.page-about {
  --about-coral-soft: #FBEDE3;
  --about-navy-soft: #E9EDF5;
  --about-yellow-soft: #FDE8B0;
  --about-green-soft: #EDF5E3;
  --about-orange-soft: #FFE7C2;
  --about-purple-soft: #F1E3F4;
}

.page-about .about-hero {
  background: repeating-linear-gradient(135deg, transparent 0 14px, rgba(62, 39, 35, .02) 14px 28px), var(--bg-warm);
  border-radius: 22px;
  padding: 26px 18px 20px;
  box-shadow: var(--shadow-sm);
}

.page-about .about-hero-inner {
  max-width: var(--container);
  margin: 0 auto;
}

.page-about .about-hero-kicker {
  margin-top: 12px;
  color: var(--coral);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.page-about .about-hero h1 {
  margin: 8px 0 10px;
  color: var(--ink);
  font-family: var(--font-head);
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.22;
}

.page-about .about-hero-desc {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-about .about-hero-btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--coral);
  color: #fff;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: background .2s ease, box-shadow .2s ease;
}

.page-about .about-hero-btn:hover {
  background: #d4482f;
  box-shadow: var(--shadow-md);
}

.page-about .about-hero-btn--ghost {
  background: transparent;
  color: var(--navy);
  border: 1.5px solid var(--navy);
  box-shadow: none;
}

.page-about .about-hero-btn--ghost:hover {
  background: var(--navy);
  color: #fff;
}

.page-about .about-hero-media {
  margin: 20px 0 4px;
}

.page-about .about-hero-media img,
.page-about .about-cat-media img,
.page-about .about-version-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 16px;
  border: 1px solid rgba(62, 39, 35, .1);
  box-shadow: var(--shadow-sm);
  object-fit: cover;
}

.page-about .about-stats {
  margin-top: 24px;
  padding: 28px 18px 30px;
  border-radius: 22px;
  background: repeating-linear-gradient(45deg, rgba(229, 83, 60, .045) 0 2px, transparent 2px 12px), var(--bg-warm);
}

.page-about .about-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.page-about .about-stat {
  position: relative;
  min-height: 128px;
  padding: 18px 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(62, 39, 35, .07);
  box-shadow: 0 3px 0 rgba(62, 39, 35, .04);
  overflow: hidden;
}

.page-about .about-stat::after {
  content: "";
  position: absolute;
  right: -14px;
  top: -14px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .5);
  pointer-events: none;
}

.page-about .about-stat::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: currentColor;
  opacity: .55;
}

.page-about .about-stat--coral {
  background: var(--about-coral-soft);
  color: var(--coral);
}

.page-about .about-stat--navy {
  background: var(--about-navy-soft);
  color: var(--navy);
}

.page-about .about-stat--yellow {
  background: var(--about-yellow-soft);
  color: #b8860b;
}

.page-about .about-stat--green {
  background: var(--about-green-soft);
  color: #558b2f;
}

.page-about .about-stat--orange {
  background: var(--about-orange-soft);
  color: #e08c00;
}

.page-about .about-stat--purple {
  background: var(--about-purple-soft);
  color: #7b1fa2;
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-head);
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.page-about .about-stat-num--long {
  font-size: 23px;
  letter-spacing: 0;
  line-height: 1.2;
}

.page-about .about-stat-unit {
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.page-about .about-stat-label {
  display: block;
  margin-top: 12px;
  color: var(--ink);
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
}

.page-about .about-stat-sub {
  display: block;
  margin-top: 4px;
  color: var(--ink);
  font-family: var(--font-note);
  font-size: 12px;
  opacity: .65;
}

.page-about .about-categories {
  margin-top: 24px;
  padding: 28px 18px 30px;
  border-radius: 22px;
  background: var(--bg-panel);
}

.page-about .about-cat-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.page-about .about-cat-card {
  padding: 20px 16px 18px;
  border-radius: 16px;
  border: 1px solid rgba(62, 39, 35, .08);
  border-top-width: 4px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}

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

.page-about .about-cat-card[data-tone="coral"] {
  background: var(--about-coral-soft);
  border-top-color: var(--coral);
}

.page-about .about-cat-card[data-tone="navy"] {
  background: var(--about-navy-soft);
  border-top-color: var(--navy);
}

