.page-about .section-tag {
  color: var(--c-gold);
}

.page-about .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about__hero {
  position: relative;
  padding: calc(var(--header-h) + 40px) 0 76px;
  background-color: var(--c-bg);
  background-image:
    linear-gradient(rgba(212, 175, 55, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  overflow: hidden;
}

.page-about__hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-gold) 0 38%, var(--c-red) 38% 72%, var(--c-yellow) 72% 100%);
  z-index: 2;
}

.page-about__hero-inner {
  position: relative;
  z-index: 1;
}

.page-about__hero-grid {
  display: grid;
  gap: 28px;
  margin-top: 40px;
}

.page-about__hero-index {
  align-self: end;
}

.page-about__hero-index .section-tag {
  color: var(--c-gold);
}

.page-about__hero-est {
  margin: 16px 0 0;
  font-family: var(--font-num);
  font-size: 1.3rem;
  letter-spacing: 0.22em;
  color: var(--c-gold);
}

.page-about__hero-main {
  position: relative;
  padding-left: 24px;
  border-left: 2px solid var(--c-gold);
}

.page-about__hero-main::before {
  content: "";
  position: absolute;
  top: -10px;
  left: -2px;
  width: 26px;
  height: 16px;
  border-top: 2px solid var(--c-gold);
}

.page-about__hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-size: clamp(2rem, 6vw, 3.6rem);
  color: var(--c-ivory);
}

.page-about__hero-lead {
  margin: 0 0 32px;
  max-width: 560px;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-gray);
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about__matrix {
  background: var(--c-carbon);
  border-bottom: 1px solid rgba(212, 175, 55, 0.22);
}

.page-about__matrix-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding-top: 14px;
  padding-bottom: 14px;
  font-family: var(--font-body);
  font-size: 0.85rem;
}

.page-about__matrix-label {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--c-gold);
}

.page-about__matrix-path {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  color: var(--c-gray);
}

.page-about__matrix-path a {
  color: var(--c-ivory);
  text-decoration: none;
  transition: color 0.3s var(--ease-out);
}

.page-about__matrix-path a:hover {
  color: var(--c-gold);
}

.page-about__matrix-path [aria-current="page"] {
  color: var(--c-gold);
}

.page-about__matrix-path i {
  font-style: normal;
  color: rgba(212, 175, 55, 0.5);
}

.page-about__matrix-meta {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--c-yellow);
}

.page-about__origin {
  position: relative;
  padding: 72px 0;
  background: var(--c-bg);
  color: var(--c-ivory);
}

.page-about__origin::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--c-gold), transparent 75%);
}

.page-about__origin-grid {
  display: grid;
  gap: 44px;
  align-items: center;
}

.page-about__origin-copy h2,
.page-about__section-head h2 {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.75rem, 3.6vw, 2.6rem);
  line-height: 1.2;
  color: var(--c-ivory);
}

.page-about__lead-text {
  margin: 0 0 18px;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-gray);
}

.page-about__plain-text {
  margin: 0 0 24px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--c-gray);
}

.page-about__origin-list {
  counter-reset: origin-item;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid rgba(212, 175, 55, 0.22);
}

.page-about__origin-list li {
  counter-increment: origin-item;
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 14px 0 14px 8px;
  border-bottom: 1px solid rgba(138, 141, 143, 0.16);
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--c-ivory);
}

.page-about__origin-list li::before {
  content: counter(origin-item, decimal-leading-zero);
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-weight: 800;
  color: var(--c-gold);
}

.page-about__figure {
  margin: 0;
}

.page-about__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--c-gray);
}

.page-about__milestones {
  position: relative;
  overflow: hidden;
  padding: 76px 0;
  background: var(--c-carbon);
  color: var(--c-ivory);
}

.page-about__timeline-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  pointer-events: none;
}

.page-about__timeline-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
  opacity: 0.12;
}

.page-about__milestones-content {
  position: relative;
  z-index: 1;
}

.page-about__section-head {
  margin-bottom: 44px;
}

.page-about__section-desc {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--c-gray);
}

.page-about__decade-band {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  margin: 0 0 44px;
  border-top: 1px solid rgba(212, 175, 55, 0.25);
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
  overflow-x: auto;
}

.page-about__decade-band span {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 1rem;
  color: var(--c-gold);
  white-space: nowrap;
}

.page-about__decade-band i {
  flex: 1 0 12px;
  height: 1px;
  min-width: 12px;
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.6), transparent);
}

.page-about__timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-gold) 0%, var(--c-red) 55%, var(--c-yellow) 100%);
}

.page-about__timeline-item {
  position: relative;
  padding: 0 0 52px 48px;
}

.page-about__timeline-item:last-child {
  padding-bottom: 0;
}

.page-about__timeline-marker {
  position: absolute;
  top: 10px;
  left: 4px;
  width: 14px;
  height: 14px;
  transform: rotate(45deg);
  background: var(--c-carbon);
  border: 2px solid var(--c-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.16);
}

.page-about__timeline-head {
  margin-bottom: 10px;
}

.page-about__timeline-year {
  display: block;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1;
  color: var(--c-gold);
}

.page-about__timeline-body h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.22rem;
  color: var(--c-ivory);
}

.page-about__timeline-body p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--c-gray);
}

