.page-about {
  --about-gold-soft: rgba(212, 175, 55, .14);
  --about-navy-soft: rgba(27, 42, 74, .08);
  background:
    radial-gradient(1100px 420px at 88% -14%, rgba(91, 155, 213, .16) 0%, transparent 62%),
    radial-gradient(620px 280px at 4% 42%, rgba(212, 175, 55, .08) 0%, transparent 58%),
    var(--snow);
  color: var(--ink);
  overflow-x: hidden;
}

/* === 品牌封面 === */
.page-about .about-hero {
  position: relative;
  padding: 44px 0 0;
  overflow: hidden;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 340px;
  height: 340px;
  background: linear-gradient(120deg, transparent 20%, rgba(212, 175, 55, .20) 44%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
}
.page-about .about-hero-copy {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin-top: 44px;
}
.page-about .about-hero-since {
  color: var(--red);
}
.page-about .about-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(34px, 5.8vw, 58px);
  line-height: 1.04;
  letter-spacing: .012em;
  margin: 14px 0 20px;
  color: var(--ink);
}
.page-about .about-hero-lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: #3d4352;
  max-width: 640px;
}
.page-about .about-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}
.page-about .about-hero-tags .tag {
  border: 2px solid var(--ink);
  background: var(--white);
  color: var(--ink);
  padding: 8px 14px;
}
.page-about .about-hero .btn-primary {
  margin-top: 28px;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(192, 48, 40, .25);
}
.page-about .about-hero-media {
  position: relative;
  margin-top: 48px;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}
.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 140px;
  max-height: 460px;
  object-fit: cover;
}
.page-about .about-hero-media::after {
  content: "CN PROFILE";
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 6px 12px;
  background: var(--navy);
  border: 2px solid var(--ink);
  color: var(--snow);
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: .1em;
}
.page-about .about-hero-vert {
  position: absolute;
  right: 18px;
  bottom: 18px;
  background: var(--navy);
  border: 2px solid var(--snow);
  color: rgba(247, 245, 240, .9);
  padding: 10px 8px;
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: .22em;
  writing-mode: vertical-rl;
}

/* === 品牌使命 === */
.page-about .about-mission {
  padding-top: 90px;
}
.page-about .about-mission-desc {
  max-width: 640px;
  margin: 24px 0 40px;
  font-size: 16px;
  line-height: 1.8;
  color: #444a58;
}
.page-about .about-mission-grid {
  display: grid;
  gap: 28px;
}
.page-about .about-mission-text p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}
.page-about .about-mission-cards {
  display: grid;
  gap: 16px;
}
.page-about .about-mission-cards .card {
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-1);
  margin: 0;
}
.page-about .about-mission-cards .card-accent {
  border-left: 6px solid var(--red);
}
.page-about .about-mission-cards .card-body {
  padding: 20px 22px;
}
.page-about .about-mission-cards .card-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: #4a5263;
}

/* === 关键数字 === */
.page-about .about-stats {
  padding-top: 90px;
}
.page-about .about-stats-bento {
  display: grid;
  gap: 16px;
  margin-top: 48px;
}
.page-about .about-stat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 2px solid var(--ink);
  background: var(--white);
  padding: 24px 22px;
  box-shadow: var(--shadow-1);
  margin: 0;
}
.page-about .about-stat-num {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(44px, 6vw, 66px);
  line-height: .9;
  letter-spacing: -.01em;
}
.page-about .about-stat-name {
  display: block;
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--navy);
}
.page-about .about-stat-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: #535b6c;
}
.page-about .about-stat-year {
  background: linear-gradient(135deg, var(--red) 0%, #a3261f 100%);
  color: var(--white);
  box-shadow: 6px 6px 0 rgba(192, 48, 40, .2);
}
.page-about .about-stat-year .about-stat-name,
.page-about .about-stat-team .about-stat-name {
  color: rgba(255, 255, 255, .94);
}
.page-about .about-stat-year .about-stat-desc,
.page-about .about-stat-team .about-stat-desc {
  color: rgba(255, 255, 255, .84);
}
.page-about .about-stat-league {
  border-top: 6px solid var(--gold);
}
.page-about .about-stat-team {
  background: var(--blue);
  color: var(--white);
  box-shadow: 6px 6px 0 rgba(91, 155, 213, .22);
}
.page-about .about-stat-month {
  border-top: 6px solid var(--red);
}
.page-about .about-stat-cal {
  border-top: 6px solid var(--blue);
}
.page-about .about-stat-sync {
  background: var(--navy);
  color: var(--snow);
  box-shadow: 6px 6px 0 rgba(27, 42, 74, .18);
}
.page-about .about-stat-sync .about-stat-name {
  color: var(--gold);
}
.page-about .about-stat-sync .about-stat-desc {
  color: rgba(247, 245, 240, .84);
}
.page-about .about-map {
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  margin: 0;
}
.page-about .about-map img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
}
.page-about .about-map-note {
  background: var(--navy);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-1);
  color: var(--snow);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
}
.page-about .about-map-note .plate-label {
  color: var(--gold);
}
.page-about .about-map-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 245, 240, .9);
}

