:root {
  --sc-about-pink: #ec5f78;
  --sc-about-ink: #2c2729;
  --sc-about-muted: #756d70;
  --sc-about-line: rgba(67, 48, 55, .12);
  --sc-about-surface: rgba(255, 255, 255, .9);
}

.sc-about-page {
  background: #fff8fa;
  color: var(--sc-about-ink);
}

.sc-about-shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(52px, 8vw, 112px) 0 100px;
}

.sc-about-hero {
  padding: clamp(32px, 6vw, 72px);
  border: 1px solid rgba(236, 95, 120, .16);
  border-radius: 36px;
  background:
    radial-gradient(circle at 92% 8%, rgba(236, 95, 120, .2), transparent 32%),
    linear-gradient(135deg, #fff 0%, #fff7f9 100%);
  box-shadow: 0 28px 90px rgba(88, 55, 66, .1);
}

.sc-about-kicker,
.sc-about-label {
  color: var(--sc-about-pink);
  font-size: .74rem;
  font-weight: 850;
  letter-spacing: .2em;
}

.sc-about-hero h1 {
  margin: 12px 0 20px;
  color: var(--sc-about-ink);
  font-size: clamp(2.45rem, 7vw, 5.6rem);
  font-weight: 900;
  letter-spacing: -.06em;
  line-height: .98;
}

.sc-about-lead {
  max-width: 900px;
  margin: 0;
  color: #4d4447;
  font-size: clamp(1rem, 1.7vw, 1.3rem);
  line-height: 1.9;
}

.sc-about-boundary,
.sc-about-source-note {
  max-width: 900px;
  margin: 18px 0 0 !important;
  color: var(--sc-about-muted);
  font-size: .9rem !important;
  line-height: 1.8;
}

.sc-about-stats {
  display: grid;
  margin-top: 34px;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sc-about-stat {
  display: flex;
  min-width: 0;
  align-items: baseline;
  justify-content: space-between;
  padding: 18px 20px;
  border: 1px solid rgba(236, 95, 120, .14);
  border-radius: 18px;
  background: rgba(255, 255, 255, .8);
  color: var(--sc-about-ink);
  text-decoration: none;
}

.sc-about-stat strong { color: var(--sc-about-pink); font-size: 1.45rem; }
.sc-about-stat span { color: var(--sc-about-muted); font-size: .86rem; font-weight: 700; }

.sc-about-toc {
  display: flex;
  margin: 22px 0 0;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 14px 16px;
  border: 1px solid var(--sc-about-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, .82);
  scrollbar-width: none;
}

.sc-about-toc::-webkit-scrollbar { display: none; }
.sc-about-toc strong, .sc-about-toc a { flex: 0 0 auto; white-space: nowrap; }
.sc-about-toc strong { margin-right: 6px; color: var(--sc-about-ink); font-size: .88rem; }
.sc-about-toc a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--sc-about-muted);
  font-size: .82rem;
  font-weight: 700;
  text-decoration: none;
}
.sc-about-toc a:hover { background: rgba(236, 95, 120, .1); color: var(--sc-about-pink); }

.sc-about-section {
  scroll-margin-top: 96px;
  margin-top: 22px;
  padding: clamp(28px, 5vw, 56px);
  border: 1px solid var(--sc-about-line);
  border-radius: 30px;
  background: var(--sc-about-surface);
  box-shadow: 0 22px 70px rgba(73, 52, 59, .07);
}

.sc-about-section h2 {
  margin: 10px 0 24px;
  color: var(--sc-about-ink);
  font-size: clamp(1.7rem, 4vw, 3rem);
  font-weight: 880;
  letter-spacing: -.045em;
  line-height: 1.08;
}

.sc-about-section > p {
  margin: 0;
  color: var(--sc-about-muted);
  font-size: clamp(.96rem, 1.4vw, 1.08rem);
  line-height: 1.9;
}

.sc-about-answer {
  padding-left: 18px;
  border-left: 3px solid var(--sc-about-pink);
  color: #51474a !important;
  font-weight: 650;
}

.sc-about-facts {
  display: grid;
  margin: 30px 0 0;
  border-top: 1px solid var(--sc-about-line);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sc-about-facts > div {
  display: flex;
  min-width: 0;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 0;
  border-bottom: 1px solid var(--sc-about-line);
}
.sc-about-facts > div:nth-child(odd) { padding-right: 24px; }
.sc-about-facts > div:nth-child(even) { padding-left: 24px; }
.sc-about-facts dt { color: #9a8e92; font-size: .86rem; font-weight: 700; }
.sc-about-facts dd { margin: 0; color: var(--sc-about-ink); font-weight: 850; text-align: right; }