.page-about .about-cat-card[data-tone="yellow"] {
  background: var(--about-yellow-soft);
  border-top-color: #ff9800;
}

.page-about .about-cat-card[data-tone="green"] {
  background: var(--about-green-soft);
  border-top-color: var(--green);
}

.page-about .about-cat-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.page-about .about-cat-name {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
}

.page-about .about-cat-count {
  flex-shrink: 0;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .85);
  box-shadow: var(--shadow-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-cat-desc {
  margin: 10px 0 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.75;
  opacity: .85;
}

.page-about .about-cat-card .tag-group,
.page-about .about-version-card .tag-group {
  margin-top: 12px;
  flex-wrap: wrap;
}

.page-about .about-cat-card .tag,
.page-about .about-version-card .tag {
  display: inline-block;
  margin: 0 6px 6px 0;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .85);
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.4;
}

.page-about .tag[data-tone="orange"] {
  background: rgba(255, 152, 0, .16);
  border-color: rgba(255, 152, 0, .35);
  color: #a86a00;
}

.page-about .tag[data-tone="blue"] {
  background: rgba(33, 150, 243, .13);
  border-color: rgba(33, 150, 243, .32);
  color: #1565c0;
}

.page-about .tag[data-tone="green"] {
  background: rgba(76, 175, 80, .14);
  border-color: rgba(76, 175, 80, .32);
  color: #2e7d32;
}

.page-about .about-cat-media {
  margin-top: 18px;
}

.page-about .about-batch {
  margin-top: 24px;
  padding: 28px 18px 30px;
  border-radius: 22px;
  background: radial-gradient(circle at 85% 10%, rgba(255, 255, 255, .14), transparent 38%), var(--navy);
  color: #f4f1ea;
}

.page-about .about-batch .section-kicker {
  color: #f9c74f;
}

.page-about .about-batch .section-title,
.page-about .about-batch .section-note {
  color: #fff;
}

.page-about .about-batch .section-note {
  opacity: .85;
}

.page-about .about-week {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(96px, 1fr);
  gap: 8px;
  margin-top: 18px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.page-about .about-week-item {
  padding: 14px 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .14);
}

.page-about .about-week-item--publish {
  background: var(--coral);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}

.page-about .about-week-day {
  display: block;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 800;
  color: #fff;
}

.page-about .about-week-task {
  display: block;
  margin-top: 6px;
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.55;
  color: rgba(255, 255, 255, .9);
}

.page-about .about-week-item .badge {
  display: inline-block;
  margin-top: 10px;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .24);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.page-about .about-batch-bottom {
  max-width: var(--container);
  margin: 22px auto 0;
}

.page-about .about-batch-note {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  border-left: 4px solid var(--coral);
  background: rgba(255, 255, 255, .06);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 13px;
}

.page-about .about-batch-note strong {
  font-family: var(--font-head);
  font-size: 14px;
  color: #fff;
}

.page-about .about-batch-note span {
  color: rgba(255, 255, 255, .85);
}

.page-about .about-batch-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 14px;
}

.page-about .about-batch-dot {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .12);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: #dce3f2;
}

.page-about .about-batch-dot.is-current {
  background: var(--coral);
  border-color: transparent;
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.page-about .about-batch-more {
  align-self: center;
  padding: 6px 4px;
  font-family: var(--font-note);
  font-size: 12px;
  color: rgba(255, 255, 255, .7);
}

.page-about .about-versions {
  margin-top: 24px;
  padding: 28px 18px 30px;
  border-radius: 22px;
  background: repeating-linear-gradient(135deg, rgba(62, 39, 35, .03) 0 2px, transparent 2px 10px), var(--bg-accent);
}

.page-about .about-timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 18px;
}

.page-about .about-version-card {
  background: #fff9f0;
  border: 1px solid rgba(62, 39, 35, .09);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.page-about .about-version-card summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 14px;
  cursor: pointer;
  list-style: none;
}

.page-about .about-version-card summary::-webkit-details-marker {
  display: none;
}

.page-about .about-version-card summary::-webkit-details-marker {
  list-style: none;
}

.page-about .about-version-badge {
  flex-shrink: 0;
  padding: 5px 10px;
  border-radius: 8px;
  background: var(--navy);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
}

.page-about .about-version-card[open] .about-version-badge,
.page-about .about-version-card.is-open .about-version-badge {
  background: var(--coral);
}

