/* roulang page: index */
:root{
  --brand:#1B5DA8;
  --brand-deep:#123F73;
  --brand-soft:#EDF4FC;
  --brand-line:#CFE0F2;
  --accent:#D97742;
  --accent-soft:#FBEEE5;
  --ink:#17212C;
  --text:#4A5A6B;
  --muted:#7C8B9A;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --border:#E4EAF1;
  --divider:#EEF2F6;
  --r-btn:10px;
  --r-card:16px;
  --r-lg:20px;
  --r-img:12px;
  --shadow-card:0 1px 2px rgba(23,33,44,.05),0 10px 24px -14px rgba(23,33,44,.18);
  --shadow-hover:0 2px 6px rgba(23,33,44,.06),0 18px 36px -18px rgba(27,93,168,.28);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --sidebar-w:248px;
  --bs-primary:#1B5DA8;
  --bs-body-color:#4A5A6B;
  --bs-body-bg:#F5F7FA;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.wrap{max-width:1160px;margin:0 auto;padding:0 48px}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;z-index:1040;
  width:var(--sidebar-w);height:100vh;
  display:flex;flex-direction:column;
  background:#fff;border-right:1px solid var(--border);
  padding:22px 16px 18px;
}
.sb-brand{display:flex;align-items:center;gap:12px;padding:0 6px 22px;border-bottom:1px solid var(--divider)}
.sb-logo{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;
}
.sb-brand-txt{display:flex;flex-direction:column;line-height:1.35}
.sb-brand-txt strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:0}
.sb-brand-txt small{font-size:12px;color:var(--muted)}
.sb-nav{display:flex;flex-direction:column;gap:4px;padding-top:18px;flex:1 1 auto}
.sb-link{
  display:flex;align-items:center;gap:12px;
  min-height:44px;padding:0 14px;
  font-size:15px;color:var(--text);border-radius:10px;
  transition:background-color var(--t),color var(--t);
  position:relative;
}
.sb-link i{width:18px;text-align:center;font-size:14px;color:var(--muted);transition:color var(--t)}
.sb-link:hover{background:var(--brand-soft);color:var(--brand)}
.sb-link:hover i{color:var(--brand)}
.sb-link.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.sb-link.active i{color:var(--brand-deep)}
.sb-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.sb-link.sub{font-size:14px;min-height:40px;color:var(--muted)}
.sb-sep{height:1px;background:var(--divider);margin:14px 6px}
.sb-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--divider)}
.sb-card{background:var(--brand-soft);border-radius:12px;padding:16px}
.sb-phone{font-size:15px;font-weight:700;color:var(--brand-deep);letter-spacing:.2px}
.sb-note{font-size:12px;color:var(--muted);margin-top:2px;margin-bottom:12px}
.sb-copy{font-size:12px;color:var(--muted);margin-top:14px;padding:0 6px}

/* ---------- 顶部移动导航 ---------- */
.topbar{display:none}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,33,44,.45);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:1039;
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ---------- 通用按钮 ---------- */
.btn-main,.btn-line,.btn-ghost,.btn-text{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  cursor:pointer;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 10px 20px -16px rgba(27,93,168,.9)}
.btn-main:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.btn-line{background:#fff;border-color:var(--brand-line);color:var(--brand)}
.btn-line:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-deep)}
.btn-ghost{background:#fff;border-color:var(--brand-line);color:var(--brand);height:38px;padding:0 16px;font-size:14px;border-radius:8px}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep)}
.btn-text{height:auto;padding:0;background:none;color:var(--brand);font-size:15px;font-weight:600}
.btn-text i{font-size:13px;transition:transform var(--t)}
.btn-text:hover{color:var(--brand-deep)}
.btn-text:hover i{transform:translateX(3px)}
.btn-main:active,.btn-line:active{transform:translateY(0)}

/* ---------- 主结构 ---------- */
.shell{margin-left:var(--sidebar-w)}
.section{padding:96px 0}
.section.tight{padding:64px 0}
.section.alt{background:#fff;border-top:1px solid var(--divider);border-bottom:1px solid var(--divider)}
.sec-head{margin-bottom:36px;max-width:760px}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 12px;margin-bottom:14px;
  letter-spacing:.4px;
}
.sec-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
h2.sec-title{font-size:32px;font-weight:700;color:var(--ink);line-height:1.35;letter-spacing:0}
.sec-sub{margin-top:12px;font-size:16px;color:var(--text);max-width:40em}
.sec-head.row-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;flex-wrap:wrap}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:80px 0 0;background:var(--bg)}
.hero-dots{
  position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(27,93,168,.5) 1px,transparent 1px);
  background-size:22px 22px;opacity:.09;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 72%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 72%);
}
.badge-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;color:var(--brand-deep);
  background:#fff;border:1px solid var(--brand-line);border-radius:999px;
  padding:6px 14px;margin-bottom:20px;
}
.badge-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.hero-title{
  font-size:44px;line-height:1.25;font-weight:700;color:var(--ink);letter-spacing:0;
}
.hero-title .hl{color:var(--brand)}
.hero-sub{margin-top:20px;font-size:16px;line-height:1.85;color:var(--text);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--brand-soft);aspect-ratio:4/3;box-shadow:var(--shadow-card)}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.float-card{
  position:absolute;right:18px;bottom:18px;
  background:#fff;border-radius:12px;padding:14px 18px;
  box-shadow:0 12px 28px -18px rgba(23,33,44,.45);
  display:flex;flex-direction:column;line-height:1.4;border:1px solid var(--border);
}
.fc-num{font-size:24px;font-weight:700;color:var(--brand)}
.fc-label{font-size:12px;color:var(--muted)}
.hero-stats{margin-top:56px;border-top:1px solid var(--border);padding:28px 0 0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:0 24px;border-left:1px solid var(--border)}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{font-size:26px;font-weight:700;color:var(--brand);line-height:1.2}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px}
.stat-note{font-size:12px;color:var(--muted);margin-top:16px;padding-bottom:40px}
/* 深色状态条 */
.statusbar{
  margin-top:8px;margin-bottom:56px;
  background:#123F73;border-radius:var(--r-card);
  padding:20px 26px;display:flex;flex-wrap:wrap;align-items:center;gap:18px 36px;
  color:#DCE8F6;
}
.statusbar .st-main{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:600;color:#fff}
.statusbar .st-dot{width:9px;height:9px;border-radius:50%;background:#4CC38A;box-shadow:0 0 0 4px rgba(76,195,138,.18)}
.statusbar .st-item{font-size:13px;color:#B9CDE4}
.statusbar .st-item strong{color:#fff;font-weight:600}

/* ---------- 功能分组 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.feature-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-card);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-line)}
.fc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.fc-index{font-size:12px;font-weight:700;color:var(--brand);letter-spacing:1px}
.fc-icon{
  width:40px;height:40px;border-radius:10px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.feature-card h3{font-size:20px;font-weight:600;color:var(--ink);line-height:1.4}
.feature-card .fc-desc{margin-top:10px;font-size:15px;color:var(--text)}
.feature-list{margin-top:18px;display:flex;flex-direction:column;gap:9px}
.feature-list li{position:relative;padding-left:16px;font-size:15px;color:var(--text);line-height:1.7}
.feature-list li::before{
  content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;
  border-radius:2px;background:var(--brand);
}

/* ---------- 使用场景 ---------- */
.scene-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.pill{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border-radius:999px;font-size:14px;font-weight:600;
  background:#fff;border:1px solid var(--border);color:var(--text);
  transition:background-color var(--t),color var(--t),border-color var(--t);
}
.pill.active{background:var(--brand);border-color:var(--brand);color:#fff}
.pill:hover{border-color:var(--brand-line);color:var(--brand)}
.pill.active:hover{color:#fff}
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scene-card{
  display:grid;grid-template-columns:170px 1fr;gap:20px;align-items:center;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-card);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-line)}
.scene-card:nth-child(even){grid-template-columns:1fr;align-items:start}
.scene-media{border-radius:var(--r-img);overflow:hidden;background:var(--brand-soft);aspect-ratio:4/3}
.scene-card:nth-child(even) .scene-media{aspect-ratio:16/9}
.scene-media img{width:100%;height:100%;object-fit:cover}
.scene-card h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.5}
.scene-card p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.8}
.scene-card .btn-text{margin-top:12px;font-size:14px}

