/* ============================================================
   about.css — 关于我们页样式（牛仔裤复古风 · 机构档案手账）
   ============================================================ */

/* ---------- 模块1：页头 Hero ---------- */
.ab-hero {
  padding: 140px 0 90px;
  position: relative;
  overflow: hidden;
}
.ab-hero::before {
  content: ""; position: absolute; right: -120px; bottom: -160px;
  width: 460px; height: 460px; border-radius: 50%;
  border: 2px dashed rgba(233,220,195,.25);
  pointer-events: none;
}
.ab-hero::after {
  content: ""; position: absolute; left: -80px; top: 90px;
  width: 220px; height: 220px; border-radius: 50%;
  border: 2px dotted rgba(233,220,195,.18);
  pointer-events: none;
}
.ab-hero-num { right: 30px; top: 120px; font-size: 130px; }
.ab-hero-inner { position: relative; z-index: 2; max-width: 780px; }
.ab-hero .crumbs { margin-bottom: 18px; }
.ab-hero .crumbs a { color: rgba(250,246,238,.8); }
.ab-hero .crumbs .sep { color: rgba(250,246,238,.45); }
.ab-hero .crumbs span { color: var(--stitch); }
.ab-hero-tag { margin-bottom: 18px; }
.ab-hero h1 {
  font-size: clamp(32px, 5vw, 52px); line-height: 1.28;
  letter-spacing: 2px; color: var(--paper-100);
}
.ab-hero h1 em { font-style: normal; color: var(--stitch); }
.ab-hero-sub {
  margin-top: 20px; max-width: 640px;
  color: rgba(250,246,238,.85); font-size: 16px; line-height: 2;
}
.ab-hero-cta { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 14px; }
.btn-outline--ab { border-color: rgba(250,246,238,.6); color: var(--paper-100); }
.btn-outline--ab:hover { background: var(--paper-100); color: var(--denim-800); }

/* ---------- 模块2：机构介绍 ---------- */
.ab-intro-grid {
  display: grid; grid-template-columns: 1.35fr 1fr; gap: 56px;
  align-items: start;
}
.ab-intro-text .kicker,
.sec-head .kicker { color: var(--brown-700); }
.ab-intro-text h2 { font-size: clamp(26px, 3vw, 36px); margin: 8px 0 20px; line-height: 1.4; }
.ab-intro-text h2 em { font-style: normal; color: var(--denim-600); }
.ab-intro-text p { color: var(--ink-soft); margin-bottom: 16px; line-height: 2; font-size: 15.5px; }
.ab-intro-points { margin-top: 22px; display: flex; flex-direction: column; gap: 12px; }
.ab-intro-points li {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--paper-100); border: 1px dashed var(--line);
  border-radius: var(--r-sm); padding: 12px 16px;
  font-size: 14.5px; color: var(--denim-900);
}
.ab-intro-points svg { width: 20px; height: 20px; flex: none; color: var(--rust); margin-top: 3px; }

.ab-intro-media { position: relative; margin-top: 10px; }
.ab-intro-media .pic-frame { transform: rotate(1.2deg); }
.ab-intro-media figcaption {
  margin-top: 16px; font-size: 13px; color: var(--brown-600);
  letter-spacing: 1px; text-align: center;
}
.ab-intro-stamp {
  position: absolute; right: -16px; bottom: -20px; z-index: 3;
  width: 78px; height: 78px; font-size: 14px; line-height: 1.3;
  background: var(--rust); border-color: rgba(255,255,255,.55);
}

