/* roulang page: index */
:root{
  --brand-900:#0F4168;
  --brand:#16588C;
  --brand-400:#3C7CAE;
  --brand-100:#E6EFF7;
  --brand-50:#F2F7FB;
  --accent:#EA6A2B;
  --accent-700:#C9531B;
  --accent-100:#FCEFE6;
  --ink:#121C27;
  --body:#34424F;
  --muted:#6B7B8A;
  --line:#E2E9F0;
  --line-strong:#D6E4F0;
  --page:#F6F8FA;
  --white:#FFFFFF;
  --ok:#1E8E5A;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,28,39,.04), 0 10px 30px -18px rgba(18,28,39,.28);
  --sh-2:0 1px 2px rgba(18,28,39,.05), 0 18px 40px -20px rgba(22,88,140,.38);
  --t:180ms ease-out;
  --sidebar:248px;
  --content-max:1120px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html body{
  margin:0;
  background:var(--page);
  color:var(--body);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--accent)}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-100);color:var(--brand-900)}

.container{width:100%;max-width:var(--content-max);margin:0 auto;padding:0 32px}
.site-main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column}
.site-main > main{flex:1 1 auto}

/* ---------- Buttons ---------- */
.btn-primary,.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform var(--t),background-color var(--t),border-color var(--t),box-shadow var(--t),color var(--t);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px -14px rgba(234,106,43,.95)}
.btn-primary:hover{background:var(--accent-700);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:var(--accent-700)}
.btn-secondary{background:#fff;color:var(--brand-900);border-color:var(--line-strong)}
.btn-secondary:hover{background:var(--brand-50);border-color:var(--brand-400);color:var(--brand-900)}
.btn-secondary:active{background:var(--brand-100)}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-block{width:100%}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-900)}
.link-arrow svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--t)}
.link-arrow:hover{color:var(--accent)}
.link-arrow:hover svg{transform:translateX(2px)}

/* ---------- Badges ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;white-space:nowrap}
.badge-brand{background:var(--brand-100);color:var(--brand-900)}
.badge-accent{background:var(--accent-100);color:var(--accent-700)}
.badge-ok{background:rgba(30,142,90,.1);color:var(--ok)}

/* ---------- Cards ---------- */
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong)}

/* ---------- Sidebar ---------- */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar);
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:24px 18px 20px;overflow-y:auto;z-index:50;
}
.side-brand{display:flex;align-items:center;gap:12px;padding:2px 4px 0}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;border-radius:10px;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:.02em;
}
.brand-text{min-width:0}
.brand-name{display:block;font-size:17px;font-weight:700;color:var(--ink);line-height:1.3;letter-spacing:-.01em}
.brand-sub{display:block;font-size:12px;color:var(--muted);letter-spacing:.04em;line-height:1.4}
.side-divider{height:1px;background:var(--line);margin:20px 4px 16px}
.side-links{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--body);
  transition:background-color var(--t),color var(--t);
}
.side-link svg{width:18px;height:18px;flex:0 0 18px;stroke:var(--brand-400);stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:stroke var(--t)}
.side-link:hover{background:var(--brand-50);color:var(--brand-900)}
.side-link:hover svg{stroke:var(--brand)}
.side-link.active{background:var(--brand-100);color:var(--brand-900);font-weight:600}
.side-link.active svg{stroke:var(--brand-900)}
.side-link.active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:20px;border-radius:3px;background:var(--accent)}
.side-foot{margin-top:auto;padding-top:24px}
.side-promo{background:var(--brand-50);border:1px solid var(--line);border-radius:var(--r-sm);padding:16px;display:flex;flex-direction:column;gap:12px}
.side-promo p{font-size:13px;font-weight:600;color:var(--brand-900);line-height:1.6}
.side-copy{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.7}

/* ---------- Mobile bar & drawer ---------- */
.mobile-bar{display:none}
.drawer,.drawer-mask{display:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;border:1px solid var(--line);
  background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background-color var(--t),border-color var(--t);
}
.drawer-close svg{width:18px;height:18px;stroke:var(--brand-900);stroke-width:1.5;fill:none;stroke-linecap:round}
.drawer-close:hover{background:var(--brand-50);border-color:var(--line-strong)}
.hamburger{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background-color var(--t),border-color var(--t);
}
.hamburger svg{width:20px;height:20px;stroke:var(--brand-900);stroke-width:1.5;fill:none;stroke-linecap:round}
.hamburger:hover{background:var(--brand-50);border-color:var(--line-strong)}
body.lock{overflow:hidden}

/* ---------- Countdown bar ---------- */
.countdown-bar{position:sticky;top:0;z-index:40;background:var(--brand-900);color:#fff;box-shadow:0 10px 26px -22px rgba(18,28,39,.85)}
.cd-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:54px;padding-top:6px;padding-bottom:6px}
.cd-label{font-size:14px;font-weight:600;letter-spacing:.02em;color:rgba(255,255,255,.94)}
.cd-right{display:flex;align-items:center;gap:16px}
.cd-timer{display:flex;align-items:center;gap:6px}
.cd-hint{font-size:13px;color:rgba(255,255,255,.72);margin-right:2px}
.cd-unit{display:inline-flex;align-items:baseline;gap:3px;background:rgba(255,255,255,.12);border-radius:8px;padding:4px 9px;font-variant-numeric:tabular-nums}
.cd-unit b{font-size:20px;font-weight:700;line-height:1.1;letter-spacing:.02em}
.cd-unit i{font-style:normal;font-size:12px;color:rgba(255,255,255,.7)}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(180deg,var(--brand-50) 0%,#fff 74%);padding:64px 0 76px}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero h1{font-size:42px;line-height:1.28;font-weight:700;letter-spacing:-.01em;color:var(--ink);margin-top:18px}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--body);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;margin-top:32px}
.hero-points li{position:relative;padding:0 20px;font-size:14px;color:var(--muted)}
.hero-points li:first-child{padding-left:0}
.hero-points li + li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:14px;background:var(--line)}
.hero-points strong{color:var(--ink);font-weight:700;margin-right:4px;font-variant-numeric:tabular-nums}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;border:1px solid var(--line);box-shadow:var(--sh-2)}
.hero-float{
  position:absolute;right:14px;bottom:14px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:10px 14px;display:flex;align-items:center;gap:10px;box-shadow:var(--sh-2);
}
.hero-float .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(30,142,90,.16);flex:0 0 8px}
.hero-float strong{display:block;font-size:13px;font-weight:700;color:var(--ink);line-height:1.4}
.hero-float small{display:block;font-size:12px;color:var(--muted);line-height:1.4}

/* ---------- Sections ---------- */
.section{padding:80px 0}
.section-tight{padding:56px 0 80px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.section-head-text h2{position:relative;padding-left:16px;font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.section-head-text h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:22px;border-radius:2px;background:var(--accent)}
.section-desc{padding-left:16px;margin-top:10px;font-size:15px;color:var(--muted);line-height:1.8;max-width:640px}

/* ---------- Selling points ---------- */
.selling-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.selling-main{background:var(--brand-50);border:1px solid var(--line);border-radius:var(--r-card);padding:30px;display:flex;flex-direction:column}
.selling-main h3{font-size:19px;font-weight:600;color:var(--ink);margin-top:12px;line-height:1.5}
.selling-main p{font-size:15px;line-height:1.85;color:var(--body);margin-top:10px}
.selling-main .link-arrow{margin-top:auto;padding-top:18px}
.selling-list{display:grid;grid-template-columns:1fr 1fr;gap:0 28px}
.selling-item{padding:20px 0;border-top:1px solid var(--line)}
.selling-item h3{font-size:17px;font-weight:600;color:var(--ink);margin-top:6px;line-height:1.5}
.selling-item p{font-size:14px;line-height:1.75;color:var(--muted);margin-top:6px}
.num{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--accent);font-variant-numeric:tabular-nums}

/* ---------- Gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(12,1fr);grid-template-rows:172px 172px;gap:16px}
.gallery figure{position:relative;margin:0;overflow:hidden;border-radius:12px;border:1px solid var(--line);background:var(--brand-50)}
.gallery-main{grid-column:span 7;grid-row:span 2}
.gallery-side{grid-column:span 5}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.gallery figure:hover img{transform:scale(1.03)}
.gallery figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:44px 18px 14px;
  font-size:14px;font-weight:600;color:#fff;line-height:1.6;
  background:linear-gradient(180deg,rgba(18,28,39,0) 0%,rgba(18,28,39,.74) 100%);
}
.gallery figcaption span{display:block;font-size:12px;font-weight:400;color:rgba(255,255,255,.78);margin-top:2px}

