel-dots button.is-active{width:24px;background:var(--brand-600);}

/* ---------- 系统要求 ---------- */
.req-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:1024px){ .req-grid{grid-template-columns:1fr 1fr;gap:26px;} }
.req-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow-1);}
.req-card h3{font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:6px;}
.req-tag{font-size:12px;padding:3px 10px;border-radius:999px;background:var(--brand-100);color:var(--brand-600);font-weight:600;}
.req-tag.warm{background:var(--accent-100);color:var(--accent-500);}
.req-list{margin-top:16px;}
.req-list li{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14.5px;}
.req-list li:last-child{border-bottom:none;}
.req-list .k{color:var(--ink-500);display:flex;align-items:center;gap:9px;}
.req-list .v{color:var(--ink-900);font-weight:600;text-align:right;}
.check{width:18px;height:18px;flex-shrink:0;color:var(--ok-500);}
.req-note{margin-top:20px;font-size:13px;color:var(--ink-300);line-height:1.7;}

/* ---------- 评价墙 ---------- */
.review-columns{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){ .review-columns{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .review-columns{grid-template-columns:repeat(3,1fr);align-items:start;} }
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 22px;
  box-shadow:var(--shadow-1);margin-bottom:20px;transition:transform .18s ease,box-shadow .18s ease;
}
.review-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-3);}
.stars{color:var(--accent-500);font-size:14px;letter-spacing:2px;margin-bottom:10px;}
.review-card p{font-size:14.5px;line-height:1.8;color:var(--ink-700);}
.review-user{display:flex;align-items:center;gap:11px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);}
.avatar{
  width:38px;height:38px;border-radius:50%;background:var(--brand-100);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex-shrink:0;
}
.review-user .n{font-size:14px;color:var(--ink-900);font-weight:600;line-height:1.35;}
.review-user .d{font-size:12.5px;color:var(--ink-300);}
@media (max-width:767px){
  .review-columns{display:flex;overflow-x:auto;gap:16px;scroll-snap-type:x mandatory;padding-bottom:8px;}
  .review-columns::-webkit-scrollbar{height:6px;}
  .review-columns::-webkit-scrollbar-thumb{background:#D3DCE7;border-radius:999px;}
  .review-card{flex:0 0 84%;margin-bottom:0;scroll-snap-align:start;}
}

/* ---------- 下载条带 ---------- */
.download-band{background:var(--brand-700);border-radius:var(--radius-big);padding:34px 28px;position:relative;overflow:hidden;}
@media (min-width:1024px){ .download-band{padding:44px 44px;} }
.download-band::after{
  content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.05);
}
.download-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:26px;align-items:center;}
@media (min-width:1024px){ .download-inner{grid-template-columns:1.1fr .9fr;} }
.download-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px);letter-spacing:-.3px;}
.download-band p{color:rgba(255,255,255,.72);margin-top:10px;font-size:15px;max-width:560px;}
.band-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.qr-box{
  margin-left:auto;width:96px;height:96px;border-radius:14px;background:rgba(255,255,255,.95);
  display:flex;align-items:center;justify-content:center;padding:8px;flex-shrink:0;
}
.qr-box svg{width:100%;height:100%;}
.qr-wrap{display:flex;align-items:flex-end;gap:14px;}
.qr-hint{font-size:12.5px;color:rgba(255,255,255,.65);line-height:1.5;max-width:120px;}

/* ---------- 最新信息 ---------- */
.post-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:768px){ .post-grid{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .post-grid{grid-template-columns:repeat(3,1fr);} }
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-3);}
.post-cover{aspect-ratio:16/9;overflow:hidden;background:#E9EEF4;}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-cover img{transform:scale(1.03);}
.post-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.post-badge{align-self:flex-start;font-size:12px;font-weight:600;color:var(--brand-600);background:var(--brand-100);border-radius:999px;padding:4px 11px;}
.post-title{margin-top:12px;font-size:17px;line-height:1.5;font-weight:600;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-excerpt{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-500);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.post-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:10px;}
.post-date{font-size:13px;color:var(--ink-300);}
.post-arrow{color:var(--brand-600);font-size:14px;font-weight:600;transition:color .18s ease,transform .18s ease;}
.post-card:hover .post-arrow{color:var(--accent-500);transform:translateX(3px);}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:#fff;
  padding:44px 24px;text-align:center;grid-column:1/-1;
}
.empty-state .es-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:var(--brand-100);
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);
}
.empty-state p{font-size:15px;color:var(--ink-500);margin-bottom:18px;}

/* ---------- FAQ ---------- */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item:last-child{border-bottom:none;}
.faq-item.is-open::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent-500);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:none;text-align:left;padding:20px 22px;min-height:56px;
  font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-q:hover{color:var(--brand-600);}
.faq-q .chev{width:20px;height:20px;flex-shrink:0;color:var(--ink-300);transition:transform .2s ease,color .2s ease;}
.faq-item.is-open .chev{transform:rotate(180deg);color:var(--accent-500);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a p{padding:0 22px 20px;font-size:14.5px;line-height:1.85;color:var(--ink-500);max-width:760px;}

/* ---------- CTA ---------- */
.cta-strip{
  background:linear-gradient(120deg,#123A66 0%,#1B5FA8 100%);
  border-radius:var(--radius-big);padding:40px 28px;text-align:center;
}
@media (min-width:1024px){ .cta-strip{padding:56px 56px;} }
.cta-strip h2{color:#fff;font-size:clamp(22px,2.8vw,30px);letter-spacing:-.3px;}
.cta-strip p{color:rgba(255,255,255,.78);margin-top:12px;max-width:620px;margin-left:auto;margin-right:auto;}
.cta-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-700);color:rgba(255,255,255,.6);margin-top:56px;}
@media (min-width:1024px){ .site-footer{margin-top:88px;} }
.footer-top{padding:52px 0 36px;display:grid;grid-template-columns:1fr;gap:34px;}
@media (min-width:768px){ .footer-top{grid-template-columns:1fr 1fr;gap:32px;} }
@media (min-width:1024px){ .footer-top{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;} }
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.14);box-shadow:none;}
.footer-brand span{color:#fff;font-size:16px;font-weight:700;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.9);margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.6);padding:6px 0;transition:color .18s ease;}
.footer-col a:hover{color:#fff;}
.footer-contact{font-size:14px;color:rgba(255,255,255,.62);line-height:2;}
.footer-qr{width:96px;height:96px;border-radius:12px;background:rgba(255,255,255,.95);padding:8px;margin-top:14px;}
.footer-qr svg{width:100%;height:100%;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:#fff;}
.to-top{display:inline-flex;align-items:center;gap:6px;min-height:44px;}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}
@media (max-width:520px){
  .hero-meta{font-size:13px;}
  .btn{padding:0 16px;font-size:14.5px;}
  .post-body{padding:18px;}
}

