/* roulang page: index */
/* ==========================================================
   设计变量
   ========================================================== */
:root{
  --brand:#1F4FD8;
  --brand-dark:#1A42B4;
  --brand-light:#EEF3FF;
  --gold:#E8A33D;
  --teal:#12A594;
  --danger:#D14343;
  --ink:#0E1A2B;
  --ink-2:#46566E;
  --ink-3:#6C7B91;
  --border:#E5EAF2;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --footer-bg:#F1F5FB;
  --radius:16px;
  --radius-md:20px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow:0 1px 2px rgba(14,26,43,.04),0 12px 28px -12px rgba(14,26,43,.12);
  --shadow-hover:0 2px 4px rgba(14,26,43,.06),0 20px 38px -16px rgba(14,26,43,.22);
  --ease:.18s ease;
  --container:1200px;
}

/* ==========================================================
   基础重置
   ========================================================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
svg{display:block}
a{color:var(--brand);text-decoration:none;text-underline-offset:3px;transition:color var(--ease)}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
h1{font-size:clamp(30px,4vw,44px);line-height:1.2}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input{font:inherit}
em{font-style:normal}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:3px solid rgba(31,79,216,.35);outline-offset:2px;border-radius:8px}

/* ==========================================================
   布局容器
   ========================================================== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--alt{background:var(--surface)}
.section--soft{background:#FBFCFE}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-sub{margin-top:10px;max-width:660px;color:var(--ink-2);font-size:15.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-light);border:1px solid rgba(31,79,216,.16);
  border-radius:999px;padding:5px 14px;letter-spacing:.02em;
}
.num{font-variant-numeric:tabular-nums}

/* ==========================================================
   导航
   ========================================================== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px -18px rgba(14,26,43,.5)}
.nav{display:flex;align-items:center;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:var(--radius-xs);
  background:var(--brand-light);color:var(--brand);
  display:grid;place-items:center;flex-shrink:0;
}
.brand-text{font-size:15.5px;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:-.01em}
.brand-text:hover{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:10px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;
  padding:0 12px;font-size:15px;font-weight:500;color:var(--ink-2);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:15px;height:2px;
  border-radius:2px;background:var(--brand);transform:scaleX(0);
  transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after,
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:280px;height:40px;padding:0 10px 0 12px;
  background:#F8FAFD;border:1px solid var(--border);border-radius:var(--radius-xs);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.cmd-search:focus-within{
  background:var(--surface);border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(31,79,216,.12);
}
.cmd-search svg{color:var(--ink-3);flex-shrink:0}
.cmd-search input{flex:1;min-width:0;border:none;background:transparent;font-size:14px;color:var(--ink);outline:none}
.cmd-search input::placeholder{color:var(--ink-3)}
.cmd-search kbd{
  font-family:inherit;font-size:11.5px;line-height:1.5;color:var(--ink-3);
  background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:1px 6px;
}
.nav-mini{font-size:14px;font-weight:500;color:var(--ink-2)}
.nav-mini:hover{color:var(--brand)}
.nav-toggle{
  display:none;width:40px;height:40px;place-items:center;
  border:1px solid var(--border);border-radius:var(--radius-xs);color:var(--ink);
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.mobile-panel{
  display:none;position:absolute;left:0;right:0;top:64px;
  background:var(--surface);border-bottom:1px solid var(--border);
  box-shadow:0 22px 34px -24px rgba(14,26,43,.5);padding:8px 0 20px;
}
.mobile-panel.is-open{display:block}
.mobile-panel a{display:block;padding:13px 24px;font-size:15px;font-weight:500;color:var(--ink-2)}
.mobile-panel a.is-active{color:var(--brand);background:var(--brand-light)}
.mp-cta{padding:14px 24px 0}
.mp-cta .btn{width:100%}

/* ==========================================================
   按钮
   ========================================================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),
             box-shadow var(--ease),transform var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 20px -12px rgba(31,79,216,.85)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 24px -12px rgba(31,79,216,.9)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand)}
.btn-link .arrow{transition:transform var(--ease)}
.btn-link:hover .arrow{transform:translateX(6px)}

/* ==========================================================
   徽章 / 标签
   ========================================================== */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;border-radius:999px;font-size:12.5px;font-weight:600}
.badge--soft{background:var(--brand-light);color:var(--brand)}
.badge--gold{background:#FDF4E6;color:#B4771F}
.badge--teal{background:#E7F7F4;color:#0C7C70}
.badge-pill{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;
  border-radius:999px;background:var(--brand-light);border:1px solid rgba(31,79,216,.16);
  color:var(--brand);font-size:13.5px;font-weight:500;
}

/* ==========================================================
   首屏
   ========================================================== */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F2F6FF 100%);
  padding:72px 0 84px;
}
.hero::after{
  content:"";position:absolute;top:-60px;right:-70px;width:440px;height:440px;
  background-image:radial-gradient(rgba(31,79,216,.35) 1.4px,transparent 1.5px);
  background-size:16px 16px;opacity:.22;pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.hero h1{margin-top:20px;max-width:600px}
.hero-sub{margin-top:18px;max-width:540px;font-size:17px;color:var(--ink-2);line-height:1.7}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-figure{position:relative;padding-bottom:26px}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-md);border:1px solid var(--border);
  box-shadow:0 24px 50px -26px rgba(14,26,43,.42);
}
.hero-note{
  position:absolute;left:20px;bottom:0;
  display:flex;align-items:flex-start;gap:10px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:12px 16px;
  box-shadow:0 14px 30px -18px rgba(14,26,43,.45);
  max-width:min(340px,88%);
}
.hero-note .dot{
  width:9px;height:9px;border-radius:50%;background:var(--teal);
  margin-top:7px;flex-shrink:0;box-shadow:0 0 0 4px rgba(18,165,148,.14);
}
.hero-note strong{display:block;font-size:14px;font-weight:600;color:var(--ink)}
.hero-note span{display:block;margin-top:2px;font-size:12.5px;color:var(--ink-3);line-height:1.6}

/* ==========================================================
   卖点三连
   ========================================================== */
.feature-grid{display:grid;grid-template-columns:1.12fr 1fr 1fr;gap:24px;align-items:stretch}
.feature-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.feature-card:hover{transform:translateY(-3px);border-color:rgba(31,79,216,.3);box-shadow:var(--shadow-hover)}
.feature-card--lead{background:var(--brand-light);border-color:rgba(31,79,216,.18);padding:30px}
.feature-icon{
  width:44px;height:44px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--border);color:var(--brand);
  display:grid;place-items:center;margin-bottom:18px;
}
.feature-card--lead .feature-icon{width:54px;height:54px;border-color:rgba(31,79,216,.2)}
.feature-card h3{margin-bottom:10px}
.feature-card p{color:var(--ink-2);font-size:15px}
.feature-card .btn-link{margin-top:auto;padding-top:18px}
.tick-list{display:grid;gap:10px;margin-top:16px}
.tick-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-2)}
.tick-list li::before{
  content:"";position:absolute;left:2px;top:9px;
  width:7px;height:7px;border-radius:50%;background:var(--teal);opacity:.9;
}

