/* ============================================
   SJCT — Shin Jin Chem Tech
   Common stylesheet for all pages
   ============================================ */

:root {
  /* ============================================
     신진켐텍 브랜드 컬러 — 공식 팔레트
     실제 브랜드 가이드에서 추출한 값입니다.
     ============================================ */

  /* Primary — Deep Navy Blue */
  --navy-900: #062557;
  --navy-800: #0c3b81;   /* PRIMARY — 로고, 헤딩, CTA */
  --navy-700: #1a528f;
  --navy-600: #3a72ac;
  --navy-500: #6b94c4;
  --navy-300: #b0c4dc;
  --navy-100: #dde6f1;
  --navy-50:  #eff3f9;

  /* Accent — Brand Yellow */
  --yellow-500: #f7d51d;  /* 강조 색상 */
  --yellow-600: #e0bd0d;
  --yellow-100: #fdf6c6;

  /* Neutrals — Cool gray */
  --ink-900: #16181c;
  --ink-700: #3a3d44;
  --ink-500: #6e7280;     /* 강조 색상 그레이 */
  --ink-300: #adb0b8;
  --ink-200: #d4d6dc;
  --ink-100: #e8eaef;
  --ink-50:  #f5f6f8;

  --bg:       #ffffff;
  --bg-card:  #ffffff;
  --bg-alt:   #f5f6f8;

  /* Legacy aliases — 기존 코드 호환용. 새 코드에선 navy-* 사용 권장 */
  --green-900: var(--navy-900);
  --green-800: var(--navy-800);
  --green-700: var(--navy-700);
  --green-600: var(--navy-600);
  --green-500: var(--navy-500);
  --green-100: var(--navy-100);
  --green-50:  var(--navy-50);
  --sand-100:  var(--ink-50);
  --sand-200:  var(--ink-100);
  --sand-300:  var(--ink-200);

  /* Type scale */
  --font-kr: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --font-serif: "Cormorant Garamond", "Noto Serif KR", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --container: 1240px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-kr);
  font-feature-settings: "ss06", "tnum";
  font-weight: 400;
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-900);
  background: var(--bg);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  text-wrap: pretty;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.2; letter-spacing: -0.02em; text-wrap: balance; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--ink-100);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.site-logo__img {
  height: 44px;
  width: auto;
  display: block;
}
.site-logo__img--sm { height: 32px; }

/* Logo placeholder — 실제 로고 파일이 올라오기 전까지 표시 */
.logo-placeholder {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px 8px 10px;
  border: 1.5px dashed var(--navy-300);
  border-radius: 8px;
  background: var(--navy-50);
  text-decoration: none;
}
.logo-placeholder__mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: repeating-linear-gradient(45deg, var(--navy-100) 0 6px, #fff 6px 12px);
  border: 1.5px dashed var(--navy-300);
  display: grid; place-items: center;
  flex-shrink: 0;
}
.logo-placeholder__mark::after {
  content: "?";
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 18px;
  color: var(--navy-700);
}
.logo-placeholder__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-placeholder__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--navy-900);
  letter-spacing: -0.01em;
}
.logo-placeholder__hint {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy-700);
  margin-top: 2px;
}
.site-footer .logo-placeholder {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.25);
}
.site-footer .logo-placeholder__mark {
  background: repeating-linear-gradient(45deg, rgba(255,255,255,0.12) 0 6px, rgba(255,255,255,0.04) 6px 12px);
  border-color: rgba(255,255,255,0.3);
}
.site-footer .logo-placeholder__mark::after { color: rgba(255,255,255,0.7); }
.site-footer .logo-placeholder__title { color: #fff; }
.site-footer .logo-placeholder__hint { color: rgba(255,255,255,0.55); }
.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-nav a {
  position: relative;
  padding: 10px 16px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-700);
  border-radius: 999px;
  transition: color .15s, background .15s;
}
.site-nav a:hover { background: var(--navy-50); color: var(--navy-800); }
.site-nav a.is-active { color: var(--navy-800); font-weight: 600; }
.site-nav a.is-active::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 2px;
  height: 2px;
  background: var(--yellow-500);
  border-radius: 2px;
}
.lang-switch {
  margin-left: 12px;
  padding-left: 16px;
  border-left: 1px solid var(--ink-100);
  display: flex;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.lang-switch a {
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--ink-500);
}
.lang-switch a.is-active { color: var(--navy-800); background: var(--navy-50); }