/* roulang page: article */
:root{
  --ink-900:#0E1B2A; --ink-700:#2C3E52; --ink-500:#5A6B7F; --ink-300:#93A1B2;
  --brand-700:#123A66; --brand-600:#1B5FA8; --brand-100:#E8F1FB;
  --accent-500:#E08A2E; --accent-100:#FDF1DF; --ok-500:#2E9E7E;
  --bg:#F5F7FA; --surface:#FFFFFF; --line:#E3E9F0;
  --r-btn:10px; --r-card:16px; --r-lg:22px;
  --sh-1:0 1px 2px rgba(14,27,42,.05);
  --sh-2:0 6px 20px rgba(14,27,42,.07);
  --sh-3:0 14px 34px rgba(14,27,42,.12);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink-500);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--accent-500);}
button{font:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 32px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  transition:background var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-stuck{
  position:fixed;background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;font-size:17px;letter-spacing:-.2px;white-space:nowrap;}
.brand:hover{color:var(--brand-600);}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:var(--brand-700);display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.logo-mark svg{width:22px;height:22px;display:block;}
.main-nav{display:none;align-items:center;gap:28px;margin-left:8px;}
@media(min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;color:var(--ink-700);font-size:15px;line-height:1;
  padding:14px 2px;display:inline-block;
}
.nav-link:hover{color:var(--brand-600);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.icon-btn{
  width:44px;height:44px;border-radius:10px;display:none;align-items:center;justify-content:center;
  color:var(--ink-700);transition:background var(--ease),color var(--ease);
}
.icon-btn:hover{background:var(--brand-100);color:var(--brand-600);}
@media(min-width:1024px){.icon-btn{display:inline-flex;}}
.icon-btn svg{width:20px;height:20px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 2px 8px rgba(224,138,46,.28);}
.btn-primary:hover{background:#C9761F;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(1px);}
.btn-secondary{background:#fff;color:var(--brand-600);border:1px solid var(--line);}
.btn-secondary:hover{color:var(--brand-600);border-color:var(--brand-600);box-shadow:var(--sh-2);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);}
.btn-ghost:hover{background:var(--accent-500);border-color:var(--accent-500);color:#fff;transform:translateY(-1px);}
.btn-line{display:none;}
@media(min-width:1200px){.btn-line{display:inline-flex;}}
.hamburger{
  width:44px;height:44px;border-radius:10px;display:inline-flex;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  color:var(--ink-900);
}
@media(min-width:1024px){.hamburger{display:none;}}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:currentColor;}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,42,.42);opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;z-index:80;
  transform:translateX(100%);transition:transform 240ms ease-out;
  display:flex;flex-direction:column;padding:20px;box-shadow:-10px 0 30px rgba(14,27,42,.12);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-head .brand-text{font-weight:700;color:var(--ink-900);font-size:16px;}
.drawer-close{width:44px;height:44px;border-radius:10px;font-size:22px;color:var(--ink-700);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;padding:16px 0;flex:1;overflow-y:auto;}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:10px;
  color:var(--ink-700);font-size:15px;font-weight:500;
}
.drawer-nav a:hover{background:var(--brand-100);color:var(--brand-600);}

/* ---------- 页面主体 ---------- */
.page-main{padding:104px 0 0;}
@media(min-width:768px){.page-main{padding-top:120px;}}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-300);padding:8px 0 20px;
}
.crumbs a{color:var(--ink-300);}
.crumbs a:hover{color:var(--brand-600);}
.crumbs .sep{color:var(--ink-300);}
.crumbs .current{color:var(--ink-500);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60%;}

.article-head{padding-bottom:24px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;
  padding:5px 12px;font-size:12px;font-weight:600;line-height:1.4;
}
.badge-brand{background:var(--brand-100);color:var(--brand-600);}
.badge-accent{background:var(--accent-100);color:#B96D17;}
.article-title{
  font-size:clamp(28px,4.2vw,44px);font-weight:700;letter-spacing:-.5px;
  color:var(--ink-900);line-height:1.3;margin:16px 0 18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;
  font-size:13px;color:var(--ink-300);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-300);}
.article-cover{
  margin:16px 0 8px;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-2);aspect-ratio:21/9;background:var(--brand-100);
}
.article-cover img{width:100%;height:100%;object-fit:cover;}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;padding:32px 0 0;}
@media(min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,760px) 300px;justify-content:center;align-items:start;}
}
.article-body{
  max-width:760px;font-size:16px;line-height:1.85;color:var(--ink-500);word-break:break-word;
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:clamp(22px,2.8vw,28px);font-weight:600;color:var(--ink-900);line-height:1.4;
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--brand-600);
}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink-700);margin:28px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;line-height:1.8;}
.article-body li{margin-bottom:.5em;}
.article-body blockquote{
  margin:0 0 1.4em;padding:16px 20px;background:var(--brand-100);
  border-left:3px solid var(--brand-600);border-radius:8px;color:var(--ink-700);
}
.article-body img{border-radius:12px;margin:24px auto;max-width:100%;height:auto;}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent-500);}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:14px;}
.article-body th{background:var(--brand-100);color:var(--ink-900);text-align:left;padding:12px 14px;font-weight:600;}
.article-body td{padding:12px 14px;border-top:1px solid var(--line);}
.article-body tr:nth-child(even) td{background:#FAFBFC;}
.article-body figcaption{font-size:13px;color:var(--ink-300);text-align:center;margin-top:-12px;}