/* ---------- 案例 ---------- */
.case-main{
  background:var(--card);border-radius:var(--r-lg);border:1px solid var(--border);
  border-left:4px solid var(--brand);padding:36px;box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1fr 1.15fr;gap:36px;align-items:center;
}
.case-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:var(--brand-soft)}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-quote{font-size:18px;line-height:1.9;color:var(--ink)}
.case-meta{margin-top:16px;font-size:14px;color:var(--muted)}
.case-nums{display:flex;flex-wrap:wrap;gap:36px;margin-top:26px;padding-top:22px;border-top:1px solid var(--divider)}
.case-num{font-size:28px;font-weight:700;color:var(--brand);line-height:1.2}
.case-num-label{font-size:13px;color:var(--muted)}
.mini-cases{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:24px}
.mini-case{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--shadow-card);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.mini-case:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-line)}
.mini-icon{
  width:48px;height:48px;flex:0 0 48px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.mini-case h3{font-size:16px;font-weight:600;color:var(--ink)}
.mini-case p{font-size:14px;color:var(--muted);line-height:1.75;margin-top:4px}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-card);padding:30px 26px;box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;transition:box-shadow var(--t),transform var(--t);
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.price-card.featured{
  border:2px solid var(--brand);box-shadow:0 2px 6px rgba(23,33,44,.06),0 24px 44px -24px rgba(27,93,168,.5);
}
.price-badge{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--brand);color:#fff;font-size:12px;font-weight:600;
  padding:4px 14px;border-radius:999px;letter-spacing:.5px;
}
.price-name{font-size:16px;font-weight:600;color:var(--ink)}
.price-for{font-size:14px;color:var(--muted);margin-top:4px;min-height:44px}
.price-amount{font-size:36px;font-weight:700;color:var(--ink);line-height:1.2;margin-top:8px}
.price-amount .unit{font-size:14px;font-weight:400;color:var(--muted);margin-left:4px}
.price-list{margin:22px 0 26px;display:flex;flex-direction:column;gap:11px}
.price-list li{display:flex;gap:10px;font-size:14px;color:var(--text);line-height:1.6}
.price-list li i{font-size:12px;margin-top:.35em;flex:0 0 14px;text-align:center;color:var(--brand)}
.price-list li.off{color:var(--muted)}
.price-list li.off i{color:#C9D3DE}
.price-card .btn-main,.price-card .btn-line{width:100%;margin-top:auto}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-line)}
.news-media{position:relative;aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.news-card:hover .news-media img{transform:scale(1.03)}
.news-badge{
  position:absolute;left:12px;top:12px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
  border:1px solid var(--brand-line);
}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1 1 auto}
.news-title{
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-title a{color:var(--ink)}
.news-title a:hover{color:var(--brand)}
.news-sum{
  margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--divider);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.news-time{font-size:13px;color:var(--muted)}
.news-foot .btn-text{font-size:13px}
.empty-card{
  grid-column:1 / -1;
  background:var(--bg);border-radius:var(--r-card);padding:48px;text-align:center;
  border:1px dashed var(--border);
}
.empty-card i{font-size:26px;color:#C9D3DE}
.empty-card p{margin-top:12px;font-size:15px;color:var(--muted)}
.empty-card .btn-line{margin-top:20px}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.faq-left{position:sticky;top:32px}
.faq-left h2{font-size:32px;font-weight:700;color:var(--ink);line-height:1.35}
.faq-left p{margin-top:14px;font-size:15px;color:var(--text)}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px 24px;box-shadow:var(--shadow-card);transition:border-color var(--t)
}
.faq-item[open]{border-color:var(--brand-line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  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 .faq-ic{
  flex:0 0 22px;width:22px;height:22px;border-radius:6px;background:var(--brand-soft);
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:11px;transition:transform var(--t),background-color var(--t);
}
.faq-item[open] summary .faq-ic{transform:rotate(180deg);background:var(--brand);color:#fff}
.faq-item .faq-a{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text)}

/* ---------- 表单 / CTA ---------- */
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-left h2{font-size:32px;font-weight:700;color:var(--ink);line-height:1.35}
.contact-left .lead{margin-top:14px;font-size:16px;color:var(--text);max-width:32em}
.contact-list{margin-top:28px;display:flex;flex-direction:column;gap:16px}
.contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text)}
.contact-list i{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--brand-soft);
  color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:13px;
}
.contact-list strong{display:block;font-size:14px;color:var(--ink);font-weight:600}
.form-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px;box-shadow:0 2px 6px rgba(23,33,44,.05),0 20px 40px -26px rgba(23,33,44,.35);
}
.form-card h3{font-size:20px;font-weight:600;color:var(--ink)}
.form-card .form-tip{font-size:13px;color:var(--muted);margin-top:6px}
.field{margin-top:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:7px}
.form-control,.form-select{
  height:46px;background:#F7FAFD;border:1px solid var(--border);border-radius:var(--r-btn);
  font-size:15px;color:var(--ink);padding:0 14px;box-shadow:none;
  transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control::placeholder{color:var(--muted);font-size:14px}
.form-control:focus,.form-select:focus{
  background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(27,93,168,.14);color:var(--ink);
}
.form-card .btn-main{width:100%;margin-top:22px}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;text-align:center}

/* ---------- 页脚 ---------- */
.site-footer{background:#EEF3F9;border-top:1px solid var(--border);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.f-brand .f-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.f-logo .sb-logo{width:32px;height:32px;flex:0 0 32px;border-radius:9px;font-size:15px}
.f-logo strong{font-size:16px;color:var(--ink);font-weight:700}
.f-brand p{font-size:14px;color:var(--text);line-height:1.85;max-width:30em}
.f-contact{margin-top:16px;display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--muted)}
.f-col h4{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:14px}
.f-col a{display:block;font-size:14px;color:var(--text);line-height:1.6;padding:8px 0;transition:color var(--t)}
.f-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sidebar-w:216px}
  .wrap{padding:0 32px}
  .hero-title{font-size:40px}
  h2.sec-title,.faq-left h2,.contact-left h2{font-size:28px}
  .section{padding:72px 0}
}
@media (max-width:991.98px){
  .sidebar{transform:translateX(-100%);transition:transform var(--t);width:280px;box-shadow:0 0 40px rgba(23,33,44,.16)}
  .sidebar.open{transform:translateX(0)}
  .sb-link{min-height:48px}
  .shell{margin-left:0;padding-top:60px}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:60px;z-index:1041;
    background:#fff;border-bottom:1px solid var(--border);padding:0 20px;
  }
  .tb-brand{display:flex;align-items:center;gap:10px}
  .tb-brand .sb-logo{width:32px;height:32px;flex:0 0 32px;border-radius:9px;font-size:15px}
  .tb-brand strong{font-size:15px;color:var(--ink);font-weight:700}
  .tb-burger{
    width:44px;height:44px;border-radius:10px;border:1px solid var(--border);
    background:#fff;color:var(--brand);font-size:16px;display:flex;align-items:center;justify-content:center;
    transition:background-color var(--t),color var(--t);
  }
  .tb-burger:hover{background:var(--brand-soft)}
  .hero{padding-top:48px}
  .hero-title{font-size:34px}
  .hero-sub{max-width:none}
  .hero-visual{margin-top:8px}
  .stats{grid-template-columns:repeat(2,1fr);gap:24px 0}
  .stat{padding:0 20px}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .feature-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .scene-card,.scene-card:nth-child(even){grid-template-columns:1fr}
  .scene-card .scene-media{aspect-ratio:16/9}
  .case-main{grid-template-columns:1fr;padding:26px}
  .mini-cases{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .price-card.featured{order:-1}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-left{position:static}
  .contact-layout{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .section{padding:56px 0}
}
@media (max-width:767.98px){
  .wrap{padding:0 20px}
  body{font-size:15.5px}
  .hero-title{font-size:30px}
  h2.sec-title,.faq-left h2,.contact-left h2{font-size:24px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-main,.hero-actions .btn-line{width:100%}
  .stats{grid-template-columns:repeat(2,1fr);gap:20px 0}
  .stat-num{font-size:22px}
  .statusbar{padding:18px;gap:12px}
  .price-amount{font-size:32px}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .case-nums{gap:24px}
  .feature-card,.price-card,.form-card{padding:22px}
  .sec-head{margin-bottom:26px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bs-primary:#1B5DA8;
  --bs-border-radius:10px;
  --bs-body-color:#4A5A6B;
  --bs-body-bg:#F5F7FA;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",sans-serif;

  --brand:#1B5DA8;
  --brand-deep:#123F73;
  --brand-soft:#EDF4FC;
  --brand-line:#CFE0F2;
  --accent:#D97742;
  --accent-soft:#FBEEE5;
  --ink:#17212C;
  --body:#4A5A6B;
  --muted:#7C8B9A;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --border:#E4EAF1;
  --divider:#EEF2F6;
  --input-bg:#F7FAFD;

  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --r-pill:999px;

  --shadow-1:0 1px 2px rgba(23,33,44,.05), 0 10px 24px -14px rgba(23,33,44,.18);
  --shadow-2:0 2px 6px rgba(23,33,44,.06), 0 18px 36px -18px rgba(27,93,168,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --sidebar-w:248px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:600;letter-spacing:0;margin:0;}
p{margin:0 0 20px;}
a{color:var(--brand);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t);}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;}
ul,ol{margin:0;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,.btn:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
}
::selection{background:var(--brand-soft);color:var(--brand-deep);}