/* ---------- Signup ---------- */
.signup-band{background:var(--brand-100);padding:72px 0}
.signup-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center}
.signup-copy h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.signup-copy p{margin-top:16px;font-size:16px;line-height:1.85;color:var(--body);max-width:520px}
.signup-points{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.signup-points li{position:relative;padding-left:24px;font-size:15px;color:var(--brand-900);line-height:1.7}
.signup-points li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--accent)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-2)}
.form-title{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--ink);font-size:15px;line-height:1.4;
  transition:border-color var(--t),box-shadow var(--t);
}
.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='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7B8A' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:40px}
.field input::placeholder{color:#9AA9B6}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,88,140,.15)}
.form-note{margin-top:12px;font-size:13px;line-height:1.7;color:var(--muted)}
.form-msg{margin-top:12px;font-size:14px;color:var(--ok);display:none}
.form-msg.show{display:block}

/* ---------- Latest / CMS ---------- */
.lead-card{display:grid;grid-template-columns:240px 1fr;overflow:hidden;margin-bottom:24px;color:inherit}
.lead-card:hover{color:inherit}
.lead-thumb{min-height:170px;background:var(--brand-50)}
.lead-thumb img{width:100%;height:100%;object-fit:cover}
.lead-body{padding:24px 26px;display:flex;flex-direction:column;gap:10px;justify-content:center}
.lead-body h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.lead-body p{font-size:15px;line-height:1.8;color:var(--body);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.post-card{display:flex;flex-direction:column;overflow:hidden;color:inherit}
.post-card:hover{color:inherit}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-50)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.post-body h3{font-size:17px;font-weight:600;line-height:1.55;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body p{font-size:14px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{display:flex;align-items:center;gap:6px;margin-top:auto;padding-top:6px;font-size:13px;color:var(--muted)}
.post-foot svg{width:14px;height:14px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round;flex:0 0 14px}
.empty-state{
  border:1px dashed var(--line-strong);background:var(--brand-50);border-radius:12px;
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;text-align:center;padding:32px;
}
.empty-state svg{width:24px;height:24px;stroke:var(--brand-400);stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
.empty-state h3{font-size:15px;font-weight:600;color:var(--brand-900)}
.empty-state p{font-size:13px;color:var(--muted);max-width:360px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-note{font-size:13px;color:var(--muted);margin-bottom:16px}
.faq-list{max-width:860px;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;transition:border-color var(--t),box-shadow var(--t)}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-900)}
.faq-icon{
  position:relative;flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  transition:transform var(--t),background-color var(--t),border-color var(--t),color var(--t);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:1px}
.faq-icon::before{width:10px;height:1.5px}
.faq-icon::after{width:1.5px;height:10px}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--accent-100);border-color:var(--accent);color:var(--accent-700)}
.faq-body{margin:0 20px 18px;padding-top:12px;border-top:1px solid var(--line);font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand-50);border-top:1px solid var(--line);padding:56px 0 28px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand-row{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.85;color:var(--muted);max-width:330px}
.footer-col h3{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--body)}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{font-size:14px;line-height:1.8;color:var(--body)}
.footer-contact a{color:var(--brand-900);font-weight:600}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;
  font-size:13px;line-height:1.7;color:var(--muted);
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .hero-grid{gap:36px}
  .hero h1{font-size:36px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .site-main{margin-left:0;padding-top:64px}
  .mobile-bar{
    display:flex;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 8px 24px -22px rgba(18,28,39,.7);
    align-items:center;justify-content:space-between;padding:0 16px;
  }
  .mobile-brand{display:flex;align-items:center;gap:10px;color:inherit}
  .mobile-brand:hover{color:inherit}
  .mobile-brand .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:9px;font-size:15px}
  .mobile-brand .brand-name{font-size:16px}
  .mobile-brand .brand-sub{font-size:11px}
  .countdown-bar{top:64px}
  .drawer{
    display:flex;position:fixed;top:0;left:0;bottom:0;width:84%;max-width:340px;z-index:90;
    background:#fff;border-radius:0 16px 16px 0;padding:20px 18px;
    flex-direction:column;overflow-y:auto;
    transform:translateX(-100%);transition:transform 220ms ease-out;
  }
  .drawer.open{transform:translateX(0)}
  .drawer-mask{
    display:block;position:fixed;inset:0;z-index:80;background:rgba(18,28,39,.4);
    opacity:0;pointer-events:none;transition:opacity 220ms ease-out;
  }
  .drawer-mask.open{opacity:1;pointer-events:auto}
  .hero{padding:44px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:32px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/10}
  .section{padding:60px 0}
  .section-tight{padding:40px 0 60px}
  .section-head-text h2{font-size:25px}
  .gallery{grid-template-rows:150px 150px}
  .signup-band{padding:56px 0}
  .signup-grid{grid-template-columns:1fr;gap:32px}
  .signup-copy h2{font-size:25px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .lead-card{grid-template-columns:200px 1fr}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .cd-label{display:none}
  .cd-inner{justify-content:center;gap:10px}
  .cd-right{gap:10px}
  .cd-unit b{font-size:17px}
  .cd-unit{padding:3px 7px}
  .cd-hint{display:none}
  .hero h1{font-size:28px;line-height:1.35}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px}
  .hero-actions .btn-primary,.hero-actions .btn-secondary{flex:1 1 auto;height:48px}
  .hero-points li{font-size:13px;padding:0 14px}
  .section-head{margin-bottom:26px}
  .section-head-text h2{font-size:23px}
  .section-desc{font-size:14px}
  .selling-grid{grid-template-columns:1fr;gap:20px}
  .selling-list{grid-template-columns:1fr;gap:0}
  .selling-main{padding:24px}
  .gallery{display:flex;grid-template-columns:none;grid-template-rows:none;overflow-x:auto;gap:12px;padding-bottom:10px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
  .gallery figure{flex:0 0 78%;height:220px;scroll-snap-align:start}
  .post-grid{grid-template-columns:1fr}
  .lead-card{grid-template-columns:1fr}
  .lead-thumb{min-height:0;aspect-ratio:16/9}
  .lead-body{padding:20px}
  .lead-body h3{font-size:18px}
  .form-card{padding:22px}
  .form-card .btn-primary{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-item summary{font-size:15px;padding:16px 16px}
  .faq-body{margin:0 16px 16px;font-size:14.5px}
}
@media (max-width:519px){
  .hero h1{font-size:26px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn-primary,.hero-actions .btn-secondary{width:100%}
  .cd-unit b{font-size:16px}
  .cd-timer{gap:4px}
  .cd-right{gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important}
  .card:hover,.gallery figure:hover img,.post-card:hover .post-thumb img,.btn-primary:hover{transform:none !important}
}

/* roulang page: article */
:root{
  --blue:#16588C;
  --blue-dark:#0F4168;
  --blue-light:#3C7CAE;
  --blue-soft:#E6EFF7;
  --blue-faint:#F2F7FB;
  --orange:#EA6A2B;
  --orange-dark:#C9531B;
  --orange-soft:#FCEFE6;
  --ink:#121C27;
  --body:#34424F;
  --muted:#6B7B8A;
  --line:#E2E9F0;
  --line-hover:#D6E4F0;
  --page:#F6F8FA;
  --white:#FFFFFF;
  --green:#1E8E5A;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-badge:999px;
  --sh-1:0 1px 2px rgba(18,28,39,.04), 0 10px 30px -18px rgba(18,28,39,.28);
  --sh-2:0 1px 2px rgba(18,28,39,.05), 0 18px 40px -20px rgba(22,88,140,.38);
  --sh-3:0 1px 2px rgba(18,28,39,.05), 0 18px 40px -20px rgba(22,88,140,.38), 0 0 0 1px var(--line);
  --sidebar:248px;
  --content-max:1120px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--page);
  color:var(--body);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--blue);text-decoration:none;transition:color 180ms ease-out}
a:hover{color:var(--orange)}
img{max-width:100%;display:block}
button{font-family:inherit}
::selection{background:var(--blue-soft);color:var(--blue-dark)}