.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px;
}
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.toc-list{list-style:none;padding:0;margin:12px 0 0;display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:7px 10px;border-radius:8px;font-size:14px;color:var(--ink-500);
  border-left:2px solid transparent;line-height:1.5;
}
.toc-list a:hover{background:var(--brand-100);color:var(--brand-600);}
.toc-list a.is-current{color:var(--brand-600);font-weight:600;border-left-color:var(--brand-600);background:var(--brand-100);}
.side-title{font-size:15px;font-weight:600;color:var(--ink-900);display:flex;align-items:center;gap:8px;}
.side-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand-600);}
.side-dl{background:var(--brand-700);color:#fff;padding:20px;border-radius:var(--r-card);}
.side-dl h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:8px;}
.side-dl p{font-size:13px;color:rgba(255,255,255,.7);line-height:1.7;margin-bottom:14px;}

.toc-mobile{display:block;margin:0 0 20px;}
@media(min-width:1280px){.toc-mobile{display:none;}}
.toc-toggle{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:48px;padding:0 16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);color:var(--ink-900);font-weight:600;font-size:15px;
}
.toc-mobile-panel{display:none;margin-top:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:12px;}
.toc-mobile-panel.is-open{display:block;}

/* 空态 */
.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:48px 24px;text-align:center;max-width:760px;
}
.empty-art{
  width:96px;height:96px;margin:0 auto 18px;border-radius:24px;background:var(--brand-100);
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);
}
.empty-art svg{width:44px;height:44px;}
.empty-title{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:8px;}
.empty-desc{font-size:15px;color:var(--ink-500);margin-bottom:20px;}

/* 相关推荐 */
.section{padding:72px 0 0;}
@media(min-width:768px){.section{padding-top:88px;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-title{font-size:clamp(22px,2.8vw,30px);font-weight:600;color:var(--ink-900);line-height:1.35;}
.section-sub{font-size:14px;color:var(--ink-300);margin-top:6px;}
.card-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.post-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D6DEE8;}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms ease-out;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.55;}
.post-card:hover .post-title{color:var(--brand-600);}
.post-desc{font-size:14px;color:var(--ink-500);line-height:1.75;}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-300);}

/* 返回区 */
.back-row{display:flex;flex-wrap:wrap;gap:14px;padding:56px 0 0;}

/* 底部 CTA */
.cta-band{
  margin-top:88px;background:var(--brand-700);border-radius:var(--r-lg);
  padding:40px 28px;display:grid;gap:24px;align-items:center;
}
@media(min-width:768px){.cta-band{padding:48px 48px;grid-template-columns:1fr auto;}}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);font-weight:600;color:#fff;line-height:1.4;margin-bottom:10px;}
.cta-band p{font-size:15px;color:rgba(255,255,255,.72);line-height:1.8;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 页脚 */
.site-footer{margin-top:88px;background:var(--brand-700);color:#fff;padding:64px 0 0;}
.footer-top{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:640px){.footer-top{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-top{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;color:rgba(255,255,255,.62);line-height:1.85;margin-top:14px;max-width:360px;}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.9);margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.6);margin-bottom:10px;line-height:1.6;}
.footer-col a:hover{color:#fff;}
.footer-contact{font-size:14px;color:rgba(255,255,255,.6);line-height:1.9;margin-bottom:16px;}
.footer-qr{width:96px;height:96px;border-radius:12px;overflow:hidden;background:#fff;}
.footer-qr svg{width:96px;height:96px;display:block;}
.footer-bottom{
  margin-top:48px;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.75);}
.footer-bottom a:hover{color:#fff;}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink-900:#0E1B2A; --ink-700:#2C3E52; --ink-500:#5A6B7F; --ink-300:#93A1B2;
  --brand-700:#123A66; --brand-600:#1B5FA8; --brand-100:#E8F1FB;
  --accent-500:#E08A2E; --accent-100:#FDF1DF; --ok-500:#2E9E7E;
  --bg:#F5F7FA; --surface:#FFFFFF; --line:#E3E9F0;
  --r-btn:10px; --r-card:16px; --r-panel:22px;
  --sh-1:0 1px 2px rgba(14,27,42,.05);
  --sh-2:0 6px 20px rgba(14,27,42,.07);
  --sh-3:0 14px 34px rgba(14,27,42,.12);
  --font:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--ink-500);
  font-family:var(--font);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--accent-500);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  transition:background .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  box-shadow:0 4px 18px rgba(14,27,42,.06);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;font-size:17px;letter-spacing:-.2px;}
.brand:hover{color:var(--brand-600);}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);
}
.logo-mark svg{width:20px;height:20px;}
.main-nav{display:none;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  font-size:15px;color:var(--ink-700);border-radius:8px;
}
.nav-link:hover{color:var(--brand-600);background:rgba(232,241,251,.7);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:44px;height:44px;border-radius:10px;display:none;align-items:center;justify-content:center;
  color:var(--ink-700);border:1px solid transparent;transition:background .2s ease-out,color .2s ease-out;
}
.icon-btn:hover{background:var(--brand-100);color:var(--brand-600);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 2px 8px rgba(224,138,46,.28);}
.btn-primary:hover{background:#c9781f;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(1px);}
.btn-secondary{background:#fff;color:var(--brand-600);border:1px solid var(--line);}
.btn-secondary:hover{color:var(--brand-600);border-color:var(--brand-600);box-shadow:var(--sh-2);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);}
.btn-ghost:hover{background:var(--accent-500);border-color:var(--accent-500);color:#fff;}
.btn-sm{min-height:40px;padding:0 14px;font-size:14px;}
.btn-block{width:100%;}
.header-cta{display:none;}
.hamburger{
  width:44px;height:44px;border-radius:10px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;border:1px solid var(--line);background:#fff;
}
.hamburger span{width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .22s ease-out,opacity .22s ease-out;}
.hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,340px);z-index:80;
  background:#fff;box-shadow:-14px 0 40px rgba(14,27,42,.16);
  transform:translateX(102%);transition:transform .26s ease-out;
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-title{font-size:16px;font-weight:700;color:var(--ink-900);}
.drawer-close{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--ink-700);border:1px solid var(--line);}
.drawer-group-title{font-size:12px;font-weight:600;color:var(--ink-300);letter-spacing:.08em;margin:14px 0 6px;}
.drawer a.d-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 10px;border-radius:10px;color:var(--ink-700);font-size:15px;
}
.drawer a.d-link:hover{background:var(--brand-100);color:var(--brand-600);}
.drawer a.d-link.is-active{color:var(--brand-600);font-weight:600;background:var(--brand-100);}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);}
.overlay{
  position:fixed;inset:0;background:rgba(14,27,42,.42);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .26s ease-out;
}
.overlay.is-open{opacity:1;pointer-events:auto;}

