.page-about {
  --about-mint: #D2E8C5;
  --about-mint-light: #F0F7EC;
  --about-ink: #1A1A1A;
  --about-deep: #1B4D3E;
  background:
    radial-gradient(ellipse at 15% 0%, rgba(210, 232, 197, 0.5) 0%, transparent 55%),
    linear-gradient(180deg, var(--about-mint-light) 0%, #FFFFFF 60%, var(--about-mint-light) 100%);
  overflow-x: hidden;
}

/* Breadcrumb */
.page-about .breadcrumb {
  padding-top: 32px;
}
.page-about .breadcrumb ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
}
.page-about .breadcrumb a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-about .breadcrumb a:hover {
  color: #FFFFFF;
}
.page-about .breadcrumb li + li::before {
  content: "·";
  margin-right: 8px;
  color: rgba(255, 255, 255, 0.4);
}
.page-about .breadcrumb li[aria-current="page"] {
  color: #FFFFFF;
  font-weight: 600;
}

/* Hero */
.page-about .about-hero {
  position: relative;
  background: linear-gradient(145deg, #1B4D3E 0%, #0E3A2C 60%, #00A651 130%);
  color: #FFFFFF;
  padding-bottom: 88px;
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -20%;
  width: 80%;
  height: 180%;
  background: radial-gradient(circle, rgba(0, 166, 81, 0.35) 0%, transparent 70%);
  pointer-events: none;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 32px;
  background: linear-gradient(135deg, transparent 45%, #00A651 45%, #00A651 55%, transparent 55%);
  background-size: 24px 24px;
  opacity: 0.15;
  pointer-events: none;
}
.page-about .about-hero__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 72px 24px 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  position: relative;
  z-index: 1;
}
.page-about .about-hero__tagline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #FFC700;
}
.page-about .about-hero__tagline::before {
  content: "";
  width: 28px;
  height: 3px;
  background: #E30613;
  border-radius: 2px;
}
.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(34px, 6vw, 58px);
  font-weight: 900;
  line-height: 1.08;
  margin: 0 0 24px;
  letter-spacing: -0.02em;
}
.page-about .about-hero h1 br {
  display: none;
}
.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  max-width: 520px;
  margin: 0 0 32px;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero__actions .btn--ghost {
  border-color: rgba(255, 255, 255, 0.4);
  color: #FFFFFF;
}
.page-about .about-hero__actions .btn--ghost:hover {
  border-color: #FFFFFF;
  background: rgba(255, 255, 255, 0.08);
}
.page-about .about-hero__visual {
  position: relative;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.page-about .about-hero__big-num {
  font-family: var(--font-mono);
  font-size: clamp(48px, 8vw, 88px);
  font-weight: 800;
  line-height: 1;
  color: rgba(255, 255, 255, 0.12);
  position: absolute;
  top: 24px;
  right: 24px;
}
.page-about .about-hero__divider {
  width: 72px;
  height: 4px;
  background: linear-gradient(90deg, #E30613, #F58220, #FFC700);
  border-radius: 4px;
  margin-bottom: 28px;
}
.page-about .about-hero__count {
  font-family: var(--font-mono);
  font-size: clamp(64px, 10vw, 108px);
  font-weight: 800;
  line-height: 1;
  color: #FFFFFF;
}
.page-about .about-hero__count span {
  font-size: 0.38em;
  font-weight: 600;
  color: #FFC700;
  margin-left: 6px;
  vertical-align: super;
}
.page-about .about-hero__curve {
  position: absolute;
  right: 24px;
  bottom: 24px;
  width: 180px;
  height: 90px;
  opacity: 0.7;
}
.page-about .about-hero__pitch {
  height: 24px;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.1) 40%, rgba(255, 255, 255, 0.1) 60%, transparent 60%);
  background-size: 16px 16px;
  opacity: 0.1;
  border-bottom: 2px solid rgba(255, 255, 255, 0.08);
}

/* Section Head */
.page-about .section-head {
  margin-bottom: 48px;
}
.page-about .section-title {
  font-family: var(--font-head);
  font-size: 30px;
  font-weight: 800;
  margin: 12px 0 8px;
  letter-spacing: -0.01em;
}
.page-about .section-title::before {
  content: "//";
  color: #E30613;
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 0.8em;
}
.page-about .section-subtitle {
  font-size: 15px;
  color: #5A6B5F;
  margin: 0;
}

