.page-about {
  background: var(--yk-bg);
  color: var(--yk-ink);
  font-family: var(--yk-font-serif);
}

/* ==== Hero ==== */
.page-about .about-hero {
  background:
    radial-gradient(ellipse at 85% 15%, rgba(138, 43, 226, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 15% 85%, rgba(255, 20, 147, 0.15) 0%, transparent 55%),
    var(--yk-dark);
  color: var(--yk-white);
  padding: 44px 0 60px;
  position: relative;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 55%;
  height: 100%;
  background: linear-gradient(135deg, transparent 30%, rgba(255, 107, 53, 0.1) 65%, rgba(138, 43, 226, 0.25) 100%);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero .yunkai-breadcrumb,
.page-about .about-hero .yunkai-breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-about .about-hero-kicker {
  font-family: var(--yk-font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--yk-orange);
  display: block;
  margin-bottom: 12px;
}

.page-about .about-hero h1 {
  font-family: var(--yk-font-sans);
  font-weight: 900;
  font-size: 32px;
  line-height: 1.22;
  margin: 0 0 16px;
  letter-spacing: 0.01em;
}

.page-about .about-hero-lead {
  font-family: var(--yk-font-serif);
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.86);
  max-width: 620px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-hero-aside {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-left: 4px solid var(--yk-orange);
  border-radius: 4px;
  padding: 22px 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 14px;
}

.page-about .about-hero-stat-label {
  font-family: var(--yk-font-sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.6);
  display: block;
  margin-bottom: 6px;
}

.page-about .about-hero-stat-num {
  font-family: var(--yk-font-sans);
  font-weight: 900;
  font-size: 24px;
  line-height: 1.15;
  color: var(--yk-orange);
  display: block;
  word-break: break-word;
}

.page-about .about-hero-stat-num--sm {
  font-size: 15px;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

/* ==== Shared page elements ==== */
.page-about .about-eyebrow {
  font-family: var(--yk-font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--yk-orange);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.page-about .about-eyebrow::before {
  content: "";
  width: 14px;
  height: 2px;
  background: linear-gradient(90deg, var(--yk-orange), var(--yk-magenta));
  flex-shrink: 0;
}

.page-about .about-media-wrap {
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--yk-shadow-md);
}

.page-about .about-media-wrap img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ==== Brand story ==== */
.page-about .about-story {
  padding: 64px 0 40px;
}

.page-about .about-story-grid {
  display: grid;
  gap: 32px;
}

.page-about .about-story-copy h2,
.page-about .about-team-copy h2,
.page-about .about-local-copy h2 {
  font-family: var(--yk-font-sans);
  font-weight: 900;
  font-size: 28px;
  line-height: 1.3;
  color: var(--yk-dark);
  margin-bottom: 18px;
}

.page-about .about-story-copy p {
  font-family: var(--yk-font-serif);
  font-size: 15px;
  line-height: 1.9;
  color: #444;
  margin-bottom: 14px;
}

.page-about .about-story-media {
  display: flex;
  align-items: center;
}

.page-about .about-text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--yk-font-sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--yk-orange-deep);
  text-decoration: none;
  margin-top: 6px;
  transition: color 0.2s ease;
}

.page-about .about-text-link span {
  transition: transform 0.2s ease;
}

.page-about .about-text-link:hover {
  color: var(--yk-purple);
}

.page-about .about-text-link:hover span {
  transform: translateX(4px);
}

/* ==== Milestones ==== */
.page-about .about-milestone {
  background: var(--yk-dark);
  color: #fff;
  padding: 68px 0 76px;
  position: relative;
  overflow: hidden;
}

.page-about .about-milestone::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--yk-orange), var(--yk-purple), var(--yk-magenta));
  z-index: 2;
}

.page-about .about-milestone::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 80% 100%, rgba(138, 43, 226, 0.18) 0%, transparent 50%),
    radial-gradient(ellipse at 10% 10%, rgba(255, 107, 53, 0.08) 0%, transparent 40%);
  pointer-events: none;
}

.page-about .about-section-head {
  position: relative;
  z-index: 1;
  margin-bottom: 44px;
}

