/* ========== BI 페이지 전용 스타일 (bi-content 범위 한정) ========== */
.bi-page *, .bi-page *::before, .bi-page *::after { box-sizing: border-box; }
.bi-page {
  font-family: system-ui, -apple-system, 'Pretendard', 'Noto Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #222;
  -webkit-font-smoothing: antialiased;
}
.bi-page img { max-width: 100%; height: auto; display: block; }
.bi-page h1, .bi-page h2, .bi-page h3, .bi-page h4, .bi-page p { margin: 0; }
.bi-page ul { margin: 0; padding: 0; list-style: none; }

.bi-page .bi-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
@media (min-width: 768px) { .bi-page .bi-inner { padding: 0 30px; } }
@media (min-width: 1024px) { .bi-page .bi-inner { padding: 0 40px; } }

/* 섹션 공통 */
.bi-page .section { padding: 56px 0; }
@media (min-width: 768px) { .bi-page .section { padding: 80px 0; } }
.bi-page .section-title {
  font-size: 24px; font-weight: 800; letter-spacing: -0.5px;
  text-align: center; margin-bottom: 8px; color: #222;
}
.bi-page .section-sub {
  text-align: center; color: #666; font-size: 15px; margin-bottom: 40px;
}
@media (min-width: 768px) {
  .bi-page .section-title { font-size: 32px; margin-bottom: 12px; }
  .bi-page .section-sub { font-size: 16px; margin-bottom: 56px; }
}

/* 1. 히어로 */
.bi-page .hero {
  background: linear-gradient(135deg, #0066B3 0%, #3399D9 60%, #66B8E8 100%);
  color: #fff; padding: 60px 0 80px; overflow: hidden;
}
.bi-page .hero .inner {
  display: flex; flex-direction: column; align-items: center; gap: 32px; text-align: center;
}
.bi-page .hero h1 { font-size: 28px; line-height: 1.3; font-weight: 800; letter-spacing: -0.5px; }
.bi-page .hero h1 strong { color: #FFB800; }
.bi-page .hero .hero-sub { font-size: 16px; opacity: 0.92; max-width: 480px; }
.bi-page .hero .hero-visual { display: flex; align-items: flex-end; gap: 0; justify-content: center; }
.bi-page .hero .hero-visual img {
  max-height: 220px; width: auto;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.2));
}
.bi-page .hero .hero-visual .obaksa { transform: translateX(10px); }
.bi-page .hero .hero-visual .gogocat { max-height: 140px; transform: translateX(-10px) translateY(-8px); }
@media (min-width: 768px) {
  .bi-page .hero { padding: 96px 0 120px; }
  .bi-page .hero .inner { flex-direction: row; justify-content: space-between; text-align: left; gap: 48px; }
  .bi-page .hero .hero-text { flex: 1 1 50%; }
  .bi-page .hero h1 { font-size: 44px; }
  .bi-page .hero .hero-sub { font-size: 18px; margin-top: 20px; }
  .bi-page .hero .hero-visual { flex: 1 1 50%; justify-content: flex-end; }
  .bi-page .hero .hero-visual img { max-height: 320px; }
  .bi-page .hero .hero-visual .gogocat { max-height: 200px; }
}

/* 2. 탄생 스토리 */
.bi-page .story .steps { display: flex; flex-direction: column; gap: 24px; }
.bi-page .step-card {
  background: #fff; border: 1px solid #e6e6e6; border-radius: 16px;
  padding: 28px 24px; position: relative; transition: transform .2s ease;
}
.bi-page .step-card .step-num {
  display: inline-block; padding: 4px 12px; background: #FFB800; color: #fff;
  border-radius: 999px; font-size: 12px; font-weight: 800; letter-spacing: 0.5px; margin-bottom: 14px;
}
.bi-page .step-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 10px; color: #0066B3; }
.bi-page .step-card p { color: #444; font-size: 15px; }
@media (min-width: 768px) {
  .bi-page .story .steps { flex-direction: row; gap: 20px; }
  .bi-page .step-card { flex: 1; }
  .bi-page .step-card h3 { font-size: 22px; }
}

/* 3. 오박사 프로필 */
.bi-page .profile { background: #F7F7F7; }
.bi-page .profile .wrap {
  display: flex; flex-direction: column; gap: 32px; align-items: center;
}
.bi-page .profile .photo { flex-shrink: 0; width: 220px; max-width: 80%; }
.bi-page .profile .photo img {
  border-radius: 50%; border: 6px solid #FFB800; background: #fff;
  aspect-ratio: 1 / 1; object-fit: contain; padding: 10px;
}
.bi-page .profile .info { flex: 1; width: 100%; }
.bi-page .profile .info dl {
  display: grid; grid-template-columns: 80px 1fr;
  row-gap: 10px; column-gap: 12px; margin: 0 0 24px; font-size: 15px;
}
.bi-page .profile .info dt { color: #666; font-weight: 700; }
.bi-page .profile .info dd { margin: 0; color: #222; }
.bi-page .profile .motto {
  background: #0066B3; color: #fff; padding: 20px 24px; border-radius: 12px;
  text-align: center; font-weight: 800; font-size: 17px; letter-spacing: -0.3px;
  box-shadow: 0 4px 16px rgba(0,102,179,0.2);
}
.bi-page .profile .motto small {
  display: block; font-size: 12px; font-weight: 500; opacity: 0.8; margin-top: 6px; letter-spacing: 0.5px;
}
@media (min-width: 768px) {
  .bi-page .profile .wrap { flex-direction: row; align-items: flex-start; gap: 56px; }
  .bi-page .profile .photo { width: 280px; }
  .bi-page .profile .info dl { font-size: 16px; }
  .bi-page .profile .motto { font-size: 20px; text-align: left; }
}

