/* ==========================================================
   intro.css — 서비스 소개서 페이지 (/intro, intro.php) 전용 스타일
   작성: 2026-05-12
   - sales/isup_onepager.html(인쇄용 A4)의 콘텐츠를 웹/모바일 반응형으로 재구성.
   - 색상은 common.css의 --primary 계열을 그대로 사용해 사이트 톤과 일관.
   - 인쇄(Ctrl+P) 시에는 nav/footer/CTA 버튼을 숨기지만, 정식 인쇄본은 /intro/onepager.
   ========================================================== */

.intro-wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ── 히어로 ── */
.intro-hero {
  text-align: center;
  padding: 56px 24px 44px;
  background: linear-gradient(180deg, var(--primary-light) 0%, #fff 100%);
  border-bottom: 1px solid var(--border-color);
}
.intro-hero .ih-kicker {
  font-size: 14px; font-weight: 700; letter-spacing: .04em;
  color: var(--primary); text-transform: none; margin-bottom: 14px;
}
.intro-hero h1 {
  font-size: 38px; font-weight: 800; color: var(--text-primary);
  line-height: 1.25; margin: 0 0 16px; letter-spacing: -.02em;
}
.intro-hero .ih-sub {
  font-size: 17px; color: var(--text-secondary); line-height: 1.7;
  max-width: 660px; margin: 0 auto 28px;
}
.intro-hero .ih-sub strong { color: var(--text-primary); font-weight: 700; }
.intro-cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.intro-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 13px 26px; border-radius: 10px; font-size: 15px; font-weight: 700;
  text-decoration: none; transition: background .2s, box-shadow .2s, color .2s;
}
.intro-btn.primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 4px 14px rgba(43,122,158,.25);
}
.intro-btn.primary:hover { background: var(--primary-dark); }
.intro-btn.ghost {
  background: #fff; color: var(--primary); border: 1.5px solid var(--primary);
}
.intro-btn.ghost:hover { background: var(--primary-light); }

/* ── 섹션 공통 ── */
.intro-section { padding: 52px 0; }
.intro-section + .intro-section { border-top: 1px solid var(--border-color); }
.intro-section h2 {
  font-size: 26px; font-weight: 800; color: var(--text-primary);
  text-align: center; margin: 0 0 8px; letter-spacing: -.01em;
}
.intro-section .sec-sub {
  text-align: center; font-size: 15px; color: var(--text-tertiary);
  margin: 0 auto 32px; max-width: 640px; line-height: 1.6;
}

/* ── 태그 칩 (AI / 규칙기반 / PRO) ── */
.tag {
  display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: .02em;
  padding: 2px 9px; border-radius: 10px;
}
.tag.ai   { background: #E0F7FA; color: #007A8A; }
.tag.rule { background: #EEF2F4; color: #546E7A; }
.tag.pro  { background: #FFF3D6; color: #B8860B; }

/* ── 핵심 기능 2x2 ── */
.feat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.feat-card {
  border: 1px solid var(--border-color); border-radius: 12px; padding: 22px 24px;
  background: #fff;
}
.feat-card .fc-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--primary); color: #fff; font-size: 14px; font-weight: 800;
  margin-bottom: 10px;
}
.feat-card .fc-title { font-size: 18px; font-weight: 800; color: var(--text-primary); margin: 0 0 6px; }
.feat-card .fc-desc  { font-size: 14.5px; color: var(--text-secondary); line-height: 1.6; margin: 0; }
.feat-card .fc-desc strong { color: var(--text-primary); font-weight: 700; }
.feat-card .fc-tags  { margin-top: 12px; display: flex; gap: 6px; flex-wrap: wrap; }

/* ── Pro 전용 박스 ── */
.pro-box {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff; border-radius: 14px; padding: 28px 32px; max-width: 760px; margin: 0 auto;
}
.pro-box .pb-head { font-size: 16px; font-weight: 800; margin-bottom: 16px; text-align: center; }
.pro-box ul { list-style: none; margin: 0; padding: 0; }
.pro-box li {
  display: flex; gap: 16px; align-items: baseline;
  padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,.18); font-size: 15px;
}
.pro-box li:last-child { border-bottom: 0; }
.pro-box li .pt-name { font-weight: 800; flex: 0 0 200px; }
.pro-box li .pt-desc { color: rgba(255,255,255,.92); }

/* ── PDF 보고서 칩 ── */
.pdf-row { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.pdf-chip {
  background: var(--primary-light); color: var(--primary-dark);
  border-radius: 999px; padding: 8px 18px; font-size: 14px; font-weight: 700;
}
.pdf-chip span { font-weight: 400; }

