/* ══════════════════════════════════════════
   about.css — 关于我们页专属样式
   ══════════════════════════════════════════ */

/* 品牌故事 */
.brand-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.brand-text {}
.brand-text .section-label { margin-bottom: 14px; }
.brand-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 2.8vw, 38px);
  font-weight: 700; color: var(--text-hi);
  line-height: 1.3; margin-bottom: 20px;
}
.brand-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--brand), var(--cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.brand-paragraphs { display: flex; flex-direction: column; gap: 14px; }
.brand-paragraphs p {
  font-size: 14px; color: var(--text-md); line-height: 1.9;
}
.brand-logo-block {
  background: var(--bg-card);
  border: 1px solid var(--border-hi);
  padding: 52px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 24px;
  position: relative; overflow: hidden;
}
.brand-logo-block::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--cyan));
}
.brand-logo-big {
  display: flex; align-items: center; gap: 20px;
}
.brand-emblem-big {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, var(--brand), var(--cyan));
  clip-path: polygon(0 0, 85% 0, 100% 15%, 100% 100%, 15% 100%, 0 85%);
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.brand-emblem-big::after {
  content: '';
  position: absolute; inset: 3px;
  background: var(--bg-surface);
  clip-path: polygon(0 0, 83% 0, 100% 17%, 100% 100%, 17% 100%, 0 83%);
}
.brand-emblem-big span {
  position: relative; z-index: 1;
  font-family: var(--font-serif); font-size: 28px; font-weight: 700;
  color: var(--brand);
}
.brand-wordmark-big {}
.brand-cn-big {
  font-size: 28px; font-weight: 700;
  color: var(--text-hi); letter-spacing: 4px;
}
.brand-en-big {
  font-size: 14px; font-weight: 600;
  color: var(--brand); letter-spacing: 8px;
  font-family: var(--font-en); margin-top: 4px;
}
.brand-tagline {
  font-size: 13px; color: var(--text-lo); letter-spacing: 2px;
  text-align: center; font-family: var(--font-cn);
}
.brand-reg {
  font-size: 11px; color: var(--text-lo); letter-spacing: 0.5px;
  font-family: var(--font-en); text-align: center;
}

/* 公司数据 */
.company-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--border); overflow: hidden;
}
.cstat {
  background: var(--bg-card);
  padding: 36px 24px; text-align: center;
}
.cstat-num {
  font-family: var(--font-en);
  font-size: 44px; font-weight: 700;
  color: var(--text-hi); line-height: 1;
  display: block; margin-bottom: 4px;
}
.cstat-num span { color: var(--brand); }
.cstat-label { font-size: 12px; color: var(--text-lo); letter-spacing: 0.5px; }

/* 核心价值观（3列版，区别于首页2列版） */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 36px 28px;
  transition: all 0.3s;
  position: relative; overflow: hidden;
  text-align: center;
}
.value-card::before {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--brand), transparent);
  transform: scaleX(0); transform-origin: center;
  transition: transform 0.3s;
}
.value-card:hover::before { transform: scaleX(1); }
.value-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}
.value-icon { font-size: 36px; margin-bottom: 16px; display: block; }
.value-title { font-size: 18px; font-weight: 700; color: var(--text-hi); margin-bottom: 4px; }
.value-en { font-size: 10px; font-weight: 600; color: var(--brand); letter-spacing: 2px; font-family: var(--font-en); margin-bottom: 14px; display: block; }
.value-desc { font-size: 13px; color: var(--text-md); line-height: 1.8; }

/* 团队 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all 0.3s;
}
.team-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}
.team-avatar-wrap {
  padding: 28px 28px 0;
  display: flex; justify-content: center;
}
.team-avatar {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, var(--brand), var(--cyan));
  clip-path: polygon(0 0, 85% 0, 100% 15%, 100% 100%, 0 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700; color: white;
  font-family: var(--font-cn);
}
.team-info { padding: 16px 20px 24px; text-align: center; }
.team-name { font-size: 16px; font-weight: 700; color: var(--text-hi); margin-bottom: 4px; }
.team-role { font-size: 11px; font-weight: 600; color: var(--brand); letter-spacing: 1px; font-family: var(--font-en); margin-bottom: 10px; }
.team-desc { font-size: 12px; color: var(--text-lo); line-height: 1.6; }