/* ---------- 基础组件 ---------- */
.container{width:100%;max-width:var(--content-max);margin:0 auto;padding:0 40px}
.btn-primary,.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.2;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  cursor:pointer;transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 18px -12px rgba(234,106,43,.9)}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:#fff;color:var(--blue-dark);border-color:var(--line-hover)}
.btn-secondary:hover{background:var(--blue-faint);border-color:var(--blue-light);color:var(--blue-dark)}
.btn-secondary:active{transform:translateY(1px)}
.btn-primary:focus-visible,.btn-secondary:focus-visible{outline:none;box-shadow:0 0 0 2px #fff,0 0 0 4px var(--blue)}
.btn-sm{font-size:14px;padding:9px 16px}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--blue)}
.btn-text svg{width:16px;height:16px;transition:transform 180ms ease-out}
.btn-text:hover{color:var(--orange)}
.btn-text:hover svg{transform:translateX(2px)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);font-size:12px;font-weight:600;line-height:1;white-space:nowrap}
.badge-cat{background:var(--blue-soft);color:var(--blue-dark)}
.badge-status{background:var(--orange-soft);color:var(--orange-dark)}
.badge-live{background:rgba(30,142,90,.1);color:var(--green);border:1px solid rgba(30,142,90,.22)}

/* ---------- 左侧竖向导航 ---------- */
.site-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);z-index:60;
  display:flex;flex-direction:column;
  background:#fff;border-right:1px solid var(--line);
  padding:24px 16px 20px;
}
.side-brand{display:flex;align-items:center;gap:12px;padding:4px 8px 0;color:var(--ink)}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;border-radius:10px;background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 8px 18px -12px rgba(22,88,140,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.04em}
.side-divider{height:1px;background:var(--line);margin:20px 8px}
.side-links{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--body);
  transition:background-color 180ms ease-out,color 180ms ease-out;
}
.side-link svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;opacity:.85}
.side-link:hover{background:var(--blue-faint);color:var(--blue-dark)}
.side-link:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.side-link.active{background:var(--blue-soft);color:var(--blue-dark);font-weight:600}
.side-link.active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--orange)}
.side-foot{margin-top:auto;background:var(--blue-faint);border:1px solid var(--line);border-radius:12px;padding:14px}
.side-foot-text{font-size:13px;color:var(--blue-dark);font-weight:600;margin-bottom:10px}
.side-foot .btn-primary{width:100%}
.side-copy{font-size:12px;color:var(--muted);margin-top:10px;line-height:1.6}

/* ---------- 移动端导航 ---------- */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:70;height:64px;
  align-items:center;justify-content:space-between;
  padding:0 20px;background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(18,28,39,.04);
}
.mobile-brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.mobile-brand .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:14px;border-radius:9px}
.mobile-brand .brand-name{font-size:16px}
.menu-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line-hover);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--blue-dark);cursor:pointer;
  transition:background-color 180ms ease-out,border-color 180ms ease-out;
}
.menu-btn:hover{background:var(--blue-faint);border-color:var(--blue-light)}
.menu-btn:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.menu-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
.drawer-mask{position:fixed;inset:0;background:rgba(18,28,39,.4);z-index:80;opacity:0;pointer-events:none;transition:opacity 180ms ease-out}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:84%;max-width:340px;z-index:90;
  background:#fff;border-radius:0 16px 16px 0;padding:20px 16px;
  display:flex;flex-direction:column;
  transform:translateX(-102%);transition:transform 220ms var(--ease);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 4px 4px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--blue-dark);display:flex;align-items:center;justify-content:center;cursor:pointer}
.drawer-close:hover{background:var(--blue-faint)}
.drawer .side-divider{margin:16px 4px}
.drawer .side-foot{margin-top:24px}

/* ---------- 页面骨架 ---------- */
.page-main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;background:var(--page)}
.article-shell{padding-top:32px;padding-bottom:72px;flex:1;width:100%}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:12px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{color:#B9C6D2}
.breadcrumb .current{color:var(--blue);font-weight:500;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 240px;gap:40px;align-items:start}
.article-head{margin-bottom:8px}
.article-kicker{display:inline-flex;align-items:center;gap:8px;margin-bottom:14px}
.article-title{
  font-size:32px;line-height:1.42;font-weight:700;color:var(--ink);letter-spacing:-.01em;
  margin-bottom:14px;word-break:break-word;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.meta-row .dot{width:1px;height:12px;background:var(--line)}
.meta-row svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;vertical-align:-2px;margin-right:4px}
.rule{height:1px;background:var(--line);border:0;margin:24px 0 28px}

/* ---------- 正文 ---------- */
.article-body{font-size:16px;line-height:1.9;color:var(--body);word-break:break-word;overflow-wrap:anywhere}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  position:relative;font-size:23px;line-height:1.5;font-weight:700;color:var(--ink);
  letter-spacing:-.01em;margin:40px 0 16px;padding-left:16px;scroll-margin-top:96px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.42em;width:4px;height:18px;border-radius:2px;background:var(--orange)}
.article-body h3{font-size:19px;line-height:1.6;font-weight:600;color:var(--ink);margin:28px 0 12px;scroll-margin-top:96px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.5em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.4em 0}
.article-body li::marker{color:var(--blue-light)}
.article-body blockquote{
  margin:24px 0;padding:20px;background:var(--blue-faint);
  border-left:4px solid var(--blue);border-radius:0 12px 12px 0;color:var(--blue-dark);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:24px auto;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0;background:#fff}
.article-body th{background:var(--blue-soft);color:var(--blue-dark);font-weight:600;text-align:left}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px}
.article-body a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--orange)}
.article-body code{background:var(--blue-faint);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:14px}
.article-body hr{border:0;height:1px;background:var(--line);margin:32px 0}

/* ---------- 目录 ---------- */
.article-toc{position:sticky;top:32px}
.toc-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 16px;box-shadow:var(--sh-1)}
.toc-title{font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.04em;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.toc-title span{width:4px;height:14px;border-radius:2px;background:var(--orange)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-link{
  display:block;font-size:14px;line-height:1.6;color:var(--muted);
  padding:7px 10px;border-radius:8px;border-left:2px solid transparent;
  transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out;
}
.toc-link:hover{background:var(--blue-faint);color:var(--blue-dark)}
.toc-link.active{background:var(--blue-faint);color:var(--blue-dark);border-left-color:var(--orange);font-weight:600}
.toc-empty{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- 文末 CTA / 相关推荐 ---------- */
.article-cta{
  margin-top:44px;background:var(--blue-soft);border:1px solid #D8E7F3;border-radius:var(--r-card);
  padding:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.article-cta h2{font-size:20px;font-weight:700;color:var(--blue-dark);margin-bottom:6px}
.article-cta p{font-size:14px;color:#41627C;max-width:46ch;line-height:1.8}
.related{margin-top:48px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.section-head h2{position:relative;font-size:22px;font-weight:700;color:var(--ink);padding-left:14px;letter-spacing:-.01em}
.section-head h2::before{content:"";position:absolute;left:0;top:.35em;width:4px;height:17px;border-radius:2px;background:var(--orange)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform 180ms ease-out,box-shadow 180ms ease-out,border-color 180ms ease-out;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-hover)}
.related-thumb{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--blue-faint)}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 220ms ease-out}
.related-card:hover .related-thumb img{transform:scale(1.03)}
.related-body{padding:18px 20px 20px}
.related-body h3{font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-body .time{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:6px}
.related-body .time svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.back-wrap{margin-top:32px}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--line-hover);background:var(--blue-faint);border-radius:12px;
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:32px 24px;gap:8px;
}
.empty-state svg{width:24px;height:24px;fill:none;stroke:var(--blue-light);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;margin-bottom:6px}
.empty-title{font-size:15px;font-weight:600;color:var(--ink)}
.empty-sub{font-size:13px;color:var(--muted);max-width:42ch;line-height:1.8;margin-bottom:12px}

/* ---------- 页脚 ---------- */
.site-footer{width:100%;background:var(--blue-faint);border-top:1px solid var(--line);padding-top:56px;padding-bottom:28px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px}
.footer-brand-row{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-desc{font-size:14px;color:var(--muted);line-height:1.85;max-width:34ch}
.footer-col h3{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--muted)}
.footer-col a{color:var(--muted);font-size:14px}
.footer-col a:hover{color:var(--blue-dark)}
.footer-contact li{line-height:1.7}
.footer-bottom{border-top:1px solid var(--line);margin-top:40px;padding-top:20px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px}
.footer-bottom p{font-size:13px;color:var(--muted)}

