/* bestmedi.com — 메인 스타일 (1단계)
 * 원칙: 깔끔·심플·사용자 중심
 * 컬러: 의료 신뢰의 파란 + 충분한 여백
 */
:root {
  --bm-primary: #0ea5e9;
  --bm-primary-dark: #0369a1;
  --bm-primary-50: #f0f9ff;
  --bm-primary-100: #e0f2fe;
  --bm-accent: #1e40af;
  --bm-text: #0f172a;
  --bm-text-soft: #475569;
  --bm-text-mute: #94a3b8;
  --bm-bg: #ffffff;
  --bm-bg-soft: #f8fafc;
  --bm-border: #e2e8f0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; scroll-behavior: smooth; }
body {
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif;
  color: var(--bm-text);
  background: var(--bm-bg);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.bm-container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ─── 헤더 ─── */
.bm-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.92);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bm-border);
}
.bm-header-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.bm-logo {
  font-weight: 800; font-size: 20px; letter-spacing: -0.01em;
  color: var(--bm-primary-dark);
}
.bm-logo span { color: var(--bm-text); }
.bm-nav { display: flex; gap: 22px; flex: 1; }
.bm-nav a { font-size: 15px; color: var(--bm-text-soft); font-weight: 500; transition: color 0.15s; }
.bm-nav a:hover { color: var(--bm-primary); }
.bm-nav a.active { color: var(--bm-primary-dark); font-weight: 700; }

/* ─── 버튼 ─── */
.bm-btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 20px; border-radius: 9999px;
  font-weight: 600; font-size: 14px; transition: all 0.15s;
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
}
.bm-btn-primary { background: var(--bm-primary); color: #fff; }
.bm-btn-primary:hover { background: var(--bm-primary-dark); }
.bm-btn-ghost { background: transparent; color: var(--bm-primary-dark); border-color: var(--bm-border); }
.bm-btn-ghost:hover { border-color: var(--bm-primary); color: var(--bm-primary); }
.bm-btn-lg { padding: 15px 36px; font-size: 16px; }

/* ─── Hero ─── */
.bm-hero {
  padding: 100px 0 88px;
  background: linear-gradient(180deg, var(--bm-primary-50) 0%, #ffffff 100%);
  text-align: center;
}
.bm-hero-eyebrow {
  display: inline-block;
  padding: 6px 14px; border-radius: 9999px;
  background: var(--bm-primary-100); color: var(--bm-primary-dark);
  font-size: 13px; font-weight: 600; margin-bottom: 22px;
}
.bm-hero h1 {
  font-size: 52px; font-weight: 800; letter-spacing: -0.025em;
  margin-bottom: 20px; color: var(--bm-text); line-height: 1.2;
}
.bm-hero h1 b { color: var(--bm-primary-dark); font-weight: 800; }
.bm-hero-lead {
  font-size: 18px; color: var(--bm-text-soft);
  margin-bottom: 40px; line-height: 1.65;
}

/* AI 비서 입력창 */
.bm-ai-input {
  display: flex; max-width: 660px; margin: 0 auto;
  background: #fff; border: 2px solid var(--bm-primary);
  border-radius: 9999px; padding: 5px;
  box-shadow: 0 18px 40px -10px rgba(14,165,233,0.25);
  transition: box-shadow 0.2s;
}
.bm-ai-input:focus-within { box-shadow: 0 22px 50px -10px rgba(14,165,233,0.35); }
.bm-ai-input input {
  flex: 1; border: 0; outline: 0;
  padding: 14px 22px; font-size: 16px;
  background: transparent; color: var(--bm-text);
  font-family: inherit;
}
.bm-ai-input input::placeholder { color: var(--bm-text-mute); }
.bm-ai-input button {
  border: 0; background: var(--bm-primary); color: #fff;
  padding: 12px 28px; border-radius: 9999px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  white-space: nowrap; transition: background 0.15s;
}
.bm-ai-input button:hover { background: var(--bm-primary-dark); }
.bm-hero-hint {
  font-size: 13px; color: var(--bm-text-mute); margin-top: 18px;
}
.bm-hero-hint b { color: var(--bm-primary-dark); }

/* ─── 섹션 공통 ─── */
.bm-section { padding: 88px 0; }
.bm-section-alt { background: var(--bm-bg-soft); }
.bm-section-head { text-align: center; margin-bottom: 52px; }
.bm-section-head h2 {
  font-size: 34px; font-weight: 800;
  letter-spacing: -0.02em; margin-bottom: 12px;
}
.bm-section-head p {
  font-size: 16px; color: var(--bm-text-soft);
}