/* ---------- 模块3：服务理念 ---------- */
.ab-mission-quote {
  position: relative; max-width: 820px; margin: 0 auto 50px;
  text-align: center; padding: 0 20px;
}
.ab-quote-mark {
  font-family: var(--font-serif); font-size: 90px; line-height: .6;
  color: var(--brown-400); display: block; margin-bottom: 18px;
}
.ab-mission-quote p {
  font-family: var(--font-serif); font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.7; color: var(--denim-900); font-weight: 700;
}
.ab-mission-quote p em { font-style: normal; color: var(--rust); }
.ab-quote-line {
  display: block; width: 120px; height: 5px; margin: 22px auto 0;
  background: repeating-linear-gradient(90deg, var(--brown-600) 0 12px, transparent 12px 16px);
}
.ab-mission-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px;
  align-items: start;
}
.ab-m-card {
  background: var(--paper-100); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  position: relative; transition: transform .3s var(--ease), box-shadow .3s;
}
.ab-m-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.ab-m-card--offset { margin-top: 30px; border-top: 3px solid var(--denim-600); }
.ab-m-num {
  font-family: var(--font-serif); font-size: 34px; font-weight: 900;
  color: var(--denim-100); line-height: 1;
}
.ab-m-card h3 { margin: 14px 0 10px; font-size: 19px; }
.ab-m-card p { font-size: 14.5px; color: var(--ink-soft); line-height: 1.9; }

/* ---------- 模块4：团队 ---------- */
.ab-team-banner {
  position: relative; margin: 10px 0 44px; overflow: hidden;
  border-radius: var(--r-lg);
}
.ab-team-banner img { width: 100%; height: 380px; object-fit: cover; }
.ab-team-banner-mask {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(34,56,79,.05) 40%, rgba(34,56,79,.65) 100%);
  display: flex; align-items: flex-end; padding: 26px 30px;
}
.ab-team-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px;
  align-items: stretch;
}
.ab-t-card {
  background: var(--paper-100); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: 26px 22px;
  transition: transform .3s var(--ease), border-color .3s;
}
.ab-t-card:hover { transform: translateY(-5px); border-color: var(--denim-500); }
.ab-t-ico {
  display: inline-flex; width: 46px; height: 46px; border-radius: 50%;
  align-items: center; justify-content: center;
  background: var(--denim-100); color: var(--denim-700);
  margin-bottom: 14px;
}
.ab-t-ico svg { width: 24px; height: 24px; }
.ab-t-card h3 { font-size: 17px; margin-bottom: 8px; }
.ab-t-card p { font-size: 14px; color: var(--ink-soft); line-height: 1.85; }
.ab-t-photo { margin: 0; align-self: center; }
.ab-t-photo figcaption {
  padding: 10px 6px 4px; font-size: 12.5px; color: var(--brown-600);
  text-align: center; letter-spacing: 1px;
}

/* ---------- 模块5：覆盖范围 ---------- */
.ab-cover { color: var(--paper-100); }
.ab-cover .kicker--light { color: var(--stitch); }
.ab-cover-head h2 { color: var(--paper-100); font-size: clamp(24px, 3vw, 34px); margin: 8px 0 10px; }
.ab-cover-head h2 em { font-style: normal; color: var(--stitch); }
.ab-cover-head .lead { color: rgba(250,246,238,.8); max-width: 640px; }
.ab-cover-grid {
  margin-top: 34px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.ab-cover-grid a {
  display: flex; flex-direction: column; gap: 4px;
  background: rgba(250,246,238,.07); border: 1px dashed rgba(233,220,195,.35);
  border-radius: var(--r-sm); padding: 16px 18px;
  color: var(--paper-100); transition: background .25s, transform .25s;
}
.ab-cover-grid a:hover { background: rgba(233,220,195,.16); transform: translateY(-3px); color: #fff; }
.ab-cover-grid a span { font-size: 12.5px; color: var(--stitch); letter-spacing: 1px; }
.ab-cover-note {
  margin-top: 26px; font-size: 14px; color: rgba(250,246,238,.85);
  border-top: 1px dashed rgba(233,220,195,.3); padding-top: 18px;
}
.ab-cover-note a { color: var(--stitch); text-decoration: underline; text-underline-offset: 3px; }
.ab-cover-note a:hover { color: #fff; }