/* ==========================================================
   场景演示（图文交错）
   ========================================================== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:72px}
.split-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius);border:1px solid var(--border);
  box-shadow:0 20px 42px -24px rgba(14,26,43,.4);
}
.split--reverse .split-media{order:2}
.split-copy h3{font-size:24px;line-height:1.35}
.split-copy > p{margin-top:14px;color:var(--ink-2);font-size:15.5px}
.step-mini{display:grid;gap:16px;margin-top:24px}
.step-mini li{display:flex;gap:12px;align-items:flex-start}
.step-mini .idx{
  width:26px;height:26px;flex-shrink:0;border-radius:50%;
  background:var(--brand-light);color:var(--brand);
  display:grid;place-items:center;font-size:13px;font-weight:700;
}
.step-mini strong{display:block;font-size:15px;font-weight:600}
.step-mini span{display:block;margin-top:2px;font-size:14px;color:var(--ink-2)}
.progress-list{display:grid;gap:16px;margin-top:26px}
.progress-head{display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--ink-2)}
.progress-head em{color:var(--ink-3);font-size:12.5px}
.progress-track{margin-top:8px;height:6px;border-radius:999px;background:#E9EEF7;overflow:hidden}
.progress-track .fill{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),#5B85EE)}

/* ==========================================================
   社会认同
   ========================================================== */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
}
.stat{padding:28px 24px;border-right:1px solid var(--border)}
.stat:last-child{border-right:none}
.stat strong{display:block;font-size:28px;font-weight:700;color:var(--brand);letter-spacing:-.02em;line-height:1.2}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--ink-2)}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px}
.review-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.review-card:hover{transform:translateY(-3px);border-color:rgba(31,79,216,.3);box-shadow:var(--shadow-hover)}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  background:var(--brand-light);color:var(--brand);
  display:grid;place-items:center;font-size:16px;font-weight:700;
}
.review-head strong{display:block;font-size:15px;font-weight:600}
.stars{color:var(--gold);font-size:13px;letter-spacing:2px;margin-top:2px}
.review-card p{font-size:14.5px;color:var(--ink-2);line-height:1.75}
.cert-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.cert-row li{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 15px;border:1px dashed var(--border);border-radius:999px;
  background:#FAFBFE;font-size:13.5px;color:var(--ink-3);
}
.cert-row li::before{content:"";width:6px;height:6px;border-radius:50%;background:#B9C4D6}

/* ==========================================================
   资讯列表
   ========================================================== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(31,79,216,.3);box-shadow:var(--shadow-hover)}
.news-thumb{aspect-ratio:16/9;background:var(--brand-light);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{display:flex;flex-direction:column;flex:1;padding:20px 20px 20px}
.news-title{margin:12px 0 10px;font-size:17px;line-height:1.5;font-weight:600}
.news-title a{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  color:var(--ink);
}
.news-title a:hover{color:var(--brand)}
.news-summary{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:14px;color:var(--ink-2);line-height:1.7;
}
.news-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-3);
}
.news-meta .arrow{color:var(--brand);font-size:15px;transition:transform var(--ease)}
.news-card:hover .news-meta .arrow{transform:translateX(4px)}
.news-empty{
  grid-column:1/-1;min-height:200px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:40px 24px;text-align:center;
  background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius);
}
.news-empty .empty-art{
  width:56px;height:56px;border-radius:var(--radius-sm);
  background:var(--brand-light);color:var(--brand);display:grid;place-items:center;
}
.news-empty p{color:var(--ink-2);font-size:15px}

/* ==========================================================
   FAQ
   ========================================================== */
.faq-list{
  max-width:820px;margin:0 auto;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:none}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:400;color:var(--brand);line-height:1;
  transition:transform var(--ease);
}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 24px 22px 28px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ==========================================================
   尾部 CTA
   ========================================================== */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:var(--brand-light);border:1px solid rgba(31,79,216,.16);
  border-radius:var(--radius-md);padding:40px 48px;
}
.cta-band h2{font-size:clamp(22px,2.2vw,28px)}
.cta-band p{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0}

/* ==========================================================
   页脚
   ========================================================== */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--border);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--ink-2);max-width:320px;line-height:1.75}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--ink)}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--ink-2)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}

/* ==========================================================
   移动端底部转化条
   ========================================================== */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:none;align-items:center;justify-content:space-between;gap:12px;
  height:64px;padding:0 16px;background:var(--surface);
  border-top:1px solid var(--border);
  box-shadow:0 -10px 26px -18px rgba(14,26,43,.5);
}
.mobile-bar span{font-size:14px;font-weight:600;color:var(--ink)}

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width:1180px){
  .cmd-search{width:230px}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .cmd-search{display:none}
  .nav-toggle{display:grid}
  .section{padding:68px 0}
  .hero{padding:56px 0 68px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{padding-bottom:22px}
  .feature-grid{grid-template-columns:1fr 1fr}
  .feature-card--lead{grid-column:1/-1}
  .split{gap:36px}
  .stats{grid-template-columns:1fr 1fr}
  .stat{border-bottom:1px solid var(--border)}
  .stat:nth-child(2n){border-right:none}
  .stat:nth-child(n+3){border-bottom:none}
  .review-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .nav-mini{display:none}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .hero h1{margin-top:16px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .feature-grid{grid-template-columns:1fr}
  .feature-card--lead{grid-column:auto}
  .split{grid-template-columns:1fr}
  .split--reverse .split-media{order:0}
  .split + .split{margin-top:52px}
  .review-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-bar{display:flex}
  body{padding-bottom:64px}
}
@media (max-width:520px){
  h1{font-size:28px}
  h2{font-size:22px}
  .btn{height:44px;padding:0 18px;font-size:14.5px}
  .brand-text{font-size:14px;white-space:normal;line-height:1.2;max-width:150px}
  .stats{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--border)}
  .stat:last-child{border-bottom:none}
  .cta-band{padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .hero-note{left:12px;right:12px;max-width:none}
}

/* roulang page: article */
:root{
  --brand:#1F4FD8;
  --brand-deep:#1A42B4;
  --brand-soft:#EEF3FF;
  --brand-line:rgba(31,79,216,.30);
  --gold:#E8A33D;
  --teal:#12A594;
  --ink:#0E1A2B;
  --ink-2:#46566E;
  --ink-3:#6B7A90;
  --line:#E5EAF2;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --footer-bg:#F1F5FB;
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,26,43,.04), 0 12px 28px -12px rgba(14,26,43,.12);
  --sh-2:0 2px 6px rgba(14,26,43,.06), 0 18px 38px -14px rgba(14,26,43,.20);
  --ease:.18s ease;
  --nav-h:64px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{letter-spacing:-.01em;margin:0;line-height:1.3;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--brand);text-decoration:none;text-underline-offset:3px;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