/* ─── 카테고리 6 그리드 ─── */
.bm-cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.bm-cat {
  display: block; background: #fff; border: 1px solid var(--bm-border);
  border-radius: 18px; padding: 36px 28px; text-align: center;
  transition: all 0.2s ease;
}
.bm-cat:hover {
  border-color: var(--bm-primary);
  box-shadow: 0 14px 36px -8px rgba(14,165,233,0.18);
  transform: translateY(-3px);
}
.bm-cat-icon { font-size: 52px; margin-bottom: 18px; line-height: 1; }
.bm-cat h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; color: var(--bm-text); }
.bm-cat p { font-size: 14px; color: var(--bm-text-soft); }

/* ─── 비전 4 그리드 ─── */
.bm-vision-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.bm-vision {
  background: #fff; border-radius: 16px; padding: 30px 24px;
  border-top: 4px solid var(--bm-primary);
  box-shadow: 0 4px 14px -4px rgba(15,23,42,0.05);
}
.bm-vision .bm-vision-ico { font-size: 32px; margin-bottom: 14px; line-height: 1; }
.bm-vision h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; color: var(--bm-text); }
.bm-vision p { font-size: 14px; color: var(--bm-text-soft); line-height: 1.6; }

/* ─── CTA ─── */
.bm-cta {
  background: linear-gradient(135deg, var(--bm-primary) 0%, var(--bm-accent) 100%);
  border-radius: 24px; padding: 64px 32px; text-align: center; color: #fff;
}
.bm-cta h2 { font-size: 30px; font-weight: 800; margin-bottom: 12px; color: #fff; }
.bm-cta p { font-size: 16px; opacity: 0.92; margin-bottom: 32px; color: #fff; }
.bm-cta .bm-btn { background: #fff; color: var(--bm-primary-dark); }
.bm-cta .bm-btn:hover { background: var(--bm-primary-100); }

/* ─── 푸터 ─── */
.bm-footer { background: #0f172a; color: rgba(255,255,255,0.85); padding: 56px 0 28px; }
.bm-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.bm-footer-brand p { font-size: 14px; color: rgba(255,255,255,0.6); margin-top: 8px; line-height: 1.7; }
.bm-footer-brand strong { font-size: 18px; color: #fff; }
.bm-footer-col strong { display: block; color: #fff; font-size: 14px; margin-bottom: 14px; font-weight: 700; }
.bm-footer-col a { display: block; font-size: 14px; line-height: 2; color: rgba(255,255,255,0.65); transition: color 0.15s; }
.bm-footer-col a:hover { color: #fff; }
.bm-footer hr { border: 0; border-top: 1px solid rgba(255,255,255,0.08); margin: 36px 0 20px; }
.bm-footer-bottom { text-align: center; font-size: 13px; color: rgba(255,255,255,0.45); }

/* ─── 페이지 본문 (서브 페이지용) ─── */
.bm-page { padding: 80px 0 96px; }
.bm-page h1 { font-size: 40px; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 14px; }
.bm-page-sub { font-size: 17px; color: var(--bm-text-soft); margin-bottom: 40px; }
.bm-prose { max-width: 760px; }
.bm-prose p { font-size: 16px; margin-bottom: 18px; color: var(--bm-text-soft); line-height: 1.8; }
.bm-prose h2 { font-size: 24px; font-weight: 700; margin: 40px 0 14px; color: var(--bm-text); }
.bm-prose ul { padding-left: 22px; margin-bottom: 18px; }
.bm-prose li { font-size: 16px; color: var(--bm-text-soft); margin-bottom: 8px; line-height: 1.7; }

/* ─── 반응형 ─── */
@media (max-width: 900px) {
  .bm-nav { display: none; }
  .bm-hero { padding: 68px 0 60px; }
  .bm-hero h1 { font-size: 34px; }
  .bm-hero-lead { font-size: 16px; }
  .bm-ai-input { padding: 4px; }
  .bm-ai-input input { padding: 12px 18px; font-size: 15px; }
  .bm-ai-input button { padding: 11px 22px; font-size: 14px; }
  .bm-section { padding: 60px 0; }
  .bm-section-head h2 { font-size: 26px; }
  .bm-cat-grid { grid-template-columns: 1fr; }
  .bm-vision-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .bm-cta { padding: 44px 22px; border-radius: 18px; }
  .bm-cta h2 { font-size: 22px; }
  .bm-footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .bm-page h1 { font-size: 28px; }
}