.page-about {
  --about-green: #39FF14;
  --about-orange: #FF6F00;
  --about-cyan: #4FC3F7;
  --about-bg-deep: #060818;
  --about-bg-card: #1A1A2E;
  --about-line: #2A2F45;
  --about-text: #E8ECF4;
  --about-text-2: #A0A8B8;
  --about-paper: #F2E8D5;
  --about-amber: #FFD166;
  position: relative;
  background: var(--c-bg);
  color: var(--c-text);
  overflow-x: hidden;
}

/* ===== Hero ===== */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(40px, 7vw, 88px);
  padding-bottom: clamp(48px, 8vw, 96px);
  background: linear-gradient(135deg, var(--about-bg-deep) 0%, var(--c-bg) 55%, #0d1440 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 34%;
  height: 100%;
  background: linear-gradient(180deg, rgba(57, 255, 20, 0.04) 0%, rgba(255, 111, 0, 0.06) 100%);
  clip-path: polygon(28% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--about-green), var(--about-orange));
  opacity: 0.35;
  pointer-events: none;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 2;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 32px;
}

.page-about .about-hero__content {
  padding-right: 0;
}

.page-about .about-hero__lead {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  line-height: 1.7;
  color: var(--about-text-2);
  margin: 20px 0 28px;
  max-width: 560px;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.page-about .about-hero__visual {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  border: 1px solid var(--about-line);
}

.page-about .about-hero__visual::after {
  content: "// DATA_LAYER_ACTIVE";
  position: absolute;
  top: 16px;
  left: 16px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--about-green);
  background: rgba(6, 8, 24, 0.78);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(57, 255, 20, 0.3);
  pointer-events: none;
}

.page-about .about-hero__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== Diagonal separator between hero and origin ===== */
.page-about .about-diag {
  height: 48px;
  background: repeating-linear-gradient(-45deg, var(--c-bg) 0, var(--c-bg) 12px, var(--about-bg-deep) 12px, var(--about-bg-deep) 24px);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

/* ===== Section common ===== */
.page-about .section {
  padding: var(--section-space) 0;
  position: relative;
}

.page-about .section-kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--about-green);
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .section-kicker::after {
  content: "";
  display: inline-block;
  width: 36px;
  height: 1px;
  background: var(--about-green);
  opacity: 0.5;
}

.page-about .section-head h2 {
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 12px;
}

.page-about .section-desc {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--about-text-2);
  max-width: 640px;
  margin: 0;
}

/* ===== Origin ===== */
.page-about .about-origin {
  background: var(--c-bg);
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 36px;
}

.page-about .about-origin__text p {
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--about-text);
  margin: 0 0 16px;
}

.page-about .about-origin__text p:last-child {
  margin-bottom: 0;
}

.page-about .about-origin__panel {
  background: var(--about-bg-card);
  border-radius: 8px;
  border: 1px solid var(--about-line);
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.page-about .about-origin__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--about-green), var(--about-orange));
}

.page-about .about-origin__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.page-about .about-origin__list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(42, 47, 69, 0.6);
  font-size: 0.92rem;
  line-height: 1.5;
}

.page-about .about-origin__list li:last-child {
  border-bottom: none;
}

.page-about .about-origin__list-idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--about-cyan);
  flex-shrink: 0;
}

/* ===== Milestone ===== */
.page-about .about-milestone {
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--about-bg-deep) 100%);
}

.page-about .about-milestone__visual {
  margin: 36px 0 48px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--about-line);
}

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

.page-about .about-milestone__timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 32px;
}

.page-about .about-milestone__timeline::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--about-green) 0%, var(--about-orange) 60%, var(--about-amber) 100%);
  opacity: 0.6;
}

.page-about .about-milestone__item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 36px;
}

.page-about .about-milestone__item:last-child {
  padding-bottom: 0;
}

.page-about .about-milestone__marker {
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--about-bg-card);
  border: 2px solid var(--about-green);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--about-green);
}

.page-about .about-milestone__item--current .about-milestone__marker {
  border-color: var(--about-orange);
  background: var(--about-orange);
  color: #0B1026;
  box-shadow: 0 0 0 4px rgba(255, 111, 0, 0.15);
}

.page-about .about-milestone__card {
  background: rgba(26, 26, 46, 0.6);
  border: 1px solid var(--about-line);
  border-radius: 8px;
  padding: 18px 20px;
  transition: border-color 240ms ease, box-shadow 240ms ease;
}

.page-about .about-milestone__card:hover {
  border-color: rgba(57, 255, 20, 0.4);
  box-shadow: 0 0 0 1px rgba(57, 255, 20, 0.2), 0 8px 24px rgba(0, 0, 0, 0.2);
}

.page-about .about-milestone__item--current .about-milestone__card {
  border-color: rgba(255, 111, 0, 0.35);
  background: rgba(255, 111, 0, 0.06);
}

.page-about .about-milestone__card h3 {
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 6px;
  line-height: 1.4;
}

.page-about .about-milestone__card p {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--about-text-2);
  margin: 0;
}

.page-about .about-milestone__tag {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 3px;
  background: rgba(79, 195, 247, 0.12);
  color: var(--about-cyan);
  border: 1px solid rgba(79, 195, 247, 0.2);
}

.page-about .about-milestone__item--current .about-milestone__tag {
  background: rgba(255, 111, 0, 0.12);
  color: var(--about-orange);
  border-color: rgba(255, 111, 0, 0.25);
}