/* ---------- 左侧竖向导航 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;
  width:var(--sidebar-w);
  height:100vh;height:100dvh;
  background:var(--card);
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
  z-index:1040;
  transition:transform var(--t);
}
.sb-brand{
  display:flex;align-items:center;gap:12px;
  height:96px;flex:0 0 96px;
  padding:0 20px;
  border-bottom:1px solid var(--divider);
}
.sb-logo{
  width:36px;height:36px;flex:0 0 36px;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;line-height:1;
}
.sb-brand strong{display:block;font-size:16px;font-weight:700;color:var(--ink);line-height:1.3;}
.sb-brand small{display:block;font-size:12px;color:var(--muted);line-height:1.4;margin-top:3px;}
.sb-nav{
  flex:1 1 auto;
  padding:16px 12px;
  display:flex;flex-direction:column;gap:4px;
  overflow-y:auto;
}
.sb-nav a{
  position:relative;
  display:flex;align-items:center;
  height:44px;padding:0 20px;
  border-radius:var(--r-sm);
  font-size:15px;
  color:var(--body);
  transition:background-color var(--t),color var(--t);
}
.sb-nav a i{width:18px;margin-right:10px;font-size:13px;opacity:.72;}
.sb-nav a:hover{background:var(--brand-soft);color:var(--brand);}
.sb-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.sb-nav a.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.sb-foot{
  flex:0 0 auto;
  padding:16px;
  border-top:1px solid var(--divider);
}
.sb-card{background:var(--brand-soft);border-radius:var(--r-md);padding:16px;}
.sb-card .tel{font-size:15px;font-weight:700;color:var(--brand-deep);line-height:1.4;}
.sb-card p{font-size:12px;color:var(--muted);margin:4px 0 12px;line-height:1.6;}
.sb-copy{font-size:12px;color:var(--muted);margin-top:12px;text-align:center;line-height:1.6;}
.sb-mask{
  position:fixed;inset:0;
  background:rgba(23,33,44,.45);
  z-index:1035;
  opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
}
.sb-mask.show{opacity:1;visibility:visible;}

/* ---------- 移动端顶部条 ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;
  height:60px;
  background:var(--card);
  border-bottom:1px solid var(--border);
  align-items:center;justify-content:space-between;
  padding:0 20px;
  z-index:1030;
}
.tb-brand{display:flex;align-items:center;gap:10px;}
.tb-brand .sb-logo{width:32px;height:32px;flex:0 0 32px;font-size:15px;border-radius:9px;}
.tb-brand strong{font-size:15px;font-weight:700;color:var(--ink);}
.tb-burger{
  width:44px;height:44px;
  border:1px solid var(--border);
  background:var(--card);
  border-radius:var(--r-sm);
  color:var(--brand);
  font-size:18px;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:background-color var(--t),border-color var(--t);
}
.tb-burger:hover{background:var(--brand-soft);border-color:var(--brand-line);}

/* ---------- 版心 ---------- */
.app{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.wrap{
  width:100%;
  max-width:1160px;
  margin:0 auto;
  padding:0 48px;
}
.main{flex:1 1 auto;padding-bottom:24px;}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  text-align:center;
  transition:background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--card);color:var(--brand);border-color:var(--brand-line);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand-line);}
.btn-block{width:100%;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}

/* ---------- 标签 ---------- */
.tag-brand{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:12px;font-weight:600;
  line-height:1;
}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:28px 0 0;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C9D3DE;}
.crumb .current{color:var(--brand);font-weight:600;}

/* ---------- 文章头部 ---------- */
.article-head{padding:32px 0 0;max-width:840px;}
.article-head h1{
  font-size:36px;
  line-height:1.32;
  font-weight:700;
  color:var(--ink);
  margin:16px 0 18px;
  word-break:break-word;
}
.meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;
  font-size:13px;color:var(--muted);
  padding-bottom:22px;
  border-bottom:1px solid var(--divider);
}
.meta span{display:inline-flex;align-items:center;gap:6px;}
.meta i{font-size:12px;color:#A9B6C3;}

/* ---------- 封面 ---------- */
.cover{
  border-radius:var(--r-lg);
  overflow:hidden;
  aspect-ratio:21/9;
  background:var(--brand-soft);
  margin:32px 0 40px;
  box-shadow:var(--shadow-1);
}
.cover img{width:100%;height:100%;object-fit:cover;}

/* ---------- 正文 ---------- */
.article-body{
  max-width:760px;
  word-break:break-word;
}
.article-body p{
  font-size:16px;
  line-height:1.9;
  color:var(--body);
  margin:0 0 20px;
}
.article-body h2{
  position:relative;
  font-size:24px;
  font-weight:600;
  color:var(--ink);
  line-height:1.5;
  margin:40px 0 16px;
  padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.34em;bottom:.34em;width:4px;
  border-radius:2px;background:var(--brand);
}
.article-body h3{
  font-size:19px;
  font-weight:600;
  color:var(--ink);
  line-height:1.6;
  margin:28px 0 12px;
}
.article-body h4{
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  line-height:1.6;
  margin:24px 0 10px;
}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 20px;}
.article-body li{margin-bottom:8px;line-height:1.9;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-weight:600;}
.article-body blockquote{
  margin:24px 0;
  padding:20px 24px;
  background:#F5F8FC;
  border-left:4px solid var(--brand);
  border-radius:var(--r-md);
  font-size:15px;
  line-height:1.85;
  color:var(--body);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:24px 0;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%;
  max-width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
  overflow:hidden;
  border-radius:var(--r-md);
  box-shadow:0 0 0 1px var(--divider);
}
.article-body thead th{
  background:var(--brand-soft);
  color:var(--ink);
  font-weight:600;
  text-align:left;
  padding:12px 16px;
  border-bottom:1px solid var(--border);
  white-space:nowrap;
}
.article-body tbody td{
  padding:12px 16px;
  border-bottom:1px solid var(--divider);
  color:var(--body);
}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body a{border-bottom:1px solid var(--brand-line);}
.article-body a:hover{border-bottom-color:var(--brand);}
.article-body strong{color:var(--ink);}

/* ---------- 相关推荐 ---------- */
.related{
  margin-top:56px;
  padding-top:40px;
  border-top:1px solid var(--divider);
}
.related-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;}
.related-head h2{font-size:24px;font-weight:600;color:var(--ink);line-height:1.4;}
.related-head p{font-size:14px;color:var(--muted);margin:6px 0 0;}
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:28px;
}
.post-card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.post-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--brand-line);}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.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:18px 20px 20px;display:flex;flex-direction:column;flex:1 1 auto;}
.post-body h3{
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.55;
  margin:10px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body p{
  font-size:14px;color:var(--muted);line-height:1.75;margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--muted);
}
.post-foot .more{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.post-foot .more i{font-size:12px;transition:transform var(--t);}
.post-card:hover .post-foot .more i{transform:translateX(2px);}

/* ---------- 返回区 ---------- */
.back-row{
  margin-top:40px;
  padding-top:32px;
  border-top:1px solid var(--divider);
  display:flex;flex-wrap:wrap;gap:12px;
}

/* ---------- 空态 ---------- */
.empty-state{
  margin:48px 0 24px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:64px 32px;
  text-align:center;
  box-shadow:var(--shadow-1);
}
.empty-state i{font-size:36px;color:#B9C7D6;display:block;margin-bottom:18px;}
.empty-state h1{font-size:26px;font-weight:700;color:var(--ink);margin-bottom:12px;}
.empty-state p{font-size:15px;color:var(--muted);max-width:34em;margin:0 auto 26px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#EEF3F9;
  border-top:1px solid var(--border);
  margin-top:80px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:44px;
  padding:56px 0 40px;
}
.f-brand .f-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.f-brand .f-logo strong{font-size:16px;font-weight:700;color:var(--ink);}
.f-brand p{font-size:14px;line-height:1.85;color:var(--body);margin:0 0 16px;max-width:34em;}
.f-contact{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted);}
.f-col h4{font-size:15px;font-weight:600;color:var(--ink);margin:0 0 14px;}
.f-col a{
  display:block;
  font-size:14px;
  color:var(--body);
  line-height:40px;
  transition:color var(--t);
}
.f-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:18px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sidebar-w:216px;}
  .wrap{padding:0 32px;}
  .article-head h1{font-size:32px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:36px;}
  .f-brand{grid-column:1 / -1;}
}

