/* =========================================
   서비스 소개(About Us) 페이지 스타일
   F1 다크 테마 기반 반응형 레이아웃
   ========================================= */

.about-page {
  max-width: 62rem;
  margin: 0 auto;
  padding: 2.5rem 1rem 4rem;
}

/* ── Hero ───────────────────────────────── */
.about-hero {
  border: 1px solid #303030;
  border-radius: .75rem;
  background:
    radial-gradient(circle at 15% 0%, rgba(225, 6, 0, .22), transparent 55%),
    #141414;
  padding: clamp(1.75rem, 5vw, 3rem);
  text-align: center;
}

.about-eyebrow {
  display: inline-block;
  margin-bottom: .85rem;
  padding: .3rem .75rem;
  border: 1px solid rgba(225, 6, 0, .5);
  border-radius: 999px;
  background: rgba(225, 6, 0, .12);
  color: #f87171;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.about-hero h1 {
  margin: 0 0 .85rem;
  color: #fff;
  font-size: clamp(1.75rem, 5vw, 2.6rem);
  line-height: 1.25;
}

.about-hero-lead {
  max-width: 44rem;
  margin: 0 auto;
  color: #d1d5db;
  font-size: clamp(.95rem, 2.2vw, 1.05rem);
  line-height: 1.75;
}

/* ── 통계 뱃지 ──────────────────────────── */
.about-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .6rem;
  margin-top: 1.75rem;
}

.about-stat-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 8.5rem;
  padding: .7rem 1rem;
  border: 1px solid #333;
  border-radius: .5rem;
  background: #0d0d0d;
}

.about-stat-value {
  color: #e10600;
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.2;
}

.about-stat-label {
  color: #9ca3af;
  font-size: .75rem;
  letter-spacing: .03em;
}

/* ── 섹션 공통 ──────────────────────────── */
.about-section {
  margin-top: 3rem;
}

.about-section h2 {
  margin: 0 0 .5rem;
  padding-left: .75rem;
  border-left: 3px solid #e10600;
  color: #fff;
  font-size: clamp(1.2rem, 3vw, 1.5rem);
}

.about-section-desc {
  margin: 0 0 1.5rem;
  color: #9ca3af;
  font-size: .9rem;
  line-height: 1.7;
}

/* ── 카드 그리드 ────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
}

.about-card {
  display: flex;
  flex-direction: column;
  padding: 1.4rem;
  border: 1px solid #303030;
  border-radius: .75rem;
  background: #161616;
  transition: border-color .2s ease, transform .2s ease;
}

.about-card:hover {
  border-color: rgba(225, 6, 0, .55);
  transform: translateY(-2px);
}

.about-card-icon {
  margin-bottom: .6rem;
  font-size: 1.6rem;
  line-height: 1;
}

.about-card h3 {
  margin: 0 0 .55rem;
  color: #fff;
  font-size: 1.05rem;
}

.about-card p {
  margin: 0;
  color: #d1d5db;
  font-size: .9rem;
  line-height: 1.7;
}

.about-card-link {
  margin-top: 1rem;
  color: #f87171;
  font-size: .85rem;
  font-weight: 600;
  text-decoration: none;
}

.about-card-link:hover {
  text-decoration: underline;
}

/* ── 데이터 방법론 리스트 ───────────────── */
.about-method-list {
  margin: 0;
  padding: 0;
  border: 1px solid #303030;
  border-radius: .75rem;
  background: #161616;
  list-style: none;
}

.about-method-list li {
  padding: 1.1rem 1.35rem;
  border-bottom: 1px solid #262626;
}

.about-method-list li:last-child {
  border-bottom: none;
}

.about-method-list strong {
  display: block;
  margin-bottom: .35rem;
  color: #fff;
  font-size: .95rem;
}

.about-method-list span {
  color: #d1d5db;
  font-size: .88rem;
  line-height: 1.7;
}

.about-source-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1rem;
}

.about-source-tag {
  padding: .3rem .7rem;
  border: 1px solid #3a3a3a;
  border-radius: 999px;
  background: #0d0d0d;
  color: #b0b0b0;
  font-size: .78rem;
}

/* ── Contact ────────────────────────────── */
.about-contact {
  padding: clamp(1.5rem, 4vw, 2.25rem);
  border: 1px solid rgba(225, 6, 0, .4);
  border-radius: .75rem;
  background: rgba(225, 6, 0, .08);
}

.about-contact p {
  margin: 0 0 1.25rem;
  color: #d1d5db;
  font-size: .92rem;
  line-height: 1.75;
}

.about-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.about-btn {
  padding: .65rem 1.25rem;
  border: 1px solid #e10600;
  border-radius: .5rem;
  background: #e10600;
  color: #fff;
  font-size: .88rem;
  font-weight: 700;
  text-decoration: none;
  transition: filter .2s ease, box-shadow .2s ease;
}

.about-btn:hover {
  filter: brightness(1.12);
}

.about-contact-email:hover {
  box-shadow: 0 0 .8rem rgba(225, 6, 0, .45);
}

.about-contact-email:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
  box-shadow: 0 0 0 .3rem rgba(225, 6, 0, .4);
}

.about-contact-email-address {
  margin: 1rem 0 0;
  color: #b0b0b0;
  font-size: .84rem;
}

.about-contact-email-address a {
  color: #fff;
  font-weight: 700;
  text-underline-offset: .18em;
}

.about-contact-email-address a:hover,
.about-contact-email-address a:focus-visible {
  color: #f87171;
}

.disclaimer-text {
  margin: 1.5rem auto 0;
  padding: 0 1rem;
  color: #9ca3af;
  font-size: .82rem;
  line-height: 1.65;
  text-align: center;
}

.about-btn-outline {
  background: transparent;
  border-color: #4b5563;
  color: #e5e7eb;
}

.about-btn-outline:hover {
  border-color: #e10600;
  color: #fff;
}

@media (max-width: 480px) {
  .about-stat-badge {
    flex: 1 1 8rem;
    min-width: 0;
  }

  .about-contact-actions .about-btn {
    flex: 1 1 100%;
    text-align: center;
  }
}