@media (min-width:1024px){
  .main-nav{display:flex;}
  .header-cta{display:inline-flex;}
  .icon-btn{display:inline-flex;}
  .hamburger{display:none;}
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:18px 0 4px;font-size:13px;color:var(--ink-300);}
.crumb-bar ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.crumb-bar li{display:flex;align-items:center;gap:6px;}
.crumb-bar li::after{content:"/";color:var(--ink-300);}
.crumb-bar li:last-child::after{content:"";}
.crumb-bar a{color:var(--ink-300);}
.crumb-bar a:hover{color:var(--brand-600);}
.crumb-bar .current{color:var(--ink-500);}

/* ---------- 主区域 ---------- */
main{display:block;padding-top:72px;}
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:80px 0;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:600;letter-spacing:.04em;
}
.h1{font-size:clamp(28px,4.2vw,44px);line-height:1.24;font-weight:700;letter-spacing:-.5px;color:var(--ink-900);}
.h2{font-size:clamp(22px,2.8vw,30px);line-height:1.36;font-weight:600;letter-spacing:-.3px;color:var(--ink-900);}
.h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900);}
.lead{font-size:16px;line-height:1.85;color:var(--ink-500);max-width:42em;}
.meta-line{font-size:14px;color:var(--ink-300);font-family:var(--font-num);}
.section-head{max-width:720px;margin-bottom:28px;}
.section-head .h2{margin-top:12px;}
.section-head p{margin-top:12px;}

/* 横幅 */
.banner{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  min-height:250px;display:flex;align-items:flex-end;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--sh-2);
}
.banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,27,42,.82) 6%,rgba(14,27,42,.55) 52%,rgba(14,27,42,.30) 100%);
}
.banner-inner{position:relative;z-index:2;padding:32px 26px;max-width:760px;}
.banner .h1{color:#fff;}
.banner .sub{margin-top:12px;color:rgba(255,255,255,.86);font-size:15px;line-height:1.8;max-width:34em;}
.banner .tag-row{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}
.tag-glass{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  font-size:12px;color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.34);
}
@media (min-width:768px){
  .banner{min-height:280px;}
  .banner-inner{padding:44px 40px;}
}

/* 双栏 */
.split{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;}
@media (min-width:1024px){
  .split{grid-template-columns:6fr 6fr;gap:48px;}
}
.figure-panel{border-radius:var(--r-panel);overflow:hidden;box-shadow:var(--sh-2);background:#fff;border:1px solid var(--line);}
.ratio-16x9{position:relative;aspect-ratio:16/9;}
.ratio-16x9 img{width:100%;height:100%;object-fit:cover;}
.panel-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-2);
}
.para + .para{margin-top:14px;}
.para{font-size:15.5px;line-height:1.85;color:var(--ink-500);}

/* 要点卡 */
.point-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.point-grid{grid-template-columns:repeat(2,1fr);}}
.point{
  display:flex;gap:16px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.point:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#d6e2ef;}
.point-icon{
  flex:none;width:44px;height:44px;border-radius:12px;background:var(--brand-100);
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);
}
.point-icon svg{width:22px;height:22px;}
.point h3{font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5;}
.point p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--ink-500);}

/* 列表 */
.check-list{margin-top:16px;display:grid;gap:10px;}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.75;color:var(--ink-500);}
.check-list .dot{
  flex:none;margin-top:6px;width:16px;height:16px;border-radius:50%;
  background:rgba(46,158,126,.14);color:var(--ok-500);
  display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;
}
.quote{
  margin-top:20px;background:var(--brand-100);border-left:3px solid var(--brand-600);
  border-radius:0 12px 12px 0;padding:18px 20px;font-size:15px;line-height:1.8;color:var(--ink-700);
}

/* 系统要求 */
.req-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.req-grid{grid-template-columns:repeat(2,1fr);}}
.req-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);}
.req-card h3{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:600;color:var(--ink-900);}
.req-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--accent-100);color:var(--accent-500);
}
.req-list{margin-top:16px;}
.req-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px dashed var(--line);font-size:14.5px;
}
.req-row:last-child{border-bottom:0;}
.req-row .k{color:var(--ink-500);display:flex;align-items:center;gap:8px;}
.req-row .v{color:var(--ink-900);font-family:var(--font-num);font-weight:600;text-align:right;}
.tick{width:16px;height:16px;border-radius:50%;background:rgba(46,158,126,.14);color:var(--ok-500);display:inline-flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;flex:none;}
.req-note{margin-top:16px;font-size:13px;line-height:1.7;color:var(--ink-300);}

/* FAQ */
.faq-list{margin-top:8px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:16px 4px 16px 14px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink-900);position:relative;
  transition:color .2s ease-out;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:transparent;transition:background .2s ease-out;
}
.faq-item.is-open .faq-q::before{background:var(--accent-500);}
.faq-q:hover{color:var(--brand-600);}
.faq-arrow{flex:none;width:24px;height:24px;color:var(--ink-300);transition:transform .2s ease-out,color .2s ease-out;}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--brand-600);}
.faq-a{overflow:hidden;max-height:0;transition:max-height .26s ease-out;}
.faq-a-inner{padding:0 14px 20px 14px;font-size:15px;line-height:1.85;color:var(--ink-500);max-width:44em;}

/* CTA */
.cta-band{
  background:var(--brand-700);border-radius:var(--r-panel);color:#fff;
  padding:36px 26px;display:grid;gap:22px;align-items:center;
  box-shadow:var(--sh-3);
}
@media (min-width:768px){.cta-band{padding:44px 40px;grid-template-columns:1.4fr 1fr;}}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:600;color:#fff;line-height:1.4;}
.cta-band p{margin-top:10px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 页脚 */
.site-footer{background:var(--brand-700);color:#fff;margin-top:64px;padding:56px 0 0;}
.footer-top{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:640px){.footer-top{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-top{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;}
.footer-brand .logo-mark{background:rgba(255,255,255,.14);}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:30em;}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.9);margin-bottom:14px;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.6);padding:5px 0;}
.footer-col a:hover{color:#fff;}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.62);}
.footer-qr{margin-top:14px;width:96px;height:96px;border-radius:12px;overflow:hidden;background:#fff;padding:6px;}
.footer-qr svg{width:100%;height:100%;}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;}