.page-about .about-version-name {
  color: var(--ink);
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 800;
}

.page-about .about-version-card p {
  margin: 0;
  padding: 0 14px 16px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.75;
  opacity: .88;
}

.page-about .about-version-card .tag-group {
  padding: 0 14px 16px;
  margin-top: -6px;
}

.page-about .about-timeline-rule {
  max-width: 760px;
  margin: 18px auto 0;
  text-align: center;
}

.page-about .about-timeline-rule svg {
  display: block;
  width: 100%;
  height: 28px;
}

.page-about .about-version-media {
  max-width: 620px;
  margin: 12px auto 0;
}

.page-about .about-archives {
  margin-top: 24px;
  padding: 28px 18px 30px;
  border-radius: 22px;
  background: var(--bg-warm);
}

.page-about .about-table-wrap {
  margin-top: 18px;
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid rgba(62, 39, 35, .08);
  box-shadow: var(--shadow-sm);
}

.page-about .about-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  background: var(--bg-panel);
  font-family: var(--font-body);
  font-size: 13px;
}

.page-about .about-table th {
  padding: 11px 12px;
  background: var(--navy);
  color: #fff;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  text-align: left;
  white-space: nowrap;
}

.page-about .about-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(62, 39, 35, .08);
  color: var(--ink);
  line-height: 1.6;
  vertical-align: top;
}

.page-about .about-table tbody tr:nth-child(even) td {
  background: rgba(43, 58, 103, .045);
}

.page-about .about-table tbody tr:hover td {
  background: rgba(229, 83, 60, .06);
}

.page-about .about-table tbody tr:last-child td {
  border-bottom: none;
}

.page-about .about-archive-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--bg-panel);
  border: 1px dashed rgba(43, 58, 103, .28);
  font-family: var(--font-note);
  font-size: 13px;
  color: var(--ink);
}

.page-about .about-archive-footer a {
  margin-left: auto;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--coral);
  color: #fff;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: background .2s ease;
}

.page-about .about-archive-footer a:hover {
  background: #d4482f;
}

.page-about .about-exit {
  margin-top: 24px;
}

.page-about .about-exit-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 18px;
}

.page-about .about-exit-card {
  display: block;
  padding: 18px 16px 20px;
  border-radius: 16px;
  background: var(--bg-panel);
  border: 1px solid rgba(62, 39, 35, .08);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease;
}

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

.page-about .about-exit-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--coral);
}

.page-about .about-exit-card strong {
  display: block;
  margin-top: 8px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .about-exit-card span:last-child {
  display: block;
  margin-top: 6px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink);
  opacity: .72;
}

.page-about .section-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .section-kicker {
  margin: 0;
  color: var(--coral);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
}

.page-about .section-title {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 800;
  line-height: 1.3;
}

.page-about .section-note {
  margin: 0;
  max-width: 820px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.7;
  opacity: .72;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink);
  opacity: .65;
}

.page-about .breadcrumb a {
  color: var(--ink);
  text-decoration: none;
  transition: color .2s;
}

.page-about .breadcrumb a:hover {
  color: var(--coral);
}

.page-about .breadcrumb-sep {
  opacity: .5;
}

.page-about [data-reveal] {
  will-change: transform, opacity;
}

.page-about [data-reveal].is-revealed {
  animation: about-rise .5s ease both;
}

@keyframes about-rise {
  from {
    transform: translateY(14px);
    opacity: 0;
  }
  to {
    transform: none;
    opacity: 1;
  }
}

@media (min-width: 640px) {
  .page-about .about-stat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-exit-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-hero h1 {
    font-size: 34px;
  }

  .page-about .about-version-name {
    font-size: 17px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-stat-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-week {
    grid-auto-columns: 1fr;
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-timeline {
    position: relative;
  }

  .page-about .about-timeline::before {
    content: "";
    position: absolute;
    top: 28px;
    left: 6%;
    right: 6%;
    height: 2px;
    background: rgba(43, 58, 103, .18);
    z-index: 0;
  }

  .page-about .about-version-card {
    position: relative;
    z-index: 1;
  }

  .page-about .about-version-card summary {
    padding: 16px 13px;
  }

  .page-about .about-version-card p,
  .page-about .about-version-card .tag-group {
    padding-left: 13px;
    padding-right: 13px;
  }

  .page-about .about-hero-text {
    padding-right: 2vw;
  }
}