/* ---------- 响应式 ---------- */
@media (max-width:1320px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-toc{display:none}
}
@media (max-width:1023px){
  .site-side{display:none}
  .mobile-bar{display:flex}
  .page-main{margin-left:0}
  .container{padding:0 24px}
  .article-shell{padding-top:24px;padding-bottom:56px}
  .article-title{font-size:26px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .article-title{font-size:25px;line-height:1.45}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .article-cta{padding:22px}
  .article-cta h2{font-size:18px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .section-head h2{font-size:20px}
  .breadcrumb .current{white-space:normal}
}
@media (max-width:768px){
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .related-card:hover,.btn-primary:hover{transform:none}
  .related-card:hover .related-thumb img{transform:none}
}

/* roulang page: category1 */
:root{
    --c-primary:#16588C;
    --c-primary-dark:#0F4168;
    --c-primary-light:#3C7CAE;
    --c-primary-soft:#E6EFF7;
    --c-primary-faint:#F2F7FB;
    --c-accent:#EA6A2B;
    --c-accent-dark:#C9531B;
    --c-accent-soft:#FCEFE6;
    --c-ink:#121C27;
    --c-body:#34424F;
    --c-muted:#6B7B8A;
    --c-line:#E2E9F0;
    --c-line-strong:#D6E4F0;
    --c-bg:#F6F8FA;
    --c-card:#FFFFFF;
    --c-ok:#1E8E5A;
    --radius-card:16px;
    --radius-sm:12px;
    --radius-btn:10px;
    --radius-pill:999px;
    --shadow-1:0 1px 2px rgba(18,28,39,.04),0 10px 30px -18px rgba(18,28,39,.28);
    --shadow-2:0 1px 2px rgba(18,28,39,.05),0 18px 40px -20px rgba(22,88,140,.38);
    --shadow-pop:0 1px 2px rgba(18,28,39,.05),0 18px 40px -20px rgba(22,88,140,.38),0 0 0 1px var(--c-line);
    --sidebar-w:248px;
    --content-max:1120px;
    --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",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;
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.85;
    color:var(--c-body);
    background:var(--c-bg);
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  body a{color:var(--c-primary);text-decoration:none;transition:color 180ms ease-out}
  body a:hover{color:var(--c-accent)}
  body img{display:block;max-width:100%;height:auto}
  body button{font-family:inherit}
  h1,h2,h3,h4,p,figure,ul,ol{margin:0}
  ul,ol{padding-left:0;list-style:none}
  :focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
  .num{font-variant-numeric:tabular-nums}

  /* 布局骨架 */
  .app-shell{min-height:100vh}
  .content-area{display:flex;flex-direction:column;min-height:100vh}
  .content-area main{flex:1 0 auto}
  @media (min-width:1024px){
    .content-area{margin-left:var(--sidebar-w)}
  }
  .container{width:100%;max-width:var(--content-max);margin:0 auto;padding:0 20px}
  @media (min-width:640px){.container{padding:0 32px}}
  @media (min-width:1024px){.container{padding:0 40px}}

  /* 左侧竖向导航 */
  .side-nav{display:none}
  @media (min-width:1024px){
    .side-nav{
      display:flex;flex-direction:column;
      position:fixed;top:0;left:0;
      width:var(--sidebar-w);height:100vh;
      background:#fff;border-right:1px solid var(--c-line);
      padding:24px 18px 18px;
      overflow-y:auto;z-index:40;
    }
  }
  .brand-link{display:flex;align-items:center;gap:12px;color:var(--c-ink)}
  .brand-link:hover{color:var(--c-ink)}
  .brand-mark{
    width:44px;height:44px;flex:0 0 44px;
    display:flex;align-items:center;justify-content:center;
    background:var(--c-primary);color:#fff;
    border-radius:10px;font-size:17px;font-weight:700;letter-spacing:.02em;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25}
  .brand-name{font-size:17px;font-weight:700;color:var(--c-ink)}
  .brand-sub{font-size:12px;color:var(--c-muted);letter-spacing:.04em}
  .side-divider{height:1px;background:var(--c-line);margin:20px 0}
  .side-links{display:flex;flex-direction:column;gap:6px}
  .side-link{
    position:relative;
    display:flex;align-items:center;gap:12px;
    height:44px;padding:0 14px;border-radius:10px;
    font-size:15px;color:var(--c-body);
    transition:background-color 180ms ease-out,color 180ms ease-out;
  }
  .side-link svg{
    width:18px;height:18px;flex:0 0 18px;
    fill:none;stroke:currentColor;stroke-width:1.5;
    stroke-linecap:round;stroke-linejoin:round;
  }
  .side-link:hover{background:var(--c-primary-faint);color:var(--c-primary-dark)}
  .side-link.active{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600}
  .side-link.active::before{
    content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
    border-radius:var(--radius-pill);background:var(--c-accent);
  }
  .side-bottom{margin-top:auto;padding-top:24px}
  .side-tip{
    background:var(--c-primary-faint);
    border:1px solid var(--c-line);
    border-radius:var(--radius-sm);
    padding:14px;
  }
  .side-tip p{font-size:13px;color:var(--c-body);line-height:1.6;margin-bottom:12px}
  .side-copy{margin-top:12px;font-size:12px;color:var(--c-muted);line-height:1.6}

  /* 移动端顶栏与抽屉 */
  .topbar{
    position:sticky;top:0;z-index:50;
    display:flex;align-items:center;justify-content:space-between;
    height:64px;padding:0 16px;
    background:#fff;border-bottom:1px solid var(--c-line);
    box-shadow:0 1px 2px rgba(18,28,39,.04);
  }
  @media (min-width:1024px){.topbar{display:none}}
  .topbar .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:14px;border-radius:9px}
  .topbar .brand-name{font-size:15px}
  .topbar .brand-sub{font-size:11px}
  .menu-btn{
    width:40px;height:40px;display:flex;align-items:center;justify-content:center;
    border:1px solid var(--c-line);border-radius:10px;background:#fff;
    color:var(--c-primary-dark);cursor:pointer;
    transition:background-color 180ms ease-out,border-color 180ms ease-out;
  }
  .menu-btn:hover{background:var(--c-primary-faint);border-color:var(--c-line-strong)}
  .menu-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}
  .drawer-mask{
    position:fixed;inset:0;z-index:55;
    background:rgba(18,28,39,.4);
    opacity:0;pointer-events:none;
    transition:opacity 220ms ease-out;
  }
  .drawer-mask.open{opacity:1;pointer-events:auto}
  .drawer{
    position:fixed;top:0;bottom:0;left:0;z-index:60;
    width:84%;max-width:330px;
    display:flex;flex-direction:column;
    background:#fff;border-radius:0 16px 16px 0;
    padding:20px 16px;
    overflow-y:auto;
    transform:translateX(-104%);
    transition:transform 220ms ease-out;
  }
  .drawer.open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
  .drawer-close{
    width:36px;height:36px;display:flex;align-items:center;justify-content:center;
    border:1px solid var(--c-line);border-radius:10px;background:#fff;color:var(--c-body);cursor:pointer;
  }
  .drawer-close:hover{background:var(--c-primary-faint);color:var(--c-primary-dark)}
  .drawer-close svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}
  @media (min-width:1024px){
    .drawer,.drawer-mask{display:none}
  }

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;line-height:1;
    padding:13px 22px;border-radius:var(--radius-btn);
    border:1px solid transparent;cursor:pointer;
    transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out;
  }
  .btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:transform 180ms ease-out}
  .btn-sm{padding:9px 16px;font-size:14px}
  .btn-primary{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
  .btn-primary:hover{background:var(--c-accent-dark);border-color:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
  .btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
  .btn-primary:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
  .btn-secondary{background:#fff;color:var(--c-primary-dark);border-color:var(--c-line-strong)}
  .btn-secondary:hover{background:var(--c-primary-faint);border-color:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-1px)}
  .btn-secondary:active{transform:translateY(0)}
  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary)}
  .text-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:transform 180ms ease-out}
  .text-link:hover{color:var(--c-accent)}
  .text-link:hover svg{transform:translateX(2px)}

  /* 页头 */
  .page-head{padding:28px 0 4px}
  @media (min-width:1024px){.page-head{padding:44px 0 8px}}
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:14px}
  .crumbs a{color:var(--c-muted)}
  .crumbs a:hover{color:var(--c-primary)}
  .crumbs .sep{color:var(--c-line-strong)}
  .crumbs .current{color:var(--c-primary);font-weight:600}
  .page-title{
    font-size:28px;line-height:1.32;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);
    max-width:840px;
  }
  @media (min-width:1024px){.page-title{font-size:42px;line-height:1.25}}
  .page-lede{margin-top:16px;font-size:15px;color:var(--c-muted);line-height:1.9;max-width:760px}
  @media (min-width:1024px){.page-lede{font-size:16px}}
  .page-lede + .page-lede{margin-top:8px}
  .head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

