/* ============================================================
   style-about.css — 关于我们（独立原创布局：环形时间线 + 圆卡叙事）
   OMICA 网站建设 · 极简卫浴风
   ============================================================ */

/* ---------- Hero：右侧出血大圆 + 嵌套环 ---------- */
.ab-hero {
  position: relative;
  background: var(--white);
  padding: 178px 0 96px;
  overflow: hidden;
}
.ab-hero::before {
  content: "";
  position: absolute;
  right: -260px; top: -260px;
  width: 820px; height: 820px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 32%, rgba(27,27,27,.07), rgba(27,27,27,.02) 46%, transparent 70%);
  pointer-events: none;
}
.ab-hero::after {
  content: "";
  position: absolute;
  right: -120px; top: -120px;
  width: 560px; height: 560px;
  border-radius: 50%;
  border: 1px solid var(--gray-300);
  pointer-events: none;
}
.ab-hero-ring {
  position: absolute;
  right: 4%; top: 96px;
  width: 380px; height: 380px;
  border-radius: 50%;
  border: 1px dashed var(--gray-300);
  animation: abSpin 46s linear infinite;
  pointer-events: none;
}
.ab-hero-ring::before {
  content: "";
  position: absolute;
  left: -6px; top: 50%;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--ink);
}
.ab-hero-ring::after {
  content: "";
  position: absolute;
  right: 34px; top: 18px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gray-500);
}
@keyframes abSpin { to { transform: rotate(360deg); } }
.ab-hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; }
.ab-hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: .34em;
  color: var(--gray-600);
  margin-bottom: 26px;
}
.ab-hero-kicker::before { content: ""; width: 34px; height: 1px; background: var(--ink); }
.ab-hero h1 { font-size: clamp(30px, 4vw, 46px); font-weight: 800; line-height: 1.28; color: var(--ink); }
.ab-hero h1 em { font-style: normal; color: var(--gray-400); }
.ab-hero-desc { margin: 26px 0 34px; font-size: 16px; line-height: 2; color: var(--ink-mute); max-width: 560px; }
.ab-hero-meta { display: flex; gap: 40px; padding-top: 28px; border-top: 1px solid var(--gray-200); }
.ab-hero-meta b { display: block; font-size: 26px; color: var(--ink); font-weight: 800; }
.ab-hero-meta span { font-size: 13px; color: var(--gray-500); }
.ab-hero-photo { position: relative; justify-self: end; }
.ab-photo-ring {
  width: min(430px, 42vw);
  height: min(430px, 42vw);
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--gray-200);
  position: relative;
}
.ab-photo-ring img { width: 100%; height: 100%; object-fit: cover; }
.ab-photo-ring::after {
  content: "";
  position: absolute;
  inset: 16px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.55);
}
.ab-photo-tag {
  position: absolute;
  left: -26px; bottom: 26px;
  background: var(--ink);
  color: #fff;
  border-radius: 50%;
  width: 118px; height: 118px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.ab-photo-tag b { font-size: 24px; font-weight: 800; }
.ab-photo-tag span { font-size: 11.5px; color: #CFCFCA; margin-top: 2px; letter-spacing: .12em; }

/* ---------- 公司叙事：左圆右文 ---------- */
.ab-story { background: var(--gray-50); overflow: hidden; position: relative; }
.ab-story::before {
  content: "";
  position: absolute;
  left: -180px; bottom: -180px;
  width: 480px; height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27,27,27,.05), transparent 62%);
  pointer-events: none;
}
.ab-story-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 64px; align-items: center; position: relative; }
.ab-story-media { position: relative; }
.ab-story-media .ring-bg {
  position: absolute;
  inset: -26px;
  border-radius: 50%;
  border: 1px dashed var(--gray-300);
  animation: abSpin 60s linear infinite;
}
.ab-story-media .disc {
  border-radius: 50%;
  overflow: hidden;
  aspect-ratio: 1/1;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-md);
}
.ab-story-media .disc img { width: 100%; height: 100%; object-fit: cover; }
.ab-story-body h2 { font-size: clamp(24px, 2.8vw, 34px); font-weight: 800; color: var(--ink); line-height: 1.4; margin-bottom: 22px; }
.ab-story-body p { font-size: 15px; line-height: 2.05; color: var(--ink-mute); margin-bottom: 16px; }
.ab-story-body p b { color: var(--ink); font-weight: 700; }
.ab-story-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 30px; }
.ab-fact {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 18px 16px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.ab-fact:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.ab-fact b { display: block; font-size: 21px; color: var(--ink); font-weight: 800; }
.ab-fact span { font-size: 12.5px; color: var(--gray-500); }