.page-about .about-section-kicker {
  font-family: var(--yk-font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--yk-orange);
  display: block;
  margin-bottom: 12px;
}

.page-about .about-section-head h2 {
  font-family: var(--yk-font-sans);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.2;
  color: var(--yk-white);
  margin-bottom: 10px;
}

.page-about .about-section-head p {
  font-family: var(--yk-font-serif);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 520px;
}

.page-about .about-timeline {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
}

.page-about .about-timeline-item {
  position: relative;
  padding-left: 26px;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 4px;
  bottom: -26px;
  width: 2px;
  background: linear-gradient(180deg, var(--yk-orange), rgba(255, 107, 53, 0.15));
}

.page-about .about-timeline-item:last-child::before {
  display: none;
}

.page-about .about-timeline-dot {
  position: absolute;
  left: 0;
  top: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--yk-orange);
  border: 3px solid var(--yk-dark);
  box-shadow: 0 0 0 2px rgba(255, 107, 53, 0.35), 0 0 14px rgba(255, 107, 53, 0.3);
  transform: translateX(-50%);
  transition: transform 0.2s ease;
}

.page-about .about-timeline-year {
  font-family: var(--yk-font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--yk-orange);
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}

.page-about .about-timeline-content {
  transition: transform 0.2s ease;
}

.page-about .about-timeline-content h3 {
  font-family: var(--yk-font-sans);
  font-weight: 700;
  font-size: 18px;
  color: #fff;
  margin-bottom: 6px;
}

.page-about .about-timeline-content p {
  font-family: var(--yk-font-serif);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
}

.page-about .about-milestone-media {
  position: relative;
  z-index: 1;
  margin-top: 44px;
  display: grid;
  gap: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  padding: 16px;
}

.page-about .about-milestone-media .about-media-wrap {
  box-shadow: none;
}

.page-about .about-milestone-media img {
  max-width: 240px;
}

.page-about .about-milestone-note {
  font-family: var(--yk-font-serif);
  font-size: 13px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.68);
  border-left: 3px solid var(--yk-orange);
  padding-left: 14px;
  margin: 0;
}

/* ==== Team ==== */
.page-about .about-team {
  padding: 64px 0 40px;
}

.page-about .about-team-grid {
  display: grid;
  gap: 32px;
}

.page-about .about-team-copy p {
  font-family: var(--yk-font-serif);
  font-size: 15px;
  line-height: 1.9;
  color: #444;
  margin-bottom: 16px;
}

.page-about .about-team-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-team-points li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--yk-ink);
}

.page-about .about-team-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 2px;
  background: linear-gradient(90deg, var(--yk-orange), var(--yk-purple));
}

/* ==== Certifications ==== */
.page-about .about-cert {
  background: var(--yk-white);
  padding: 64px 0;
}

.page-about .about-cert-head {
  margin-bottom: 36px;
}

.page-about .about-cert-head h2 {
  font-family: var(--yk-font-sans);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.2;
  color: var(--yk-dark);
  margin-bottom: 10px;
}

.page-about .about-cert-head p {
  font-family: var(--yk-font-serif);
  font-size: 15px;
  line-height: 1.8;
  color: #666;
  max-width: 520px;
  margin: 0;
}

.page-about .about-cert-grid {
  display: grid;
  gap: 20px;
}

.page-about .about-cert-card {
  background: var(--yk-white);
  border: 1px solid var(--yk-line);
  border-radius: 4px;
  padding: 28px 24px;
  position: relative;
  box-shadow: var(--yk-shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-cert-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--yk-orange), var(--yk-purple));
  border-radius: 4px 0 0 4px;
}

.page-about .about-cert-icon {
  font-family: var(--yk-font-sans);
  font-size: 26px;
  line-height: 1;
  color: var(--yk-orange);
  display: block;
  margin-bottom: 16px;
}

.page-about .about-cert-card h3 {
  font-family: var(--yk-font-sans);
  font-weight: 700;
  font-size: 18px;
  color: var(--yk-dark);
  margin-bottom: 10px;
}