  /* 标签行 */
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .tag-btn{
    display:inline-flex;align-items:center;height:38px;padding:0 18px;
    border-radius:var(--radius-pill);
    font-size:14px;font-weight:600;line-height:1;
    background:#fff;color:var(--c-primary-dark);
    border:1px solid var(--c-line-strong);
    cursor:pointer;
    transition:background-color 180ms ease-out,border-color 180ms ease-out,color 180ms ease-out;
  }
  .tag-btn:hover{background:var(--c-primary-faint);border-color:var(--c-primary-light)}
  .tag-btn.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
  .tag-btn.is-active:hover{background:var(--c-primary-dark);border-color:var(--c-primary-dark);color:#fff}

  /* 板块 */
  .section{padding:44px 0}
  @media (min-width:1024px){.section{padding:64px 0}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:24px}
  .section-title{
    display:flex;align-items:center;gap:12px;
    font-size:23px;font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--c-ink);
  }
  .section-title::before{
    content:"";width:4px;height:20px;flex:0 0 4px;
    border-radius:var(--radius-pill);background:var(--c-accent);
  }
  @media (min-width:1024px){
    .section-title{font-size:30px}
    .section-title::before{height:26px}
  }
  .section-note{font-size:13px;color:var(--c-muted)}

  /* 卡片 */
  .card{
    display:flex;flex-direction:column;
    background:var(--c-card);
    border:1px solid var(--c-line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-1);
    overflow:hidden;
    transition:transform 180ms ease-out,box-shadow 180ms ease-out,border-color 180ms ease-out;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--c-line-strong)}
  .card-media{position:relative;overflow:hidden;background:var(--c-primary-faint)}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform 180ms ease-out}
  .card:hover .card-media img{transform:scale(1.03)}
  .card-media--wide{aspect-ratio:16/9}
  .card-media--std{aspect-ratio:16/10}
  .card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
  .badge-row{display:flex;flex-wrap:wrap;gap:8px}
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;
    border-radius:var(--radius-pill);
    font-size:12px;font-weight:600;line-height:1;letter-spacing:.01em;white-space:nowrap;
  }
  .badge-cat{background:var(--c-primary-soft);color:var(--c-primary-dark)}
  .badge-status{background:var(--c-accent-soft);color:var(--c-accent-dark)}
  .badge-ok{background:rgba(30,142,90,.1);color:var(--c-ok)}
  .card-title{font-size:18px;font-weight:600;line-height:1.45;color:var(--c-ink)}
  .card-title a{color:var(--c-ink)}
  .card-title a:hover{color:var(--c-primary)}
  .card-text{font-size:14px;line-height:1.75;color:var(--c-muted)}
  .card-meta{
    margin-top:auto;padding-top:12px;
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--c-muted);
  }
  .card-meta svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .card-meta span{display:inline-flex;align-items:center;gap:6px}

  /* 活动网格 */
  .act-grid{display:grid;gap:16px;grid-template-columns:1fr}
  @media (min-width:640px){.act-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.act-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
  @media (min-width:1024px){.act-card--wide{grid-column:span 2}}

  /* 相关推荐 */
  .rel-grid{display:grid;gap:16px;grid-template-columns:1fr}
  @media (min-width:640px){.rel-grid{grid-template-columns:repeat(3,1fr);gap:24px}}

  /* CTA 条 */
  .cta-band{
    background:var(--c-primary-soft);
    border-radius:var(--radius-card);
    padding:28px 20px;
    display:flex;flex-direction:column;gap:20px;
    border:1px solid #D9E6F1;
  }
  @media (min-width:768px){
    .cta-band{flex-direction:row;align-items:center;justify-content:space-between;gap:32px;padding:40px 44px}
  }
  .cta-title{font-size:21px;font-weight:700;line-height:1.4;color:var(--c-ink)}
  @media (min-width:1024px){.cta-title{font-size:26px}}
  .cta-text{margin-top:10px;font-size:14px;line-height:1.8;color:#274A66;max-width:56ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

  /* FAQ */
  .faq-list{max-width:860px}
  .faq-item{
    background:#fff;border:1px solid var(--c-line);
    border-radius:var(--radius-sm);
    box-shadow:var(--shadow-1);
    overflow:hidden;
  }
  .faq-item + .faq-item{margin-top:12px}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;cursor:pointer;
    font-size:16px;font-weight:600;color:var(--c-ink);
    list-style:none;
    transition:background-color 180ms ease-out;
  }
  .faq-item summary:hover{background:var(--c-primary-faint)}
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-icon{
    width:24px;height:24px;flex:0 0 24px;
    display:flex;align-items:center;justify-content:center;
    border-radius:var(--radius-pill);
    background:var(--c-primary-faint);color:var(--c-primary-dark);
    transition:transform 180ms ease-out,background-color 180ms ease-out;
  }
  .faq-icon svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
  .faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--c-accent-soft);color:var(--c-accent-dark)}
  .faq-answer{
    padding:0 20px 18px;
    font-size:15px;line-height:1.8;color:var(--c-muted);
  }
  .faq-answer::before{
    content:"";display:block;height:1px;background:var(--c-line);margin-bottom:12px;
  }

  /* 页脚 */
  .site-footer{
    background:var(--c-primary-faint);
    border-top:1px solid var(--c-line);
    padding:56px 0 28px;
  }
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
  @media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}}
  .footer-brand-row{display:flex;align-items:center;gap:12px}
  .footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:var(--c-muted);max-width:36ch}
  .footer-col h3{font-size:14px;font-weight:600;color:var(--c-ink);letter-spacing:.02em;margin-bottom:14px}
  .footer-col ul{display:grid;gap:10px;font-size:14px}
  .footer-col ul a{color:var(--c-body)}
  .footer-col ul a:hover{color:var(--c-primary)}
  .footer-contact li{font-size:14px;color:var(--c-muted);line-height:1.7}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);
    display:flex;flex-direction:column;gap:6px;
    font-size:13px;color:var(--c-muted);line-height:1.7;
  }
  @media (min-width:768px){
    .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}
  }

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
      transition-duration:.001ms !important;
      animation-duration:.001ms !important;
    }
    .card:hover,.btn-primary:hover,.btn-secondary:hover{transform:none}
    .card:hover .card-media img{transform:none}
    .text-link:hover svg{transform:none}
  }

/* roulang page: category2 */
:root{
    --primary:#16588C;
    --primary-dark:#0F4168;
    --primary-light:#3C7CAE;
    --primary-soft:#E6EFF7;
    --primary-faint:#F2F7FB;
    --accent:#EA6A2B;
    --accent-dark:#C9531B;
    --accent-soft:#FCEFE6;
    --ink:#121C27;
    --text:#34424F;
    --muted:#6B7B8A;
    --line:#E2E9F0;
    --line-strong:#D6E4F0;
    --page:#F6F8FA;
    --card:#FFFFFF;
    --ok:#1E8E5A;
    --r-card:16px;
    --r-sm:12px;
    --r-btn:10px;
    --shadow-1: 0 1px 2px rgba(18,28,39,.04), 0 10px 30px -18px rgba(18,28,39,.28);
    --shadow-2: 0 1px 2px rgba(18,28,39,.05), 0 18px 40px -20px rgba(22,88,140,.38);
    --sidebar-w:248px;
    --content-max:1120px;
    --font-sans: "PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",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(--page);
    color:var(--text);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-0.01em;line-height:1.32;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  img{max-width:100%;display:block;border:0;}
  a{color:var(--primary);text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;}
  a:hover{color:var(--accent);}
  button{font:inherit;cursor:pointer;}
  svg{display:block;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

  .container{
    width:100%;
    max-width:var(--content-max);
    margin:0 auto;
    padding-left:40px;
    padding-right:40px;
  }