/* ---------- 价值观：三个圆卡错位 ---------- */
.ab-value { background: var(--white); overflow: hidden; position: relative; }
.ab-value::after {
  content: "";
  position: absolute;
  right: -120px; top: 60px;
  width: 320px; height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(27,27,27,.04), transparent 64%);
  pointer-events: none;
}
.ab-value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 60px; margin-top: 40px; position: relative; }
.ab-value-item { text-align: center; position: relative; }
.ab-value-item:nth-child(2) { transform: translateY(44px); }
.ab-value-item:nth-child(3) { transform: translateY(12px); }
.ab-value-circle {
  width: 168px; height: 168px;
  margin: 0 auto 26px;
  border-radius: 50%;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all var(--transition);
}
.ab-value-item:hover .ab-value-circle { background: var(--ink); border-color: var(--ink); transform: scale(1.05); }
.ab-value-circle::before,
.ab-value-circle::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--gray-300);
}
.ab-value-circle::before { inset: -14px; }
.ab-value-circle::after { inset: -26px; border-style: dashed; animation: abSpin 40s linear infinite; }
.ab-value-item:hover .ab-value-circle::before,
.ab-value-item:hover .ab-value-circle::after { border-color: var(--gray-500); }
.ab-value-circle svg { color: var(--ink); transition: color var(--transition); }
.ab-value-item:hover .ab-value-circle svg { color: #fff; }
.ab-value-item h3 { font-size: 18px; color: var(--ink); font-weight: 700; margin-bottom: 12px; }
.ab-value-item p { font-size: 14px; color: var(--ink-mute); line-height: 1.9; max-width: 280px; margin: 0 auto; }

/* ---------- 大事记：纵向圆环时间线 ---------- */
.ab-timeline-sec { background: var(--gray-50); overflow: hidden; }
.ab-timeline { position: relative; max-width: 860px; margin: 46px auto 0; }
.ab-timeline::before {
  content: "";
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 1px;
  background: var(--gray-300);
  transform: translateX(-50%);
}
.ab-tl-item { position: relative; display: flex; align-items: center; min-height: 96px; }
.ab-tl-item:nth-child(odd) .ab-tl-card { margin-right: calc(50% + 34px); text-align: right; }
.ab-tl-item:nth-child(even) .ab-tl-card { margin-left: calc(50% + 34px); }
.ab-tl-dot {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 44px; height: 44px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  z-index: 2;
  transition: all var(--transition);
}
.ab-tl-item:hover .ab-tl-dot { background: var(--ink); color: #fff; }
.ab-tl-card { width: 50%; padding: 6px 0; }
.ab-tl-card b { display: block; font-size: 14px; letter-spacing: .2em; color: var(--gray-600); margin-bottom: 6px; }
.ab-tl-card h3 { font-size: 17px; color: var(--ink); font-weight: 700; margin-bottom: 6px; }
.ab-tl-card p { font-size: 13.5px; color: var(--ink-mute); line-height: 1.8; }