/* ---------- 模块6：发展历程 ---------- */
.ab-history-wrap { position: relative; }
.ab-timeline {
  position: relative; margin-top: 20px; padding-left: 8px;
}
.ab-timeline::before {
  content: ""; position: absolute; left: 118px; top: 8px; bottom: 8px;
  width: 3px;
  background: repeating-linear-gradient(180deg, var(--denim-500) 0 12px, transparent 12px 18px);
}
.ab-timeline li {
  position: relative; display: grid; grid-template-columns: 110px 1fr;
  gap: 30px; padding: 18px 0; align-items: start;
}
.ab-tl-year { justify-self: end; margin-top: 4px; }
.ab-tl-body {
  background: var(--paper-100); border: 1px solid var(--line);
  border-left: 4px solid var(--denim-600);
  border-radius: var(--r-sm); padding: 18px 22px;
  box-shadow: var(--shadow-sm);
}
.ab-tl-body h3 { font-size: 17px; margin-bottom: 6px; }
.ab-tl-body p { font-size: 14.5px; color: var(--ink-soft); line-height: 1.9; }

/* ---------- 模块7：为什么选择我们 ---------- */
.ab-why-wrap {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 50px; align-items: start;
}
.ab-why-list { display: flex; flex-direction: column; gap: 18px; }
.ab-why-list li {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--paper-100); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: 20px 22px;
  transition: transform .3s var(--ease), box-shadow .3s;
}
.ab-why-list li:hover { transform: translateX(6px); box-shadow: var(--shadow-sm); }
.ab-why-ico {
  flex: none; width: 44px; height: 44px; border-radius: var(--r-sm);
  background: var(--brown-800); color: var(--stitch);
  display: flex; align-items: center; justify-content: center;
}
.ab-why-ico svg { width: 22px; height: 22px; }
.ab-why-list h3 { font-size: 16.5px; margin-bottom: 6px; }
.ab-why-list p { font-size: 14px; color: var(--ink-soft); line-height: 1.85; }

/* ---------- 模块8：CTA ---------- */
.ab-cta-box {
  background: var(--denim-800); color: var(--paper-100);
  border-radius: var(--r-lg); text-align: center;
  padding: 56px 30px; position: relative; overflow: hidden;
}
.ab-cta-box::after {
  content: ""; position: absolute; right: -60px; top: -60px;
  width: 200px; height: 200px; border-radius: 50%;
  border: 2px dashed rgba(233,220,195,.25);
}
.ab-cta-box h2 { color: var(--paper-100); font-size: clamp(24px, 3vw, 34px); margin: 18px 0 12px; }
.ab-cta-box p { color: rgba(250,246,238,.85); max-width: 600px; margin: 0 auto; line-height: 1.9; }
.ab-cta-actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.ab-cta-mail { margin-top: 22px; font-size: 14px; color: rgba(250,246,238,.75); }
.ab-cta-mail a { color: var(--stitch); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .ab-intro-grid { grid-template-columns: 1fr; gap: 36px; }
  .ab-mission-grid { grid-template-columns: 1fr 1fr; }
  .ab-m-card--offset { margin-top: 0; }
  .ab-team-grid { grid-template-columns: 1fr 1fr; }
  .ab-cover-grid { grid-template-columns: repeat(2, 1fr); }
  .ab-why-wrap { grid-template-columns: 1fr; gap: 30px; }
  .ab-team-banner img { height: 280px; }
}

@media (max-width: 900px) {
  .ab-hero { padding: 120px 0 70px; }
  .ab-mission-grid { grid-template-columns: 1fr; }
  .ab-team-grid { grid-template-columns: 1fr; }
  .ab-timeline::before { left: 8px; }
  .ab-timeline li { grid-template-columns: 1fr; gap: 10px; padding-left: 26px; }
  .ab-tl-year { justify-self: start; }
}

@media (max-width: 640px) {
  .ab-cover-grid { grid-template-columns: 1fr; }
  .ab-hero-num { font-size: 80px; top: 100px; }
  .ab-intro-stamp { width: 62px; height: 62px; font-size: 12px; right: -6px; }
  .ab-team-banner img { height: 210px; }
}