/* =============================================
   about.css - 关于我们（深色主题）
   ============================================= */
.container, .baichong-container { max-width: 1600px; }

/* ===== 企业介绍 ===== */
.ab-intro-grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: 56px; align-items: center; }
.ab-intro-body { color: var(--body-color); font-size: .97rem; line-height: 1.95; }
.ab-intro-body h2, .ab-intro-body h3 { color: var(--title-color); font-weight: 800; line-height: 1.45; margin: 26px 0 12px; }
.ab-intro-body h2 { font-size: 1.28rem; }
.ab-intro-body h3 { font-size: 1.1rem; }
.ab-intro-body h2:first-child, .ab-intro-body h3:first-child { margin-top: 0; }
.ab-intro-body p { margin: 0 0 14px; }
.ab-intro-body ul, .ab-intro-body ol { margin: 0 0 14px; padding-left: 20px; }
.ab-intro-body li { margin-bottom: 8px; }
.ab-intro-body strong { color: var(--text); }
.ab-intro-body a { color: var(--accent2); }
.ab-intro-body img { max-width: 100%; height: auto; border-radius: 12px; margin: 8px 0; }
.ab-intro-media { position: relative; }
.ab-intro-media::before {
  content: ''; position: absolute; top: -22px; right: -22px; width: 170px; height: 170px;
  border: 2px solid rgba(255,92,51,.3); border-radius: 20px;
}
.ab-intro-media img {
  position: relative; z-index: 1; display: block; width: 100%;
  border-radius: 18px; border: 1px solid var(--border); box-shadow: 0 24px 60px rgba(0,0,0,.5);
}

/* ===== 服务保障 ===== */
.ab-guar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.ab-guar-card { padding: 30px 26px; display: flex; flex-direction: column; gap: 12px; text-decoration: none; }
.ab-guar-ico {
  width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  background: rgba(255,92,51,.12); color: var(--accent2);
}
.ab-guar-ico svg { width: 26px; height: 26px; }
.ab-guar-card h3 { font-size: 1.02rem; font-weight: 700; color: var(--title-color); margin: 0; line-height: 1.5; }
.ab-guar-card p { font-size: .9rem; color: var(--body-color); line-height: 1.8; margin: 0; }
.ab-more { margin-top: auto; font-size: .82rem; font-weight: 600; color: var(--accent2); text-decoration: none; }
.ab-guar-card:hover .ab-more { color: var(--accent); }

/* ===== 产品方案 ===== */
.ab-prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.ab-prod-card { overflow: hidden; display: flex; flex-direction: column; text-decoration: none; }
.ab-prod-media { aspect-ratio: 4 / 3; overflow: hidden; background: var(--card-2); }
.ab-prod-media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s ease; }
.ab-prod-card:hover .ab-prod-media img { transform: scale(1.06); }
.ab-prod-body { padding: 18px 18px 22px; }
.ab-prod-body h3 { font-size: 1rem; font-weight: 700; color: var(--title-color); margin: 0 0 8px; line-height: 1.5; }
.ab-prod-body p { font-size: .85rem; color: var(--body-color); line-height: 1.75; margin: 0; }

/* ===== 资质荣誉 ===== */
.ab-qual-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.ab-qual-card { padding: 24px; display: flex; gap: 14px; align-items: flex-start; }
.ab-qual-badge {
  flex-shrink: 0; width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(245,197,24,.12); color: var(--gold); font-weight: 800; font-size: .95rem;
}
.ab-qual-card h3 { font-size: .98rem; font-weight: 700; color: var(--title-color); margin: 0 0 6px; line-height: 1.5; }
.ab-qual-card p { font-size: .85rem; color: var(--body-color); line-height: 1.7; margin: 0; }

/* ===== 发展历程 ===== */
.ab-time { position: relative; }
.ab-time::before {
  content: ''; position: absolute; left: 19px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(180deg, var(--accent), rgba(255,92,51,0));
}
.ab-time-item { position: relative; padding: 0 0 30px 56px; }
.ab-time-item:last-child { padding-bottom: 0; }
.ab-time-dot {
  position: absolute; left: 12px; top: 2px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 4px rgba(255,92,51,.18);
}
.ab-time-year { font-size: .82rem; font-weight: 700; color: var(--accent2); letter-spacing: 1px; }
.ab-time-item h3 { font-size: 1.04rem; font-weight: 700; color: var(--title-color); margin: 6px 0 8px; }
.ab-time-item p { font-size: .9rem; color: var(--body-color); line-height: 1.8; margin: 0; }

/* ===== 响应式 ===== */
@media(max-width:1200px) {
  .ab-guar-grid, .ab-qual-grid { grid-template-columns: repeat(2, 1fr); }
  .ab-prod-grid { grid-template-columns: repeat(3, 1fr); }
}
@media(max-width:992px) {
  .ab-intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .ab-intro-media { max-width: 560px; }
  .ab-prod-grid { grid-template-columns: repeat(2, 1fr); }
}
@media(max-width:640px) {
  .ab-intro-media::before { display: none; }
  .ab-guar-grid, .ab-qual-grid, .ab-prod-grid { grid-template-columns: 1fr; }
  .ab-guar-card { padding: 24px 20px; }
}