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

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px -8px rgba(31,79,216,.55);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px -8px rgba(31,79,216,.55);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand-line);color:var(--brand);}
.btn-ghost:active{transform:scale(.98);}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;}
.btn-link svg{transition:transform var(--ease);}
.btn-link:hover svg{transform:translateX(6px);}
.btn[disabled]{opacity:.4;pointer-events:none;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.01em;
}
.badge-soft{background:var(--brand-soft);color:var(--brand);border:1px solid rgba(31,79,216,.14);}
.badge-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(14,26,43,.35);}
.nav{display:flex;align-items:center;gap:24px;height:var(--nav-h);}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,#2E64F0,#1B45B8);color:#fff;
  box-shadow:0 6px 14px -8px rgba(31,79,216,.85);
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink-2);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}

.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:270px;height:40px;padding:0 10px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-input);
  color:var(--ink-3);transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.cmd-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(31,79,216,.13);}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);
}
.cmd-search input::placeholder{color:var(--ink-3);}
.cmd-search kbd{
  font-family:inherit;font-size:11.5px;line-height:1;color:var(--ink-2);
  border:1px solid var(--line);background:#fff;border-radius:6px;padding:4px 6px;
}
.nav-mini{font-size:14px;font-weight:500;color:var(--ink-2);}
.nav-mini:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  align-items:center;justify-content:center;color:var(--ink-2);background:#fff;
}
.nav-toggle:hover{color:var(--brand);border-color:var(--brand-line);}

.mobile-panel{
  display:none;flex-direction:column;gap:2px;
  border-top:1px solid var(--line);padding:12px 24px 20px;background:#fff;
}
.mobile-panel.is-open{display:flex;}
.mobile-panel a{padding:11px 4px;font-size:15px;font-weight:500;color:var(--ink-2);border-radius:8px;}
.mobile-panel a.is-active{color:var(--brand);font-weight:600;}
.mobile-panel a:hover{color:var(--brand);}
.mp-cta{margin-top:10px;}
.mp-cta .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13.5px;color:var(--ink-3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#C4CDDC;}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--ink);font-weight:600;}

/* ---------- 文章布局 ---------- */
.detail-wrap{padding:40px 0 72px;}
.detail-grid{display:grid;grid-template-columns:minmax(0,1fr) 296px;gap:48px;align-items:start;}

.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:40px 44px 36px;
}
.post-head{max-width:780px;}
.post-badge-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;}
.post-title{
  font-size:clamp(26px,3.4vw,38px);line-height:1.28;font-weight:700;
  color:var(--ink);margin-bottom:20px;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  padding-bottom:22px;border-bottom:1px solid var(--line);
  font-size:13.5px;color:var(--ink-2);
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-item svg{color:var(--ink-3);}
.meta-time{font-variant-numeric:tabular-nums;}
.author{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--ink);}
.author-dot{
  width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:700;
}
.share-group{display:inline-flex;align-items:center;gap:8px;margin-left:auto;}
.share-btn{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;
  font-size:13px;font-weight:500;color:var(--ink-2);
}
.share-btn:hover{border-color:var(--brand-line);color:var(--brand);}

/* ---------- 正文富文本 ---------- */
.post-content{max-width:780px;margin-top:28px;color:var(--ink);}
.post-content>*:first-child{margin-top:0;}
.post-content p{font-size:17px;line-height:1.85;color:#22304A;margin:0 0 18px;}
.post-content h2{
  position:relative;font-size:clamp(21px,2.2vw,25px);line-height:1.4;font-weight:700;
  margin:40px 0 16px;padding-left:14px;color:var(--ink);
}
.post-content h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;background:var(--brand);
}
.post-content h3{
  position:relative;font-size:19px;line-height:1.45;font-weight:600;
  margin:30px 0 12px;padding-left:16px;color:var(--ink);
}
.post-content h3::before{
  content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;border-radius:50%;background:var(--brand);
}
.post-content h4{font-size:17px;font-weight:600;margin:24px 0 10px;}
.post-content ul,.post-content ol{margin:0 0 20px;padding-left:6px;}
.post-content li{position:relative;padding-left:20px;font-size:16.5px;line-height:1.9;color:#22304A;margin-bottom:8px;}
.post-content ul>li::before{
  content:"";position:absolute;left:4px;top:.78em;width:6px;height:6px;border-radius:50%;background:var(--brand);
}
.post-content ol{counter-reset:pc;}
.post-content ol>li{counter-increment:pc;}
.post-content ol>li::before{
  content:counter(pc);position:absolute;left:0;top:.22em;
  width:17px;height:17px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  font-size:11.5px;font-weight:700;line-height:17px;text-align:center;
}
.post-content blockquote{
  margin:22px 0;padding:16px 22px;background:#F4F6FA;
  border-left:3px solid var(--brand);border-radius:0 var(--r-btn) var(--r-btn) 0;
  color:var(--ink-2);
}
.post-content blockquote p{font-size:16px;color:var(--ink-2);margin:0;}
.post-content img{border-radius:12px;margin:22px 0 8px;width:100%;height:auto;}
.post-content figure{margin:22px 0;}
.post-content figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:8px;}
.post-content hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.post-content table{
  width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-btn);overflow:hidden;
}
.post-content th{background:var(--brand-soft);color:var(--brand);font-weight:600;text-align:left;}
.post-content th,.post-content td{padding:12px 14px;border-bottom:1px solid var(--line);}
.post-content tr:last-child td{border-bottom:0;}
.post-content strong{font-weight:700;color:var(--ink);}
.post-content a{color:var(--brand);text-decoration:underline;text-decoration-thickness:1px;text-decoration-color:rgba(31,79,216,.4);}
.post-content a:hover{text-decoration-color:var(--brand);}

/* ---------- 空态 ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:260px;text-align:center;padding:36px 20px;
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--bg);
}
.empty-ico{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);
}
.empty-state h2{font-size:20px;}
.empty-state p{font-size:15px;color:var(--ink-2);max-width:420px;}

/* ---------- 文末 ---------- */
.post-foot{max-width:780px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-label{font-size:13px;color:var(--ink-3);font-weight:600;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--bg);border:1px solid var(--line);font-size:13.5px;font-weight:500;color:var(--ink-2);
}
.tag:hover{border-color:var(--brand-line);color:var(--brand);background:#fff;}
.post-back{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}

