/* ==========================================================
   CONTROLBIT 공용 스타일
   팔레트: 딥 네이비 + 블루 / 폰트: Pretendard Variable
   ========================================================== */
:root {
  --navy: #0a2540;
  --navy-dark: #061a30;
  --blue: #1d4ed8;
  --blue-light: #2563eb;
  --sky: #eff6ff;
  --text: #334155;
  --text-light: #64748b;
  --line: #e2e8f0;
  --bg-soft: #f8fafc;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;
  color: var(--text);
  line-height: 1.7;
  letter-spacing: -0.01em;
  background: #fff;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
::selection { background: var(--navy); color: #fff; }

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

/* ---------- Header ---------- */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--navy); letter-spacing: -0.02em; }
.logo img { width: 30px; height: 30px; object-fit: contain; }
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a { font-size: 15px; font-weight: 500; color: var(--text); transition: color 0.15s; }
.nav-links a:hover { color: var(--blue); }
.nav-cta {
  background: var(--navy); color: #fff !important; font-weight: 600;
  padding: 10px 20px; border-radius: 8px; transition: background 0.2s, transform 0.15s;
}
.nav-cta:hover { background: var(--navy-dark); transform: translateY(-1px); }
.lang { font-size: 14px; font-weight: 700; color: var(--text-light); border: 1px solid var(--line); padding: 6px 12px; border-radius: 8px; }
.lang:hover { color: var(--blue); border-color: var(--blue); }
.menu-btn { display: none; background: none; border: none; font-size: 26px; color: var(--navy); cursor: pointer; }

/* ---------- Hero (홈) ---------- */
.hero { padding: 160px 0 90px; background: linear-gradient(180deg, var(--sky) 0%, #ffffff 100%); }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
.hero-badge {
  display: inline-block; background: #dbeafe; color: var(--blue);
  font-size: 13.5px; font-weight: 700; padding: 6px 14px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(38px, 5vw, 58px); font-weight: 800; color: var(--navy);
  letter-spacing: -0.035em; line-height: 1.22; margin-bottom: 22px;
}
.hero h1 .accent { color: var(--blue); }
.hero p { font-size: 18px; color: var(--text-light); max-width: 520px; margin-bottom: 36px; }
.hero-img {
  border-radius: 20px; overflow: hidden;
  box-shadow: 0 24px 60px rgba(10, 37, 64, 0.18);
  background: #fff;
}

/* ---------- 서브페이지 히어로 ---------- */
.page-hero { padding: 140px 0 56px; background: linear-gradient(180deg, var(--sky) 0%, #ffffff 100%); }
.breadcrumb { font-size: 14px; color: var(--text-light); margin-bottom: 14px; }
.breadcrumb a { color: var(--blue); }
.page-hero h1 { font-size: clamp(30px, 4vw, 44px); font-weight: 800; color: var(--navy); letter-spacing: -0.03em; line-height: 1.25; margin-bottom: 12px; }
.page-hero .sub { font-size: 17px; color: var(--text-light); max-width: 680px; }

/* ---------- 버튼 ---------- */
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 10px; font-size: 16px; font-weight: 600;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(10, 37, 64, 0.25); }
.btn-ghost { background: #fff; color: var(--navy); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--navy); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--navy); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3); }
.btn-outline { border: 1.5px solid rgba(255, 255, 255, 0.4); color: #fff; }
.btn-outline:hover { border-color: #fff; transform: translateY(-2px); }

/* ---------- Stats ---------- */
.stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.stat { text-align: center; padding: 36px 16px; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat b { display: block; font-size: 34px; font-weight: 800; color: var(--navy); letter-spacing: -0.03em; }
.stat span { font-size: 15px; color: var(--text-light); }

/* ---------- 섹션 공통 ---------- */
section { padding: 96px 0; }
.sec-label { font-size: 14px; font-weight: 700; color: var(--blue); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 12px; }
.sec-title { font-size: clamp(28px, 3.4vw, 40px); font-weight: 800; color: var(--navy); letter-spacing: -0.03em; line-height: 1.3; margin-bottom: 16px; }
.sec-desc { font-size: 17px; color: var(--text-light); max-width: 620px; margin-bottom: 52px; }

/* ---------- 카드 ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 32px 28px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-5px); box-shadow: 0 16px 36px rgba(10, 37, 64, 0.1); }
.card .icon {
  width: 48px; height: 48px; border-radius: 12px; background: var(--sky);
  display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 20px;
}
.card h3 { font-size: 19px; font-weight: 700; color: var(--navy); letter-spacing: -0.02em; margin-bottom: 10px; }
.card p { font-size: 15px; color: var(--text-light); }