.page-about__scale {
  position: relative;
  overflow: hidden;
  padding: 80px 0;
  background: var(--c-bg);
  color: var(--c-ivory);
}

.page-about__scale::before {
  content: "KAIYUN";
  position: absolute;
  top: 10px;
  right: -20px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(130px, 22vw, 240px);
  line-height: 1;
  letter-spacing: 0.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(212, 175, 55, 0.12);
  white-space: nowrap;
  pointer-events: none;
}

.page-about__scale-note {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 0 0 36px;
  padding: 12px 0;
  border-top: 1px solid rgba(244, 208, 63, 0.45);
  border-bottom: 1px solid rgba(230, 57, 70, 0.45);
}

.page-about__scale-note span {
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-about__scale-note span:first-child {
  color: var(--c-red);
}

.page-about__scale-note span:last-child {
  color: var(--c-yellow);
}

.page-about__scale-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-about__stat {
  position: relative;
  padding: 26px 22px 28px;
  background: rgba(28, 30, 32, 0.85);
  border: 1px solid rgba(212, 175, 55, 0.26);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: transform 0.35s var(--ease-out), border-color 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.page-about__stat:hover {
  transform: translateY(-6px);
  border-color: var(--c-gold);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.45);
}

.page-about__stat-number {
  display: block;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: clamp(2.6rem, 6vw, 3.6rem);
  line-height: 1;
  color: var(--c-gold);
}

.page-about__stat-suffix {
  margin-left: 2px;
  font-size: 0.6em;
  color: var(--c-gold-light);
}

.page-about__stat-label {
  display: block;
  margin-top: 12px;
  font-family: var(--font-head);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--c-ivory);
}

.page-about__credentials {
  padding: 80px 0;
  background: var(--c-ivory);
  color: var(--c-bg);
}

.page-about__credentials .section-tag {
  color: var(--c-red);
}

.page-about__credentials .page-about__section-head h2 {
  color: var(--c-bg);
}

.page-about__credentials .page-about__section-desc {
  color: #5A5D60;
}

.page-about__credentials-grid {
  display: grid;
  gap: 20px;
  margin-bottom: 24px;
}

.page-about__credential {
  padding: 34px 28px 36px;
  background: #FFFFFF;
  border: 1px solid rgba(10, 11, 13, 0.08);
  border-top: 4px solid var(--c-gold);
  box-shadow: 0 16px 36px rgba(10, 11, 13, 0.07);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.page-about__credential:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px rgba(10, 11, 13, 0.12);
}

.page-about__credential-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
}

.page-about__credential h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--c-bg);
}

.page-about__credential p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.75;
  color: #3E4145;
}

.page-about__credential-note {
  padding: 16px 20px;
  border-left: 3px solid var(--c-red);
  background: rgba(230, 57, 70, 0.06);
}

.page-about__credential-note p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--c-bg);
}

.page-about__mission {
  position: relative;
  overflow: hidden;
  padding: 80px 0;
  background:
    linear-gradient(115deg, transparent 0 62%, rgba(230, 57, 70, 0.08) 62.5%, transparent 63.2%),
    linear-gradient(115deg, transparent 0 78%, rgba(212, 175, 55, 0.1) 78.5%, transparent 79.2%),
    var(--c-bg);
  color: var(--c-ivory);
}

.page-about__mission-grid {
  display: grid;
  gap: 48px;
  align-items: center;
}

.page-about__mission-copy h2 {
  margin: 10px 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.75rem, 3.6vw, 2.6rem);
  line-height: 1.2;
  color: var(--c-ivory);
}

.page-about__mission-copy > p {
  margin: 0 0 18px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--c-gray);
}

.page-about__mission-points {
  counter-reset: mission-point;
  list-style: none;
  margin: 24px 0 30px;
  padding: 0;
}

.page-about__mission-points li {
  counter-increment: mission-point;
  position: relative;
  padding: 12px 0 12px 44px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--c-ivory);
  border-bottom: 1px solid rgba(138, 141, 143, 0.16);
}

.page-about__mission-points li::before {
  content: counter(mission-point, decimal-leading-zero);
  position: absolute;
  top: 12px;
  left: 0;
  font-family: var(--font-num);
  font-weight: 800;
  color: var(--c-gold);
}

.page-about__mission-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (min-width: 640px) {
  .page-about__scale-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .page-about__hero {
    padding-top: calc(var(--header-h) + 64px);
  }

  .page-about__hero-grid {
    grid-template-columns: 200px 1fr;
    gap: 48px;
    align-items: end;
    margin-top: 48px;
  }

  .page-about__matrix-meta {
    margin-left: auto;
  }

  .page-about__origin-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
  }

  .page-about__timeline-item {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 48px;
    padding-left: 0;
    padding-bottom: 64px;
  }

  .page-about__timeline-head {
    grid-column: 1;
    position: relative;
    margin-bottom: 0;
    padding-left: 48px;
  }

  .page-about__timeline-body {
    grid-column: 2;
  }

  .page-about__credentials-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .page-about__mission-grid {
    grid-template-columns: 0.95fr 1.05fr;
    gap: 64px;
  }
}

@media (min-width: 1000px) {
  .page-about__scale-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about__matrix-inner {
    gap: 20px 28px;
  }
}