/* mobile nav toggle */
.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 88px 0 96px;
  overflow: hidden;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 8px;
  background: var(--navy-50);
  color: var(--navy-800);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero__eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--yellow-500);
  box-shadow: 0 0 0 4px rgba(247, 213, 29, 0.25);
}
.hero h1 {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 28px;
  color: var(--navy-900);
}
.hero h1 em {
  font-style: normal;
  font-family: var(--font-serif);
  font-weight: 500;
  font-style: italic;
  color: var(--navy-700);
}
.hero__lede {
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink-700);
  max-width: 520px;
  margin-bottom: 36px;
}
.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* CTA buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1.5px solid transparent;
  transition: transform .15s, background .2s, color .2s, border-color .2s, box-shadow .2s;
}
.btn--primary {
  background: var(--navy-800);
  color: #fff;
  box-shadow: 0 6px 16px -8px rgba(12, 59, 129, 0.4);
}
.btn--primary:hover {
  background: var(--navy-900);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -8px rgba(12, 59, 129, 0.5);
}
.btn--ghost {
  background: transparent;
  color: var(--navy-800);
  border-color: var(--navy-300);
}
.btn--ghost:hover {
  border-color: var(--navy-800);
  background: var(--navy-50);
}
.btn--accent {
  background: var(--yellow-500);
  color: var(--navy-900);
  box-shadow: 0 6px 16px -8px rgba(247, 213, 29, 0.6);
}
.btn--accent:hover {
  background: var(--yellow-600);
  transform: translateY(-1px);
}
.btn svg { width: 16px; height: 16px; }

/* Hero visual */
.hero__visual {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background:
    radial-gradient(120% 80% at 80% 10%, rgba(107, 148, 196, 0.45) 0%, transparent 50%),
    linear-gradient(160deg, var(--navy-700) 0%, var(--navy-900) 100%);
  box-shadow: 0 30px 60px -20px rgba(12, 59, 129, 0.4);
}
.hero__visual::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mix-blend-mode: overlay;
}
.hero__visual-illu {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero__visual-tag {
  position: absolute;
  left: 24px;
  bottom: 24px;
  z-index: 2;
  color: rgba(255,255,255,0.85);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.hero__stats {
  position: absolute;
  right: 24px;
  top: 24px;
  z-index: 2;
  background: rgba(255,255,255,0.95);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: grid;
  gap: 4px;
  min-width: 160px;
}
.hero__stats .label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-500);
  font-family: var(--font-mono);
}
.hero__stats .value {
  font-size: 24px;
  font-weight: 700;
  color: var(--navy-900);
}

/* ---------- Section ---------- */
.section {
  padding: 96px 0;
}
.section--alt {
  background: var(--bg-alt);
}
.section--dark {
  background: var(--navy-800);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.section--dark::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(60% 40% at 20% 20%, rgba(247, 213, 29, 0.08) 0%, transparent 50%),
    radial-gradient(50% 50% at 80% 80%, rgba(107, 148, 196, 0.15) 0%, transparent 50%);
  pointer-events: none;
}
.section--dark > .container { position: relative; z-index: 1; }
.section__head {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  margin-bottom: 56px;
  align-items: end;
}
.section__eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--navy-700);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section__eyebrow::before {
  content: "";
  width: 24px; height: 2px; background: var(--yellow-500);
}
.section h2 {
  font-size: clamp(28px, 3.5vw, 44px);
  color: var(--navy-900);
  font-weight: 700;
}
.section--dark h2 { color: #fff; }
.section--dark .section__eyebrow { color: var(--yellow-500); }
.section__lede {
  font-size: 16.5px;
  color: var(--ink-700);
  line-height: 1.7;
  max-width: 560px;
}
.section--dark .section__lede { color: rgba(255,255,255,0.8); }