/* 服务体系 */
.service-timeline {
  position: relative;
  padding-left: 60px;
}
.service-timeline::before {
  content: '';
  position: absolute; left: 24px; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--brand), var(--cyan), transparent);
}
.st-item {
  position: relative;
  padding: 0 0 40px 0;
}
.st-item:last-child { padding-bottom: 0; }
.st-dot {
  position: absolute; left: -48px; top: 6px;
  width: 24px; height: 24px;
  background: var(--bg-raised); border: 2px solid var(--brand);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.st-dot-inner {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--brand);
}
.st-phase {
  font-size: 9px; font-weight: 700; letter-spacing: 3px;
  text-transform: uppercase; color: var(--brand);
  font-family: var(--font-en); margin-bottom: 6px;
}
.st-title { font-size: 17px; font-weight: 700; color: var(--text-hi); margin-bottom: 10px; }
.st-items-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.st-item-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 16px;
}
.st-item-title { font-size: 13px; font-weight: 600; color: var(--text-hi); margin-bottom: 4px; }
.st-item-desc { font-size: 12px; color: var(--text-lo); line-height: 1.6; }

/* 联系我们 */
.contact-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 100px 52px;
}
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: start;
}
.contact-info {}
.contact-info .section-label { margin-bottom: 14px; }
.contact-info .section-title { margin-bottom: 24px; }
.contact-desc { font-size: 14px; color: var(--text-md); line-height: 1.9; margin-bottom: 36px; }
.contact-items { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex; gap: 16px; align-items: flex-start;
}
.contact-icon-wrap {
  width: 44px; height: 44px; flex-shrink: 0;
  background: var(--bg-raised); border: 1px solid var(--border-hi);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.contact-item-label {
  font-size: 10px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--text-lo);
  font-family: var(--font-en); margin-bottom: 4px;
}
.contact-item-val {
  font-size: 15px; font-weight: 600; color: var(--text-hi);
}
.contact-item-sub { font-size: 12px; color: var(--text-lo); margin-top: 2px; }

/* 联系表单 */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 40px;
  position: relative;
}
.contact-form::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--cyan));
}
.form-title {
  font-size: 18px; font-weight: 700; color: var(--text-hi);
  margin-bottom: 6px;
}
.form-subtitle { font-size: 13px; color: var(--text-lo); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-label {
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--text-lo);
  font-family: var(--font-en);
}
.form-input, .form-select, .form-textarea {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  color: var(--text-hi);
  padding: 12px 16px;
  font-size: 14px; font-family: var(--font-cn);
  outline: none; transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-glow);
}
.form-textarea { resize: vertical; min-height: 100px; }
.form-select option { background: var(--bg-raised); }
.form-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--brand), var(--brand-dim));
  color: white; font-size: 15px; font-weight: 700;
  letter-spacing: 1px; border: none; cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 95% 100%, 0 100%);
  transition: all 0.25s;
}
.form-submit:hover {
  background: linear-gradient(135deg, var(--cyan), var(--brand));
  box-shadow: 0 4px 20px rgba(14,165,233,0.4);
  transform: translateY(-2px);
}
.form-note { font-size: 11px; color: var(--text-lo); margin-top: 12px; text-align: center; }

/* 表单反馈消息 */
#form-msg {
  display: none;
  margin-top: 14px;
  padding: 12px 16px;
  font-size: 13px; font-weight: 500;
  border-left: 3px solid;
  line-height: 1.6;
}
#form-msg.msg-success {
  display: block;
  background: rgba(16,185,129,0.08);
  border-color: var(--green);
  color: var(--green);
}
#form-msg.msg-error {
  display: block;
  background: rgba(239,68,68,0.08);
  border-color: var(--red);
  color: var(--red);
}
#form-msg.msg-warn {
  display: block;
  background: rgba(245,158,11,0.08);
  border-color: var(--gold);
  color: var(--gold);
}

/* 地图占位 */
.map-placeholder {
  background: var(--bg-card);
  border: 1px solid var(--border);
  height: 200px;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 8px;
  margin-top: 24px;
}
.map-placeholder-icon { font-size: 32px; }
.map-placeholder-text { font-size: 13px; color: var(--text-lo); }

@media (max-width: 1100px) {
  .team-grid { grid-template-columns: repeat(3, 1fr); }
  .brand-logo-block { padding: 36px; }
}
@media (max-width: 900px) {
  .brand-story { grid-template-columns: 1fr; gap: 32px; }
  .company-stats { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .st-items-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-section { padding: 60px 20px; }
  .brand-logo-block { padding: 28px; }
}
@media (max-width: 600px) {
  .values-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr 1fr; }
  .company-stats { grid-template-columns: 1fr 1fr; }
  .st-items-grid { grid-template-columns: 1fr; }
  .service-timeline { padding-left: 44px; }
  .contact-form { padding: 28px 20px; }
  .brand-cn-big { font-size: 22px; }
  .brand-en-big { font-size: 11px; letter-spacing: 4px; }
  .cstat-num { font-size: 36px; }
}
@media (max-width: 400px) {
  .team-grid { grid-template-columns: 1fr; }
  .company-stats { grid-template-columns: 1fr 1fr; }
}