/* ---------- 侧栏 ---------- */
.post-aside{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:22px;
}
.aside-card h3{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--ink);}
.aside-list li+li{border-top:1px solid var(--line);}
.aside-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14px;font-weight:500;color:var(--ink-2);
}
.aside-list a:hover{color:var(--brand);}
.aside-list span{font-size:12.5px;color:var(--ink-3);font-variant-numeric:tabular-nums;}
.aside-note{font-size:13.5px;line-height:1.75;color:var(--ink-2);}
.aside-cta{
  background:var(--brand-soft);border:1px solid rgba(31,79,216,.14);border-radius:var(--r-card);
  padding:22px;
}
.aside-cta h3{font-size:15px;color:var(--brand);margin-bottom:8px;}
.aside-cta p{font-size:13.5px;color:var(--ink-2);margin-bottom:14px;}
.aside-cta .btn{width:100%;}

/* ---------- 底部 CTA ---------- */
.bottom-cta{margin-top:64px;padding:0 0 8px;}
.cta-box{
  background:var(--brand-soft);border:1px solid rgba(31,79,216,.14);
  border-radius:20px;padding:34px 36px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.cta-box h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-box p{font-size:15px;color:var(--ink-2);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);margin-top:72px;padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--ink-2);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--ink);}
.footer-col li+li{margin-top:10px;}
.footer-col a{font-size:14px;color:var(--ink-2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-3);
}

/* ---------- 移动端转化条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;height:64px;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 20px -14px rgba(14,26,43,.4);
  align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
}
.mobile-bar span{font-size:13.5px;font-weight:600;color:var(--ink);}
.mobile-bar .btn{height:44px;padding:0 18px;}

/* ---------- 断点 ---------- */
@media (max-width:1200px){
  .detail-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .post-aside{display:none;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .cmd-search{display:none;}
  .nav-mini{display:none;}
  .nav-toggle{display:inline-flex;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .article-card{padding:26px 20px 24px;}
  .detail-wrap{padding:28px 0 56px;}
  .post-content p{font-size:16.5px;}
  .share-group{margin-left:0;width:100%;}
  .cta-box{padding:26px 20px;border-radius:16px;}
  .cta-actions .btn{flex:1 1 auto;}
  .site-footer{padding:44px 0 84px;}
  .mobile-bar{display:flex;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;max-width:160px;overflow:hidden;text-overflow:ellipsis;}
  .btn{height:44px;padding:0 18px;}
  .post-title{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .post-content h2{font-size:20px;}
}

/* roulang page: category1 */
:root{
  --brand:#1F4FD8;
  --brand-dark:#1A42B4;
  --brand-soft:#EEF3FF;
  --brand-line:rgba(31,79,216,.3);
  --gold:#E8A33D;
  --teal:#12A594;
  --ink:#0E1A2B;
  --muted:#46566E;
  --line:#E5EAF2;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --danger:#D14343;
  --radius:16px;
  --radius-btn:12px;
  --radius-field:10px;
  --shadow:0 1px 2px rgba(14,26,43,.04),0 12px 28px -12px rgba(14,26,43,.12);
  --shadow-hover:0 2px 4px rgba(14,26,43,.06),0 18px 36px -14px rgba(14,26,43,.2);
  --shadow-btn:0 8px 20px -8px rgba(31,79,216,.5);
  --section:88px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:700;line-height:1.3}
h1{font-size:clamp(30px,4vw,44px);line-height:1.2}
h2{font-size:clamp(24px,2.6vw,32px)}
h3{font-size:20px;font-weight:600;line-height:1.4}
p{margin:0}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--section) 0}
.section-alt{background:#fff}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .lead{margin-top:14px;color:var(--muted);font-size:16px}
.rule{display:inline-block;width:44px;height:3px;border-radius:2px;background:var(--gold);margin-bottom:16px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -12px rgba(14,26,43,.28)}
.nav{display:flex;align-items:center;gap:28px;min-height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}
.brand-mark{
  width:32px;height:32px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;flex:none;box-shadow:0 6px 14px -8px rgba(31,79,216,.8);
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;list-style:none;margin:0 auto 0 8px}
.nav-link{
  position:relative;display:inline-block;padding:21px 0;font-size:15px;font-weight:500;
  color:var(--muted);text-decoration:none;transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .18s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;flex:none}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:280px;height:40px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--radius-field);background:#F7F9FC;
  color:var(--muted);transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.cmd-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(31,79,216,.12)}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-family:inherit;font-size:14px;color:var(--ink);
}
.cmd-search input::placeholder{color:#8A98AC}
.cmd-search kbd{
  font-family:inherit;font-size:12px;line-height:1;padding:4px 6px;border-radius:6px;
  border:1px solid var(--line);background:#fff;color:var(--muted);
}
.nav-mini{font-size:14px;font-weight:500;color:var(--muted);text-decoration:none;white-space:nowrap}
.nav-mini:hover{color:var(--brand)}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius-field);background:#fff;color:var(--ink);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand-line);color:var(--brand)}
.mobile-panel{display:none;background:#fff;border-top:1px solid var(--line);padding:8px 24px 20px}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:block;padding:12px 0;font-size:15px;font-weight:500;color:var(--ink);
  text-decoration:none;border-bottom:1px solid var(--line);
}
.mobile-panel a.is-active{color:var(--brand)}
.mobile-panel .mp-cta{padding-top:16px}
.mobile-panel .mp-cta .btn{width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
  border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(14,26,43,.06)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-btn)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;text-decoration:none}
.text-link::after{content:"→";transition:transform .18s ease}
.text-link:hover::after{transform:translateX(6px)}

/* ---------- crumbs ---------- */
.crumbs{padding:20px 0 0;font-size:14px;color:var(--muted)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";margin-right:8px;color:#A9B4C6}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--brand)}
.crumbs [aria-current]{color:var(--ink);font-weight:600}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;padding:36px 0 72px;
  background-image:
    linear-gradient(180deg,rgba(255,255,255,.94),rgba(242,246,255,.96)),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover,cover;
  background-position:center,center;
  border-bottom:1px solid var(--line);
}
.hero-inner{max-width:820px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  padding:6px 14px;border-radius:999px;background:var(--brand-soft);
  border:1px solid rgba(31,79,216,.16);color:var(--brand);font-size:13px;font-weight:600;
}
.eyebrow .dot{width:6px;height:6px;border-radius:999px;background:var(--gold)}
.hero-sub{margin-top:18px;font-size:17px;color:var(--muted);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--brand);font-size:13px;font-weight:600;
}
.badge svg{color:var(--teal)}