/* 返回顶部 */
.to-top{
  position:fixed;right:18px;bottom:18px;z-index:50;width:44px;height:44px;border-radius:12px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-2);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;
  transition:opacity .24s ease-out,transform .24s ease-out;
}
.to-top.is-show{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}

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

/* roulang page: category2 */
:root{
    --ink-900:#0E1B2A; --ink-700:#2C3E52; --ink-500:#5A6B7F; --ink-300:#93A1B2;
    --brand-700:#123A66; --brand-600:#1B5FA8; --brand-100:#E8F1FB;
    --accent-500:#E08A2E; --accent-100:#FDF1DF; --ok-500:#2E9E7E;
    --bg:#F5F7FA; --surface:#FFFFFF; --line:#E3E9F0;
    --radius-btn:10px; --radius-card:16px; --radius-lg:20px; --radius-pill:999px;
    --shadow-1:0 1px 2px rgba(14,27,42,.05);
    --shadow-2:0 6px 20px rgba(14,27,42,.07);
    --shadow-3:0 14px 34px rgba(14,27,42,.12);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;background:var(--bg);color:var(--ink-500);
    font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.35;font-weight:600}
  p{margin:0 0 1.1em}
  ul,ol{margin:0;padding:0;list-style:none}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
  :focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:1024px){.container{padding:0 32px}}

  /* ---------- header ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:rgba(255,255,255,.55);
    -webkit-backdrop-filter:blur(14px) saturate(150%);
    backdrop-filter:blur(14px) saturate(150%);
    border-bottom:1px solid rgba(255,255,255,.6);
    transition:background .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
  }
  .site-header.is-scrolled{
    background:rgba(255,255,255,.92);
    border-bottom-color:var(--line);
    box-shadow:0 6px 20px rgba(14,27,42,.07);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    width:34px;height:34px;border-radius:var(--radius-btn);background:var(--brand-700);
    display:grid;place-items:center;box-shadow:var(--shadow-1);flex-shrink:0;
  }
  .brand-mark svg{width:20px;height:20px}
  .brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.2px;white-space:nowrap}
  .main-nav{display:none;align-items:center;gap:24px}
  @media (min-width:1024px){.main-nav{display:flex}}
  .nav-link{
    position:relative;font-size:15px;color:var(--ink-700);padding:8px 2px;
    transition:color .18s ease-out;white-space:nowrap;
  }
  .nav-link:hover{color:var(--brand-600)}
  .nav-link.is-active{color:var(--brand-600);font-weight:600}
  .nav-link.is-active::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
    background:var(--brand-600);border-radius:2px;
  }
  .header-actions{display:none;align-items:center;gap:12px}
  @media (min-width:1024px){.header-actions{display:flex}}
  .icon-btn{
    display:grid;place-items:center;width:44px;height:44px;border-radius:var(--radius-btn);
    color:var(--ink-700);transition:background .18s ease-out,color .18s ease-out;
  }
  .icon-btn:hover{background:var(--brand-100);color:var(--brand-600)}
  .menu-toggle{
    display:grid;place-items:center;width:44px;height:44px;border-radius:var(--radius-btn);
    border:1px solid var(--line);background:#fff;color:var(--ink-900);
    transition:box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .menu-toggle:hover{border-color:var(--brand-600);box-shadow:var(--shadow-1)}
  @media (min-width:1024px){.menu-toggle{display:none}}

  .drawer-mask{
    position:fixed;inset:0;background:rgba(14,27,42,.42);z-index:70;
    opacity:0;visibility:hidden;transition:opacity .24s ease-out,visibility .24s ease-out;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;background:#fff;z-index:80;
    transform:translateX(100%);transition:transform .24s ease-out;
    padding:24px 22px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;
    box-shadow:-14px 0 34px rgba(14,27,42,.16);
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
  .drawer-title{font-size:15px;font-weight:600;color:var(--ink-900)}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    min-height:48px;padding:0 12px;border-radius:var(--radius-btn);
    font-size:15.5px;color:var(--ink-700);transition:background .18s ease-out,color .18s ease-out;
  }
  .drawer-link:hover,.drawer-link.is-active{background:var(--brand-100);color:var(--brand-600);font-weight:600}
  .drawer-foot{margin-top:auto;padding-top:20px}

  /* ---------- buttons / badges ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;white-space:nowrap;
    transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(224,138,46,.28)}
  .btn-primary:hover{background:#c9781f;transform:translateY(-1px);box-shadow:0 12px 26px rgba(224,138,46,.34)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-outline{background:#fff;color:var(--brand-600);border:1px solid var(--line)}
  .btn-outline:hover{border-color:var(--brand-600);box-shadow:var(--shadow-2);transform:translateY(-1px)}
  .btn-outline:active{transform:translateY(1px)}
  .btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}
  .btn-ghost:hover{background:var(--accent-500);border-color:var(--accent-500)}
  .btn-block{width:100%}

  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--radius-pill);
    font-size:12px;font-weight:600;letter-spacing:.2px;
  }
  .badge-brand{background:var(--brand-100);color:var(--brand-600)}
  .badge-accent{background:var(--accent-100);color:var(--accent-500)}
  .badge-ok{background:rgba(46,158,126,.12);color:var(--ok-500)}

  /* ---------- breadcrumb / hero ---------- */
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--ink-300);padding-top:88px;
  }
  .breadcrumb a{color:var(--ink-300);transition:color .18s ease-out}
  .breadcrumb a:hover{color:var(--brand-600)}
  .breadcrumb .sep{color:var(--ink-300);opacity:.7}
  .breadcrumb .current{color:var(--ink-500)}