  /* ---------- 左侧固定导航 ---------- */
  .sidebar{
    position:fixed;
    inset:0 auto 0 0;
    width:var(--sidebar-w);
    background:var(--card);
    border-right:1px solid var(--line);
    display:flex;
    flex-direction:column;
    padding:24px 18px 20px;
    overflow-y:auto;
    z-index:50;
  }
  .sidebar-brand-row{display:flex;align-items:center;justify-content:space-between;gap:8px;}
  .sidebar-brand{display:flex;align-items:center;gap:12px;min-width:0;}
  .brand-mark{
    width:44px;height:44px;flex:none;
    border-radius:10px;
    background:var(--primary);
    color:#fff;
    display:grid;place-items:center;
    font-size:17px;font-weight:700;letter-spacing:-0.02em;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.35;min-width:0;}
  .brand-name{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;}
  .brand-sub{font-size:12px;color:var(--muted);letter-spacing:.04em;white-space:nowrap;}

  .side-links{
    display:flex;
    flex-direction:column;
    gap:4px;
    margin-top:20px;
    padding-top:20px;
    border-top:1px solid var(--line);
  }
  .side-link{
    position:relative;
    display:flex;align-items:center;gap:12px;
    height:44px;padding:0 14px;
    border-radius:var(--r-btn);
    font-size:15px;color:var(--text);
    transition:background-color .18s ease-out,color .18s ease-out;
  }
  .side-link svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
  .side-link:hover{background:var(--primary-faint);color:var(--primary-dark);}
  .side-link.active{background:var(--primary-soft);color:var(--primary-dark);font-weight:600;}
  .side-link.active::before{
    content:"";position:absolute;left:4px;top:12px;bottom:12px;width:3px;
    border-radius:999px;background:var(--accent);
  }

  .sidebar-foot{margin-top:auto;padding-top:24px;}
  .sidebar-card{
    background:var(--primary-faint);
    border:1px solid var(--line);
    border-radius:var(--r-sm);
    padding:16px;
  }
  .sidebar-card p{font-size:13px;color:var(--text);margin-bottom:12px;line-height:1.6;}
  .sidebar-card .btn-primary{width:100%;}
  .sidebar-copy{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.6;}

  /* ---------- 按钮 / 徽章 ---------- */
  .btn-primary,.btn-secondary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;line-height:1.2;
    padding:12px 22px;border-radius:var(--r-btn);
    border:1px solid transparent;
    transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
  }
  .btn-primary{background:var(--accent);color:#fff;}
  .btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
  .btn-primary:active{transform:translateY(0);}
  .btn-secondary{background:#fff;border-color:var(--line-strong);color:var(--primary-dark);}
  .btn-secondary:hover{background:var(--primary-faint);border-color:var(--primary-light);color:var(--primary-dark);}
  .btn-secondary:active{transform:translateY(1px);}
  .btn-sm{padding:9px 16px;font-size:14px;}

  .badge{
    display:inline-flex;align-items:center;
    height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
  }
  .badge-blue{background:var(--primary-soft);color:var(--primary-dark);}
  .badge-orange{background:var(--accent-soft);color:var(--accent-dark);}
  .badge-solid{background:var(--accent);color:#fff;}
  .badge-ok{background:#E7F5EE;color:var(--ok);}

  /* ---------- 移动端顶部条与抽屉 ---------- */
  .mobile-bar{display:none;}
  .drawer-mask{display:none;}
  .drawer-close{display:none;}

  .main-area{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
  .page-wrap{flex:1 0 auto;padding-top:32px;padding-bottom:0;}

  /* ---------- 面包屑与标题区 ---------- */
  .crumbs{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
  .crumbs a{color:var(--muted);}
  .crumbs a:hover{color:var(--primary);}
  .crumbs span.sep{color:var(--line-strong);}
  .crumbs .current{color:var(--primary);}

  .page-head{margin-top:12px;}
  .page-head h1{
    font-size:42px;
    line-height:1.26;
    letter-spacing:-0.015em;
    max-width:900px;
  }
  .lede{
    margin-top:16px;
    font-size:16px;
    color:var(--muted);
    max-width:760px;
    line-height:1.85;
  }
  .head-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px;font-size:13px;color:var(--muted);}
  .head-meta .dot{width:4px;height:4px;border-radius:999px;background:var(--line-strong);}

  /* ---------- 置顶大图 ---------- */
  .featured{
    position:relative;
    margin-top:32px;
    border-radius:var(--r-card);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-1);
    background:var(--primary-faint);
    transition:box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .featured:hover{box-shadow:var(--shadow-2);border-color:var(--line-strong);}
  .featured img{
    width:100%;
    aspect-ratio:16/7;
    object-fit:cover;
    transition:transform .18s ease-out;
  }
  .featured:hover img{transform:scale(1.03);}
  .featured-body{
    position:absolute;left:0;right:0;bottom:0;
    padding:32px;
    background:linear-gradient(to top, rgba(15,65,104,.90) 0%, rgba(15,65,104,.55) 55%, rgba(15,65,104,0) 100%);
    color:#fff;
  }
  .featured-body h2{color:#fff;font-size:26px;line-height:1.34;margin-top:12px;max-width:820px;}
  .featured-body p{color:rgba(255,255,255,.86);font-size:15px;margin-top:10px;max-width:760px;line-height:1.75;}
  .featured-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.78);margin-top:14px;flex-wrap:wrap;}

  /* ---------- 资讯列表 ---------- */
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:16px;flex-wrap:wrap;
    margin-top:56px;margin-bottom:20px;
  }
  .section-head h2{
    position:relative;
    font-size:30px;
    padding-left:16px;
  }
  .section-head h2::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
    border-radius:999px;background:var(--accent);
  }
  .section-note{font-size:13px;color:var(--muted);}

  .news-list{display:flex;flex-direction:column;gap:24px;}
  .news-item{
    display:grid;
    grid-template-columns:240px 1fr;
    gap:24px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:20px;
    box-shadow:var(--shadow-1);
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
  .news-thumb{
    border-radius:var(--r-sm);
    overflow:hidden;
    background:var(--primary-faint);
  }
  .news-thumb img{width:100%;height:150px;object-fit:cover;transition:transform .18s ease-out;}
  .news-item:hover .news-thumb img{transform:scale(1.03);}
  .news-body{display:flex;flex-direction:column;min-width:0;}
  .news-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
  .news-body h3{font-size:19px;font-weight:600;line-height:1.5;margin-top:10px;}
  .news-body h3 a{color:var(--ink);}
  .news-body h3 a:hover{color:var(--primary);}
  .news-desc{
    margin-top:8px;
    font-size:15px;
    color:var(--muted);
    line-height:1.8;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .news-foot{
    margin-top:auto;
    padding-top:14px;
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:var(--muted);
  }
  .news-time{display:inline-flex;align-items:center;gap:6px;}
  .news-time svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
  .news-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-dark);}
  .news-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease-out;}
  .news-item:hover .news-link{color:var(--accent-dark);}
  .news-item:hover .news-link svg{transform:translateX(2px);}

  /* ---------- 分页 ---------- */
  .pager{
    display:flex;align-items:center;justify-content:center;
    gap:8px;flex-wrap:wrap;
    margin-top:40px;
  }
  .page-btn{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    min-width:42px;height:42px;padding:0 14px;
    border:1px solid var(--line-strong);
    border-radius:var(--r-btn);
    background:#fff;
    font-size:14px;font-weight:600;color:var(--primary-dark);
    transition:background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
  }
  .page-btn:hover{background:var(--primary-faint);border-color:var(--primary-light);color:var(--primary-dark);transform:translateY(-1px);}
  .page-btn.is-current{background:var(--primary);border-color:var(--primary);color:#fff;}
  .page-btn.is-current:hover{transform:none;}
  .page-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}

  /* ---------- CTA 条 ---------- */
  .cta-band{
    margin-top:56px;
    background:var(--primary-soft);
    border:1px solid var(--line-strong);
    border-radius:var(--r-card);
    padding:32px;
    display:flex;align-items:center;justify-content:space-between;gap:28px;
    flex-wrap:wrap;
  }
  .cta-band h2{font-size:24px;line-height:1.4;}
  .cta-band p{font-size:15px;color:var(--text);margin-top:8px;max-width:640px;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--primary-faint);
    border-top:1px solid var(--line);
    padding-top:56px;
    padding-bottom:28px;
    margin-top:80px;
    flex:none;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1.2fr;
    gap:32px;
  }
  .footer-brand-row{display:flex;align-items:center;gap:12px;}
  .footer-desc{font-size:14px;color:var(--muted);margin-top:16px;max-width:320px;line-height:1.8;}
  .footer-col h3{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:14px;}
  .footer-col ul{display:flex;flex-direction:column;gap:10px;}
  .footer-col li{font-size:14px;color:var(--muted);line-height:1.7;}
  .footer-col ul a{color:var(--muted);font-size:14px;}
  .footer-col ul a:hover{color:var(--primary);}
  .footer-contact a{color:var(--primary);}
  .footer-bottom{
    margin-top:36px;
    padding-top:20px;
    border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
    font-size:13px;color:var(--muted);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .container{padding-left:32px;padding-right:32px;}
    .page-head h1{font-size:36px;}
  }