/* ---------- steps ---------- */
.steps-wrap{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:56px;align-items:start}
.steps{list-style:none;counter-reset:step}
.steps>li{position:relative;padding:0 0 36px 76px;counter-increment:step}
.steps>li::before{
  content:counter(step);position:absolute;left:0;top:0;
  width:48px;height:48px;border-radius:999px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 10px 22px -12px rgba(31,79,216,.85);
}
.steps>li::after{
  content:"";position:absolute;left:23px;top:56px;bottom:10px;width:2px;
  background:linear-gradient(180deg,rgba(31,79,216,.28),rgba(31,79,216,.06));border-radius:2px;
}
.steps>li:last-child{padding-bottom:0}
.steps>li:last-child::after{display:none}
.step-title{font-size:18px;font-weight:600;margin-bottom:8px}
.step-text{color:var(--muted);font-size:15.5px}
.step-meta{
  display:inline-flex;align-items:center;gap:6px;margin-top:12px;
  font-size:13px;font-weight:600;color:var(--teal);
}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px;position:sticky;top:88px;
}
.side-card h3{margin-bottom:16px}
.side-list{list-style:none;display:grid;gap:14px}
.side-list li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);line-height:1.7}
.side-list li::before{
  content:"";flex:none;width:7px;height:7px;margin-top:9px;border-radius:999px;background:var(--brand);
}
.side-card .btn{width:100%;margin-top:22px}

/* ---------- point cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap)}
.point-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:28px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.point-card:hover{transform:translateY(-3px);border-color:var(--brand-line);box-shadow:var(--shadow-hover)}
.point-card .icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.point-card h3{margin-bottom:10px}
.point-card p{color:var(--muted);font-size:15px}
.point-list{list-style:none;margin-top:14px;display:grid;gap:10px}
.point-list li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);line-height:1.7}
.point-list li::before{
  content:"";flex:none;width:16px;height:16px;margin-top:5px;border-radius:999px;
  background:var(--brand-soft);border:1px solid rgba(31,79,216,.25);
}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media img{border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow)}
.split-body h2{margin-bottom:18px}
.split-body p{color:var(--muted)}
.split-body .btn{margin-top:26px}
.check-list{list-style:none;margin-top:20px;display:grid;gap:12px}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--muted)}
.check-list li::before{
  content:"✓";flex:none;width:20px;height:20px;margin-top:6px;border-radius:999px;
  background:rgba(18,165,148,.12);color:var(--teal);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;
}

/* ---------- terminals ---------- */
.term-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.term-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.term-card:hover{transform:translateY(-3px);border-color:var(--brand-line);box-shadow:var(--shadow-hover)}
.term-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.term-body{padding:22px;display:flex;flex-direction:column;flex:1}
.term-body h3{margin-bottom:10px}
.term-body p{color:var(--muted);font-size:14.5px}
.term-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
  display:inline-flex;align-items:center;padding:5px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:600;
}
.tag-gold{background:rgba(232,163,61,.14);color:#9A6A16}
.tag-teal{background:rgba(18,165,148,.12);color:#0B7A6D}

/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:0 26px;overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-icon{position:relative;flex:none;width:24px;height:24px;border-radius:999px;background:var(--brand-soft);color:var(--brand)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .18s ease,opacity .18s ease;
}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-item[open] summary{color:var(--brand)}
.faq-body{padding:0 0 24px 4px;font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- cta ---------- */
.cta-band{
  background:var(--brand-soft);border:1px solid rgba(31,79,216,.14);
  border-radius:20px;padding:34px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.2vw,26px);margin-bottom:8px}
.cta-band p{color:var(--muted);font-size:15px;max-width:560px}
.cta-band .btn-primary{background:var(--brand)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:#F1F5FB;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--muted);font-size:14px;max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink)}
.footer-col ul{list-style:none;display:grid;gap:12px}
.footer-col a{font-size:14px;color:var(--muted);text-decoration:none}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#6B7A91;
}

/* ---------- mobile bar ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;height:64px;
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px -14px rgba(14,26,43,.4);
  align-items:center;justify-content:space-between;gap:16px;padding:0 16px;
  transition:transform .18s ease;
}
.mobile-bar.is-hidden{transform:translateY(100%)}
.mobile-bar span{font-size:13.5px;font-weight:600;color:var(--muted)}
.mobile-bar .btn{height:44px;padding:0 18px;font-size:14px}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .steps-wrap{grid-template-columns:minmax(0,1fr) 330px;gap:40px}
}
@media (max-width:1024px){
  :root{--section:72px}
  .nav-links,.cmd-search,.nav-mini{display:none}
  .nav-toggle{display:inline-flex}
  .nav{gap:16px;justify-content:space-between}
  .nav-right{margin-left:auto}
  .steps-wrap{grid-template-columns:1fr}
  .side-card{position:static}
  .split{grid-template-columns:1fr;gap:32px}
  .term-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--section:56px}
  .container{padding:0 16px}
  .cat-hero{padding:28px 0 56px}
  .hero-actions .btn{flex:1 1 100%}
  .grid-2{grid-template-columns:1fr}
  .term-grid{grid-template-columns:1fr}
  .steps>li{padding-left:64px}
  .steps>li::before{width:42px;height:42px;font-size:16px}
  .steps>li::after{left:20px;top:50px}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .mobile-bar{display:flex}
  .site-footer{padding-bottom:96px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .brand-text{font-size:15px}
  .btn{height:44px;padding:0 18px;font-size:14.5px}
  .btn-sm{height:38px;padding:0 14px}
  .point-card,.side-card{padding:22px}
  .badge{font-size:12.5px;padding:6px 12px}
  .faq{padding:0 18px}
}