/* 4. BI 심볼 */
.bi-page .bi-symbol { background: #F7F7F7; text-align: center; }
.bi-page .bi-symbol .logo-big {
  margin: 0 auto 32px; width: 180px; max-width: 60%;
  background: #fff; padding: 28px; border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}
.bi-page .bi-symbol .logo-big img { width: 100%; height: auto; }
.bi-page .bi-meanings {
  display: grid; grid-template-columns: 1fr; gap: 16px;
  max-width: 900px; margin: 0 auto;
}
.bi-page .meaning-card {
  background: #fff; padding: 24px; border-radius: 14px;
  text-align: left; border: 1px solid #e6e6e6;
}
.bi-page .meaning-card .icon { font-size: 32px; margin-bottom: 10px; }
.bi-page .meaning-card h4 { font-size: 17px; font-weight: 800; margin-bottom: 6px; color: #0066B3; }
.bi-page .meaning-card p { color: #555; font-size: 14px; }
@media (min-width: 768px) {
  .bi-page .bi-meanings { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .bi-page .bi-symbol .logo-big { width: 240px; }
  .bi-page .meaning-card { text-align: center; }
}

/* 5. 고고캣 */
.bi-page .gogocat-section { background: #fff; }
.bi-page .gogocat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.bi-page .gogocat-card {
  background: #F7F7F7; border-radius: 14px; padding: 16px 12px 18px;
  text-align: center; transition: transform .2s ease;
}
.bi-page .gogocat-card:hover { transform: translateY(-2px); }
.bi-page .gogocat-card .thumb {
  aspect-ratio: 1 / 1; background: #fff; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 10px; overflow: hidden;
}
.bi-page .gogocat-card .thumb img { max-width: 85%; max-height: 85%; object-fit: contain; }
.bi-page .gogocat-card .name { font-weight: 800; font-size: 14px; color: #0066B3; margin-bottom: 2px; }
.bi-page .gogocat-card .desc { font-size: 12px; color: #666; line-height: 1.5; }
@media (min-width: 768px) {
  .bi-page .gogocat-grid { grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .bi-page .gogocat-card .name { font-size: 15px; }
  .bi-page .gogocat-card .desc { font-size: 13px; }
}

/* 6. 지역별 고고캣 */
.bi-page .region-cats { background: #FFF8E1; }
.bi-page .region-grid {
  display: grid; grid-template-columns: 1fr; gap: 20px;
  max-width: 900px; margin: 0 auto;
}
.bi-page .region-card {
  background: #fff; border-radius: 20px; padding: 28px 24px;
  text-align: center; box-shadow: 0 6px 20px rgba(255,184,0,0.15);
}
.bi-page .region-card .thumb {
  width: 160px; height: 160px; margin: 0 auto 16px;
  background: #F7F7F7; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.bi-page .region-card .thumb img { max-width: 85%; max-height: 85%; object-fit: contain; }
.bi-page .region-card h3 { font-size: 20px; font-weight: 800; color: #0066B3; margin-bottom: 8px; }
.bi-page .region-card p { color: #444; font-size: 14px; }
.bi-page .region-more { text-align: center; margin-top: 32px; font-size: 15px; color: #666; }
.bi-page .region-more strong { color: #FF3B30; font-weight: 700; }
@media (min-width: 768px) {
  .bi-page .region-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .bi-page .region-card { padding: 40px 32px; }
  .bi-page .region-card .thumb { width: 200px; height: 200px; }
  .bi-page .region-card h3 { font-size: 24px; }
  .bi-page .region-card p { font-size: 15px; }
}