  .hero{padding:20px 0 56px;background:var(--bg)}
  .hero-grid{display:grid;gap:40px;grid-template-columns:1fr}
  @media (min-width:1024px){
    .hero-grid{grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:56px;align-items:center}
  }
  h1{font-size:clamp(28px,4.2vw,44px);font-weight:700;letter-spacing:-.5px;line-height:1.24}
  h2{font-size:clamp(22px,2.8vw,30px);font-weight:600;letter-spacing:-.3px}
  h3{font-size:19px;font-weight:600}
  .hero-sub{margin-top:16px;font-size:17px;color:var(--ink-700);max-width:640px}
  .hero-meta{
    display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:18px;
    font-size:13.5px;color:var(--ink-300);
  }
  .hero-meta span{display:inline-flex;align-items:center;gap:6px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .trust-chip{
    display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--radius-pill);
    background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--ink-700);box-shadow:var(--shadow-1);
  }
  .trust-chip svg{width:16px;height:16px;flex-shrink:0}

  .hero-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-2);overflow:hidden;
  }
  .media-16x9{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:var(--brand-100)}
  .media-16x9 img{width:100%;height:100%;object-fit:cover}
  .hero-card-body{padding:20px 22px 24px}
  .hero-card-title{font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:14px}
  .stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;text-align:center}
  .stat{padding:12px 6px;border-radius:12px;background:var(--bg)}
  .stat-num{display:block;font-size:22px;font-weight:700;color:var(--brand-600);line-height:1.2}
  .stat-label{display:block;font-size:12.5px;color:var(--ink-500);margin-top:4px}

  /* ---------- anchor bar ---------- */
  .anchor-bar{
    position:sticky;top:64px;z-index:40;
    background:rgba(255,255,255,.9);
    -webkit-backdrop-filter:blur(10px);
    backdrop-filter:blur(10px);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  .anchor-inner{display:flex;align-items:center;gap:14px;min-height:56px;overflow-x:auto;scrollbar-width:none}
  .anchor-inner::-webkit-scrollbar{display:none}
  .anchor-label{font-size:12.5px;font-weight:600;color:var(--ink-300);white-space:nowrap;letter-spacing:.4px}
  .anchor-links{display:flex;align-items:center;gap:8px}
  .anchor-link{
    display:inline-flex;align-items:center;min-height:36px;padding:0 14px;border-radius:var(--radius-pill);
    font-size:14px;color:var(--ink-500);white-space:nowrap;
    transition:background .18s ease-out,color .18s ease-out;
  }
  .anchor-link:hover{background:var(--brand-100);color:var(--brand-600)}
  .anchor-link.is-active{background:var(--brand-600);color:#fff;font-weight:600}

  /* ---------- sections ---------- */
  .section{padding:56px 0}
  @media (min-width:1024px){.section{padding:88px 0}}
  .section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{max-width:720px;margin-bottom:36px}
  .section-head h2{margin-top:14px}
  .section-lead{margin-top:14px;font-size:15.5px;color:var(--ink-500);line-height:1.85}
  .section-grid{display:grid;gap:30px;grid-template-columns:1fr}
  @media (min-width:1024px){.section-grid{grid-template-columns:minmax(0,1fr) 320px;gap:44px}}
  .body-columns{display:grid;gap:8px;grid-template-columns:1fr}
  @media (min-width:768px){.body-columns{grid-template-columns:1fr 1fr;gap:36px}}
  .body-columns p{font-size:15.5px;line-height:1.85;color:var(--ink-500)}
  .body-columns strong{color:var(--ink-700);font-weight:600}

  .info-box{
    background:var(--brand-100);border-radius:12px;padding:24px 22px;align-self:start;
    border:1px solid rgba(27,95,168,.12);
  }
  .info-box h3{font-size:16px;color:var(--brand-700);margin-bottom:14px}
  .info-box li{
    position:relative;padding-left:20px;margin-bottom:10px;
    font-size:14.5px;line-height:1.7;color:var(--ink-700);
  }
  .info-box li:last-child{margin-bottom:0}
  .info-box li::before{
    content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
    background:var(--ok-500);
  }
  .info-box .info-note{
    margin-top:16px;padding-top:14px;border-top:1px dashed rgba(27,95,168,.25);
    font-size:13.5px;color:var(--ink-500);
  }

  /* ---------- step cards ---------- */
  .step-list{display:grid;gap:16px}
  .step-card{
    display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;align-items:start;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:20px;box-shadow:var(--shadow-1);
    transition:transform .2s ease-out,box-shadow .2s ease-out;
  }
  .step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
  .step-index{
    width:44px;height:44px;border-radius:12px;background:var(--accent-100);
    display:grid;place-items:center;font-size:17px;font-weight:700;color:var(--accent-500);
  }
  .step-card h3{font-size:16.5px;margin-bottom:6px}
  .step-card p{font-size:14.5px;line-height:1.8;color:var(--ink-500);margin:0}

  /* ---------- compare table ---------- */
  .compare{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}
  .compare th,.compare td{padding:14px 18px;font-size:14.5px;text-align:left;border-bottom:1px solid var(--line)}
  .compare thead th{background:var(--brand-100);color:var(--brand-700);font-size:14px;font-weight:600}
  .compare tbody tr:nth-child(even) td{background:#FAFBFC}
  .compare tbody tr:last-child td{border-bottom:0}

  /* ---------- faq ---------- */
  .faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:0}
  .faq-btn{
    display:flex;width:100%;align-items:center;justify-content:space-between;gap:16px;
    min-height:64px;padding:16px 18px;text-align:left;
    font-size:16px;font-weight:600;color:var(--ink-900);
    border-left:3px solid transparent;
    transition:border-color .2s ease-out,background .2s ease-out;
  }
  .faq-btn:hover{background:#FAFBFC}
  .faq-item.is-open .faq-btn{border-left-color:var(--accent-500)}
  .faq-icon{flex-shrink:0;width:22px;height:22px;color:var(--brand-600);transition:transform .2s ease-out}
  .faq-item.is-open .faq-icon{transform:rotate(180deg)}
  .faq-panel{max-height:0;overflow:hidden;transition:max-height .26s ease-out}
  .faq-panel-inner{padding:0 22px 20px 21px;font-size:15px;line-height:1.85;color:var(--ink-500)}