/* roulang page: category2 */
:root{
  --c-primary:#1F4FD8;
  --c-primary-dark:#1A42B4;
  --c-primary-soft:#EEF3FF;
  --c-gold:#E8A33D;
  --c-teal:#12A594;
  --c-ink:#0E1A2B;
  --c-ink-2:#46566E;
  --c-line:#E5EAF2;
  --c-bg:#F7F9FC;
  --c-surface:#FFFFFF;
  --c-footer:#F1F5FB;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-hero:20px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(14,26,43,.04), 0 12px 28px -12px rgba(14,26,43,.12);
  --sh-card-hover:0 2px 4px rgba(14,26,43,.06), 0 18px 36px -14px rgba(14,26,43,.18);
  --sh-nav:0 1px 2px rgba(14,26,43,.06), 0 8px 20px -14px rgba(14,26,43,.24);
  --sh-btn:0 8px 18px -8px rgba(31,79,216,.55);
  --sp-section:88px;
  --sp-section-m:56px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Inter,sans-serif;
  --tr:.18s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;text-underline-offset:2px;}
a:hover{text-decoration:underline;text-decoration-thickness:1px;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{letter-spacing:-.01em;line-height:1.3;}
h1{font-size:clamp(30px,4vw,44px);line-height:1.2;font-weight:700;}
h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
:focus-visible{outline:3px solid rgba(31,79,216,.35);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-section) 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head p{margin-top:14px;color:var(--c-ink-2);font-size:16.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--c-primary);background:var(--c-primary-soft);
  border:1px solid rgba(31,79,216,.16);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-gold);}
.title-underline{position:relative;display:inline-block;}
.title-underline::after{
  content:"";position:absolute;left:0;bottom:-8px;width:56px;height:3px;
  border-radius:2px;background:var(--c-gold);
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--tr),border-color var(--tr);
}
.site-header.is-scrolled{box-shadow:var(--sh-nav);}
.nav{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:700;font-size:16px;letter-spacing:-.01em;}
.brand:hover{text-decoration:none;color:var(--c-primary);}
.brand-mark{
  width:32px;height:32px;border-radius:10px;display:inline-flex;
  align-items:center;justify-content:center;flex:0 0 auto;
  background:var(--c-primary);color:#fff;
}
.brand-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);transition:color var(--tr),background var(--tr);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-primary);transform:scaleX(0);
  transform-origin:left center;transition:transform var(--tr);
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);text-decoration:none;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;width:272px;height:40px;
  padding:0 10px 0 12px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:var(--c-bg);color:var(--c-ink-2);
  transition:border-color var(--tr),box-shadow var(--tr),background var(--tr);
}
.cmd-search:focus-within{
  background:#fff;border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(31,79,216,.14);
}
.cmd-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px;
}
.cmd-search input::placeholder{color:#8C9AB0;}
.cmd-search kbd{
  font-family:var(--font-sans);font-size:12px;color:var(--c-ink-2);
  background:#fff;border:1px solid var(--c-line);border-bottom-width:2px;
  border-radius:6px;padding:1px 6px;line-height:1.4;
}
.nav-mini{font-size:14.5px;font-weight:500;color:var(--c-ink-2);padding:8px 4px;white-space:nowrap;}
.nav-mini:hover{color:var(--c-primary);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);align-items:center;justify-content:center;color:var(--c-ink);
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}
.mobile-panel{display:none;border-top:1px solid var(--c-line);background:#fff;padding:8px 24px 20px;}
.mobile-panel a{display:block;padding:12px 4px;font-size:15.5px;color:var(--c-ink);border-bottom:1px solid var(--c-line);}
.mobile-panel a.is-active{color:var(--c-primary);font-weight:600;}
.mobile-panel a:hover{text-decoration:none;color:var(--c-primary);}
.mobile-panel .mp-cta{margin-top:16px;}
.mobile-panel .mp-cta .btn{width:100%;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-md);
  font-size:15.5px;font-weight:600;white-space:nowrap;
  transition:transform var(--tr),box-shadow var(--tr),background var(--tr),border-color var(--tr),color var(--tr);
}
.btn:hover{text-decoration:none;}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 1px 2px rgba(14,26,43,.08);}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-btn);}
.btn-ghost{background:#fff;color:var(--c-ink);border:1px solid var(--c-line);}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 16px;font-size:14.5px;border-radius:var(--r-sm);}
.btn-lg{height:52px;padding:0 26px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);
}
.btn-text span.arrow{transition:transform var(--tr);}
.btn-text:hover span.arrow{transform:translateX(6px);}
.btn-text:hover{text-decoration:none;}

/* ============ 面包屑 ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--c-line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13.5px;color:var(--c-ink-2);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#B6C1D2;}
.crumb a{color:var(--c-ink-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb [aria-current="page"]{color:var(--c-ink);font-weight:600;}

/* ============ Hero ============ */
.hero{
  position:relative;
  background-color:#fff;
  background-image:linear-gradient(180deg,rgba(255,255,255,.96) 0%,rgba(242,246,255,.94) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(31,79,216,.16) 1px,transparent 1px);
  background-size:18px 18px;
  -webkit-mask-image:linear-gradient(120deg,transparent 45%,#000 100%);
  mask-image:linear-gradient(120deg,transparent 45%,#000 100%);
  opacity:.5;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:64px 0 72px;}
.hero h1{margin-bottom:18px;}
.hero-sub{font-size:17.5px;line-height:1.8;color:var(--c-ink-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 22px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:#fff;border:1px solid rgba(31,79,216,.18);
  padding:6px 12px;border-radius:var(--r-pill);
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-teal);}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-hero);border:1px solid var(--c-line);
  box-shadow:var(--sh-card);background:#fff;
}
.hero-note{
  position:absolute;left:20px;right:20px;bottom:-24px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-card);padding:16px 18px;
  display:flex;align-items:center;gap:14px;
}
.hero-note .num{
  font-size:22px;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1;
}
.hero-note .txt{font-size:13.5px;line-height:1.6;color:var(--c-ink-2);}

/* ============ 图文交错 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split+.split{margin-top:72px;}
.split.reverse .split-media{order:2;}
.split-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--c-line);box-shadow:var(--sh-card);
}
.split-copy h3{font-size:22px;margin-bottom:12px;}
.split-copy p{color:var(--c-ink-2);margin-bottom:16px;}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:10px;font-size:15.5px;color:var(--c-ink);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:14px;height:8px;border-left:2px solid var(--c-teal);border-bottom:2px solid var(--c-teal);
  transform:rotate(-45deg);border-radius:1px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  font-size:12.5px;font-weight:600;color:var(--c-ink-2);
  background:var(--c-bg);border:1px solid var(--c-line);
  padding:4px 12px;border-radius:var(--r-pill);
}

/* ============ 清单表 ============ */
.table-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-card);overflow:hidden;
}
.table-card table{width:100%;border-collapse:collapse;font-size:15px;}
.table-card thead th{
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13.5px;font-weight:700;letter-spacing:.02em;text-align:left;
  padding:14px 20px;border-bottom:1px solid var(--c-line);white-space:nowrap;
}
.table-card tbody td{
  padding:18px 20px;border-bottom:1px solid var(--c-line);vertical-align:top;color:var(--c-ink-2);
}
.table-card tbody tr:last-child td{border-bottom:0;}
.table-card tbody tr:hover{background:#FAFBFE;}
.table-card td strong{display:block;color:var(--c-ink);font-size:15.5px;font-weight:600;margin-bottom:2px;}
.table-card td .cell-hint{display:block;font-size:13px;color:#7E8CA3;}

/* ============ 2×2 链接卡 ============ */
.link-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.link-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);box-shadow:var(--sh-card);padding:26px 24px;
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.link-card:hover{
  text-decoration:none;transform:translateY(-3px);
  border-color:rgba(31,79,216,.3);box-shadow:var(--sh-card-hover);
}
.link-card .lc-icon{
  width:44px;height:44px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);margin-bottom:16px;
}
.link-card h3{font-size:18px;margin-bottom:8px;color:var(--c-ink);}
.link-card p{font-size:14.5px;color:var(--c-ink-2);margin-bottom:14px;}
.link-card .lc-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
.link-card:hover .lc-more .arrow{transform:translateX(6px);}
.link-card .lc-more .arrow{transition:transform var(--tr);}

/* ============ FAQ ============ */
.faq{max-width:820px;margin:0 auto;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-card);overflow:hidden;}
.faq details{border-bottom:1px solid var(--c-line);}
.faq details:last-child{border-bottom:0;}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color var(--tr),background var(--tr);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--c-primary);background:#FAFBFE;}
.faq .faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-size:16px;line-height:1;transition:transform var(--tr),background var(--tr),color var(--tr);
}
.faq details[open] .faq-icon{background:var(--c-primary);color:#fff;border-color:var(--c-primary);transform:rotate(180deg);}
.faq .faq-body{padding:0 22px 22px 26px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}

