/* WSIM 랜딩 공용 스타일 — design4_final_v2.1_c.html 발췌·경량화
   라이트 고정 · 본문 18px · 반응형(≤768px) · Primary #0052CC */

/* 1. 변수 */
:root {
  --color-primary: #0052CC;
  --color-primary-dark: #003d99;
  --color-accent: #0066cc;

  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-alt: #f0f4f8;
  --bg-dark: #0f172a;
  --bg-light-blue: #e8f4fd;

  --text-dark: #111827;
  --text-secondary: #374151;
  --text-muted: #4b5563;
  --text-light: #ffffff;

  --border-light: #e5e7eb;

  --shadow-subtle: 0 2px 8px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 20px rgba(0,0,0,.12);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.15);

  --primary-shadow-30: rgba(0,82,204,.3);

  --font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --header-h: 68px;
  --maxw: 1080px;
  --transition: all .25s ease-in-out;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  font-family: var(--font-family);
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--bg-white);
  overflow-x: hidden;
}

a { color: var(--color-primary); }
img { max-width: 100%; display: block; }

a, button { -webkit-tap-highlight-color: transparent; }
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute; top: -48px; left: 0;
  background: var(--color-primary); color: #fff;
  padding: 10px 16px; text-decoration: none; z-index: 1000;
}
.skip-link:focus { top: 0; }

/* 2. 헤더*/
.lp-header {
  position: fixed; inset: 0 0 auto 0;
  height: var(--header-h);
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
  z-index: 999;
}
.lp-header-inner {
  max-width: 1280px; margin: 0 auto; height: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px;
}
.lp-logo {
  font-size: 22px; font-weight: 800; letter-spacing: -.3px;
  color: var(--color-primary); text-decoration: none;
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
}
.lp-logo:hover { color: var(--color-primary-dark); }
.lp-logo small {
  font-size: 13px; font-weight: 600; color: var(--text-muted);
  letter-spacing: -.2px;
}
.lp-phone {
  display: flex; align-items: center; gap: 6px;
  min-height: 44px; padding: 8px 16px;
  background: var(--color-primary); color: #fff;
  text-decoration: none; border-radius: 10px;
  font-size: 15px; font-weight: 700; letter-spacing: -.2px;
  font-variant-numeric: tabular-nums;
  transition: background-color .2s ease, transform .15s ease;
}
.lp-phone:hover, .lp-phone:focus-visible { background: var(--color-primary-dark); color: #fff; }
.lp-phone:active { transform: scale(.97); }
.lp-phone svg { width: 18px; height: 18px; flex-shrink: 0; }

/* 3. 브레드크럼*/
.breadcrumb {
  max-width: var(--maxw); margin: 0 auto;
  padding: calc(var(--header-h) + 24px) 24px 0;
}
.breadcrumb ol {
  list-style: none; display: flex; flex-wrap: wrap; align-items: center;
  gap: 6px; font-size: 14px; color: var(--text-muted);
}
.breadcrumb li { display: flex; align-items: center; gap: 6px; }
.breadcrumb li + li::before { content: '›'; color: var(--text-muted); opacity: .7; }
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-primary); text-decoration: underline; }
.breadcrumb [aria-current="page"] { color: var(--text-secondary); font-weight: 600; }

/* 4. 섹션 / 컨테이너*/
.lp-main { display: block; }
.lp-section { padding: 56px 24px; }
.lp-section--alt { background: var(--bg-alt); }
.lp-container { max-width: var(--maxw); margin: 0 auto; }

/* 5. 타이포 (H1 / 리드 / 본문)*/
.lp-h1 {
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 800; line-height: 1.2; letter-spacing: -1px;
  color: var(--text-dark); margin: 14px 0 20px;
}
.lp-h1 .accent-line,
.accent-line {
  display: block; width: 52px; height: 5px; border-radius: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  margin: 18px 0 0;
}
.lp-lead {
  font-size: clamp(18px, 2.4vw, 21px);
  color: var(--text-secondary); line-height: 1.75;
  max-width: 760px; margin: 24px 0 0; font-weight: 500;
}
.lp-eyebrow {
  display: inline-block; background: var(--bg-light-blue);
  color: var(--color-primary); font-size: 13px; font-weight: 700;
  letter-spacing: .5px; padding: 6px 14px; border-radius: 6px;
}

.lp-prose { margin-top: 48px; }
.lp-prose > h2 {
  font-size: clamp(24px, 3.6vw, 32px);
  font-weight: 800; line-height: 1.25; letter-spacing: -.6px;
  color: var(--text-dark); margin: 44px 0 16px;
  padding-left: 16px; border-left: 4px solid var(--color-primary);
}
.lp-prose > h2:first-child { margin-top: 0; }
.lp-prose > h3 {
  font-size: 20px; font-weight: 700; color: var(--text-dark);
  margin: 28px 0 12px;
}
.lp-prose p { margin: 0 0 18px; color: var(--text-secondary); }
.lp-prose strong { color: var(--text-dark); font-weight: 700; }
.lp-prose ul { margin: 0 0 20px; padding: 0; list-style: none; }
.lp-prose ul li {
  position: relative; padding-left: 30px; margin-bottom: 12px;
  color: var(--text-secondary); line-height: 1.7;
}
.lp-prose ul li::before {
  content: '✓'; position: absolute; left: 0; top: 0;
  color: var(--color-primary); font-weight: 800;
}