/* ---------- Feature cards ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-md);
  padding: 32px 28px 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -20px rgba(15, 46, 31, 0.15);
  border-color: var(--green-100);
}
.feature-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--navy-700);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.feature-card__num .icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--navy-50);
  color: var(--navy-800);
  display: grid;
  place-items: center;
}
.feature-card__num .icon svg { width: 20px; height: 20px; }
.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--navy-900);
  letter-spacing: -0.01em;
}
.feature-card p {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-700);
}

/* ---------- Milestone Timeline ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--ink-100);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--ink-100);
}
.timeline__item {
  background: var(--bg-card);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 240px;
  position: relative;
}
.timeline__year {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-500);
}
.timeline__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--navy-900);
  line-height: 1.3;
}
.timeline__body {
  font-size: 14.5px;
  color: var(--ink-700);
  line-height: 1.65;
  margin-top: auto;
}
.timeline__item::before {
  content: "";
  position: absolute;
  top: 0; left: 32px;
  width: 40px;
  height: 3px;
  background: var(--yellow-500);
}

/* ---------- Product Cards (products page) ---------- */
.product-list {
  display: grid;
  gap: 32px;
}
.product-card {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--ink-100);
}
.product-card:nth-child(even) { grid-template-columns: 1.2fr 1fr; }
.product-card:nth-child(even) .product-card__media { order: 2; }
.product-card__media {
  position: relative;
  background: var(--sand-100);
  min-height: 360px;
}
.product-card__body {
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}
.product-card__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--green-700);
  text-transform: uppercase;
}
.product-card__body h3 {
  font-size: clamp(28px, 3vw, 36px);
  color: var(--green-900);
}
.product-card__body p {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-700);
}

/* ---------- Form (contact) ---------- */
.form {
  display: grid;
  gap: 20px;
  max-width: 640px;
}
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form__field { display: grid; gap: 8px; }
.form__field label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-700);
  letter-spacing: 0.02em;
}
.form__field label .req { color: #c2410c; }
.form__field input,
.form__field textarea {
  padding: 12px 14px;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  font-family: inherit;
  font-size: 15px;
  color: var(--ink-900);
  transition: border-color .15s, box-shadow .15s;
}
.form__field input:focus,
.form__field textarea:focus {
  outline: none;
  border-color: var(--navy-700);
  box-shadow: 0 0 0 3px rgba(12, 59, 129, 0.15);
}
.form__field textarea { resize: vertical; min-height: 140px; }
.form__submit { justify-self: start; }
.form__note {
  font-size: 13px;
  color: var(--ink-500);
  line-height: 1.6;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-900);
  color: rgba(255,255,255,0.85);
  padding: 80px 0 32px;
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--yellow-500) 0%, var(--yellow-500) 30%, transparent 30%, transparent 100%);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
/* Footer logo: 다크 배경용 화이트 버전 SVG를 직접 사용 (필터 X) */
.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
  max-width: 280px;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: 18px;
}
.footer-col a, .footer-col li {
  display: block;
  font-size: 14.5px;
  color: rgba(255,255,255,0.85);
  padding: 4px 0;
  transition: color .15s;
}
.footer-col a:hover { color: #fff; }
.footer-col li.muted { color: rgba(255,255,255,0.6); }
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
}
.social-icons {
  display: flex;
  gap: 8px;
}
.social-icons a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: grid; place-items: center;
  color: #fff;
  transition: background .15s;
}
.social-icons a:hover { background: rgba(255,255,255,0.18); }
.social-icons svg { width: 16px; height: 16px; }

/* ---------- Page Hero (interior pages) ---------- */
.page-hero {
  padding: 88px 0 64px;
  background: var(--navy-50);
  border-bottom: 1px solid var(--navy-100);
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, var(--yellow-500) 0%, transparent 70%);
  opacity: 0.18;
  pointer-events: none;
}
.page-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  align-items: end;
  position: relative;
  z-index: 1;
}
.page-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--navy-700);
  margin-bottom: 16px;
}
.page-hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  color: var(--navy-900);
  font-weight: 800;
  line-height: 1.1;
}
.page-hero__lede {
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink-700);
  max-width: 560px;
}