/* ============ CTA ============ */
.cta-band{
  background:var(--c-primary-soft);border:1px solid rgba(31,79,216,.14);
  border-radius:var(--r-hero);padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:clamp(21px,2.2vw,26px);margin-bottom:8px;}
.cta-band p{color:var(--c-ink-2);font-size:15.5px;max-width:620px;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-footer);border-top:1px solid var(--c-line);margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:60px 0 40px;
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--c-ink-2);max-width:320px;line-height:1.8;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--c-ink);}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--c-ink-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#6C7A91;
}

/* ============ 移动底栏 ============ */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:64px;background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -6px 18px -12px rgba(14,26,43,.3);
  align-items:center;justify-content:space-between;gap:14px;padding:0 16px;
  transition:transform var(--tr);
}
.mobile-cta.is-hidden{transform:translateY(110%);}
.mobile-cta .mc-text{font-size:13.5px;font-weight:600;color:var(--c-ink);}
.mobile-cta .btn{height:44px;padding:0 18px;font-size:14.5px;}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-links{gap:0;}
  .cmd-search{width:220px;}
}
@media (max-width:1024px){
  :root{--sp-section:72px;}
  .nav-links,.cmd-search,.nav-mini{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-panel.is-open{display:block;}
  .hero-inner{grid-template-columns:1fr;gap:44px;padding:48px 0 72px;}
  .hero-sub{max-width:none;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:0;}
  .split+.split{margin-top:56px;}
  .link-grid{gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .section{padding:var(--sp-section-m) 0;}
  .section-tight{padding:48px 0;}
  .mobile-cta{display:flex;}
  body{padding-bottom:64px;}
  .table-card table,
  .table-card tbody,
  .table-card tr,
  .table-card td{display:block;width:100%;}
  .table-card thead{display:none;}
  .table-card tr{border-bottom:1px solid var(--c-line);padding:6px 0;}
  .table-card tr:last-child{border-bottom:0;}
  .table-card tbody td{border-bottom:0;padding:8px 20px;}
  .table-card td::before{
    content:attr(data-label);display:block;font-size:12.5px;font-weight:700;
    color:var(--c-primary);margin-bottom:4px;
  }
  .link-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 28px;}
  .cta-band{padding:28px 22px;}
  .hero-note{position:static;margin-top:16px;}
}
@media (max-width:520px){
  h1{font-size:27px;}
  h2{font-size:22px;}
  .btn{height:44px;padding:0 18px;font-size:15px;}
  .btn-lg{height:46px;}
  .hero-actions .btn{flex:1 1 100%;}
  .brand-text{font-size:15px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
  --primary:#1F4FD8;
  --primary-dark:#1A42B4;
  --primary-soft:#EEF3FF;
  --primary-10:rgba(31,79,216,.10);
  --primary-30:rgba(31,79,216,.30);
  --gold:#E8A33D;
  --teal:#12A594;
  --danger:#D14343;
  --ink:#0E1A2B;
  --text-2:#46566E;
  --border:#E5EAF2;
  --page:#F7F9FC;
  --card:#FFFFFF;
  --footer-bg:#F1F5FB;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(14,26,43,.04),0 12px 28px -12px rgba(14,26,43,.12);
  --shadow-card-hover:0 2px 4px rgba(14,26,43,.06),0 20px 38px -14px rgba(14,26,43,.20);
  --shadow-btn:0 8px 18px -8px rgba(31,79,216,.55);
  --shadow-header:0 2px 12px rgba(14,26,43,.07);
  --ease:.18s ease;
  --section-y:88px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--page);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;text-underline-offset:3px;transition:color var(--ease),border-color var(--ease);}
a:hover{color:var(--primary-dark);text-decoration:underline 1px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{letter-spacing:-0.01em;line-height:1.3;font-weight:700;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-header);}
.nav{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-weight:700;font-size:16.5px;white-space:nowrap;}
.brand:hover{text-decoration:none;color:var(--primary);}
.brand-mark{
  width:30px;height:30px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);flex:none;
}
.brand-text{letter-spacing:-0.01em;}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;}
.nav-link{
  display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--text-2);
  position:relative;transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft);text-decoration:none;}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:272px;height:40px;padding:0 10px 0 12px;
  background:#FBFCFE;border:1px solid var(--border);border-radius:var(--radius-input);
  color:var(--text-2);transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.cmd-search:focus-within{
  background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 4px var(--primary-10);
}
.cmd-search svg{flex:none;color:var(--text-2);}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.cmd-search input::placeholder{color:#8B99AE;}
.cmd-search kbd{
  font-family:inherit;font-size:11.5px;line-height:1;
  padding:4px 6px;border:1px solid var(--border);border-radius:6px;
  background:#fff;color:#8B99AE;
}
.nav-mini{font-size:14.5px;color:var(--text-2);white-space:nowrap;}
.nav-mini:hover{color:var(--primary);text-decoration:none;}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--border);border-radius:var(--radius-input);
  align-items:center;justify-content:center;color:var(--text-2);background:#fff;
}
.nav-toggle:hover{border-color:var(--primary-30);color:var(--primary);}
.mobile-panel{
  display:none;flex-direction:column;gap:4px;
  padding:12px 24px 20px;border-top:1px solid var(--border);background:#fff;
}
.mobile-panel a{
  padding:12px 4px;font-size:15.5px;font-weight:500;color:var(--text-2);
  border-bottom:1px solid var(--border);
}
.mobile-panel a:last-of-type{border-bottom:0;}
.mobile-panel a:hover{text-decoration:none;color:var(--primary);}
.mobile-panel a.is-active{color:var(--primary);font-weight:600;}
.mobile-panel.is-open{display:flex;}
.mp-cta{padding-top:12px;}
.mp-cta .btn{width:100%;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn:hover{text-decoration:none;}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px -10px rgba(26,66,180,.6);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--border);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 16px;font-size:14.5px;border-radius:10px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);}
.text-link::after{content:"→";transition:transform var(--ease);}
.text-link:hover{text-decoration:none;}
.text-link:hover::after{transform:translateX(6px);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-y) 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);}
.section-head p{margin-top:12px;color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:var(--primary-soft);border:1px solid rgba(31,79,216,.14);
  padding:5px 12px;border-radius:var(--radius-pill);margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);}
.breadcrumb{padding:20px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-2);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#A9B4C6;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb [aria-current]{color:var(--ink);font-weight:600;}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F2F6FF 100%);
  border-bottom:1px solid var(--border);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(31,79,216,.35) 1px,transparent 1px);
  background-size:18px 18px;
  opacity:.07;pointer-events:none;
  mask-image:radial-gradient(circle at 88% 12%,#000 0%,transparent 62%);
  -webkit-mask-image:radial-gradient(circle at 88% 12%,#000 0%,transparent 62%);
}
.cat-hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;padding:64px 0 72px;
}
.cat-hero h1{font-size:clamp(30px,4vw,44px);line-height:1.2;margin-bottom:16px;}
.cat-hero .lead{font-size:17px;color:var(--text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.hero-badges span{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:500;color:var(--primary);
  background:#fff;border:1px solid rgba(31,79,216,.18);
  padding:6px 12px;border-radius:var(--radius-pill);
}
.hero-badges span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--teal);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:20px;border:1px solid var(--border);box-shadow:var(--shadow-card);
}
.hero-note{
  position:relative;margin:-32px 16px 0;padding:16px 18px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.hero-note strong{display:block;font-size:15px;margin-bottom:4px;}
.hero-note span{font-size:13.5px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-groups{display:grid;gap:48px;}
.faq-group-head{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
.faq-group-head .idx{
  width:32px;height:32px;border-radius:10px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-weight:700;font-size:14px;
}
.faq-group-head h3{font-size:20px;font-weight:700;}
.faq-group-head p{font-size:14px;color:var(--text-2);margin-left:auto;}
.faq-card{
  max-width:880px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;align-items:flex-start;gap:16px;
  padding:18px 22px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:background var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#FAFBFE;}
.faq-item summary:focus-visible{outline-offset:-2px;}
.faq-icon{
  margin-left:auto;flex:none;width:26px;height:26px;border-radius:8px;
  border:1px solid var(--border);background:#FBFCFE;color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;line-height:1;font-weight:500;
  transition:transform var(--ease),background var(--ease),border-color var(--ease);
}
.faq-icon::before{content:"+";}
.faq-item[open] .faq-icon{background:var(--primary-soft);border-color:var(--primary-30);}
.faq-item[open] .faq-icon::before{content:"−";}
.faq-a{padding:0 22px 20px 26px;font-size:15px;line-height:1.8;color:var(--text-2);}
.faq-a p+p{margin-top:10px;}
.faq-a ul{margin-top:10px;display:grid;gap:6px;}
.faq-a li{position:relative;padding-left:16px;}
.faq-a li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--primary-30);}