/* ---------- 团队 ---------- */
.ab-team { background: var(--white); position: relative; overflow: hidden; }
.ab-team::before {
  content: "";
  position: absolute;
  left: -160px; top: -160px;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27,27,27,.05), transparent 64%);
  pointer-events: none;
}
.ab-team-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; position: relative; }
.ab-team-photo { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--gray-200); position: relative; }
.ab-team-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(27,27,27,.3));
}
.ab-team-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.ab-team-photo figcaption {
  position: absolute;
  left: 26px; bottom: 22px;
  color: #fff;
  font-size: 14px;
  letter-spacing: .12em;
  z-index: 2;
}
.ab-team-list { display: grid; gap: 18px; }
.ab-role {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  transition: all var(--transition);
}
.ab-role:hover { border-color: var(--ink); transform: translateX(6px); background: #fff; }
.ab-role-circle {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.ab-role h3 { font-size: 16px; color: var(--ink); font-weight: 700; }
.ab-role p { font-size: 13.5px; color: var(--ink-mute); line-height: 1.7; margin-top: 3px; }

/* ---------- 服务范围 ---------- */
.ab-scope { background: var(--gray-50); }
.ab-scope-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; }
.ab-scope-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 26px 26px 24px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}
.ab-scope-card::before {
  content: "";
  position: absolute;
  right: -50px; top: -50px;
  width: 130px; height: 130px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27,27,27,.05), transparent 66%);
}
.ab-scope-card:hover { border-color: var(--ink); box-shadow: var(--shadow-sm); }
.ab-scope-card h3 { font-size: 16.5px; color: var(--ink); font-weight: 700; margin: 16px 0 10px; }
.ab-scope-card p { font-size: 13.5px; color: var(--ink-mute); line-height: 1.8; }
.ab-scope-card a { font-size: 13px; color: var(--ink); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; }
.ab-scope-card a svg { transition: transform var(--transition); }
.ab-scope-card a:hover svg { transform: translateX(4px); }

/* ---------- CTA（本页专属：居中同心圆装饰） ---------- */
.cta-sec { background: var(--ink); color: #fff; overflow: hidden; }
.cta-sec::before {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 760px; height: 760px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.12);
  pointer-events: none;
}
.cta-sec::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 540px; height: 540px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px dashed rgba(255,255,255,.16);
  animation: abSpin 70s linear infinite;
  pointer-events: none;
}
.cta-inner p { color: rgba(255,255,255,.72); }
.cta-contact { color: rgba(255,255,255,.85); }
.cta-contact a { color: #fff; }
.cta-contact a:hover { text-decoration: underline; text-underline-offset: 5px; }
.btn-ghost-light { color: #fff; border: 1px solid rgba(255,255,255,.6); background: transparent; }
.btn-ghost-light:hover { background: #fff; color: var(--ink); box-shadow: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .ab-hero { padding-top: 148px; }
  .ab-hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .ab-hero-photo { justify-self: start; }
  .ab-photo-ring { width: min(360px, 76vw); height: min(360px, 76vw); }
  .ab-hero-ring { display: none; }
  .ab-story-grid, .ab-team-grid { grid-template-columns: 1fr; }
  .ab-value-grid { grid-template-columns: 1fr; gap: 84px; }
  .ab-value-item:nth-child(2), .ab-value-item:nth-child(3) { transform: none; }
  .ab-scope-grid { grid-template-columns: repeat(2, 1fr); }
  .ab-timeline::before { left: 22px; }
  .ab-tl-item:nth-child(odd) .ab-tl-card, .ab-tl-item:nth-child(even) .ab-tl-card { width: auto; margin: 0 0 0 74px; text-align: left; }
  .ab-tl-dot { left: 22px; }
}
@media (max-width: 640px) {
  .ab-hero { padding: 132px 0 60px; }
  .ab-hero-meta { gap: 24px; flex-wrap: wrap; }
  .ab-story-facts { grid-template-columns: 1fr; }
  .ab-scope-grid { grid-template-columns: 1fr; }
  .ab-tl-card p { font-size: 13px; }
  .ab-photo-tag { width: 96px; height: 96px; left: -8px; }
}