/* ── 화면 예시 ── */
.shots { display: flex; flex-direction: column; gap: 36px; }
.shot {
  display: grid; grid-template-columns: 1fr 1.25fr; gap: 28px; align-items: center;
}
.shot:nth-child(even) { grid-template-columns: 1.25fr 1fr; }
.shot:nth-child(even) .shot-text { order: 2; }
.shot .shot-text .st-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.shot .shot-text .st-title { font-size: 19px; font-weight: 800; color: var(--text-primary); }
.shot .shot-text p { font-size: 14.5px; color: var(--text-secondary); line-height: 1.7; margin: 0; }
.shot .shot-text p strong { color: var(--text-primary); font-weight: 700; }
.shot .shot-text p .muted { color: var(--text-tertiary); }
.shot .shot-img {
  border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden;
  background: #0c1419; box-shadow: 0 6px 22px rgba(26,35,50,.10);
}
.shot .shot-img img { display: block; width: 100%; height: auto; }
.shots-note {
  text-align: center; font-size: 13px; color: var(--text-tertiary); margin-top: 28px;
}

/* ── 차별화 3카드 ── */
.diff-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.diff-card {
  border: 1px solid var(--border-color); border-top: 3px solid var(--primary);
  border-radius: 12px; padding: 24px 20px; text-align: center; background: #fff;
}
.diff-card .dc-title { font-size: 16px; font-weight: 800; color: var(--text-primary); margin: 0 0 8px; }
.diff-card .dc-desc  { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin: 0; }
.diff-card .dc-desc strong { color: var(--primary-dark); font-weight: 800; }

/* ── 가격 3카드 ── */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: stretch; }
.price-card {
  border: 1.5px solid #B0BEC5; border-radius: 14px; padding: 26px 22px; text-align: center;
  background: #fff; display: flex; flex-direction: column;
}
.price-card.featured { border: 2px solid var(--primary); background: var(--primary-light); }
.price-card.business { border: 2px solid var(--primary-dark); background: #EFF9FA; }
.price-card .pc-name {
  font-size: 16px; font-weight: 800; color: var(--text-primary);
  padding-bottom: 10px; margin-bottom: 12px; border-bottom: 1.5px solid var(--border-color);
}
.price-card .pc-name small { font-size: 11px; font-weight: 600; color: var(--text-tertiary); }
.price-card.featured .pc-name { border-bottom-color: var(--primary); }
.price-card.business .pc-name { border-bottom-color: var(--primary-dark); color: var(--primary-dark); }
.price-card .pc-price { font-size: 24px; font-weight: 800; color: var(--primary); margin-bottom: 4px; }
.price-card.business .pc-price { color: var(--primary-dark); }
.price-card .pc-price .strike {
  display: block; font-size: 14px; font-weight: 600; color: var(--text-tertiary);
  text-decoration: line-through; margin-bottom: 2px;
}
.price-card .pc-early { font-size: 12px; font-weight: 800; color: #B8860B; margin-bottom: 10px; }
.price-card .pc-desc { font-size: 13.5px; color: var(--text-secondary); line-height: 1.6; margin-top: auto; }

/* ── 마무리 CTA 밴드 ── */
.intro-final {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff; text-align: center; padding: 52px 24px;
}
.intro-final h2 { color: #fff; font-size: 26px; font-weight: 800; margin: 0 0 10px; }
.intro-final p { color: rgba(255,255,255,.92); font-size: 16px; margin: 0 0 24px; line-height: 1.6; }
.intro-final .intro-btn.primary { background: #fff; color: var(--primary-dark); }
.intro-final .intro-btn.primary:hover { background: #eef6f8; }
.intro-final .intro-btn.ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.7); }
.intro-final .intro-btn.ghost:hover { background: rgba(255,255,255,.12); }

/* ── 반응형 ── */
@media (max-width: 860px) {
  .intro-hero h1 { font-size: 30px; }
  .feat-grid { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: 1fr; }
  .shot, .shot:nth-child(even) { grid-template-columns: 1fr; }
  .shot:nth-child(even) .shot-text { order: 0; }
  .pro-box li { flex-direction: column; gap: 2px; }
  .pro-box li .pt-name { flex: none; }
}
@media (max-width: 520px) {
  .intro-hero { padding: 40px 18px 32px; }
  .intro-hero h1 { font-size: 25px; }
  .intro-hero .ih-sub { font-size: 15px; }
  .intro-section { padding: 40px 0; }
  .intro-section h2 { font-size: 22px; }
  .intro-btn { width: 100%; justify-content: center; }
}

/* ── 인쇄 (간이) — 정식 인쇄본은 /intro/onepager ── */
@media print {
  nav, footer, .intro-cta-row, .intro-final, .intro-hero .ih-kicker { display: none !important; }
  body.isup-nav { padding-top: 0 !important; }
  .intro-hero { background: #fff; border: 0; padding: 0 0 16px; }
  .intro-section { padding: 16px 0; border-top: 1px solid #ccc; }
  .pro-box, .intro-final { color: #000; background: #fff !important; border: 1px solid #ccc; }
  .shot .shot-img { box-shadow: none; }
}