/* ---------- 对照卡 ---------- */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.compare-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.compare-card:hover{transform:translateY(-3px);border-color:var(--primary-30);box-shadow:var(--shadow-card-hover);}
.compare-card .tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;padding:5px 12px;border-radius:var(--radius-pill);
  margin-bottom:18px;
}
.tag-self{background:rgba(18,165,148,.10);color:#0E8577;}
.tag-help{background:var(--primary-soft);color:var(--primary);}
.compare-card h3{font-size:19px;margin-bottom:10px;}
.compare-card>p{font-size:14.5px;color:var(--text-2);margin-bottom:18px;}
.compare-list{display:grid;gap:12px;}
.compare-list li{
  position:relative;padding-left:26px;font-size:15px;color:var(--text-2);line-height:1.7;
}
.compare-list li::before{
  content:"";position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:50%;
  background:var(--primary-soft);border:1px solid var(--primary-30);
}
.compare-list li::after{
  content:"";position:absolute;left:5px;top:12px;width:4px;height:4px;border-radius:50%;background:var(--primary);
}

/* ---------- 联系方式 / 表单 ---------- */
.contact-wrap{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:24px;align-items:start;}
.contact-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-card);
}
.contact-card h3{font-size:19px;margin-bottom:14px;}
.contact-list{display:grid;gap:18px;}
.contact-list li{display:grid;gap:4px;}
.contact-list strong{font-size:14px;font-weight:600;color:var(--ink);}
.contact-list span{font-size:14px;color:var(--text-2);}
.contact-note{
  margin-top:20px;padding:14px 16px;border-radius:12px;
  background:var(--primary-soft);border:1px solid rgba(31,79,216,.14);
  font-size:13.5px;color:var(--primary-dark);
}
.form-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-card);
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.field{display:grid;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:var(--ink);}
.field .hint{font-size:12.5px;color:#8B99AE;}
.control{
  width:100%;height:46px;padding:0 14px;
  background:#FBFCFE;border:1px solid var(--border);border-radius:var(--radius-input);
  font-size:14.5px;color:var(--ink);outline:none;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
textarea.control{height:auto;min-height:118px;padding:12px 14px;line-height:1.7;resize:vertical;}
select.control{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8B99AE 50%),linear-gradient(135deg,#8B99AE 50%,transparent 50%);background-position:calc(100% - 18px) 20px,calc(100% - 13px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.control::placeholder{color:#A6B1C2;}
.control:hover{border-color:#D3DBE8;}
.control:focus{background:#fff;border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-10);}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:22px;}
.form-actions .tip{font-size:13px;color:var(--text-2);}

/* ---------- 尾块 CTA ---------- */
.cta-band{
  background:var(--primary-soft);border:1px solid rgba(31,79,216,.14);
  border-radius:20px;padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:620px;}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap;flex:none;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--border);padding:56px 0 24px;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2.6fr));gap:32px;}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--text-2);max-width:320px;}
.footer-col h4{font-size:14.5px;margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7A8798;
}

/* ---------- 移动端底部条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  height:64px;padding:0 16px;background:#fff;
  border-top:1px solid var(--border);box-shadow:0 -6px 18px rgba(14,26,43,.08);
  align-items:center;justify-content:space-between;gap:12px;
}
.mobile-bar span{font-size:13.5px;font-weight:600;color:var(--ink);}
.mobile-bar.is-hidden{display:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .cmd-search{width:220px;}
}
@media (max-width:1024px){
  :root{--section-y:72px;}
  .nav-links{display:none;}
  .cmd-search{display:none;}
  .nav-mini{display:none;}
  .nav-toggle{display:inline-flex;}
  .cat-hero-inner{grid-template-columns:1fr;gap:36px;padding:48px 0 56px;}
  .contact-wrap{grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  :root{--section-y:56px;}
  .container{padding:0 16px;}
  .mobile-panel{padding:12px 16px 20px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;}
  .cta-band .actions{width:100%;}
  .cta-band .actions .btn{flex:1;justify-content:center;}
  .form-grid{grid-template-columns:1fr;}
  .mobile-bar{display:flex;}
  body{padding-bottom:64px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-group-head{flex-wrap:wrap;}
  .faq-group-head p{margin-left:0;width:100%;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:30px;}
  .btn{height:44px;padding:0 18px;font-size:15px;}
  .btn-sm{height:40px;font-size:14px;}
  .hero-actions .btn{flex:1 1 100%;}
  .faq-item summary{padding:16px 16px;font-size:15.5px;}
  .faq-a{padding:0 16px 18px 16px;}
  .compare-card,.contact-card,.form-card{padding:22px;}
  .hero-note{margin:-24px 12px 0;}
}