@media (max-width:991.98px){
  .app{margin-left:0;padding-top:60px;}
  .topbar{display:flex;}
  .sidebar{
    width:280px;
    transform:translateX(-100%);
    box-shadow:0 24px 48px -24px rgba(23,33,44,.35);
  }
  .sidebar.open{transform:translateX(0);}
  .sb-nav a{height:48px;}
  .wrap{padding:0 32px;}
  .article-head h1{font-size:28px;}
  .cover{aspect-ratio:16/9;margin:26px 0 32px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .f-brand{grid-column:1 / -1;}
}

@media (max-width:767.98px){
  .wrap{padding:0 20px;}
  .crumb{padding-top:20px;}
  .article-head{padding-top:24px;}
  .article-head h1{font-size:26px;line-height:1.36;}
  .meta{font-size:12.5px;gap:6px 16px;padding-bottom:18px;}
  .cover{aspect-ratio:4/3;margin:22px 0 28px;border-radius:14px;}
  .article-body p{font-size:15.5px;line-height:1.9;}
  .article-body h2{font-size:21px;margin:32px 0 14px;}
  .article-body h3{font-size:18px;margin:24px 0 10px;}
  .article-body blockquote{padding:16px 18px;font-size:15px;}
  .article-body table{font-size:14px;}
  .article-body thead th,.article-body tbody td{padding:10px 12px;}
  .related{margin-top:44px;padding-top:32px;}
  .related-head h2{font-size:21px;}
  .rel-grid{grid-template-columns:1fr;gap:18px;}
  .back-row .btn{width:100%;}
  .empty-state{padding:48px 22px;}
  .empty-state h1{font-size:22px;}
  .site-footer{margin-top:56px;}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 28px;gap:26px;}
  .f-col a{line-height:44px;}
  .footer-bottom{flex-direction:column;gap:8px;padding-bottom:24px;}
}

@media (max-width:520px){
  .article-head h1{font-size:24px;}
  .btn{height:46px;}
  .post-body{padding:16px 18px 18px;}
}

/* roulang page: category1 */
:root{
  --brand:#1B5DA8;
  --brand-dark:#123F73;
  --brand-soft:#EDF4FC;
  --brand-line:#CFE0F2;
  --accent:#D97742;
  --accent-soft:#FBEEE5;
  --ink:#17212C;
  --text:#4A5A6B;
  --muted:#7C8B9A;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --line:#E4EAF1;
  --divider:#EEF2F6;
  --r-btn:10px;
  --r-card:16px;
  --r-lg:20px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(23,33,44,.05), 0 10px 24px -14px rgba(23,33,44,.18);
  --sh-2:0 2px 6px rgba(23,33,44,.06), 0 18px 36px -18px rgba(27,93,168,.28);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --fs-h1:34px;
  --fs-h2:30px;
  --fs-h3:20px;
  --fs-body:16px;
  --sidebar-w:248px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",sans-serif;
  font-size:var(--fs-body);
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--brand);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t);}
a:hover{color:var(--brand-dark);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-soft);color:var(--brand-dark);}

/* ---------- 布局骨架 ---------- */
.sidebar{
  position:fixed;left:0;top:0;width:var(--sidebar-w);height:100vh;
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1050;
}
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 48px;}

/* ---------- 侧栏品牌 ---------- */
.sb-brand{display:flex;align-items:center;gap:12px;height:96px;padding:0 20px;flex:0 0 auto;}
.sb-logo{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;background:var(--brand);
  color:#fff;font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.sb-brand-txt{display:flex;flex-direction:column;line-height:1.35;min-width:0;}
.sb-brand-txt strong{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;}
.sb-brand-txt span{font-size:12px;color:var(--muted);}

/* ---------- 侧栏菜单 ---------- */
.sb-nav{flex:1 1 auto;overflow-y:auto;padding:8px 12px 12px;display:flex;flex-direction:column;gap:4px;}
.sb-link{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 20px;
  font-size:15px;color:var(--text);border-radius:10px;
  transition:background-color var(--t),color var(--t);
}
.sb-link i{width:16px;font-size:14px;color:var(--muted);transition:color var(--t);}
.sb-link:hover{background:var(--brand-soft);color:var(--brand);}
.sb-link:hover i{color:var(--brand);}
.sb-link.active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;}
.sb-link.active i{color:var(--brand-dark);}
.sb-link.active::before{
  content:"";position:absolute;left:6px;top:10px;bottom:10px;width:3px;border-radius:2px;background:var(--brand);
}
.sb-foot{flex:0 0 auto;padding:0 16px 16px;border-top:1px solid var(--divider);}
.sb-card{
  background:var(--brand-soft);border-radius:12px;padding:16px;margin-top:16px;
  display:flex;flex-direction:column;gap:4px;
}
.sb-card-label{font-size:12px;color:var(--brand-dark);letter-spacing:.04em;}
.sb-card strong{font-size:16px;color:var(--brand-dark);font-weight:700;letter-spacing:.02em;}
.sb-card .btn{margin-top:10px;height:38px;font-size:14px;padding:0 16px;width:100%;}
.sb-copy{font-size:12px;color:var(--muted);margin-top:12px;text-align:center;}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;background:#fff;
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 20px;z-index:1030;
}
.tb-brand{display:flex;align-items:center;gap:10px;}
.tb-brand .sb-logo{width:30px;height:30px;flex:0 0 30px;border-radius:9px;font-size:14px;}
.tb-brand strong{font-size:15px;color:var(--ink);font-weight:700;}
.tb-burger{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;
  color:var(--ink);font-size:16px;display:flex;align-items:center;justify-content:center;
  transition:background-color var(--t),border-color var(--t);
}
.tb-burger:hover{background:var(--brand-soft);border-color:var(--brand-line);color:var(--brand);}
.nav-mask{
  position:fixed;inset:0;background:rgba(23,33,44,.45);z-index:1040;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color var(--t),border-color var(--t),color var(--t),box-shadow var(--t),transform var(--t);
}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;border-color:var(--brand-line);color:var(--brand);}
.btn-outline:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
}
.link-arrow i{font-size:12px;transition:transform var(--t);}
.link-arrow:hover i{transform:translateX(2px);}

/* ---------- 面页窄首屏 ---------- */
.page-hero{
  position:relative;background:var(--brand-soft);
  background-image:radial-gradient(circle,rgba(27,93,168,.08) 1px,transparent 1px);
  background-size:18px 18px;
  border-bottom:1px solid var(--line);
  padding:34px 0 36px;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-80px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(27,93,168,.10),rgba(27,93,168,0) 70%);
  pointer-events:none;
}
.crumb{font-size:13px;color:var(--muted);margin-bottom:14px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C9D3DE;}
.crumb .cur{color:var(--brand);font-weight:600;}
.page-hero h1{
  font-size:var(--fs-h1);font-weight:700;color:var(--ink);line-height:1.3;letter-spacing:0;
  max-width:22em;
}
.page-hero h1 .hl{color:var(--brand);}
.page-hero .hero-sub{
  margin-top:14px;font-size:15.5px;color:var(--text);max-width:760px;line-height:1.8;
}
.hero-actions{margin-top:22px;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0 0;}
.section:last-of-type{padding-bottom:72px;}
.sec-head{max-width:760px;margin-bottom:32px;}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.sec-head h2{font-size:var(--fs-h2);font-weight:700;color:var(--ink);line-height:1.35;}
.sec-head p{margin-top:12px;font-size:15.5px;color:var(--text);}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.sec-head-row .sec-head{margin-bottom:0;}

/* ---------- 指标条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);margin-top:-26px;position:relative;z-index:2;overflow:hidden;
}
.stat-item{padding:22px 26px;border-right:1px solid var(--divider);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;letter-spacing:.01em;}
.stat-num small{font-size:13px;font-weight:600;color:var(--muted);margin-left:4px;}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px;line-height:1.6;}

/* ---------- 功能矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.module-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  display:flex;flex-direction:column;
}
.module-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-line);}
.mc-top{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px;}
.mc-idx{font-size:12px;font-weight:700;color:var(--brand);letter-spacing:.1em;}
.mc-icon{
  width:40px;height:40px;border-radius:10px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:17px;flex:0 0 40px;
}
.module-card h3{font-size:var(--fs-h3);font-weight:600;color:var(--ink);line-height:1.45;}
.module-card .mc-desc{margin-top:10px;font-size:15px;color:var(--text);line-height:1.8;}
.spec-list{margin-top:18px;border-top:1px solid var(--divider);}
.spec-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:9px 0;font-size:14px;border-bottom:1px solid var(--divider);
}
.spec-list li:last-child{border-bottom:0;padding-bottom:0;}
.spec-list .k{color:var(--muted);flex:0 0 auto;}
.spec-list .v{color:var(--ink);font-weight:600;text-align:right;}