/* ---------- Company-specific ---------- */
.story-block {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  align-items: start;
  margin-bottom: 80px;
}
.story-block:last-child { margin-bottom: 0; }
.story-block h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  color: var(--green-900);
  font-weight: 600;
  line-height: 1.2;
}
.story-block__body p + p { margin-top: 16px; }
.story-block__body p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-700);
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--ink-100);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 56px;
}
.info-grid__cell {
  background: var(--bg-card);
  padding: 28px 32px;
}
.info-grid__cell .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin-bottom: 8px;
}
.info-grid__cell .value {
  font-size: 17px;
  font-weight: 500;
  color: var(--green-900);
}

/* ---------- Contact-specific ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}
.contact-info { display: grid; gap: 36px; }
.contact-info__block .label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green-700);
  margin-bottom: 10px;
}
.contact-info__block .value {
  font-size: 22px;
  font-weight: 500;
  color: var(--green-900);
}
.contact-info__block .sub {
  font-size: 14.5px;
  color: var(--ink-500);
  margin-top: 6px;
}

/* ---------- Legal pages ---------- */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 0;
}
.legal h2 {
  font-size: 22px;
  color: var(--green-900);
  margin: 40px 0 16px;
}
.legal h2:first-child { margin-top: 0; }
.legal p, .legal li {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}
.legal ol, .legal ul { padding-left: 20px; margin: 12px 0; }
.legal li { padding: 2px 0; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .container { padding: 0 24px; }
  .hero { padding: 56px 0 64px; }
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { aspect-ratio: 4/3; }
  .section { padding: 64px 0; }
  .section__head { grid-template-columns: 1fr; gap: 20px; margin-bottom: 32px; }
  .feature-grid { grid-template-columns: 1fr; gap: 16px; }
  .product-card,
  .product-card:nth-child(even) { grid-template-columns: 1fr; }
  .product-card:nth-child(even) .product-card__media { order: 0; }
  .product-card__media { min-height: 240px; }
  .product-card__body { padding: 32px 28px; }
  .page-hero__inner { grid-template-columns: 1fr; gap: 24px; }
  .story-block { grid-template-columns: 1fr; gap: 24px; margin-bottom: 56px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .info-grid { grid-template-columns: 1fr; }
  .site-footer { padding: 56px 0 28px; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; margin-bottom: 40px; }

  /* Mobile nav */
  .nav-toggle {
    display: inline-flex;
    width: 40px; height: 40px;
    border: 1px solid var(--ink-200);
    background: transparent;
    border-radius: 999px;
    align-items: center;
    justify-content: center;
    color: var(--green-900);
  }
  .site-nav {
    position: absolute;
    top: 76px;
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--ink-100);
    padding: 16px 24px 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    display: none;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
  }
  .lang-switch { border-left: none; padding-left: 0; margin-left: 0; margin-top: 8px; }
  .form__row { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .site-footer__grid { grid-template-columns: 1fr; }
  .hero__stats { display: none; }
}

/* ---------- Image Placeholders ---------- */
.img-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 32px;
  text-align: center;
  background:
    repeating-linear-gradient(45deg, var(--navy-50) 0 14px, #f5f7fb 14px 28px);
  border: 2px dashed var(--navy-300);
  border-radius: inherit;
  color: var(--navy-800);
}
.img-placeholder__icon {
  width: 56px; height: 56px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  color: var(--navy-800);
  box-shadow: 0 4px 12px -4px rgba(12, 59, 129, 0.2);
}
.img-placeholder__icon svg { width: 28px; height: 28px; }
.img-placeholder__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--navy-900);
  letter-spacing: -0.01em;
}
.img-placeholder__caption {
  font-size: 13px;
  color: var(--ink-500);
  line-height: 1.6;
  max-width: 280px;
}
.img-placeholder__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--yellow-500);
  color: var(--navy-900);
  padding: 4px 10px;
  border-radius: 4px;
  font-weight: 700;
}


/* ---------- Yellow accent additions (sjct brand) ---------- */
.btn--accent {
  background: var(--yellow-500);
  color: var(--navy-900);
  font-weight: 600;
}
.btn--accent:hover { background: var(--yellow-600); transform: translateY(-1px); }