/* === 发展里程碑 === */
.page-about .about-timeline-section {
  padding-top: 90px;
}
.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 28px;
  margin-top: 56px;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), var(--fog) 65%, var(--navy) 100%);
}
.page-about .about-tl-node {
  position: relative;
  padding: 0 0 0 44px;
}
.page-about .about-tl-dot {
  position: absolute;
  left: 0;
  top: 4px;
  width: 20px;
  height: 20px;
  background: var(--gold);
  border: 4px solid var(--navy);
  border-radius: 50%;
  animation: aboutTlPulse 3s ease-in-out infinite;
}
.page-about .about-tl-era {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 12px;
  background: var(--navy);
  color: var(--gold);
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.page-about .about-tl-node h3 {
  font-family: var(--font-heading);
  font-size: 24px;
  line-height: 1.15;
  margin: 0 0 8px;
  color: var(--ink);
}
.page-about .about-tl-node p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: #4a5263;
  max-width: 36ch;
}

/* === 服务承诺 === */
.page-about .about-commit {
  padding-top: 90px;
}
.page-about .about-commit-grid {
  display: grid;
  gap: 20px;
  margin-top: 48px;
}
.page-about .about-commit-side {
  display: grid;
  gap: 20px;
  align-content: start;
}
.page-about .about-commit-img {
  margin: 0;
}
.page-about .about-commit-img img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-1);
}
.page-about .about-commit-contact {
  background: var(--navy);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-2);
  color: var(--snow);
  margin: 0;
}
.page-about .about-commit-contact .card-meta {
  color: var(--gold);
}
.page-about .about-commit-contact .card-title {
  color: var(--white);
}
.page-about .about-commit-contact .card-body p {
  color: rgba(247, 245, 240, .86);
}
.page-about .about-commit-cards {
  display: grid;
  gap: 16px;
}
.page-about .about-commit-card {
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-1);
  margin: 0;
}
.page-about .about-commit-card .card-body {
  padding: 22px;
}
.page-about .about-commit-card .card-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: #464e5f;
}

/* === 延伸入口 CTA === */
.page-about .about-next {
  padding: 90px 0 96px;
}
.page-about .about-next-panel {
  position: relative;
  background: linear-gradient(120deg, var(--navy) 0%, #22407a 100%);
  border: 2px solid var(--ink);
  box-shadow: 10px 10px 0 rgba(27, 42, 74, .12);
  padding: 44px 28px;
  overflow: hidden;
}
.page-about .about-next-panel::before {
  content: "";
  position: absolute;
  left: -70px;
  bottom: -70px;
  width: 190px;
  height: 190px;
  border: 3px solid rgba(212, 175, 55, .25);
  border-radius: 50%;
}
.page-about .about-next-panel .plate-label {
  color: var(--gold);
}
.page-about .about-next-panel h2 {
  font-family: var(--font-heading);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.1;
  margin: 12px 0 10px;
  color: var(--white);
}
.page-about .about-next-panel > p {
  max-width: 520px;
  margin: 0;
  color: rgba(247, 245, 240, .78);
}
.page-about .about-next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.page-about .about-next-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border: 2px solid;
  font-family: var(--font-heading);
  font-size: 16px;
  letter-spacing: .03em;
  text-decoration: none;
  transition: transform .3s ease, box-shadow .3s ease;
}
.page-about .about-next-link:nth-child(1) {
  border-color: var(--gold);
  background: var(--gold);
  color: var(--ink);
  box-shadow: 4px 4px 0 rgba(212, 175, 55, .25);
}
.page-about .about-next-link:nth-child(2) {
  border-color: var(--snow);
  color: var(--snow);
}
.page-about .about-next-link:nth-child(3) {
  border-color: var(--red);
  background: var(--red);
  color: var(--white);
  box-shadow: 4px 4px 0 rgba(192, 48, 40, .3);
}
.page-about .about-next-link:nth-child(4) {
  border-color: var(--blue);
  color: var(--white);
}
.page-about .about-next-link:hover {
  transform: translateY(-3px);
}

/* === 动画 === */
@keyframes aboutTlPulse {
  0%, 100% { box-shadow: 0 0 0 5px rgba(212, 175, 55, .18); }
  50% { box-shadow: 0 0 0 10px rgba(212, 175, 55, .35); }
}

/* === 平板适配 === */
@media (min-width: 768px) {
  .page-about .about-mission-cards {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-mission-card-wide {
    grid-column: span 2;
  }
  .page-about .about-commit-cards {
    grid-template-columns: 1fr 1fr;
  }
}

/* === 桌面适配 === */
@media (min-width: 992px) {
  .page-about .about-hero-copy {
    margin-top: 56px;
  }
  .page-about .about-hero-lead {
    font-size: 17px;
  }
  .page-about .about-hero-media img {
    max-height: 520px;
  }
  .page-about .about-mission-grid {
    grid-template-columns: .9fr 1.1fr;
    gap: 44px;
  }
  .page-about .about-stats-bento {
    grid-template-columns: repeat(12, 1fr);
  }
  .page-about .about-stat-year { grid-column: span 5; }
  .page-about .about-stat-league { grid-column: span 3; }
  .page-about .about-stat-team { grid-column: span 4; }
  .page-about .about-stat-month { grid-column: span 4; }
  .page-about .about-stat-cal { grid-column: span 4; }
  .page-about .about-stat-sync { grid-column: span 4; }
  .page-about .about-map { grid-column: span 7; }
  .page-about .about-map-note { grid-column: span 5; }

  .page-about .about-timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
  }
  .page-about .about-timeline::before {
    left: 0;
    right: 0;
    top: 28px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--gold) 0%, var(--fog) 55%, var(--navy) 100%);
  }
  .page-about .about-tl-node {
    padding: 56px 24px 0 0;
  }
  .page-about .about-tl-dot {
    left: 0;
    top: 18px;
  }

  .page-about .about-commit-grid {
    grid-template-columns: 5fr 7fr;
    gap: 24px;
  }
  .page-about .about-next-panel {
    padding: 52px 44px;
  }
}