:root{
  --brand:#0fc468;
  --brand-light:#32e6b9;
  --purple:#6c4dff;
  --ink:#191a23;
  --ink-soft:#1a1a1a;
  --text-mid:#4a4d5c;
  --text-light:#858699;
  --bg-soft:#f8f9fa;
  --border-soft:#e5e5e5;
  --border:#cfd2dc;
  --shadow-md:0 6px 18px rgba(25,26,35,.07);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  color:var(--text-mid);background:#fff;line-height:1.7;font-size:15px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
/* ===== 顶部栏 ===== */
.ab-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--border-soft);
}
.ab-header-inner{
  max-width:1180px;margin:0 auto;padding:0 24px;height:64px;
  display:flex;align-items:center;justify-content:space-between;
}
.ab-logo{display:flex;align-items:center}
.brand-logo{width:120px;height:24px;display:block;flex-shrink:0;max-width:none}
.ab-back{
  font-size:14px;color:var(--ink);border:1.5px solid var(--border);padding:8px 18px;border-radius:999px;
  transition:.25s;font-weight:500;
}
.ab-back:hover{border-color:var(--brand);color:var(--brand)}
/* ===== Hero ===== */
.ab-hero{
  background:linear-gradient(180deg,#f2fbf6 0%,#fff 100%);
  padding:64px 24px 48px;text-align:center;border-bottom:1px solid var(--border-soft);
}
.ab-hero .ab-tag{
  display:inline-block;padding:5px 14px;background:rgba(15,196,104,.1);color:var(--brand);
  border:1px solid #daf0e6;font-size:13px;font-weight:600;border-radius:999px;margin-bottom:18px;letter-spacing:.5px;
}
.ab-hero h1{font-size:34px;font-weight:700;color:var(--ink);letter-spacing:-.5px;margin-bottom:16px}
.ab-hero .ab-sub{max-width:760px;margin:0 auto;font-size:15px;color:var(--text-mid);line-height:1.9}
/* ===== 内容 ===== */
.ab-container{max-width:900px;margin:0 auto;padding:52px 24px 40px}
.ab-section{margin-bottom:52px;scroll-margin-top:88px}
.ab-section > h2{
  font-size:22px;font-weight:700;color:var(--ink);margin-bottom:20px;
  font-family:'PingFang SC',sans-serif;position:relative;padding-left:14px;
}
.ab-section > h2::before{content:'';position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:linear-gradient(180deg,var(--brand),var(--brand-light))}
.ab-section p{font-size:15px;color:var(--text-mid);margin-bottom:16px;line-height:1.95}
/* 产品发展时间线 */
.ab-timeline{position:relative;padding-left:26px}
.ab-timeline::before{content:'';position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--brand),var(--brand-light));opacity:.4}
.ab-tl-item{position:relative;margin-bottom:18px;padding:14px 18px;background:var(--bg-soft);border-radius:10px;border-left:3px solid var(--brand)}
.ab-tl-item::before{
  content:'';position:absolute;left:-26px;top:18px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
}
.ab-tl-year{font-size:14px;font-weight:700;color:var(--brand);margin-bottom:4px;font-family:'PingFang SC',sans-serif}
.ab-tl-item p{font-size:14px;color:var(--text-mid);line-height:1.8;margin:0}
/* 信息卡 */
.ab-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.ab-card{background:var(--bg-soft);border:1px solid var(--border-soft);border-radius:12px;padding:22px}
.ab-card h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.ab-card h3::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--brand);flex-shrink:0}
.ab-card p{font-size:14px;color:var(--text-mid);line-height:1.85;margin-bottom:8px}
.ab-card p:last-child{margin-bottom:0}
.ab-card .ab-label{color:var(--text-light);font-size:13px}
.ab-card .ab-value{color:var(--ink);font-weight:600}
.ab-tip{
  background:linear-gradient(135deg,rgba(15,196,104,.08),rgba(50,230,185,.05));
  border:1px solid rgba(15,196,104,.25);border-radius:10px;padding:14px 18px;
  font-size:13.5px;color:var(--text-mid);line-height:1.8;
}
.ab-tip b{color:var(--brand)}
/* ===== 服务矩阵 ===== */
.ab-service{margin-bottom:24px}
.ab-service > h3{
  font-size:16px;font-weight:700;color:var(--ink);margin-bottom:12px;
  display:flex;align-items:center;gap:8px;font-family:'PingFang SC',sans-serif;
}
.ab-service > h3 .ab-num{
  flex-shrink:0;width:22px;height:22px;border-radius:6px;background:linear-gradient(135deg,var(--brand),var(--brand-light));
  color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.ab-tags{display:flex;flex-wrap:wrap;gap:8px}
.ab-tag{
  display:inline-block;padding:6px 12px;background:var(--bg-soft);border:1px solid var(--border-soft);
  color:var(--text-mid);font-size:13px;border-radius:8px;line-height:1.4;
}
.ab-tag b{color:var(--brand);font-weight:600}
/* ===== 数据背书 ===== */
.ab-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.ab-stat{
  background:var(--bg-soft);border:1px solid var(--border-soft);border-radius:12px;padding:22px 16px;text-align:center;
}
.ab-stat .ab-num{font-size:28px;font-weight:700;color:var(--brand);font-family:'PingFang SC',sans-serif;line-height:1.2}
.ab-stat .ab-num small{font-size:14px;font-weight:600}
.ab-stat .ab-label{font-size:13px;color:var(--text-light);margin-top:6px;line-height:1.5}
/* ===== 痛点方案 ===== */
.ab-solution{
  display:flex;gap:12px;background:var(--bg-soft);border:1px solid var(--border-soft);
  border-radius:10px;padding:14px 16px;margin-bottom:12px;
}
.ab-solution .ab-sn{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-light));
  color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.ab-solution p{font-size:14px;color:var(--text-mid);line-height:1.8;margin:0}
.ab-solution p b{color:var(--ink)}
/* ===== 痛点对比表格 ===== */
.ab-table-wrap{overflow-x:auto;border:1px solid var(--border-soft);border-radius:12px}
.ab-table{width:100%;border-collapse:collapse;min-width:760px;font-size:13.5px}
.ab-table th{
  background:linear-gradient(135deg,var(--brand),var(--brand-light));color:#fff;
  padding:12px 14px;text-align:left;font-weight:600;white-space:nowrap;font-size:14px;
}
.ab-table th:first-child{width:150px}
.ab-table td{
  padding:14px;border-top:1px solid var(--border-soft);color:var(--text-mid);
  line-height:1.8;vertical-align:top;
}
.ab-table tr:nth-child(even) td{background:var(--bg-soft)}
.ab-table .ab-pn{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);
}
.ab-table .ab-pn .n{
  flex-shrink:0;width:20px;height:20px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-light));
  color:#fff;font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}
.ab-table .ab-pain{font-weight:600;color:var(--ink)}
.ab-table .ab-sol b{color:var(--brand);font-weight:600}
/* ===== 底部 ===== */
.ab-footer{background:var(--ink);color:rgba(255,255,255,.6);padding:32px 24px;text-align:center;font-size:13px;margin-top:40px;line-height:1.9}
.ab-footer a{color:var(--brand-light)}
.ab-footer a:hover{text-decoration:underline}
/* ===== 响应式 ===== */
@media(max-width:720px){
  .ab-hero h1{font-size:26px}
  .ab-cards{grid-template-columns:1fr}
  .ab-stats{grid-template-columns:1fr 1fr}
  .ab-container{padding:36px 18px 28px}
}