/* ---------- 深色状态面板 ---------- */
.status-panel{
  background:var(--ink);border-radius:var(--r-lg);padding:32px 36px;color:#fff;
  box-shadow:0 18px 40px -28px rgba(23,33,44,.6);
}
.sp-head{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.12);}
.sp-title{font-size:19px;font-weight:600;color:#fff;display:flex;align-items:center;gap:10px;}
.dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(217,119,66,.18);flex:0 0 8px;}
.sp-badge{
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
  background:rgba(255,255,255,.10);color:#DCE7F4;letter-spacing:.04em;
}
.sp-note{font-size:13.5px;color:rgba(255,255,255,.66);margin-top:6px;}
.sp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:22px;}
.sp-item{padding:0 24px;border-right:1px solid rgba(255,255,255,.12);}
.sp-item:first-child{padding-left:0;}
.sp-item:last-child{border-right:0;padding-right:0;}
.sp-num{font-size:24px;font-weight:700;color:#fff;line-height:1.25;}
.sp-num em{font-style:normal;font-size:13px;color:rgba(255,255,255,.6);margin-left:4px;font-weight:600;}
.sp-label{font-size:13px;color:rgba(255,255,255,.62);margin-top:4px;}
.sp-item .accent{color:var(--accent);}

/* ---------- 接入节奏 ---------- */
.flow-block{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start;}
.flow-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);background:var(--brand-soft);}
.flow-media img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;}
.flow-list{margin-top:4px;}
.flow-list li{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--divider);}
.flow-list li:last-child{border-bottom:0;padding-bottom:0;}
.flow-num{
  width:30px;height:30px;flex:0 0 30px;border-radius:50%;background:var(--brand-soft);
  color:var(--brand-dark);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.flow-list h4{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;}
.flow-list p{font-size:14.5px;color:var(--text);margin-top:4px;line-height:1.75;}

/* ---------- 组合建议 ---------- */
.combo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.combo-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;
  box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.combo-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-line);}
.combo-card h3{font-size:18px;font-weight:600;color:var(--ink);}
.combo-card p{margin-top:10px;font-size:14.5px;color:var(--text);line-height:1.8;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  font-size:12px;font-weight:600;color:var(--brand-dark);background:var(--brand-soft);
  border:1px solid var(--brand-line);border-radius:999px;padding:3px 10px;line-height:1.6;
}
.tag-accent{background:var(--accent-soft);border-color:#F3DACB;color:#B25E2F;}

/* ---------- 引导条 ---------- */
.next-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:var(--r-card);
  padding:24px 32px;
}
.next-bar .nb-text strong{display:block;font-size:17px;font-weight:600;color:var(--brand-dark);}
.next-bar .nb-text span{display:block;font-size:14px;color:var(--text);margin-top:4px;}
.next-bar .nb-link{
  display:inline-flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--brand);
}
.next-bar .nb-link i{font-size:13px;transition:transform var(--t);}
.next-bar .nb-link:hover i{transform:translateX(4px);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:36px 40px;box-shadow:var(--sh-1);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:24px;font-weight:700;color:var(--ink);line-height:1.4;}
.cta-band p{margin-top:8px;font-size:15px;color:var(--text);max-width:44em;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:72px;background:#EEF3F9;border-top:1px solid var(--line);
  padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.f-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.f-logo .sb-logo{width:32px;height:32px;flex:0 0 32px;border-radius:9px;font-size:14px;}
.f-logo strong{font-size:16px;font-weight:700;color:var(--ink);}
.f-brand p{font-size:14px;color:var(--text);line-height:1.85;max-width:34em;}
.f-contact{display:flex;flex-direction:column;gap:2px;margin-top:16px;}
.f-contact span{font-size:13.5px;color:var(--muted);line-height:1.9;}
.f-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px;letter-spacing:.02em;}
.f-col a{display:block;font-size:14px;color:var(--text);line-height:1.9;padding:3px 0;transition:color var(--t);}
.f-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:40px;border-top:1px solid #DCE5EF;padding:18px 0 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom span{font-size:13px;color:var(--muted);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .sidebar{width:216px;}
  .main{margin-left:216px;}
  .wrap{padding:0 32px;}
  .sp-grid{grid-template-columns:repeat(2,1fr);gap:24px 0;}
  .sp-item{padding:0 20px;}
  .sp-item:nth-child(2n){border-right:0;}
}
@media (max-width:991px){
  :root{--fs-h1:28px;--fs-h2:24px;--fs-h3:19px;}
  .topbar{display:flex;}
  .sidebar{width:280px;transform:translateX(-100%);transition:transform var(--t);box-shadow:none;}
  .sidebar.is-open{transform:translateX(0);box-shadow:0 24px 48px -24px rgba(23,33,44,.45);}
  .sb-link{height:48px;}
  .main{margin-left:0;padding-top:60px;}
  .wrap{padding:0 24px;}
  .page-hero{padding:28px 0 30px;}
  .section{padding:56px 0 0;}
  .section:last-of-type{padding-bottom:56px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);margin-top:20px;}
  .stat-item{border-right:1px solid var(--divider);border-bottom:1px solid var(--divider);}
  .stat-item:nth-child(2n){border-right:0;}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:0;}
  .matrix{grid-template-columns:1fr;}
  .flow-block{grid-template-columns:1fr;gap:28px;}
  .combo-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .f-brand{grid-column:1 / -1;}
  .cta-band{padding:28px;flex-direction:column;align-items:flex-start;}
  .next-bar{padding:22px 24px;}
}
@media (max-width:767px){
  :root{--fs-h1:26px;--fs-h2:22px;--fs-body:15.5px;}
  .wrap{padding:0 20px;}
  .page-hero .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .section{padding:48px 0 0;}
  .section:last-of-type{padding-bottom:48px;}
  .module-card{padding:22px;}
  .status-panel{padding:24px;}
  .sp-grid{grid-template-columns:1fr;gap:18px;}
  .sp-item{padding:0;border-right:0;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:14px;}
  .sp-item:last-child{border-bottom:0;padding-bottom:0;}
  .footer-grid{grid-template-columns:1fr;}
  .f-col a{line-height:1.9;padding:8px 0;min-height:40px;display:flex;align-items:center;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .next-bar .nb-link{font-size:14px;}
  .sb-copy{text-align:left;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category2 */
:root{
  --brand:#1B5DA8;
  --brand-dark:#123F73;
  --brand-soft:#EDF4FC;
  --brand-line:#CFE0F2;
  --accent:#D97742;
  --accent-soft:#FBEEE5;
  --ink:#17212C;
  --text:#4A5A6B;
  --muted:#7C8B9A;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --border:#E4EAF1;
  --divider:#EEF2F6;
  --r-btn:10px;
  --r-card:16px;
  --r-lg:20px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(23,33,44,.05),0 10px 24px -14px rgba(23,33,44,.18);
  --shadow-2:0 2px 6px rgba(23,33,44,.06),0 18px 36px -18px rgba(27,93,168,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:248px;
  --bs-primary:#1B5DA8;
  --bs-body-color:#4A5A6B;
  --bs-body-bg:#F5F7FA;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{color:var(--ink);letter-spacing:0;font-weight:600;margin:0;}
p{margin:0;}
a{color:var(--brand);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{color:var(--brand-dark);}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:var(--brand-soft);color:var(--brand-dark);}

/* ---------- layout ---------- */
.page{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.page main{flex:1;}
.wrap{max-width:1160px;margin:0 auto;padding:0 48px;width:100%;}
.section{padding:88px 0;}
.section.compact{padding:56px 0;}
.section.tight{padding:64px 0;}
.band{background:#fff;border-top:1px solid var(--divider);border-bottom:1px solid var(--divider);}

/* ---------- sidebar ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  padding:0 16px 18px;z-index:1040;overflow-y:auto;
}
.sb-brand{height:96px;display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.sb-logo{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;background:var(--brand);
  color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.sb-brand-txt{display:flex;flex-direction:column;line-height:1.35;min-width:0;}
.sb-brand-txt strong{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;}
.sb-brand-txt span{font-size:12px;color:var(--muted);}
.sb-nav{display:flex;flex-direction:column;gap:4px;margin-top:6px;}
.sb-nav a{
  position:relative;height:44px;display:flex;align-items:center;
  padding:0 20px;border-radius:10px;font-size:15px;color:var(--text);
  transition:background-color 180ms var(--ease),color 180ms var(--ease);
}
.sb-nav a:hover{background:var(--brand-soft);color:var(--brand);}
.sb-nav a.active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;}
.sb-nav a.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--brand);
}
.sb-foot{margin-top:auto;padding-top:20px;}
.sb-card{background:var(--brand-soft);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:6px;}
.sb-card .lbl{font-size:12px;color:var(--muted);}
.sb-card strong{font-size:15px;color:var(--brand-dark);font-weight:700;}
.sb-card .btn-ghost{height:38px;font-size:13.5px;margin-top:4px;padding:0 14px;}
.sb-copy{font-size:12px;color:var(--muted);margin-top:14px;padding-top:12px;border-top:1px solid var(--divider);}

