/* ===== 关于我们页 ===== */
.ab-banner {
  min-height: 38vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 80px 16px 36px;
  position: relative; overflow: hidden;
}
.ab-banner::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(0,200,83,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,83,0.04) 1px, transparent 1px);
  background-size: 24px 24px; pointer-events: none;
}
.ab-banner h1 { font-size: 28px; font-weight: 800; position: relative; }
.ab-banner .sub { font-size: 14px; color: var(--muted); margin-top: 10px; position: relative; }
.ab-banner .green-line { width: 48px; height: 2px; background: var(--green-grad); margin: 14px auto 0; border-radius: 2px; position: relative; }

/* ===== 公司简介 ===== */
.ab-intro { padding: 40px 16px; }
.ab-intro-text {
  font-size: 14px; line-height: 1.9; color: var(--muted);
  text-align: justify;
}
.ab-intro-text strong { color: var(--ink); font-weight: 600; }
.ab-intro-text .brand { color: var(--accent2); font-weight: 700; }

/* ===== 发展历程 ===== */
.ab-timeline-sec { padding: 36px 16px; border-top: 1px solid var(--rule); }
.ab-sec-title { font-size: 20px; font-weight: 700; text-align: center; }
.ab-sec-line { width: 40px; height: 2px; background: var(--green-grad); border-radius: 2px; margin: 10px auto 24px; }
.ab-timeline { padding-left: 28px; position: relative; }
.ab-timeline::before {
  content: ''; position: absolute; left: 7px; top: 6px; bottom: 6px;
  width: 2px; background: linear-gradient(180deg, var(--deep), var(--accent), var(--accent2));
  border-radius: 1px;
}
.ab-tl-item { position: relative; margin-bottom: 28px; }
.ab-tl-item:last-child { margin-bottom: 0; }
.ab-tl-item::before {
  content: ''; position: absolute; left: -25px; top: 5px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 4px rgba(0,200,83,0.2);
}
.ab-tl-item.last::before { background: var(--accent2); box-shadow: 0 0 0 5px rgba(127,221,76,0.3); }
.ab-tl-year { font-size: 12px; font-weight: 700; color: var(--accent2); }
.ab-tl-title { font-size: 15px; font-weight: 600; margin-top: 3px; }
.ab-tl-desc { font-size: 12px; color: var(--muted); margin-top: 5px; line-height: 1.6; }

/* ===== 研发实力 ===== */
.ab-rd-sec { padding: 36px 16px; border-top: 1px solid var(--rule); }
.ab-rd-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.ab-rd-card {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: 12px;
  padding: 18px 16px; text-align: center; position: relative;
}
.ab-rd-card .corner { position: absolute; top: 10px; right: 10px; width: 8px; height: 8px; border-top: 2px solid var(--rule); border-right: 2px solid var(--rule); }
.ab-rd-num {
  font-size: 32px; font-weight: 800; line-height: 1;
  background: var(--silver-grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.ab-rd-label { font-size: 12px; color: var(--muted); margin-top: 6px; }

/* ===== 联系方式 ===== */
.ab-contact-sec { padding: 36px 16px; border-top: 1px solid var(--rule); }
.ab-contact-card {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: 12px;
  padding: 20px 16px; margin-bottom: 12px;
  display: flex; align-items: center; gap: 14px;
}
.ab-contact-icon { width: 36px; height: 36px; border-radius: 10px; background: rgba(0,200,83,0.1); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.ab-contact-icon svg { width: 20px; height: 20px; color: var(--accent); }
.ab-contact-info { flex: 1; }
.ab-contact-label { font-size: 12px; color: var(--muted); }
.ab-contact-value { font-size: 15px; font-weight: 600; margin-top: 2px; word-break: break-all; }
.ab-contact-value a { color: var(--ink); }

.ab-qr-sec { text-align: center; padding: 20px 16px 0; }
.ab-wx-card {
  margin: 0 auto; padding: 24px 32px;
  background: var(--bg2); border: 1px solid var(--accent); border-radius: 12px;
  max-width: 240px;
}
.ab-wx-label { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.ab-wx-id { font-size: 24px; font-weight: 800; color: var(--accent); letter-spacing: 1px; }
.ab-wx-tip { font-size: 12px; color: var(--weak); margin-top: 8px; }

/* ===== 底部品牌 ===== */
.ab-footer-sec { padding: 36px 16px 80px; text-align: center; border-top: 1px solid var(--rule); }
.ab-footer-sec h2 { font-size: 18px; font-weight: 800; }
.ab-footer-sec .slogan { font-size: 13px; color: var(--accent2); margin-top: 8px; letter-spacing: 0.05em; }
.ab-footer-sec .meta { font-size: 11px; color: var(--weak); margin-top: 14px; }