.page-about .about-cert-card p {
  font-family: var(--yk-font-serif);
  font-size: 14px;
  line-height: 1.8;
  color: var(--yk-gray);
  margin: 0;
}

/* ==== Localized service ==== */
.page-about .about-local {
  padding: 64px 0;
}

.page-about .about-local-card {
  background: linear-gradient(135deg, var(--yk-dark) 0%, var(--yk-mid) 100%);
  border-radius: 4px;
  padding: 36px 26px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-about .about-local-card::before {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -20%;
  width: 55%;
  height: 75%;
  background: linear-gradient(135deg, rgba(138, 43, 226, 0.35), rgba(255, 20, 147, 0.15));
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-local-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--yk-orange), var(--yk-magenta));
  pointer-events: none;
}

.page-about .about-local-copy {
  position: relative;
  z-index: 1;
}

.page-about .about-local-copy h2 {
  font-size: 26px;
  color: #fff;
}

.page-about .about-local-copy > p {
  font-family: var(--yk-font-serif);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 16px;
}

.page-about .about-local-note {
  font-family: var(--yk-font-sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.6);
}

.page-about .about-local-contact {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 4px;
  padding: 20px;
  display: grid;
  gap: 4px;
  position: relative;
  z-index: 1;
  margin-top: 24px;
}

.page-about .about-local-contact p {
  font-family: var(--yk-font-sans);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.page-about .about-local-contact p:last-of-type {
  border-bottom: none;
}

.page-about .about-contact-label {
  display: inline-block;
  min-width: 76px;
  color: rgba(255, 255, 255, 0.55);
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 12px;
}

.page-about .about-local-contact .yunkai-btn {
  margin-top: 14px;
  justify-self: start;
}

/* ==== Hover interactions ==== */
@media (hover: hover) {
  .page-about .about-timeline-item:hover .about-timeline-content {
    transform: translateX(4px);
  }

  .page-about .about-timeline-item:hover .about-timeline-dot {
    transform: translateX(-50%) scale(1.2);
  }

  .page-about .about-cert-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--yk-shadow-md);
  }
}

/* ==== Larger widths ==== */
@media (min-width: 480px) {
  .page-about .about-milestone-media {
    grid-template-columns: auto 1fr;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 56px 0 88px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-hero h1 {
    font-size: 42px;
  }

  .page-about .about-hero-lead {
    font-size: 18px;
  }

  .page-about .about-hero-aside {
    padding: 28px 26px;
  }

  .page-about .about-hero-stat-num {
    font-size: 28px;
  }

  .page-about .about-story {
    padding: 96px 0 56px;
  }

  .page-about .about-story-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    align-items: center;
  }

  .page-about .about-story-copy h2,
  .page-about .about-team-copy h2,
  .page-about .about-local-copy h2 {
    font-size: 34px;
  }

  .page-about .about-milestone {
    padding: 96px 0 104px;
  }

  .page-about .about-section-head h2 {
    font-size: 36px;
  }

  .page-about .about-section-head p {
    font-size: 16px;
  }

  .page-about .about-timeline {
    gap: 40px;
  }

  .page-about .about-timeline-content h3 {
    font-size: 20px;
  }

  .page-about .about-milestone-media {
    margin-top: 56px;
    padding: 24px;
    gap: 32px;
  }

  .page-about .about-team {
    padding: 88px 0 56px;
  }

  .page-about .about-team-grid {
    grid-template-columns: 0.92fr 1.08fr;
    gap: 64px;
    align-items: center;
  }

  .page-about .about-cert {
    padding: 96px 0;
  }

  .page-about .about-cert-head h2 {
    font-size: 36px;
  }

  .page-about .about-cert-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-cert-card:nth-child(2) {
    margin-top: 24px;
  }

  .page-about .about-local {
    padding: 88px 0 96px;
  }

  .page-about .about-local-card {
    padding: 56px 64px;
    display: grid;
    grid-template-columns: 0.55fr 0.45fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .about-local-copy h2 {
    font-size: 32px;
  }

  .page-about .about-local-contact {
    margin-top: 0;
  }
}