/* ---------- topbar (mobile) ---------- */
.topbar{display:none;}
.sb-overlay{display:none;}

/* ---------- buttons ---------- */
.btn-solid,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;text-decoration:none;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn-solid{background:var(--brand);color:#fff;}
.btn-solid:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-ghost{background:#fff;border-color:var(--brand-line);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn-line{background:transparent;border-color:var(--border);color:var(--text);}
.btn-line:hover{background:#fff;border-color:var(--brand-line);color:var(--brand);}
.btn-solid:active,.btn-ghost:active,.btn-line:active{transform:translateY(0);}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:56px 0 60px;
  background:
    radial-gradient(circle at 1px 1px, rgba(27,93,168,.07) 1px, transparent 0) 0 0/22px 22px,
    linear-gradient(180deg,#EDF4FC 0%,#F5F7FA 100%);
  border-bottom:1px solid var(--border);
}
.hero-inner{max-width:780px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.02em;color:var(--brand);
  background:#fff;border:1px solid var(--brand-line);border-radius:999px;padding:4px 12px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.hero h1{
  font-size:44px;line-height:1.25;font-weight:700;margin:18px 0 0;color:var(--ink);
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero .lead{font-size:16px;line-height:1.85;color:var(--text);max-width:36em;margin-top:18px;}
.hero .lead + .lead{margin-top:8px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

/* ---------- stat bar ---------- */
.statbar{background:#fff;border-bottom:1px solid var(--border);padding:28px 0;}
.stat-grid{display:flex;align-items:flex-start;}
.stat{flex:1;padding:0 24px;border-left:1px solid var(--border);min-width:0;}
.stat:first-child{border-left:0;padding-left:0;}
.stat:last-child{padding-right:0;}
.stat strong{display:block;font-size:26px;line-height:1.3;font-weight:700;color:var(--brand);}
.stat span{display:block;font-size:13px;color:var(--muted);margin-top:2px;}
.stat-note{font-size:12.5px;color:var(--muted);margin-top:16px;}

/* ---------- section head ---------- */
.sec-head{max-width:720px;margin-bottom:40px;}
.sec-head h2{font-size:32px;line-height:1.35;font-weight:700;margin-top:14px;}
.sec-head p{font-size:15.5px;color:var(--text);margin-top:12px;}

/* ---------- split rows ---------- */
.split-row{
  display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;
  padding:36px 0;border-top:1px solid var(--divider);
}
.split-row:first-of-type{border-top:0;padding-top:0;}
.split-row.reverse{grid-template-columns:7fr 5fr;}
.split-row.reverse .split-media{order:2;}
.split-row.reverse .split-body{order:1;}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--shadow-1);background:var(--brand-soft);
}
.tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:4px 10px;
}
.split-body h3{font-size:22px;line-height:1.45;font-weight:600;margin-top:14px;}
.split-body p{font-size:15.5px;line-height:1.85;color:var(--text);margin-top:12px;}
.result-list{display:flex;flex-wrap:wrap;gap:32px;margin-top:24px;padding-top:20px;border-top:1px solid var(--divider);}
.result-list li{display:flex;flex-direction:column;gap:2px;}
.result-list strong{font-size:24px;font-weight:700;color:var(--brand);line-height:1.25;}
.result-list span{font-size:13px;color:var(--muted);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px;}
.step{position:relative;padding-right:8px;}
.step .num{
  position:relative;z-index:2;width:26px;height:26px;border-radius:50%;
  background:var(--brand);color:#fff;font-size:12.5px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.step::after{
  content:"";position:absolute;top:13px;left:26px;right:0;height:1px;background:var(--brand-line);z-index:1;
}
.step:last-child::after{display:none;}
.step h4{font-size:16px;font-weight:600;margin-top:14px;}
.step p{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.8;}

/* ---------- dark panel ---------- */
.panel-dark{
  background:var(--ink);border-radius:var(--r-lg);padding:40px;
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;
  box-shadow:0 20px 44px -26px rgba(23,33,44,.55);
}
.panel-dark h2{color:#fff;font-size:26px;line-height:1.4;font-weight:700;}
.panel-dark .pd-sub{color:#9FB0C2;font-size:14.5px;margin-top:12px;line-height:1.85;}
.pd-list{display:flex;flex-direction:column;gap:18px;}
.pd-item{display:flex;gap:12px;}
.pd-item .mark{
  flex:0 0 8px;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:11px;
}
.pd-item h4{color:#fff;font-size:15px;font-weight:600;}
.pd-item p{color:#9FB0C2;font-size:14px;line-height:1.8;margin-top:4px;}
.state-bar{
  grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:20px;margin-top:4px;
  font-size:13px;color:#9FB0C2;
}
.state-bar .pill{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:4px 12px;color:#DCE5EE;
}
.state-bar .pill i{color:var(--accent);font-size:7px;}

/* ---------- case ---------- */
.case-main{
  background:#fff;border:1px solid var(--border);border-left:4px solid var(--brand);
  border-radius:var(--r-lg);padding:36px;box-shadow:var(--shadow-1);
  display:grid;grid-template-columns:5fr 7fr;gap:36px;align-items:center;
}
.case-main img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);background:var(--brand-soft);}
.case-quote{font-size:18px;line-height:1.9;color:var(--ink);}
.case-sign{font-size:14px;color:var(--muted);margin-top:16px;}
.case-nums{display:flex;flex-wrap:wrap;gap:36px;margin-top:22px;padding-top:20px;border-top:1px solid var(--divider);}
.case-nums li{display:flex;flex-direction:column;}
.case-nums strong{font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;}
.case-nums span{font-size:13px;color:var(--muted);}
.case-sub{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px;}
.case-mini{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:22px;
  display:flex;gap:16px;align-items:flex-start;box-shadow:var(--shadow-1);
  transition:box-shadow 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease);
}
.case-mini:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--brand-line);}
.case-mini .ico{
  flex:0 0 48px;width:48px;height:48px;border-radius:12px;background:var(--brand-soft);
  color:var(--brand);font-size:18px;display:flex;align-items:center;justify-content:center;
}
.case-mini h4{font-size:16px;font-weight:600;}
.case-mini p{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.8;}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-left{position:sticky;top:32px;}
.faq-left h2{font-size:30px;line-height:1.4;font-weight:700;margin-top:14px;}
.faq-left p{font-size:15px;color:var(--text);margin-top:12px;}
.faq-left .btn-ghost{margin-top:22px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.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);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;font-weight:400;color:var(--brand);line-height:1;
  transition:transform 180ms var(--ease);
}
.faq-item[open]{border-color:var(--brand-line);box-shadow:var(--shadow-1);}
.faq-item[open] summary::after{content:"−";}
.faq-item[open] summary{border-bottom:1px solid var(--divider);}
.faq-body{padding:18px 24px 22px;font-size:15px;line-height:1.85;color:var(--text);}

/* ---------- cta / form ---------- */
.cta-layout{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:start;}
.cta-left h2{font-size:32px;line-height:1.35;font-weight:700;}
.cta-left > p{font-size:15.5px;margin-top:16px;max-width:32em;}
.contact-list{display:flex;flex-direction:column;gap:14px;margin-top:28px;}
.contact-list li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--text);}
.contact-list i{color:var(--brand);font-size:15px;margin-top:6px;width:16px;text-align:center;}
.form-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--shadow-1);
}
.form-card h3{font-size:18px;font-weight:600;}
.form-card .hint{font-size:13px;color:var(--muted);margin-top:6px;}
.field{margin-top:18px;}
.field-label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.form-control{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-btn);
  background:#F7FAFD;border:1px solid var(--border);
  font-size:15px;color:var(--ink);font-family:inherit;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background-color 180ms var(--ease);
  appearance:none;
}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;line-height:1.8;resize:vertical;}
.form-control::placeholder{color:var(--muted);}
.form-control:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(27,93,168,.14);
}
.form-card .btn-solid{width:100%;margin-top:22px;}
.form-note{font-size:12.5px;color:var(--muted);margin-top:12px;text-align:center;}

/* ---------- footer ---------- */
.site-footer{background:#EEF3F9;border-top:1px solid var(--border);padding:64px 0 0;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;}
.f-logo{display:flex;align-items:center;gap:10px;}
.f-logo strong{font-size:16px;color:var(--ink);font-weight:700;}
.f-brand p{font-size:14px;line-height:1.9;color:var(--text);margin-top:16px;max-width:34em;}
.f-contact{display:flex;flex-direction:column;gap:6px;margin-top:16px;font-size:13.5px;color:var(--muted);}
.f-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:12px;}
.f-col a{
  display:block;font-size:14px;color:var(--text);line-height:40px;
  transition:color 180ms var(--ease),padding-left 180ms var(--ease);
}
.f-col a:hover{color:var(--brand);padding-left:4px;}
.footer-bottom{
  border-top:1px solid #DDE6F0;padding:18px 0 22px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--muted);
}