/* 7. 서비스 커버리지 */
.bi-page .coverage { background: #fff; }
.bi-page .coverage-timeline { max-width: 900px; margin: 0 auto; position: relative; }
.bi-page .coverage-step {
  background: #F7F7F7; border-left: 5px solid #FFB800; border-radius: 12px;
  padding: 20px 20px 20px 24px; margin-bottom: 16px; position: relative;
}
.bi-page .coverage-step:not(:last-child)::after {
  content: '↓'; display: block; text-align: center;
  color: #FFB800; font-size: 22px; font-weight: 800;
  margin-top: 16px; margin-bottom: -12px;
}
.bi-page .coverage-step .stage {
  display: inline-block; padding: 4px 10px; background: #FFB800; color: #fff;
  border-radius: 6px; font-size: 12px; font-weight: 800; margin-bottom: 8px;
}
.bi-page .coverage-step.done .stage { background: #0066B3; }
.bi-page .coverage-step.inprogress .stage { background: #FF3B30; }
.bi-page .coverage-step h4 { font-size: 17px; font-weight: 800; margin-bottom: 6px; color: #222; }
.bi-page .coverage-step p { color: #555; font-size: 14px; }
@media (min-width: 768px) {
  .bi-page .coverage-step { padding: 24px 28px 24px 32px; }
  .bi-page .coverage-step h4 { font-size: 19px; }
  .bi-page .coverage-step p { font-size: 15px; }
}

/* 7.5 서비스 라인업 */
.bi-page .services { background: #fff; }
.bi-page .services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.bi-page .service-card {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 24px 14px; background: #F7F7F7; border: 2px solid transparent;
  border-radius: 16px; color: inherit; text-decoration: none;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.bi-page .service-card:hover {
  transform: translateY(-3px); border-color: #FFB800; background: #fff;
  box-shadow: 0 8px 24px rgba(255,184,0,0.18);
}
.bi-page .service-card .icon { font-size: 40px; margin-bottom: 10px; }
.bi-page .service-card .name { font-weight: 800; font-size: 15px; color: #0066B3; margin-bottom: 6px; }
.bi-page .service-card .arrow { font-size: 12px; color: #999; font-weight: 700; }
.bi-page .service-card:hover .arrow { color: #FF3B30; }
@media (min-width: 768px) {
  .bi-page .services-grid { grid-template-columns: repeat(4, 1fr); gap: 16px; }
  .bi-page .service-card { padding: 28px 18px; }
  .bi-page .service-card .name { font-size: 16px; }
}
@media (min-width: 1024px) {
  .bi-page .services-grid { grid-template-columns: repeat(8, 1fr); gap: 14px; }
  .bi-page .service-card { padding: 24px 10px; }
  .bi-page .service-card .icon { font-size: 34px; }
  .bi-page .service-card .name { font-size: 14px; }
}

/* 8. 5가지 약속 */
.bi-page .promises { background: #F7F7F7; }
.bi-page .promises-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.bi-page .promise-card {
  background: #fff; border-radius: 16px; padding: 24px 20px;
  text-align: center; border: 2px solid transparent; transition: border-color .2s ease;
}
.bi-page .promise-card:hover { border-color: #FFB800; }
.bi-page .promise-card .icon { font-size: 40px; margin-bottom: 10px; }
.bi-page .promise-card h4 { font-size: 18px; font-weight: 800; color: #0066B3; margin-bottom: 6px; }
.bi-page .promise-card p { font-size: 13px; color: #555; line-height: 1.6; }
@media (min-width: 768px) {
  .bi-page .promises-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
}
@media (min-width: 1024px) {
  .bi-page .promises-grid { grid-template-columns: repeat(5, 1fr); }
}

/* 9. 운영사 정보 */
.bi-page .company { background: #1A2B4A; color: #fff; }
.bi-page .company .inner { max-width: 900px; margin: 0 auto; }
.bi-page .company h2 { font-size: 22px; font-weight: 800; margin-bottom: 8px; color: #fff; }
.bi-page .company .company-jp { color: #a8c2e6; font-size: 14px; margin-bottom: 24px; }
.bi-page .company dl {
  display: grid; grid-template-columns: 90px 1fr;
  row-gap: 10px; column-gap: 12px; font-size: 14px; margin-bottom: 24px;
}
.bi-page .company dt { color: #a8c2e6; font-weight: 600; }
.bi-page .company dd { margin: 0; color: #fff; }
.bi-page .company .disclaimer {
  margin-top: 28px; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.15);
  color: #b8c6d9; font-size: 12.5px; line-height: 1.7;
}
@media (min-width: 768px) {
  .bi-page .company h2 { font-size: 28px; }
  .bi-page .company dl { grid-template-columns: 120px 1fr; font-size: 15px; }
}

/* 지역 링크 */
.bi-page .region-link {
  display: inline-block; margin-top: 16px; padding: 8px 18px;
  background: #0066B3; color: #fff; border-radius: 999px;
  font-size: 13px; font-weight: 700; text-decoration: none;
  transition: background .15s ease, transform .15s ease;
}
.bi-page .region-link:hover { background: #004d85; transform: translateY(-1px); }
.bi-page .coverage-step h4 a {
  color: inherit; text-decoration: none;
  border-bottom: 2px solid transparent; transition: border-color .15s ease;
}
.bi-page .coverage-step h4 a:hover { border-bottom-color: #FFB800; }
.bi-page .coverage-step p a {
  color: #0066B3; font-weight: 700; text-decoration: none;
  border-bottom: 1px dashed #0066B3; padding-bottom: 1px;
}
.bi-page .coverage-step p a:hover { border-bottom-style: solid; }