/* ===== Data ===== */
.page-about .about-data {
  background: var(--c-bg);
}

.page-about .about-data__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 36px 0 48px;
}

.page-about .about-data__card {
  background: var(--about-bg-card);
  border-radius: 8px;
  border: 1px solid var(--about-line);
  padding: 24px 20px;
  position: relative;
  overflow: hidden;
  transition: transform 240ms ease, border-color 240ms ease;
}

.page-about .about-data__card:hover {
  transform: translateY(-4px);
  border-color: rgba(57, 255, 20, 0.3);
}

.page-about .about-data__card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--about-green), transparent);
  opacity: 0.6;
}

.page-about .about-data__num {
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--about-amber);
  margin: 0;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.page-about .about-data__unit {
  font-size: 0.7em;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--about-text-2);
  margin-left: 4px;
}

.page-about .about-data__label {
  font-size: 0.82rem;
  color: var(--about-text-2);
  margin: 8px 0 0;
  line-height: 1.4;
}

.page-about .about-data__maintenance {
  background: linear-gradient(135deg, var(--about-bg-deep) 0%, var(--about-bg-card) 100%);
  border: 1px solid var(--about-line);
  border-radius: 12px;
  padding: 28px 24px;
}

.page-about .about-data__maintenance-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.page-about .about-data__maintenance-head .panel__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--about-green);
  margin: 0;
}

.page-about .about-data__maintenance-head h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0;
}

.page-about .about-data__maintenance-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-data__maintenance-text {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--about-text-2);
  margin: 0;
}

.page-about .about-data__maintenance-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-data__maintenance-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  color: var(--about-text);
  font-weight: 500;
}

.page-about .about-data__maintenance-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--about-green);
  flex-shrink: 0;
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.5);
}

/* ===== Team ===== */
.page-about .about-team {
  background: var(--about-bg-deep);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-top: 36px;
}

.page-about .about-team__visual {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--about-line);
}

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

.page-about .about-team__stat {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding: 16px 20px;
  background: rgba(57, 255, 20, 0.08);
  border-radius: 8px;
  border-left: 3px solid var(--about-green);
}

.page-about .about-team__stat-num {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--about-green);
  line-height: 1;
  letter-spacing: -0.03em;
}

.page-about .about-team__stat-label {
  font-size: 0.86rem;
  color: var(--about-text-2);
  line-height: 1.4;
}

.page-about .about-team__roles {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .about-team__role {
  background: rgba(26, 26, 46, 0.7);
  border: 1px solid var(--about-line);
  border-radius: 8px;
  padding: 20px;
  transition: border-color 240ms ease;
}

.page-about .about-team__role:hover {
  border-color: rgba(79, 195, 247, 0.3);
}

.page-about .about-team__role-name {
  font-size: 0.98rem;
  font-weight: 700;
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .about-team__role-name::before {
  content: "//";
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--about-cyan);
}

.page-about .about-team__role p {
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--about-text-2);
  margin: 0;
}

/* ===== Vision ===== */
.page-about .about-vision {
  background: var(--c-bg);
  position: relative;
  overflow: hidden;
}

.page-about .about-vision::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 50%;
  height: 180%;
  background: radial-gradient(ellipse at center, rgba(57, 255, 20, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.page-about .about-vision__inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.page-about .about-vision .section-kicker {
  justify-content: center;
}

.page-about .about-vision .section-kicker::after {
  display: none;
}

.page-about .about-vision h2 {
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  font-weight: 800;
  margin: 0 0 16px;
}

.page-about .about-vision__lead {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  line-height: 1.8;
  color: var(--about-text-2);
  margin: 0 0 36px;
}

.page-about .about-vision__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  align-items: center;
}

/* ===== Reveal animation fallback ===== */
.page-about [data-reveal] {
  opacity: 1;
}

/* ===== Tablet ===== */
@media (min-width: 640px) {
  .page-about .about-data__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .page-about .about-data__maintenance-grid {
    grid-template-columns: 2fr 1fr;
    gap: 32px;
  }

  .page-about .about-team__roles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}

/* ===== Desktop ===== */
@media (min-width: 1024px) {
  .page-about .about-hero {
    padding-top: clamp(56px, 8vw, 104px);
  }

  .page-about .about-hero__grid {
    grid-template-columns: 5fr 7fr;
    gap: 56px;
    align-items: center;
    margin-top: 40px;
  }

  .page-about .about-hero__content {
    padding-left: 12px;
  }

  .page-about .about-hero__lead {
    font-size: 1.15rem;
    margin: 24px 0 30px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: 7fr 5fr;
    gap: 56px;
    align-items: start;
  }

  .page-about .about-origin__text p {
    font-size: 1rem;
  }

  .page-about .about-milestone__timeline {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0;
    position: relative;
  }

  .page-about .about-milestone__timeline::before {
    left: 0;
    right: 0;
    top: 19px;
    bottom: auto;
    width: 100%;
    height: 2px;
  }

  .page-about .about-milestone__item {
    padding-left: 0;
    padding-top: 52px;
    padding-bottom: 0;
    padding-right: 16px;
  }

  .page-about .about-milestone__item:last-child {
    padding-right: 0;
  }

  .page-about .about-milestone__marker {
    left: 0;
    top: 0;
  }

  .page-about .about-milestone__card {
    height: 100%;
    display: flex;
    flex-direction: column;
  }

  .page-about .about-milestone__tag {
    margin-top: auto;
    align-self: flex-start;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .about-team__roles {
    grid-template-columns: 1fr;
  }
}