  @media (max-width:1023px){
    .mobile-bar{
      display:flex;
      position:sticky;top:0;
      height:64px;
      align-items:center;justify-content:space-between;
      padding:0 20px;
      background:#fff;
      border-bottom:1px solid var(--line);
      box-shadow:0 1px 2px rgba(18,28,39,.05);
      z-index:70;
    }
    .mobile-brand{display:flex;align-items:center;gap:10px;}
    .mobile-brand .brand-mark{width:38px;height:38px;font-size:15px;border-radius:9px;}
    .mobile-brand .brand-name{font-size:16px;}
    .mobile-brand .brand-sub{font-size:11px;}
    .burger{
      display:grid;place-items:center;
      width:40px;height:40px;
      border-radius:var(--r-btn);
      border:1px solid var(--line);
      background:#fff;
      color:var(--primary-dark);
      cursor:pointer;
      transition:background-color .18s ease-out,border-color .18s ease-out;
    }
    .burger:hover{background:var(--primary-faint);border-color:var(--line-strong);}
    .burger svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;}

    .drawer-mask{
      display:block;
      position:fixed;inset:0;
      background:rgba(18,28,39,.4);
      opacity:0;pointer-events:none;
      transition:opacity .2s ease-out;
      z-index:60;
    }
    #navToggle:checked ~ .drawer-mask{opacity:1;pointer-events:auto;}

    .sidebar{
      width:84%;
      max-width:340px;
      transform:translateX(-100%);
      transition:transform .22s ease-out;
      border-radius:0 16px 16px 0;
      box-shadow:0 18px 40px -20px rgba(22,88,140,.38);
      z-index:80;
      padding:20px 18px;
    }
    #navToggle:checked ~ .sidebar{transform:translateX(0);}
    .drawer-close{
      display:grid;place-items:center;
      width:36px;height:36px;flex:none;
      border-radius:50%;
      border:1px solid var(--line);
      color:var(--muted);
      cursor:pointer;
      transition:background-color .18s ease-out,color .18s ease-out;
    }
    .drawer-close:hover{background:var(--primary-faint);color:var(--primary);}
    .drawer-close svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;}

    .main-area{margin-left:0;}
    .page-wrap{padding-top:24px;}
    .page-head h1{font-size:30px;}
    .section-head h2{font-size:24px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  }

  @media (max-width:767px){
    .container{padding-left:20px;padding-right:20px;}
    .page-head h1{font-size:26px;}
    .featured-body{padding:20px;}
    .featured-body h2{font-size:19px;}
    .featured-body p{font-size:14px;-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden;}
    .featured img{aspect-ratio:16/9;}
    .news-item{grid-template-columns:1fr;gap:16px;padding:16px;}
    .news-thumb img{height:auto;aspect-ratio:16/9;}
    .cta-band{padding:24px;flex-direction:column;align-items:flex-start;}
    .footer-grid{grid-template-columns:1fr;}
    .site-footer{margin-top:56px;padding-top:40px;}
    .section-head{margin-top:40px;}
  }

  @media (prefers-reduced-motion: reduce){
    *{transition:none !important;animation:none !important;}
    .news-item:hover,.featured:hover img,.btn-primary:hover,.page-btn:hover{transform:none;}
  }

/* roulang page: category3 */
:root{
  --blue:#16588C;
  --blue-dark:#0F4168;
  --blue-light:#3C7CAE;
  --blue-soft:#E6EFF7;
  --blue-pale:#F2F7FB;
  --orange:#EA6A2B;
  --orange-dark:#C9531B;
  --orange-soft:#FCEFE6;
  --ink:#121C27;
  --text:#34424F;
  --muted:#6B7B8A;
  --line:#E2E9F0;
  --line-strong:#D6E4F0;
  --page:#F6F8FA;
  --white:#FFFFFF;
  --green:#1E8E5A;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(18,28,39,.04),0 10px 30px -18px rgba(18,28,39,.28);
  --shadow-2:0 1px 2px rgba(18,28,39,.05),0 18px 40px -20px rgba(22,88,140,.38);
  --shadow-3:0 1px 2px rgba(18,28,39,.05),0 18px 40px -20px rgba(22,88,140,.38),0 0 0 1px var(--line);
  --sidebar-w:248px;
  --content-max:1120px;
  --fs-h1:42px;
  --fs-h2:30px;
  --fs-h3:19px;
  --fs-list:17px;
  --fs-body:16px;
  --fs-sm:14px;
  --fs-xs:13px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",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;
  font-family:var(--font-sans);
  font-size:var(--fs-body);
  line-height:1.85;
  color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;line-height:1.35}
p{margin:0}
a{color:var(--blue);text-decoration:none;transition:color 180ms ease-out}
a:hover{color:var(--orange)}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0}
strong{color:var(--ink);font-weight:600}
svg{display:block}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

.shell{min-height:100vh}

/* ============ 左侧竖导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--white);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:26px 18px 22px;
  overflow-y:auto;
  z-index:60;
}
.brand-block{display:flex;align-items:center;gap:11px;text-decoration:none;color:inherit}
.brand-block:hover{color:inherit}
.brand-mark{
  width:44px;height:44px;border-radius:10px;
  background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;letter-spacing:.02em;flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3}
.brand-name{font-size:17px;font-weight:700;color:var(--ink)}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.04em}
.side-divider{height:1px;background:var(--line);margin:20px 0 14px}
.side-links{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;
  border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text);
  transition:background 180ms ease-out,color 180ms ease-out;
}
.side-link svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.side-link:hover{background:var(--blue-pale);color:var(--blue-dark)}
.side-link.active{background:var(--blue-soft);color:var(--blue-dark);font-weight:600}
.side-link.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:999px;background:var(--orange);
}
.side-bottom{margin-top:auto;padding-top:26px}
.side-cta-card{
  background:var(--blue-pale);
  border:1px solid var(--line);
  border-radius:12px;
  padding:16px;
}
.side-cta-title{font-size:13px;font-weight:600;color:var(--blue-dark);margin-bottom:10px}
.side-cta-btn{width:100%;padding:10px 14px;font-size:14px}
.side-copy{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.7;letter-spacing:.01em}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:55;
  height:64px;padding:0 16px;
  align-items:center;justify-content:space-between;
  background:var(--white);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(18,28,39,.04);
}
.hamburger{
  width:40px;height:40px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--white);color:var(--blue-dark);
  transition:background 180ms ease-out,border-color 180ms ease-out;
}
.hamburger:hover{background:var(--blue-pale);border-color:var(--line-strong)}
.hamburger svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}

.drawer-mask{
  display:none;
  position:fixed;inset:0;background:rgba(18,28,39,.4);
  z-index:70;opacity:0;transition:opacity 180ms ease-out;
}
.drawer{
  display:none;
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;
  background:var(--white);
  border-radius:16px 0 0 16px;
  padding:20px 18px 26px;
  z-index:80;
  flex-direction:column;
  transform:translateX(102%);
  transition:transform 220ms ease-out;
  overflow-y:auto;
  box-shadow:-18px 0 40px -24px rgba(18,28,39,.5);
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}
.drawer-close{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--blue-dark);
}
.drawer-close:hover{background:var(--blue-pale)}
.drawer-close svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
body.drawer-open{overflow:hidden}
body.drawer-open .drawer-mask{display:block;opacity:1}
body.drawer-open .drawer{display:flex;transform:translateX(0)}

/* ============ 内容区 ============ */
.main-wrap{margin-left:var(--sidebar-w);min-width:0}
.container{max-width:var(--content-max);margin:0 auto;padding:0 40px}
.page-main{padding-top:32px;padding-bottom:8px}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:var(--fs-xs);color:var(--muted);margin-bottom:12px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb .sep{color:#C4D2DE}
.breadcrumb .current{color:var(--blue);font-weight:500}

.page-head{max-width:860px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-blue{background:var(--blue-soft);color:var(--blue-dark)}
.badge-orange{background:var(--orange-soft);color:var(--orange-dark)}
.page-head h1{
  font-size:var(--fs-h1);
  margin:14px 0 14px;
  letter-spacing:-.015em;
  line-height:1.28;
}
.page-lead{font-size:var(--fs-body);color:var(--muted);line-height:1.85;max-width:760px}

