.about-main { padding-top: 72px; }
.about-hero { padding: 118px 0 92px; border-bottom: 1px solid var(--home-line); }
.about-hero h1 { margin: 0; max-width: 920px; font-size: clamp(54px, 7vw, 104px); line-height: .92; letter-spacing: -.065em; font-weight: 690; }
.about-hero h1 span { color: #9eacbe; font-weight: 480; }
.about-hero .home-copy { max-width: 780px; }
.about-jump { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 9px; }
.about-jump a { padding: 9px 12px; border: 1px solid var(--home-line); border-radius: 999px; color: var(--home-muted); text-decoration: none; font-size: 12px; }
.about-jump a:hover { color: var(--home-text); border-color: var(--home-line-strong); }

.about-section { padding: 108px 0; border-bottom: 1px solid var(--home-line); }
.about-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 90px; align-items: start; }
.about-copy-stack { display: grid; gap: 18px; }
.about-copy-stack p { margin: 0; color: var(--home-muted); font-size: 16px; line-height: 1.75; }
.about-detail-list { border-top: 1px solid var(--home-line-strong); }
.about-detail-row { display: grid; grid-template-columns: 190px 1fr; gap: 28px; padding: 24px 0; border-bottom: 1px solid var(--home-line); }
.about-detail-row strong { color: #dce5f2; font-size: 14px; font-weight: 640; }
.about-detail-row div { color: var(--home-muted); font-size: 14px; line-height: 1.65; }
.about-detail-row code { color: #c8d5e6; font: 600 12px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }

.about-stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 34px; }
.about-stat { padding: 24px; border: 1px solid var(--home-line-strong); border-radius: 15px; background: rgba(12,17,25,.48); }
.about-stat span { display: block; color: var(--home-faint); font: 650 9px/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .1em; text-transform: uppercase; }
.about-stat strong { display: block; margin-top: 11px; font-size: 22px; letter-spacing: -.03em; }
.about-stat p { margin: 10px 0 0; color: var(--home-muted); font-size: 12px; line-height: 1.55; }

.about-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.about-card { padding: 26px; border: 1px solid var(--home-line-strong); border-radius: 16px; background: rgba(12,17,25,.42); }
.about-card h3 { margin: 0; font-size: 22px; letter-spacing: -.035em; }
.about-card p { margin: 13px 0 0; color: var(--home-muted); font-size: 14px; line-height: 1.65; }

.about-access { padding: 108px 0 118px; }
.about-access-grid { display: grid; grid-template-columns: 1fr .8fr; gap: 80px; align-items: start; }
.about-price-note { border-top: 1px solid var(--home-line-strong); }
.about-price-note div { display: flex; justify-content: space-between; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--home-line); }
.about-price-note span { color: var(--home-muted); font-size: 14px; }
.about-price-note strong { font-size: 15px; }
.about-footnote { margin: 18px 0 0; color: var(--home-faint); font-size: 11px; line-height: 1.6; }

html[data-theme="light"] .about-stat,
html[data-theme="light"] .about-card { background: rgba(255,255,255,.45); }
html[data-theme="light"] .about-detail-row strong { color: #1f2937; }
html[data-theme="light"] .about-detail-row code { color: #334155; }

@media (max-width: 900px) {
  .about-grid, .about-access-grid { grid-template-columns: 1fr; gap: 42px; }
  .about-stat-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .about-hero { padding: 92px 0 70px; }
  .about-section, .about-access { padding: 78px 0; }
  .about-detail-row { grid-template-columns: 1fr; gap: 8px; }
  .about-card-grid { grid-template-columns: 1fr; }
}