.sc-about-reasons {
  display: grid;
  margin-top: 28px;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.sc-about-reasons article {
  padding: 22px;
  border: 1px solid rgba(236, 95, 120, .12);
  border-radius: 20px;
  background: #fff9fb;
}
.sc-about-reasons h3 { margin: 0 0 10px; color: var(--sc-about-ink); font-size: 1rem; font-weight: 850; }
.sc-about-reasons p { margin: 0; color: var(--sc-about-muted); font-size: .9rem; line-height: 1.75; }

.sc-about-unknown-grid {
  display: grid;
  margin-top: 28px;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.sc-about-unknown-grid span {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-radius: 16px;
  background: #f8f3f5;
  color: var(--sc-about-muted);
  font-size: .86rem;
}
.sc-about-unknown-grid strong { color: var(--sc-about-ink); font-size: .83rem; text-align: right; }

.sc-about-actions { display: flex; margin-top: 28px; flex-wrap: wrap; gap: 10px; }
.sc-about-actions a {
  padding: 12px 18px;
  border: 1px solid rgba(236, 95, 120, .24);
  border-radius: 999px;
  color: var(--sc-about-pink);
  font-size: .88rem;
  font-weight: 800;
  text-decoration: none;
}
.sc-about-actions a.is-primary { border-color: var(--sc-about-pink); background: var(--sc-about-pink); color: #fff; }

.sc-about-platforms {
  display: grid;
  margin: 28px 0 0;
  padding: 0;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  list-style: none;
}
.sc-about-platforms a {
  display: grid;
  align-items: center;
  gap: 4px 12px;
  padding: 16px 18px;
  border: 1px solid var(--sc-about-line);
  border-radius: 16px;
  color: var(--sc-about-ink);
  grid-template-columns: minmax(0, 1fr) auto;
  text-decoration: none;
}
.sc-about-platforms strong { font-size: .94rem; }
.sc-about-platforms span { overflow: hidden; color: var(--sc-about-muted); font-size: .82rem; text-overflow: ellipsis; white-space: nowrap; }
.sc-about-platforms b { color: var(--sc-about-pink); grid-column: 2; grid-row: 1 / span 2; }

.sc-about-faq details { border-top: 1px solid var(--sc-about-line); }
.sc-about-faq details:last-child { border-bottom: 1px solid var(--sc-about-line); }
.sc-about-faq summary {
  padding: 18px 32px 18px 0;
  color: var(--sc-about-ink);
  cursor: pointer;
  font-weight: 820;
  list-style: none;
  position: relative;
}
.sc-about-faq summary::-webkit-details-marker { display: none; }
.sc-about-faq summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 4px;
  color: var(--sc-about-pink);
  font-size: 1.4rem;
  transform: translateY(-50%);
}
.sc-about-faq details[open] summary::after { content: "−"; }
.sc-about-faq details p { max-width: 900px; margin: -4px 0 20px; color: var(--sc-about-muted); font-size: .94rem; line-height: 1.8; }

body.dark-mode.sc-about-page {
  --sc-about-ink: #f7f1f3;
  --sc-about-muted: rgba(255, 255, 255, .68);
  --sc-about-line: rgba(255, 255, 255, .1);
  --sc-about-surface: rgba(35, 28, 31, .92);
  background: #181416;
}
body.dark-mode .sc-about-hero {
  border-color: rgba(236, 95, 120, .18);
  background: radial-gradient(circle at 92% 8%, rgba(236, 95, 120, .18), transparent 32%), linear-gradient(135deg, #2b2326 0%, #211b1d 100%);
  box-shadow: 0 28px 90px rgba(0, 0, 0, .24);
}
body.dark-mode .sc-about-lead, body.dark-mode .sc-about-answer { color: rgba(255, 255, 255, .78) !important; }
body.dark-mode .sc-about-stat, body.dark-mode .sc-about-toc { background: rgba(35, 28, 31, .9); }
body.dark-mode .sc-about-reasons article, body.dark-mode .sc-about-unknown-grid span { background: rgba(255, 255, 255, .04); }

@media (max-width: 720px) {
  .sc-about-shell { width: min(100% - 24px, 1120px); padding: 22px 0 92px; }
  .sc-about-hero, .sc-about-section { border-radius: 24px; }
  .sc-about-stats, .sc-about-facts, .sc-about-reasons, .sc-about-unknown-grid, .sc-about-platforms { grid-template-columns: 1fr; }
  .sc-about-facts > div:nth-child(odd), .sc-about-facts > div:nth-child(even) { padding-right: 0; padding-left: 0; }
  .sc-about-actions a { text-align: center; width: 100%; }
}