/* ============ 文档两栏 ============ */
.doc-grid{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:40px;
  margin-top:40px;
  align-items:start;
}
.doc-toc{
  position:sticky;top:32px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:16px;
  box-shadow:var(--shadow-1);
}
.doc-toc-title{
  font-size:12px;font-weight:600;color:var(--muted);
  letter-spacing:.08em;margin-bottom:10px;padding-left:12px;
}
.doc-toc a{
  display:block;
  padding:9px 12px;
  border-radius:8px;
  border-left:2px solid transparent;
  font-size:var(--fs-sm);
  color:var(--muted);
  transition:background 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out;
}
.doc-toc a:hover{background:var(--blue-pale);color:var(--blue-dark)}
.doc-toc a.current{
  background:var(--blue-soft);color:var(--blue-dark);
  border-left:2px solid var(--orange);font-weight:600;
}

.doc-body{min-width:0;display:flex;flex-direction:column;gap:48px}
.doc-section{scroll-margin-top:24px}
.doc-section h2{
  position:relative;
  font-size:var(--fs-h2);
  padding-left:18px;
  margin-bottom:16px;
}
.doc-section h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;background:var(--orange);
}
.doc-section p{font-size:var(--fs-body);line-height:1.9;color:var(--text);margin-bottom:16px}
.doc-section p:last-child{margin-bottom:0}

.doc-list{list-style:none;counter-reset:step;display:flex;flex-direction:column;gap:12px;margin:20px 0 0}
.doc-list>li{
  counter-increment:step;
  position:relative;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:12px;
  padding:16px 18px 16px 58px;
  font-size:var(--fs-body);
  line-height:1.8;
  box-shadow:var(--shadow-1);
  transition:box-shadow 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out;
}
.doc-list>li:hover{box-shadow:var(--shadow-2);border-color:var(--line-strong);transform:translateY(-2px)}
.doc-list>li::before{
  content:counter(step);
  position:absolute;left:16px;top:17px;
  width:26px;height:26px;border-radius:9px;
  background:var(--orange-soft);color:var(--orange-dark);
  font-size:var(--fs-xs);font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}

.doc-points{list-style:none;display:flex;flex-direction:column;gap:12px;margin:20px 0 0}
.doc-points li{
  position:relative;padding-left:22px;
  font-size:var(--fs-body);line-height:1.85;color:var(--text);
}
.doc-points li::before{
  content:"";position:absolute;left:0;top:12px;
  width:7px;height:7px;border-radius:2px;background:var(--blue-light);transform:rotate(45deg);
}

.doc-figure{margin:28px 0 0;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);background:var(--blue-pale)}
.doc-figure img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;transition:transform 180ms ease-out}
.doc-figure:hover img{transform:scale(1.03)}
.doc-figure figcaption{font-size:var(--fs-xs);color:var(--muted);text-align:center;padding:10px 16px;background:var(--white);border-top:1px solid var(--line)}

.table-scroll{
  margin-top:24px;
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--white);
  box-shadow:var(--shadow-1);
  -webkit-overflow-scrolling:touch;
}
.doc-table{width:100%;border-collapse:collapse;min-width:560px;font-size:var(--fs-sm)}
.doc-table th{
  background:var(--blue-soft);
  color:var(--blue-dark);
  text-align:left;
  font-weight:600;
  padding:13px 16px;
  white-space:nowrap;
}
.doc-table td{
  padding:13px 16px;
  border-top:1px solid var(--line);
  color:var(--text);
  line-height:1.75;
  vertical-align:top;
}
.doc-table tbody tr:hover td{background:var(--blue-pale)}

/* ============ FAQ ============ */
.faq-block{margin-top:72px;scroll-margin-top:24px}
.faq-block h2{font-size:var(--fs-h2);position:relative;padding-left:18px;margin-bottom:8px}
.faq-block h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;background:var(--orange)}
.faq-hint{font-size:var(--fs-xs);color:var(--muted);margin-bottom:22px;padding-left:18px}
.faq-list{max-width:860px;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:12px;
  padding:18px 20px;
  box-shadow:var(--shadow-1);
  transition:border-color 180ms ease-out,box-shadow 180ms ease-out;
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow-2)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:var(--fs-body);font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  flex:none;
  width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);
  color:var(--blue);
  font-size:16px;font-weight:500;line-height:1;
  display:flex;align-items:center;justify-content:center;
  transition:transform 180ms ease-out,background 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out;
}
.faq-item[open] summary::after{
  transform:rotate(45deg);
  background:var(--orange-soft);color:var(--orange);border-color:var(--orange-soft);
}
.faq-body{
  margin-top:12px;padding-top:12px;border-top:1px solid var(--line);
  font-size:15px;color:var(--muted);line-height:1.8;
}

/* ============ 联系卡 ============ */
.contact-card{
  margin-top:48px;
  background:var(--blue-soft);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-card);
  padding:36px 40px;
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:32px;
  align-items:center;
  scroll-margin-top:24px;
}
.contact-card h2{font-size:26px;margin-bottom:12px}
.contact-card p{font-size:15px;color:var(--text);line-height:1.85;max-width:520px}
.contact-meta{list-style:none;margin-top:18px;display:flex;flex-direction:column;gap:8px}
.contact-meta li{font-size:var(--fs-sm);color:var(--blue-dark)}
.contact-meta a{font-weight:600}
.contact-actions{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.contact-note{font-size:var(--fs-xs);color:var(--muted);line-height:1.7}

/* ============ 按钮 ============ */
.btn-primary,.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;
  padding:12px 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 10px 22px -14px rgba(234,106,43,.95)}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.btn-secondary{background:var(--white);color:var(--blue-dark);border-color:var(--line-strong)}
.btn-secondary:hover{background:var(--blue-pale);border-color:var(--blue-light);color:var(--blue-dark)}
.btn-secondary:active{transform:translateY(1px)}
.btn-secondary:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:var(--fs-sm);font-weight:600;color:var(--blue)}
.link-arrow svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:transform 180ms ease-out}
.link-arrow:hover{color:var(--orange)}
.link-arrow:hover svg{transform:translateX(2px)}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:80px;
  background:var(--blue-pale);
  border-top:1px solid var(--line);
  padding:56px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand-row{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-desc{font-size:var(--fs-sm);color:var(--muted);line-height:1.8;max-width:320px}
.footer-col h3{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:14px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:var(--fs-sm);color:var(--muted)}
.footer-col a:hover{color:var(--orange)}
.footer-contact li{font-size:var(--fs-sm);color:var(--muted);line-height:1.75}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.footer-bottom p{font-size:var(--fs-xs);color:var(--muted)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 32px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .mobile-bar{display:flex}
  .main-wrap{margin-left:0}
  .container{padding:0 24px}
  .page-main{padding-top:24px}
  .doc-grid{grid-template-columns:1fr;gap:24px;margin-top:28px}
  .doc-toc{
    position:static;
    display:flex;gap:8px;overflow-x:auto;
    padding:10px;border-radius:12px;
    box-shadow:var(--shadow-1);
  }
  .doc-toc-title{display:none}
  .doc-toc a{
    white-space:nowrap;
    padding:8px 14px;
    border-left:0;
    border-bottom:2px solid transparent;
    border-radius:8px;
  }
  .doc-toc a.current{border-left:0;border-bottom:2px solid var(--orange)}
  .contact-card{grid-template-columns:1fr;padding:28px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .doc-section h2,.faq-block h2{font-size:26px}
  .page-head h1{font-size:34px}
}
@media (max-width:639px){
  .container{padding:0 20px}
  .page-head h1{font-size:28px;margin:12px 0 12px}
  .doc-section h2,.faq-block h2{font-size:23px;padding-left:16px}
  .faq-hint{padding-left:16px}
  .doc-grid{gap:20px}
  .doc-body{gap:40px}
  .doc-list>li{padding:14px 16px 14px 52px}
  .doc-list>li::before{left:14px;top:15px}
  .faq-block{margin-top:48px}
  .contact-card{padding:22px;margin-top:40px}
  .contact-card h2{font-size:22px}
  .contact-actions{width:100%}
  .contact-actions .btn-primary,.contact-actions .btn-secondary{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:8px}
  .site-footer{margin-top:56px;padding:40px 0 24px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .doc-list>li:hover,.btn-primary:hover,.doc-figure:hover img{transform:none}
}