/* ---------- responsive ---------- */
@media (min-width:992px) and (max-width:1199.98px){
  :root{--sidebar-w:216px;}
  .wrap{padding:0 32px;}
  .hero h1{font-size:38px;}
  .section{padding:72px 0;}
  .split-row,.split-row.reverse{gap:32px;}
  .case-main{gap:28px;padding:28px;}
  .panel-dark{padding:32px;gap:28px;}
  .cta-layout,.faq-layout{gap:32px;}
}
@media (max-width:991.98px){
  .topbar{
    display:flex;position:fixed;top:0;left:0;right:0;height:60px;z-index:1050;
    background:#fff;border-bottom:1px solid var(--border);
    align-items:center;justify-content:space-between;padding:0 20px;
  }
  .tb-brand{display:flex;align-items:center;gap:10px;min-width:0;}
  .tb-brand strong{font-size:15px;font-weight:700;color:var(--ink);white-space:nowrap;}
  .tb-brand .sb-logo{width:32px;height:32px;flex:0 0 32px;font-size:16px;border-radius:9px;}
  .tb-burger{
    width:44px;height:44px;flex:0 0 44px;border-radius:10px;
    background:#fff;border:1px solid var(--border);color:var(--ink);font-size:17px;
    display:flex;align-items:center;justify-content:center;cursor:pointer;
    transition:background-color 180ms var(--ease),border-color 180ms var(--ease);
  }
  .tb-burger:hover{background:var(--brand-soft);border-color:var(--brand-line);color:var(--brand);}
  .sidebar{
    width:280px;transform:translateX(-100%);
    transition:transform 180ms var(--ease);
    box-shadow:0 0 40px rgba(23,33,44,.18);padding-top:10px;
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar .sb-brand{height:76px;}
  .sidebar .sb-nav a{height:48px;}
  .sb-overlay{position:fixed;inset:0;background:rgba(23,33,44,.45);z-index:1035;}
  .sb-overlay.show{display:block;}
  .page{margin-left:0;padding-top:60px;}
  .section{padding:64px 0;}
  .hero{padding:44px 0 48px;}
  .hero h1{font-size:32px;}
  .split-row,.split-row.reverse{grid-template-columns:1fr;gap:24px;}
  .split-row.reverse .split-media{order:0;}
  .split-row.reverse .split-body{order:0;}
  .steps{grid-template-columns:1fr 1fr;gap:28px 20px;}
  .step::after{display:none;}
  .panel-dark{grid-template-columns:1fr;gap:28px;padding:32px;}
  .case-main{grid-template-columns:1fr;gap:24px;padding:28px;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-left{position:static;}
  .cta-layout{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .sec-head h2{font-size:26px;}
}
@media (max-width:767.98px){
  .wrap{padding:0 20px;}
  .section{padding:56px 0;}
  .section.compact{padding:44px 0;}
  .hero{padding:36px 0 44px;}
  .hero h1{font-size:30px;}
  .hero .lead{font-size:15.5px;}
  .hero-actions .btn-solid,.hero-actions .btn-ghost{width:100%;}
  .statbar{padding:22px 0;}
  .stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 16px;}
  .stat{padding:0;border-left:0;}
  .stat strong{font-size:22px;}
  .sec-head h2{font-size:24px;}
  .split-body h3{font-size:19px;}
  .result-list{gap:22px;}
  .result-list strong{font-size:20px;}
  .steps{grid-template-columns:1fr;gap:22px;}
  .panel-dark{padding:24px;border-radius:16px;}
  .panel-dark h2{font-size:22px;}
  .case-main{padding:22px;border-radius:16px;}
  .case-quote{font-size:16.5px;}
  .case-nums{gap:24px;}
  .case-nums strong{font-size:22px;}
  .case-sub{grid-template-columns:1fr;}
  .faq-left h2{font-size:24px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-body{padding:16px 18px 18px;font-size:14.5px;}
  .cta-left h2{font-size:24px;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:22px;}
  .f-col a{line-height:44px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}

/* roulang page: category3 */
:root{
  --brand:#1B5DA8;
  --brand-deep:#123F73;
  --brand-tint:#EDF4FC;
  --brand-line:#CFE0F2;
  --accent:#D97742;
  --accent-tint:#FBEEE5;
  --ink:#17212C;
  --text:#4A5A6B;
  --muted:#7C8B9A;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --border:#E4EAF1;
  --divider:#EEF2F6;
  --field:#F7FAFD;
  --dot-2:#8FB4DC;
  --dot-3:#C9D3DE;
  --r-btn:10px;
  --r-card:16px;
  --r-lg:20px;
  --r-img:12px;
  --shadow-card:0 1px 2px rgba(23,33,44,.05), 0 10px 24px -14px rgba(23,33,44,.18);
  --shadow-hover:0 2px 6px rgba(23,33,44,.06), 0 18px 36px -18px rgba(27,93,168,.28);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --sidebar-w:248px;
  --bs-primary:#1B5DA8;
  --bs-border-radius:10px;
  --bs-body-color:#4A5A6B;
  --bs-body-bg:#F5F7FA;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-weight:600;color:var(--ink);letter-spacing:0;margin:0;}
p{margin:0 0 16px;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
}
::selection{background:var(--brand-tint);color:var(--brand-deep);}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--card);
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
  padding:0 16px 20px;
  z-index:1060;
  transition:transform var(--ease);
}
.sb-brand{height:96px;display:flex;align-items:center;gap:12px;padding:0 4px;flex:0 0 auto;}
.sb-logo{
  width:36px;height:36px;flex:0 0 auto;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;line-height:1;
}
.sb-name{min-width:0;}
.sb-name strong{display:block;font-size:16px;font-weight:700;color:var(--ink);line-height:1.4;}
.sb-name span{display:block;font-size:12px;color:var(--muted);line-height:1.5;}
.sb-nav{display:flex;flex-direction:column;gap:4px;padding-top:10px;border-top:1px solid var(--divider);}
.sb-link{
  position:relative;
  display:flex;align-items:center;
  height:44px;
  padding:0 20px;
  border-radius:10px;
  font-size:15px;
  color:var(--text);
  transition:background-color var(--ease),color var(--ease);
}
.sb-link:hover{background:var(--brand-tint);color:var(--brand);}
.sb-link.active{background:var(--brand-tint);color:var(--brand-deep);font-weight:600;}
.sb-link.active::before{
  content:"";
  position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:2px;background:var(--brand);
}
.sb-foot{margin-top:auto;padding-top:18px;}
.sb-card{
  background:var(--brand-tint);
  border-radius:12px;
  padding:16px;
  display:flex;flex-direction:column;gap:4px;
}
.sb-card-t{font-size:12px;color:var(--muted);}
.sb-card strong{font-size:17px;font-weight:700;color:var(--brand-deep);line-height:1.4;}
.sb-card-s{font-size:12px;color:var(--muted);margin-bottom:10px;}
.sb-copy{font-size:12px;color:var(--muted);margin:14px 4px 0;line-height:1.6;}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;
  height:60px;
  background:var(--card);
  border-bottom:1px solid var(--border);
  align-items:center;justify-content:space-between;
  padding:0 20px;
  z-index:1050;
}
.tb-brand{display:flex;align-items:center;gap:10px;min-width:0;}
.tb-brand .sb-logo{width:32px;height:32px;font-size:16px;border-radius:9px;}
.tb-brand strong{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;}
.tb-burger{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:10px;
  color:var(--ink);
  font-size:16px;
  cursor:pointer;
  transition:background-color var(--ease),border-color var(--ease);
}
.tb-burger:hover{background:var(--brand-tint);border-color:var(--brand-line);color:var(--brand);}
.overlay{
  display:none;
  position:fixed;inset:0;
  background:rgba(23,33,44,.45);
  z-index:1035;
}
.overlay.show{display:block;}

/* ============ 主内容 ============ */
.main{margin-left:var(--sidebar-w);}
.wrap{max-width:1160px;margin:0 auto;padding:0 48px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}

.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary-c{background:var(--brand);color:#fff;box-shadow:0 8px 18px -12px rgba(27,93,168,.7);}
.btn-primary-c:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:var(--card);border-color:var(--brand-line);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-tint);border-color:var(--brand-line);color:var(--brand-deep);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
  white-space:nowrap;
}
.btn-text i{font-size:12px;transition:transform var(--ease);}
.btn-text:hover{color:var(--brand-deep);}
.btn-text:hover i{transform:translateX(2px);}