/* 6. 핵심 강점 카드 (ISO / 실적 / 설비)*/
.strength-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 20px; margin: 40px 0;
}
.strength-card {
  background: var(--bg-white); border: 1px solid var(--border-light);
  border-radius: 12px; padding: 26px 22px; text-align: center;
  box-shadow: var(--shadow-subtle);
}
.lp-section--alt .strength-card { background: var(--bg-white); }
.strength-value {
  font-size: clamp(26px, 3.4vw, 34px); font-weight: 800;
  color: var(--color-primary); line-height: 1.1; letter-spacing: -.5px;
}
.strength-label {
  margin-top: 8px; font-size: 15px; font-weight: 600; color: var(--text-dark);
}
.strength-detail { margin-top: 4px; font-size: 14px; color: var(--text-muted); line-height: 1.4; }

/* 7. 실적 카드 그리드*/
.work-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 20px; margin: 32px 0 8px;
}
.work-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.work-card {
  position: relative; border-radius: 12px; overflow: hidden;
  box-shadow: var(--shadow-subtle); background: var(--bg-light);
  transition: var(--transition);
}
.work-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.work-card img { width: 100%; height: 240px; object-fit: cover; }
.work-caption {
  position: absolute; inset: auto 0 0 0;
  padding: 30px 18px 14px;
  background: linear-gradient(to top, rgba(15,23,42,.92) 0%, rgba(15,23,42,.55) 55%, transparent 100%);
  color: #fff;
}
.work-title { display: block; font-size: 16px; font-weight: 700; letter-spacing: -.2px; }
.work-desc { display: block; font-size: 14px; opacity: .9; margin-top: 2px; }
.work-badge {
  display: inline-block; margin-top: 8px; padding: 3px 11px;
  background: var(--color-primary); color: #fff;
  font-size: 12px; font-weight: 600; border-radius: 20px;
}

/* 8. 제조 공정 요약*/
.process-steps {
  list-style: none; display: grid;
  grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 28px 0 8px;
}
.process-step {
  background: var(--bg-white); border: 1px solid var(--border-light);
  border-radius: 12px; padding: 20px 18px; box-shadow: var(--shadow-subtle);
}
.lp-section--alt .process-step { background: var(--bg-white); }
.process-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--color-primary); color: #fff;
  font-size: 15px; font-weight: 700; margin-bottom: 12px;
}
.process-step h3 { font-size: 16px; font-weight: 700; color: var(--text-dark); margin-bottom: 6px; }
.process-step p { font-size: 14px; color: var(--text-muted); line-height: 1.55; }

/* 9. FAQ (details/summary, JS 없이)*/
.faq { margin: 20px 0 0; }
.faq-item {
  border: 1px solid var(--border-light); border-radius: 12px;
  background: var(--bg-white); margin-bottom: 14px; overflow: hidden;
}
.lp-section--alt .faq-item { background: var(--bg-white); }
.faq-q {
  list-style: none; cursor: pointer; display: flex;
  align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 22px; font-size: 18px; font-weight: 700; color: var(--text-dark);
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q::after {
  content: '+'; flex-shrink: 0; font-size: 26px; font-weight: 400;
  line-height: 1; color: var(--color-primary); transition: transform .2s ease;
}
.faq-item[open] .faq-q::after { transform: rotate(45deg); }
.faq-a {
  padding: 0 22px 22px; color: var(--text-secondary);
  font-size: 16px; line-height: 1.75;
}
.faq-a p { margin: 0 0 12px; }
.faq-a p:last-child { margin-bottom: 0; }

/* 10. CTA 배너*/
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 16px; padding: 48px 32px; margin: 48px 0 0;
  text-align: center; color: #fff; box-shadow: var(--shadow-lg);
}
.cta-banner h2 {
  font-size: clamp(24px, 3.6vw, 32px); font-weight: 800;
  letter-spacing: -.5px; margin-bottom: 12px;
}
.cta-banner p { font-size: 17px; opacity: .95; margin-bottom: 26px; line-height: 1.7; }
.cta-actions {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
}
.cta-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 14px 30px; border-radius: 10px;
  font-size: 16px; font-weight: 700; text-decoration: none;
  transition: transform .15s ease, box-shadow .2s ease;
}
.cta-btn svg { width: 18px; height: 18px; }
.cta-btn:active { transform: scale(.98); }
.cta-btn-solid { background: #fff; color: var(--color-primary); }
.cta-btn-solid:hover { box-shadow: 0 6px 20px rgba(0,0,0,.2); }
.cta-btn-outline {
  background: rgba(255,255,255,.12); color: #fff;
  border: 1.5px solid rgba(255,255,255,.85);
}
.cta-btn-outline:hover { background: rgba(255,255,255,.22); }