  /* ---------- cta band ---------- */
  .cta-section{padding:56px 0 72px}
  @media (min-width:1024px){.cta-section{padding:72px 0 96px}}
  .cta-band{
    background:var(--brand-700);border-radius:var(--radius-xl);padding:40px 28px;
    display:grid;gap:28px;position:relative;overflow:hidden;
  }
  @media (min-width:1024px){.cta-band{padding:56px 48px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:40px}}
  .cta-band::after{
    content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
    background:rgba(255,255,255,.06);
  }
  .cta-band h2{color:#fff;position:relative;z-index:1}
  .cta-band p{color:rgba(255,255,255,.72);margin-top:12px;font-size:15.5px;line-height:1.8;max-width:600px;position:relative;z-index:1}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}

  /* ---------- footer ---------- */
  .site-footer{background:var(--brand-700);color:rgba(255,255,255,.6);padding:64px 0 0;margin-top:8px}
  .footer-top{display:grid;gap:36px;grid-template-columns:1fr;padding-bottom:48px}
  @media (min-width:768px){.footer-top{grid-template-columns:1fr 1fr}}
  @media (min-width:1024px){.footer-top{grid-template-columns:1.7fr 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:16px}
  .logo-mark{
    width:34px;height:34px;border-radius:var(--radius-btn);background:rgba(255,255,255,.12);
    display:grid;place-items:center;flex-shrink:0;
  }
  .logo-mark svg{width:20px;height:20px}
  .footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:420px}
  .footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.9);margin-bottom:16px}
  .footer-col a{
    display:block;font-size:14px;color:rgba(255,255,255,.6);margin-bottom:10px;
    transition:color .18s ease-out;
  }
  .footer-col a:hover{color:#fff}
  .footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6)}
  .footer-qr{
    width:96px;height:96px;border-radius:12px;overflow:hidden;margin-top:14px;background:#fff;
    box-shadow:0 8px 20px rgba(0,0,0,.18);
  }
  .footer-qr svg{width:100%;height:100%;display:block}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
    font-size:13px;color:rgba(255,255,255,.5);
  }
  .back-top{
    display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:0 14px;
    border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,.24);color:rgba(255,255,255,.8);
    font-size:13px;transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  }
  .back-top:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4)}

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  }

/* roulang page: category3 */
:root{
  --ink-900:#0E1B2A;
  --ink-700:#2C3E52;
  --ink-500:#5A6B7F;
  --ink-300:#93A1B2;
  --brand-700:#123A66;
  --brand-600:#1B5FA8;
  --brand-100:#E8F1FB;
  --accent-500:#E08A2E;
  --accent-600:#C97A22;
  --accent-100:#FDF1DF;
  --ok-500:#2E9E7E;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --line:#E3E9F0;
  --r-btn:10px;
  --r-card:16px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(14,27,42,.05);
  --sh-2:0 6px 20px rgba(14,27,42,.07);
  --sh-3:0 14px 34px rgba(14,27,42,.12);
  --t:180ms ease-out;
  --font-sans:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-500);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand-600);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--accent-500)}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-700);color:#fff;padding:10px 16px;z-index:200;border-radius:0 0 8px 0}
.skip-link:focus{left:0;color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:none;
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-solid{
  background:rgba(255,255,255,.92);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-2);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.3px;flex-shrink:0;min-height:44px}
.logo:hover{color:var(--brand-600)}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.logo-mark svg{width:20px;height:20px;display:block}
.main-nav{display:none;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 12px;
  font-size:15px;color:var(--ink-700);
  border-bottom:2px solid transparent;
  transition:color var(--t),border-color var(--t);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link.is-active{color:var(--brand-600);border-bottom-color:var(--brand-600);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:44px;height:44px;display:none;align-items:center;justify-content:center;
  border-radius:var(--r-btn);color:var(--ink-700);border:1px solid transparent;
  transition:background var(--t),color var(--t);
}
.icon-btn:hover{background:var(--brand-100);color:var(--brand-600)}
.icon-btn svg{width:20px;height:20px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-btn);
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1)}
.btn-secondary{background:#fff;color:var(--brand-600);border:1px solid var(--line);box-shadow:var(--sh-1)}
.btn-secondary:hover{color:var(--accent-500);border-color:var(--brand-100);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn-ghost:hover{background:var(--accent-500);border-color:var(--accent-500);color:#fff;transform:translateY(-1px)}
.btn-sm{min-height:40px;padding:0 14px;font-size:14px}
.header-cta-secondary{display:none}
.header-cta-primary{display:none}
@media(min-width:1024px){
  .main-nav{display:flex}
  .icon-btn{display:inline-flex}
  .header-cta-secondary{display:inline-flex}
  .header-cta-primary{display:inline-flex}
}
.hamburger{
  width:44px;height:44px;display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-700);border-radius:2px;transition:transform var(--t),opacity var(--t)}
@media(min-width:1024px){.hamburger{display:none}}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:120;
  background:#fff;box-shadow:var(--sh-3);
  transform:translateX(100%);transition:transform 240ms ease-out;
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink-900)}
.drawer-nav{margin-top:8px;display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;padding:0 4px;
  font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-600);font-weight:600}
.drawer-nav a:hover{color:var(--brand-600)}
.drawer-foot{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:10px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,42,.42);z-index:110;
  opacity:0;visibility:hidden;transition:opacity 240ms ease-out,visibility 240ms ease-out;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
body.drawer-open{overflow:hidden}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--brand-700);
  padding:132px 0 116px;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(9,24,42,.94) 0%,rgba(9,24,42,.86) 42%,rgba(9,24,42,.6) 100%);
}
.hero-inner-content{position:relative;z-index:2;max-width:760px}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.62)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.38)}
.breadcrumb .current{color:rgba(255,255,255,.86)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--brand-100);color:var(--brand-600);
}
.hero .badge{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28)}
.hero h1{
  margin:18px 0 0;
  font-size:clamp(28px,4.2vw,44px);
  font-weight:700;letter-spacing:-.5px;line-height:1.24;
  color:#fff;
}
.hero-sub{
  margin-top:16px;max-width:640px;
  font-size:16px;line-height:1.85;color:rgba(255,255,255,.82);
}
.hero-meta{
  margin-top:14px;display:flex;flex-wrap:wrap;gap:8px 18px;
  font-size:14px;color:rgba(255,255,255,.6);
}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- hero figure ---------- */
.hero-figure-wrap{position:relative;z-index:3}
.hero-figure{
  margin-top:-76px;
  border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-3);background:#0E1B2A;
  aspect-ratio:21/9;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;display:block}