/* ============ 页面窄首屏 ============ */
.page-hero{
  background-color:var(--brand-tint);
  background-image:radial-gradient(rgba(27,93,168,.07) 1px, transparent 1px);
  background-size:18px 18px;
  border-bottom:1px solid var(--brand-line);
  padding:44px 0 56px;
  min-height:260px;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C9D3DE;}
.crumb .cur{color:var(--brand);font-weight:600;}
.page-hero h1{
  font-size:34px;font-weight:700;line-height:1.32;color:var(--ink);
  max-width:22em;
  margin-bottom:14px;
}
.page-hero h1 .hl{color:var(--brand);}
.page-hero .lead{
  max-width:56em;
  font-size:16px;color:var(--text);
  margin-bottom:26px;
}

/* ============ 区块标题 ============ */
.eyebrow{
  display:inline-block;
  font-size:12px;font-weight:600;
  color:var(--brand);
  background:var(--brand-tint);
  border:1px solid var(--brand-line);
  padding:4px 12px;
  border-radius:999px;
  margin-bottom:14px;
}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{font-size:32px;line-height:1.3;margin-bottom:12px;}
.section-head p{font-size:15.5px;color:var(--text);margin:0;}

/* ============ 服务通道 + 侧栏 ============ */
.support-grid{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.service-list{display:flex;flex-direction:column;gap:16px;}
.service-row{
  display:flex;align-items:flex-start;gap:18px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.service-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-line);}
.srv-ico{
  width:48px;height:48px;flex:0 0 auto;
  border-radius:12px;
  background:var(--brand-tint);
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
}
.srv-body{flex:1 1 auto;min-width:0;}
.srv-body h3{font-size:18px;line-height:1.5;margin-bottom:8px;}
.srv-body p{font-size:15px;color:var(--text);margin:0;}
.srv-link{flex:0 0 auto;align-self:center;}

.side-sticky{
  position:sticky;top:24px;
  display:flex;flex-direction:column;gap:20px;
}
.side-title{
  font-size:13px;font-weight:600;color:var(--muted);
  letter-spacing:.04em;
  margin:0 0 10px;
}
.faq-group{display:flex;flex-direction:column;gap:10px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:var(--brand-line);box-shadow:var(--shadow-hover);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:18px 20px;
  font-size:15px;font-weight:600;color:var(--ink);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-ico{
  flex:0 0 auto;
  color:var(--brand);
  font-size:12px;
  transition:transform var(--ease);
}
.faq-item[open] .faq-ico{transform:rotate(180deg);}
.faq-body{padding:0 20px 18px;font-size:14.5px;color:var(--text);line-height:1.85;}

.side-cta{
  background:var(--brand-tint);
  border:1px solid var(--brand-line);
  border-radius:var(--r-card);
  padding:20px;
}
.side-cta-img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);
  margin-bottom:16px;
  background:var(--brand-tint);
}
.side-cta h3{font-size:17px;line-height:1.5;margin-bottom:8px;}
.side-cta p{font-size:14px;color:var(--text);margin:0 0 14px;}
.side-cta .phone{
  display:flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--brand-deep);
  margin-bottom:14px;
}
.side-cta .phone i{color:var(--accent);font-size:14px;}

/* ============ 响应等级面板 ============ */
.status-panel{
  background:var(--ink);
  border-radius:var(--r-lg);
  padding:40px;
  display:grid;
  grid-template-columns:minmax(0,320px) minmax(0,1fr);
  gap:40px;
  color:#fff;
}
.status-panel h2{color:#fff;font-size:26px;line-height:1.35;margin-bottom:14px;}
.status-panel .sp-lead{color:rgba(255,255,255,.72);font-size:14.5px;margin:0;}
.status-panel .sp-note{
  margin-top:18px;padding-top:16px;
  border-top:1px solid rgba(255,255,255,.12);
  color:rgba(255,255,255,.55);
  font-size:13px;line-height:1.8;
}
.status-list{display:flex;flex-direction:column;}
.status-item{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:14px;
  padding:18px 0;
  border-top:1px solid rgba(255,255,255,.12);
}
.status-item:first-child{border-top:none;padding-top:0;}
.dot{width:8px;height:8px;border-radius:50%;flex:0 0 auto;display:block;}
.dot-p1{background:var(--accent);box-shadow:0 0 0 4px rgba(217,119,66,.18);}
.dot-p2{background:var(--dot-2);}
.dot-p3{background:var(--dot-3);}
.status-main{display:flex;flex-direction:column;gap:2px;min-width:0;}
.status-name{font-size:15px;font-weight:600;color:#fff;line-height:1.5;}
.status-desc{font-size:13.5px;color:rgba(255,255,255,.6);line-height:1.7;}
.status-time{font-size:14px;font-weight:600;color:#fff;white-space:nowrap;}

/* ============ 联系表单 ============ */
.contact-block{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:36px;
  box-shadow:var(--shadow-card);
}
.contact-block h2{font-size:26px;line-height:1.35;margin-bottom:10px;}
.contact-block .cb-lead{font-size:15px;color:var(--text);margin-bottom:26px;max-width:52em;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;}
.field.full{grid-column:1/-1;}
.field label{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.form-control-c{
  width:100%;
  height:46px;
  background:var(--field);
  border:1px solid var(--border);
  border-radius:var(--r-btn);
  padding:0 14px;
  font-size:15px;
  color:var(--ink);
  font-family:inherit;
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
textarea.form-control-c{
  height:auto;min-height:124px;
  padding:12px 14px;
  line-height:1.8;
  resize:vertical;
}
.form-control-c::placeholder{color:var(--muted);}
.form-control-c:focus{
  outline:none;
  background:#fff;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(27,93,168,.14);
}
.form-actions{grid-column:1/-1;display:flex;flex-direction:column;gap:10px;margin-top:4px;}
.form-actions .btn-c{width:100%;}
.form-hint{font-size:12.5px;color:var(--muted);margin:0;}

/* ============ 页脚 ============ */
.site-footer{
  margin-left:var(--sidebar-w);
  background:#EEF3F9;
  border-top:1px solid var(--border);
  padding:56px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:36px;
}
.f-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.f-logo strong{font-size:16px;font-weight:700;color:var(--ink);}
.f-brand p{font-size:14px;color:var(--text);line-height:1.85;margin:0 0 16px;max-width:34em;}
.f-contact{display:flex;flex-direction:column;gap:4px;}
.f-contact span{font-size:13.5px;color:var(--muted);}
.f-col h4{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:12px;}
.f-col a{
  display:block;
  font-size:14px;
  color:var(--text);
  padding:6px 0;
  line-height:1.6;
}
.f-col a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:36px;padding-top:20px;
  border-top:1px solid #DFE7F0;
  font-size:13px;color:var(--muted);
}

/* ============ 断点 ============ */
@media (max-width:1199.98px){
  :root{--sidebar-w:216px;}
  .wrap{padding:0 32px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:28px;}
  .f-brand{grid-column:1/-1;}
}
@media (max-width:991.98px){
  .sidebar{
    width:280px;
    transform:translateX(-100%);
    box-shadow:0 18px 48px -20px rgba(23,33,44,.45);
    padding-top:4px;
  }
  .sidebar.open{transform:translateX(0);}
  .sb-link{height:48px;}
  .topbar{display:flex;}
  .main{margin-left:0;padding-top:60px;}
  .site-footer{margin-left:0;}
  .wrap{padding:0 32px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .page-hero{padding:36px 0 44px;min-height:0;}
  .page-hero h1{font-size:28px;}
  .section-head h2{font-size:26px;}
  .support-grid{grid-template-columns:1fr;gap:28px;}
  .side-sticky{position:static;}
  .status-panel{grid-template-columns:1fr;gap:26px;padding:32px;}
  .status-panel h2{font-size:23px;}
  .contact-block{padding:28px;}
  .contact-block h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .f-brand{grid-column:1/-1;}
}
@media (max-width:767.98px){
  .wrap{padding:0 20px;}
  body{font-size:15.5px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .page-hero h1{font-size:24px;}
  .page-hero .lead{font-size:15px;}
  .section-head h2{font-size:24px;}
  .service-row{flex-wrap:wrap;padding:20px;gap:14px;}
  .srv-ico{width:44px;height:44px;font-size:16px;}
  .srv-body h3{font-size:17px;}
  .srv-body p{font-size:14.5px;}
  .srv-link{width:100%;padding-top:4px;}
  .btn-c{width:100%;}
  .page-hero .btn-c{width:100%;}
  .status-panel{padding:24px;border-radius:16px;}
  .status-item{
    grid-template-columns:auto minmax(0,1fr);
    gap:10px 12px;
    padding:16px 0;
  }
  .status-time{grid-column:2;justify-self:start;font-size:13.5px;color:var(--dot-2);}
  .status-time.is-p1{color:var(--accent);}
  .form-grid{grid-template-columns:1fr;}
  .contact-block{padding:22px;}
  .faq-item summary{font-size:14.5px;padding:16px;}
  .faq-body{padding:0 16px 16px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr;gap:22px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}