/* 11. 오시는 길*/
.location { margin-top: 20px; }
.location-map {
  border-radius: 12px; overflow: hidden;
  box-shadow: var(--shadow-md); background: var(--bg-light);
}
.location-map iframe { width: 100%; height: 340px; border: 0; display: block; }
.location-actions {
  display: flex; gap: 12px; margin-top: 18px; flex-wrap: wrap; align-items: center;
}
.location-address { font-size: 17px; font-weight: 600; color: var(--text-secondary); }
.map-link {
  font-size: 15px; font-weight: 600; color: var(--color-primary);
  text-decoration: none; padding: 8px 16px;
  border: 1.5px solid var(--color-primary); border-radius: 8px;
}
.map-link:hover { background: var(--color-primary); color: #fff; }

.trust-bar {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
  gap: 24px; margin-top: 36px; padding: 22px 24px;
  background: var(--color-primary); color: #fff; border-radius: 10px;
  font-size: 16px; font-weight: 500;
}
.trust-bar strong { font-weight: 800; }
.trust-bar span { display: flex; align-items: center; gap: 8px; }
.trust-bar span:not(:last-child) { padding-right: 24px; border-right: 1px solid rgba(255,255,255,.25); }

/* 12. 버튼 유틸*/
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 13px 30px; border-radius: 8px;
  font-size: 16px; font-weight: 600; text-decoration: none; cursor: pointer;
  border: none; transition: var(--transition); text-align: center;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: 0 4px 12px var(--primary-shadow-30); }
.btn-outline { background: transparent; color: var(--color-primary); border: 1.5px solid var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; }

/* 13. 인라인 관련 링크*/
.lp-inline-links {
  margin: 44px 0 0; padding: 22px 26px;
  background: var(--bg-light-blue); border: 1px solid rgba(0,82,204,.15);
  border-radius: 12px; font-size: 16px; color: var(--text-secondary);
}
.lp-inline-links a { color: var(--color-primary); font-weight: 600; text-decoration: none; }
.lp-inline-links a:hover { text-decoration: underline; }

/* 14. 푸터*/
.lp-footer {
  background: var(--bg-dark); color: rgba(255,255,255,.8);
  padding: 60px 24px 32px;
}
.lp-footer-inner { max-width: var(--maxw); margin: 0 auto; }
.lp-footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px;
  margin-bottom: 40px;
}
.lp-footer h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.lp-footer ul { list-style: none; }
.lp-footer li { margin-bottom: 10px; font-size: 14px; line-height: 1.6; }
.lp-footer a { color: rgba(255,255,255,.72); text-decoration: none; font-size: 14px; }
.lp-footer a:hover { color: #fff; }
.lp-footer-links a { display: block; }
.lp-footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px;
  text-align: center; font-size: 14px; color: rgba(255,255,255,.65);
}

/* 15. 반응형*/
@media (max-width: 900px) {
  .strength-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .work-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .lp-footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  body { font-size: 16px; }
  .lp-header { height: 60px; }
  .lp-header-inner { padding: 0 16px; }
  .lp-logo small { display: none; }
  .lp-phone { padding: 8px 14px; font-size: 14px; }
  .lp-section { padding: 44px 18px; }
  .breadcrumb { padding: 80px 18px 0; }
  .work-grid, .work-grid.cols-3 { grid-template-columns: 1fr 1fr; gap: 12px; }
  .work-card img { height: 180px; }
  .work-title { font-size: 14px; }
  .work-desc { font-size: 12px; }
  .cta-banner { padding: 36px 22px; }
  .cta-actions { flex-direction: column; }
  .cta-btn { width: 100%; }
  .trust-bar { flex-direction: column; gap: 14px; }
  .trust-bar span:not(:last-child) { border-right: none; padding-right: 0; padding-bottom: 14px; border-bottom: 1px solid rgba(255,255,255,.25); }
  .location-actions { flex-direction: column; align-items: flex-start; }
  .faq-q { font-size: 16px; padding: 18px; }
  .faq-a { padding: 0 18px 18px; font-size: 15px; }
}

@media (max-width: 480px) {
  .lp-section { padding: 36px 16px; }
  .breadcrumb { padding: 76px 16px 0; }
  .strength-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .strength-card { padding: 20px 14px; }
  .process-steps { grid-template-columns: 1fr; }
  .work-grid, .work-grid.cols-3 { grid-template-columns: 1fr; }
  .work-card img { height: 220px; }
  .lp-footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

/* 다크모드 무시 — 라이트 고정 */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}