/* Story Origin */
.page-about .about-origin {
  padding: 80px 0 64px;
  position: relative;
  background: linear-gradient(180deg, var(--about-mint-light) 0%, #F7FBF5 100%);
}
.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}
.page-about .about-origin__copy p {
  font-size: 16px;
  line-height: 1.75;
  color: #2E3D35;
  margin: 0 0 18px;
}
.page-about .about-origin__copy blockquote {
  margin: 28px 0;
  padding: 16px 20px;
  border-left: 4px solid #00A651;
  background: rgba(0, 166, 81, 0.06);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: #1B4D3E;
  border-radius: 0 12px 12px 0;
}
.page-about .about-origin__conclusion {
  font-weight: 600;
  color: #1B4D3E;
}
.page-about .about-origin__media {
  position: relative;
}
.page-about .about-origin__img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  box-shadow: var(--shadow-float);
  display: block;
}
.page-about .about-origin__badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: #00A651;
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 8px 16px;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(0, 166, 81, 0.35);
}

/* Timeline */
.page-about .about-timeline {
  padding: 72px 0 88px;
  background: #FFFFFF;
  position: relative;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: linear-gradient(90deg, #00A651 0%, #D2E8C5 40%, #FFFFFF 100%);
  opacity: 0.4;
}
.page-about .timeline {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
  padding-top: 16px;
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, #00A651 0%, #D2E8C5 60%, rgba(210, 232, 197, 0) 100%);
  border-radius: 4px;
}
.page-about .timeline__ball {
  position: absolute;
  left: 20px;
  top: 0;
  transform: translateX(-50%) translateY(-50%);
  background: #FFFFFF;
  border-radius: 50%;
  padding: 2px;
  box-shadow: 0 4px 12px rgba(0, 166, 81, 0.25);
  z-index: 1;
}
.page-about .timeline__item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 40px;
}
.page-about .timeline__item:last-child {
  padding-bottom: 16px;
}
.page-about .timeline__marker {
  position: absolute;
  left: 0;
  top: 4px;
  width: 48px;
  text-align: center;
}
.page-about .timeline__dot {
  display: block;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 4px solid #00A651;
  box-shadow: 0 0 0 2px rgba(0, 166, 81, 0.3);
  margin: 0 auto 6px;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.page-about .timeline__item:hover .timeline__dot {
  box-shadow: 0 0 0 6px rgba(0, 166, 81, 0.2);
  transform: scale(1.15);
}
.page-about .timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: #00A651;
}
.page-about .timeline__content {
  background: #FFFFFF;
  border: 1px solid rgba(0, 166, 81, 0.12);
  border-radius: 16px;
  padding: 20px 22px;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.page-about .timeline__item:hover .timeline__content {
  box-shadow: 0 12px 28px rgba(27, 77, 62, 0.1);
  transform: translateY(-2px);
}
.page-about .timeline__content h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
  margin: 0 0 8px;
  color: #1B4D3E;
}
.page-about .timeline__content p {
  font-size: 15px;
  line-height: 1.65;
  color: #4A5C4E;
  margin: 0;
}
.page-about .timeline__photo {
  position: relative;
  margin: 8px 0 32px;
  padding-left: 56px;
}
.page-about .timeline__photo img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 16px 40px rgba(27, 77, 62, 0.18);
  display: block;
}

/* Certificates */
.page-about .about-cert {
  padding: 80px 0;
  background: linear-gradient(150deg, #12372D 0%, #1B4D3E 60%, #00A651 180%);
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
}
.page-about .about-cert::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 166, 81, 0.12) 0%, transparent 70%);
  pointer-events: none;
}
.page-about .about-cert:not(.about-cert ~ *) .section-head .map-tag {
  background: rgba(255, 255, 255, 0.12);
  color: #FFC700;
}
.page-about .about-cert .section-title {
  color: #FFFFFF;
}
.page-about .about-cert .section-title::before {
  color: #FFC700;
}
.page-about .about-cert .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}
.page-about .about-cert .map-tag {
  background: rgba(255, 255, 255, 0.1);
  color: #D2E8C5;
}
.page-about .cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 920px;
  margin: 0 auto;
}
.page-about .cert-card {
  perspective: 1000px;
  cursor: pointer;
  height: 220px;
}
.page-about .cert-card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.6s var(--ease-out);
}
.page-about .cert-card:hover .cert-card__inner,
.page-about .cert-card:focus-within .cert-card__inner,
.page-about .cert-card:focus .cert-card__inner {
  transform: rotateY(180deg);
}
.page-about .cert-card__front,
.page-about .cert-card__back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 20px;
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}
.page-about .cert-card__back {
  transform: rotateY(180deg);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.24);
}
.page-about .cert-card__medal {
  font-size: 30px;
  display: block;
  margin-bottom: 12px;
}
.page-about .cert-card__front h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  margin: 0 0 6px;
  text-align: center;
}
.page-about .cert-card__front p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin: 0;
  text-align: center;
}
.page-about .cert-card__back p {
  font-size: 15px;
  line-height: 1.7;
  color: #FFFFFF;
  text-align: center;
  margin: 0;
}
.page-about .cert-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 920px;
  margin: 40px auto 0;
}
.page-about .cert-stat {
  background: rgba(255, 255, 255, 0.07);
  border-radius: 16px;
  padding: 20px 16px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.page-about .cert-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 800;
  color: #FFC700;
  line-height: 1;
  margin-bottom: 6px;
}
.page-about .cert-stat__label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}