.section--navy { background: var(--navy-800); color: #fff; }
.section--navy h2, .section--navy h3 { color: #fff; }
.section--navy .section__eyebrow { color: var(--yellow-500); }
.section--navy .section__eyebrow::before { background: var(--yellow-500); }
.section--navy .section__lede { color: rgba(255,255,255,0.78); }

/* Timeline yellow dot */
.timeline__item::before { background: var(--yellow-500) !important; height: 4px !important; }
.timeline__year {
  display: inline-flex; align-items: center; gap: 10px;
}
.timeline__year::after {
  content: ""; width: 10px; height: 10px; border-radius: 50%;
  background: var(--yellow-500);
  display: inline-block;
}

/* Nav toggle yellow (mobile) */
@media (max-width: 960px) {
  .nav-toggle {
    background: var(--yellow-500) !important;
    border-color: var(--yellow-500) !important;
    color: var(--navy-900) !important;
  }
}

/* Hero variant: navy bg */
.hero--navy { background: var(--navy-800); color: #fff; }
.hero--navy h1 { color: #fff; }
.hero--navy h1 em { color: var(--yellow-500); font-style: normal; font-family: var(--font-kr); }
.hero--navy .hero__lede { color: rgba(255,255,255,0.82); }
.hero--navy .hero__eyebrow { background: rgba(255,255,255,0.08); color: var(--yellow-500); }
.hero--navy .hero__eyebrow .dot { background: var(--yellow-500); box-shadow: 0 0 0 4px rgba(244,215,31,0.25); }
.hero--navy .btn--ghost { color: #fff; border-color: rgba(255,255,255,0.4); }
.hero--navy .btn--ghost:hover { border-color: var(--yellow-500); color: var(--yellow-500); }

/* Logo improvements */
.site-logo__mark {
  display: inline-grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--navy-800);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.site-logo__wordmark {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--navy-800);
}
.site-logo { gap: 12px; }

/* Footer logo override: white circle on navy */
.site-footer { background: var(--navy-900) !important; }
.footer-brand .site-logo__mark { background: #fff; color: var(--navy-900); }
.footer-brand .site-logo__wordmark { color: #fff; }
.footer-brand .site-logo .en { color: rgba(255,255,255,0.55); }

/* Page hero on navy version */
.page-hero--navy { background: var(--navy-800); color: #fff; border-bottom: none; }
.page-hero--navy h1 { color: #fff; }
.page-hero--navy .page-hero__lede { color: rgba(255,255,255,0.78); }
.page-hero--navy .page-hero__eyebrow { color: var(--yellow-500); }

/* Anchor yellow underline accent on dark */
.section--dark a:not(.btn), .hero--navy a:not(.btn) { color: var(--yellow-500); }


/* ---------- Timeline on navy bg ---------- */
.section--navy .timeline,
.section--navy .timeline__item {
  background: transparent;
  border-color: rgba(255,255,255,0.12);
}
.section--navy .timeline {
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.03);
}
.section--navy .timeline__item {
  background: transparent;
}
.section--navy .timeline__year { color: var(--yellow-500); font-weight: 600; }
.section--navy .timeline__title { color: #fff; }
.section--navy .timeline__body { color: rgba(255,255,255,0.72); }
.section--navy .timeline__item::before { background: var(--yellow-500); }

/* ---------- Footer brand heading (주식회사 신진켐텍) ---------- */
.footer-brand__heading {
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 700;
  color: var(--yellow-500);
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.footer-brand__address {
  font-size: 14.5px;
  color: rgba(255,255,255,0.78);
  line-height: 1.7;
  margin-bottom: 12px;
}
.footer-brand__address strong {
  color: rgba(255,255,255,0.55);
  font-weight: 400;
  margin-right: 6px;
}
.footer-brand__yt-label {
  display: block;
  font-size: 14px;
  color: var(--yellow-500);
  font-weight: 500;
  margin-top: 24px;
  margin-bottom: 8px;
}

/* Re-balance footer grid: left brand is wider */
.site-footer__grid {
  grid-template-columns: 1.6fr 1fr 1fr;
}
@media (max-width: 960px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}