/* ---------- Sections ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:92px 0}}
.section-alt{background:#fff}
.section-head{max-width:720px;margin-bottom:40px}
.section-kicker{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand-600);margin-bottom:12px;
}
h2.section-title{
  font-size:clamp(22px,2.8vw,30px);font-weight:600;line-height:1.36;
  color:var(--ink-900);letter-spacing:-.3px;
}
.section-desc{margin-top:14px;font-size:16px;line-height:1.85;color:var(--ink-500);max-width:700px}
.prose p{font-size:16px;line-height:1.85;color:var(--ink-500);max-width:700px}
.prose p + p{margin-top:1.2em}

/* ---------- Grid ---------- */
.grid-2{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:768px){.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}}
.grid-3{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:768px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}}

/* ---------- Cards ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:26px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:var(--brand-100)}
.card h3{font-size:19px;font-weight:600;color:var(--ink-900);line-height:1.5}
.card p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-500)}
.card-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-100);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px;stroke:var(--brand-600);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

.info-box{
  background:var(--brand-100);border-radius:12px;padding:20px 22px;
}
.info-box h3{font-size:16px;font-weight:600;color:var(--brand-700);margin-bottom:10px}
.info-box p{font-size:14.5px;line-height:1.8;color:var(--ink-700)}
.info-box ul{margin-top:10px;display:flex;flex-direction:column;gap:8px}
.info-box li{font-size:14.5px;line-height:1.7;color:var(--ink-700);padding-left:18px;position:relative}
.info-box li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand-600)}

/* ---------- Timeline ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand-600),var(--brand-100));
}
.tl-item{position:relative;padding-left:60px}
.tl-item + .tl-item{margin-top:24px}
.tl-dot{
  position:absolute;left:0;top:22px;
  width:40px;height:40px;border-radius:50%;
  background:#fff;border:2px solid var(--brand-600);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;line-height:1;
  box-shadow:var(--sh-2);
}
.tl-item.is-done .tl-dot{background:var(--ok-500);border-color:var(--ok-500);color:#fff}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:24px 26px;
  transition:transform var(--t),box-shadow var(--t);
}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3)}
.tl-card h3{font-size:19px;font-weight:600;color:var(--ink-900);line-height:1.5}
.tl-card p{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--ink-500);max-width:660px}
.tl-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.7;
  background:var(--accent-100);color:var(--accent-500);
}
.tag-blue{background:var(--brand-100);color:var(--brand-600)}
.tag-ok{background:rgba(46,158,126,.12);color:var(--ok-500)}
@media(max-width:520px){
  .timeline::before{left:15px}
  .tl-item{padding-left:46px}
  .tl-dot{width:32px;height:32px;font-size:13px;top:20px}
  .tl-card{padding:20px}
}

/* ---------- Data list ---------- */
.spec-list{border-top:1px solid var(--line);margin-top:26px}
.spec-row{
  display:flex;flex-wrap:wrap;gap:8px 16px;align-items:baseline;
  padding:14px 0;border-bottom:1px dashed var(--line);
}
.spec-name{font-size:15px;color:var(--ink-700);font-weight:600;min-width:150px;display:flex;align-items:center;gap:8px}
.spec-name svg{width:16px;height:16px;stroke:var(--ok-500);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.spec-value{font-size:15px;color:var(--ink-500);flex:1;min-width:200px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";letter-spacing:.02em;color:var(--ink-700)}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1);margin-top:28px}
table.data-table{width:100%;border-collapse:collapse;min-width:640px}
table.data-table th,table.data-table td{text-align:left;padding:14px 18px;font-size:14.5px;line-height:1.75}
table.data-table thead th{background:var(--brand-100);color:var(--brand-700);font-weight:600;white-space:nowrap}
table.data-table tbody tr:nth-child(even){background:#FAFBFC}
table.data-table tbody td{color:var(--ink-500);border-top:1px solid var(--line)}
table.data-table tbody td:first-child{color:var(--ink-700);font-weight:600}

/* ---------- FAQ ---------- */
.faq-list{margin-top:28px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item:last-child{border-bottom:0}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;
  transition:background var(--t);
}
.faq-item.is-open::before{background:var(--accent-500)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
  transition:color var(--t);
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);color:var(--ink-500);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;transition:transform 200ms ease-out,background var(--t),color var(--t),border-color var(--t);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--accent-500);border-color:var(--accent-500);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease-out}
.faq-a-inner{padding:0 22px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-500);max-width:740px}

/* ---------- CTA band ---------- */
.cta-band{background:var(--brand-700);color:#fff;padding:64px 0}
@media(min-width:768px){.cta-band{padding:80px 0}}
.cta-inner{display:grid;gap:28px;align-items:center}
@media(min-width:992px){.cta-inner{grid-template-columns:1.2fr 1fr;gap:48px}}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);font-weight:600;line-height:1.4;color:#fff;letter-spacing:-.3px}
.cta-band p{margin-top:14px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.76);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
@media(min-width:992px){.cta-actions{justify-content:flex-end}}
.cta-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.55)}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand-700);color:#fff;padding:56px 0 0;margin-top:0}
.footer-top{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-top{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff}
.footer-brand .logo-mark{background:rgba(255,255,255,.14)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:380px}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.9);margin-bottom:16px}
.footer-col a{display:block;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);padding:6px 0;transition:color var(--t),transform var(--t)}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62)}
.footer-contact a{display:inline;padding:0}
.footer-qr{
  margin-top:16px;width:96px;height:96px;border-radius:12px;overflow:hidden;background:#fff;
  display:flex;align-items:center;justify-content:center;
}
.footer-qr svg{width:96px;height:96px;display:block}
.footer-bottom{
  margin-top:48px;padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}
.to-top{
  display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0 14px;
  border:1px solid rgba(255,255,255,.24);border-radius:var(--r-btn);
  color:rgba(255,255,255,.8);font-size:13px;
  transition:background var(--t),color var(--t),border-color var(--t);
}
.to-top:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.45)}
.to-top svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- Animations ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}