/* Promise */
.page-about .about-promise {
  padding: 80px 0 64px;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--about-mint-light) 100%);
}
.page-about .promise-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}
.page-about .promise-card {
  background: #FFFFFF;
  border-radius: 18px;
  padding: 28px 24px;
  border: 1px solid rgba(0, 166, 81, 0.1);
  box-shadow: 0 6px 20px rgba(27, 77, 62, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.page-about .promise-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(27, 77, 62, 0.12);
}
.page-about .promise-card__icon {
  display: inline-block;
  font-size: 28px;
  margin-bottom: 14px;
}
.page-about .promise-card h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
  margin: 0 0 10px;
  color: #1B4D3E;
}
.page-about .promise-card p {
  font-size: 15px;
  line-height: 1.65;
  color: #4A5C4E;
  margin: 0;
}
.page-about .about-promise__media {
  position: relative;
  margin-top: 48px;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 48px rgba(27, 77, 62, 0.2);
}
.page-about .about-promise__media img {
  width: 100%;
  height: auto;
  display: block;
}
.page-about .about-promise__media-caption {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(27, 77, 62, 0.85);
  color: #FFFFFF;
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  gap: 12px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* CTA */
.page-about .about-cta {
  padding: 24px 0 80px;
  background: var(--about-mint-light);
}
.page-about .about-cta__card {
  max-width: 960px;
  margin: 0 auto;
  background: linear-gradient(135deg, #FFFFFF 0%, #F7FBF5 100%);
  border-radius: 28px;
  padding: 44px 32px;
  text-align: center;
  border: 1px solid rgba(0, 166, 81, 0.12);
  box-shadow: var(--shadow-float);
  position: relative;
  overflow: hidden;
}
.page-about .about-cta__card::before {
  content: "";
  position: absolute;
  top: -40px;
  left: -40px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(0, 166, 81, 0.08);
  pointer-events: none;
}
.page-about .about-cta__card::after {
  content: "";
  position: absolute;
  bottom: -30px;
  right: -30px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(227, 6, 19, 0.05);
  pointer-events: none;
}
.page-about .about-cta__card h2 {
  font-family: var(--font-head);
  font-size: 26px;
  font-weight: 800;
  margin: 0 0 12px;
  color: #1B4D3E;
}
.page-about .about-cta__card p {
  font-size: 16px;
  color: #4A5C4E;
  max-width: 520px;
  margin: 0 auto 28px;
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  position: relative;
  z-index: 1;
}

/* Desktop Breakpoints */
@media (min-width: 640px) {
  .page-about .promise-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .page-about .about-hero {
    padding-bottom: 120px;
  }
  .page-about .about-hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
    padding: 88px 24px 0;
    gap: 64px;
  }
  .page-about .about-hero h1 br {
    display: block;
  }
  .page-about .about-hero__visual {
    min-height: 320px;
    padding: 48px;
  }
  .page-about .about-hero__curve {
    width: 240px;
    height: 120px;
  }
  .page-about .about-origin {
    padding: 100px 0 80px;
  }
  .page-about .about-origin__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
  }
  .page-about .section-title {
    font-size: 36px;
  }
  .page-about .about-timeline {
    padding: 96px 0;
  }
  .page-about .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }
  .page-about .timeline__ball {
    left: 50%;
  }
  .page-about .timeline__item {
    width: 50%;
    padding-left: 0;
  }
  .page-about .timeline__item--left {
    padding-right: 56px;
    text-align: right;
  }
  .page-about .timeline__item--right {
    margin-left: 50%;
    padding-left: 56px;
  }
  .page-about .timeline__marker {
    width: auto;
  }
  .page-about .timeline__item--left .timeline__marker {
    left: auto;
    right: -24px;
  }
  .page-about .timeline__item--right .timeline__marker {
    left: -24px;
  }
  .page-about .timeline__item--left .timeline__content {
    margin-right: auto;
  }
  .page-about .timeline__photo {
    padding-left: 0;
    margin: 8px 0 40px;
  }
  .page-about .cert-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .page-about .cert-card {
    height: 240px;
  }
  .page-about .about-cert {
    padding: 100px 0;
  }
  .page-about .cert-stats {
    gap: 24px;
  }
  .page-about .about-promise {
    padding: 100px 0 80px;
  }
  .page-about .promise-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  .page-about .about-cta {
    padding-bottom: 100px;
  }
  .page-about .about-cta__card {
    padding: 56px 64px;
  }
  .page-about .about-cta__card h2 {
    font-size: 30px;
  }
}