/* ---------- 제품/포트폴리오 카드 ---------- */
.products { background: var(--bg-soft); }
.portfolio { background: var(--bg-soft); }
.p-card {
  background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s; display: flex; flex-direction: column;
}
.p-card:hover { transform: translateY(-5px); box-shadow: 0 16px 36px rgba(10, 37, 64, 0.12); }
.p-card .thumb { aspect-ratio: 4 / 3; overflow: hidden; background: #fff; display: flex; align-items: center; justify-content: center; }
.p-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.p-card:hover .thumb img { transform: scale(1.05); }
.p-card .body { padding: 22px 22px 26px; flex: 1; }
.p-card h3 { font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 8px; letter-spacing: -0.02em; }
.p-card p { font-size: 14px; color: var(--text-light); margin-bottom: 14px; }
.p-card .more { font-size: 14px; font-weight: 600; color: var(--blue); }

/* ---------- 프로세스 ---------- */
.step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step { position: relative; padding: 28px 24px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
.step .num { font-size: 13px; font-weight: 800; color: var(--blue); letter-spacing: 0.06em; margin-bottom: 12px; }
.step h3 { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 8px; letter-spacing: -0.02em; }
.step p { font-size: 14px; color: var(--text-light); }

/* ---------- 제품 상세 ---------- */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.detail-img { border-radius: 16px; border: 1px solid var(--line); overflow: hidden; background: #fff; }
.detail-img img { width: 100%; }
.img-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
.img-row .detail-img { margin-top: 0; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec-table th, .spec-table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.spec-table th { color: var(--navy); font-weight: 700; width: 40%; background: var(--bg-soft); }
.feature-list { list-style: none; }
.feature-list li { padding: 10px 0 10px 30px; position: relative; font-size: 15.5px; }
.feature-list li::before { content: '✓'; position: absolute; left: 0; color: var(--blue); font-weight: 800; }
.cert-row { display: flex; gap: 20px; align-items: center; margin-top: 24px; }
.cert-row img { height: 56px; width: auto; }

/* ---------- 본문 프로즈 (개인정보 등) ---------- */
.prose { max-width: 800px; }
.prose h2 { font-size: 22px; font-weight: 800; color: var(--navy); margin: 40px 0 14px; letter-spacing: -0.02em; }
.prose p, .prose li { font-size: 15.5px; color: var(--text); margin-bottom: 10px; }
.prose ul { padding-left: 22px; }

/* ---------- CTA ---------- */
.cta { background: var(--navy); border-radius: 24px; padding: 72px 48px; text-align: center; }
.cta h2 { font-size: clamp(26px, 3.2vw, 38px); font-weight: 800; color: #fff; letter-spacing: -0.03em; margin-bottom: 14px; }
.cta p { color: #b7c6d9; font-size: 17px; margin-bottom: 34px; }
.cta .btn-row { justify-content: center; }

/* ---------- 문의 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 32px; }
.contact-card h3 { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.contact-card p { font-size: 15px; color: var(--text-light); margin-bottom: 4px; }
.contact-card a.big { font-size: 20px; font-weight: 700; color: var(--blue); }

/* ---------- Footer ---------- */
footer { padding: 56px 0 40px; border-top: 1px solid var(--line); background: #fff; }
.foot-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.foot-info { font-size: 14px; color: var(--text-light); line-height: 2; }
.foot-info b { color: var(--navy); font-size: 16px; }
.foot-links { display: flex; gap: 48px; flex-wrap: wrap; }
.foot-links div { font-size: 14px; }
.foot-links b { display: block; color: var(--navy); margin-bottom: 10px; font-size: 14.5px; }
.foot-links a { display: block; color: var(--text-light); margin-bottom: 8px; transition: color 0.15s; }
.foot-links a:hover { color: var(--blue); }
.copyright { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 13px; color: #94a3b8; }

/* ---------- 등장 애니메이션 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.on { opacity: 1; transform: none; }

/* ---------- 모바일 ---------- */
@media (max-width: 900px) {
  .hero-grid, .detail-grid, .contact-grid, .grid-2 { grid-template-columns: 1fr; gap: 40px; }
  .grid-3, .grid-4, .step-grid { grid-template-columns: 1fr 1fr; }
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 24px; gap: 18px;
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open { display: flex; }
  .menu-btn { display: block; }
}
@media (max-width: 560px) {
  .grid-3, .grid-4, .step-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat + .stat { border-left: none; border-top: 1px solid var(--line); }
  section { padding: 64px 0; }
  .cta { padding: 48px 24px; }
}