/* ============================================================
   about.html · 关于我们
   hero 变体 H17：大幅图背景 + 文字卡
   ============================================================ */

.ab-hero{position:relative;padding:0;min-height:520px;display:flex;align-items:center;overflow:hidden}
.ab-hero-bg{position:absolute;inset:0}
.ab-hero-bg img{width:100%;height:100%;object-fit:cover}
.ab-hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(243,250,253,.96) 0%,rgba(243,250,253,.75) 45%,rgba(243,250,253,.25) 100%)}
.ab-xline{top:50%;opacity:.6}
.ab-vline{left:38%;opacity:.4}
.ab-hero-in{width:min(1180px,92%);margin:0 auto;padding:90px 0}
.ab-hero-card{
  max-width:560px;background:#fff;border:2px solid var(--line);
  border-radius:var(--r-lg);padding:44px 42px;box-shadow:var(--shadow);
}
.ab-hero-title{font-size:clamp(28px,3.6vw,42px);font-weight:800;margin:18px 0 16px;line-height:1.35}
.ab-hero-title em{font-style:normal;color:var(--blue-deep)}
.ab-hero-sub{color:var(--muted);line-height:1.9}
.ab-hero-cta{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap}

/* 公司故事长文 */
.ab-story{position:relative;background:#fff}
.ab-story-vline{left:50%;opacity:.25}
.ab-story-cols{display:grid;grid-template-columns:1fr 1fr;gap:24px 40px}
.ab-story-cols p{
  font-size:15.5px;line-height:2.05;color:var(--ink);
  background:var(--bg);border-radius:var(--r-md);padding:22px 24px;
  border-top:4px solid var(--blue);
}
.ab-story-cols p:nth-child(2n){border-top-color:var(--yellow)}
.ab-story-cols p:nth-child(3n){border-top-color:var(--green)}

/* 价值观 4 卡错位 */
.ab-values{position:relative;background:var(--bg)}
.ab-values-xline{top:46%;opacity:.35}
.ab-value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;max-width:900px;margin:0 auto}
.ab-value{
  background:#fff;border:2px solid var(--line);border-radius:var(--r-lg);
  padding:30px 30px 26px;box-shadow:var(--shadow-sm);
}
.ab-value-down{transform:translateY(30px)}
.ab-value h3{margin-bottom:10px}
.ab-value p{color:var(--muted);font-size:14.5px;line-height:1.9}

/* 大事记横向时间线 */
.ab-history{background:var(--cream)}
.ab-history-line{
  display:grid;grid-template-columns:repeat(5,1fr);gap:16px;position:relative;padding-top:26px;
}
.ab-history-line::before{
  content:"";position:absolute;top:8px;left:4%;right:4%;height:3px;
  background:linear-gradient(90deg,var(--blue),var(--green),var(--yellow));border-radius:3px;opacity:.5;
}
.ab-hnode{text-align:center}
.ab-hdot{
  display:inline-flex;width:52px;height:52px;border-radius:50%;
  background:var(--blue);color:var(--ink);font-weight:800;
  align-items:center;justify-content:center;margin-bottom:12px;position:relative;z-index:1;
}
.ab-hnode:nth-child(2) .ab-hdot{background:var(--green)}
.ab-hnode:nth-child(3) .ab-hdot{background:var(--yellow)}
.ab-hnode:nth-child(4) .ab-hdot{background:var(--blue)}
.ab-hnode:nth-child(5) .ab-hdot{background:var(--green)}
.ab-hnode b{display:block;font-size:16px;margin-bottom:4px}
.ab-hnode i{font-style:normal;font-size:13px;color:var(--muted)}

/* 团队图片 + 资质 */
.ab-team-sec{position:relative;background:#fff}
.ab-team-xline{top:12%;opacity:.35}
.ab-team-row{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center}
.ab-team-media{position:relative}
.ab-team-media img{width:100%}
.ab-team-sticker{
  position:absolute;right:-14px;bottom:-16px;background:var(--green);
  padding:10px 18px;border-radius:14px;font-size:13.5px;font-weight:800;box-shadow:var(--shadow-sm);
}
.ab-team-text p{color:var(--muted);line-height:1.9;font-size:15.5px;margin-bottom:16px}
.ab-team-text p a{font-weight:700;border-bottom:1px dashed var(--blue-deep)}
.ab-team-btns{margin-top:20px;display:flex;gap:12px;flex-wrap:wrap}

/* 数字墙 */
.ab-numbers{background:linear-gradient(120deg,var(--green) 0%,var(--blue) 100%)}
.ab-num-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.ab-num b{display:block;font-size:clamp(24px,3vw,36px);font-weight:800;color:var(--ink)}
.ab-num span{font-size:14px;opacity:.85}

/* CTA */
.ab-cta{background:linear-gradient(120deg,var(--blue-ink) 0%,#22577A 100%);color:#fff;text-align:center}
.ab-cta-in h2{color:#fff;font-size:clamp(24px,3vw,34px)}
.ab-cta-in h2 em{color:var(--yellow);font-style:normal}
.ab-cta-in p{color:#D2E6F1;margin:16px auto 0;max-width:640px}
.ab-cta-btns{margin:26px 0 24px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.ab-cta-tel{display:flex;justify-content:center;gap:36px;flex-wrap:wrap}
.ab-cta-tel li{display:flex;gap:8px}
.ab-cta-tel span{color:#B6D6E6}
.ab-cta-tel a{color:#fff;font-weight:700}

@media (max-width:960px){
  .ab-story-cols{grid-template-columns:1fr}
  .ab-value-grid{grid-template-columns:1fr}
  .ab-value-down{transform:none}
  .ab-history-line{grid-template-columns:1fr;gap:22px;text-align:left}
  .ab-history-line::before{display:none}
  .ab-team-row{grid-template-columns:1fr}
  .ab-num-grid{grid-template-columns:1fr 1fr}
}

/* ===== 补充：客户故事 section ===== */
.ab2-story{position:relative;background:#fff}
.ab2-vline{left:12%;opacity:.25}
.ab2-row{display:grid;grid-template-columns:1fr 1.15fr;gap:50px;align-items:center}
.ab2-media img{width:100%}
.ab2-cap{margin-top:10px;font-size:13px;color:var(--muted);padding-left:12px;border-left:3px solid var(--blue)}
.ab2-text p{color:var(--muted);line-height:2;font-size:15px;margin-bottom:14px}
.ab2-text h2{margin-bottom:18px}
@media (max-width:960px){.ab2-row{grid-template-columns:1fr}}