/* ============================================================
   SOLWITH — style.css  (Premium Redesign)
   Primary #239c52 | BG #ffffff | No icons — typography only
   ============================================================ */

/* ---------- Variables ---------- */
:root {
  --green:       #239c52;
  --green-dark:  #1b7a3f;
  --green-pale:  rgba(35,156,82,0.08);
  --green-line:  rgba(35,156,82,0.18);

  --ink:         #0d0d0d;
  --ink-80:      rgba(13,13,13,0.80);
  --ink-50:      rgba(13,13,13,0.50);
  --ink-30:      rgba(13,13,13,0.30);
  --ink-10:      rgba(13,13,13,0.07);

  --white:       #ffffff;
  --surface:     #f7f7f5;
  --border:      #e8e8e4;

  --bg-dark:     #060c14;

  --font-ko:     'Noto Sans KR', sans-serif;
  --font-en:     'Inter', sans-serif;

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

  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --trans:       0.28s var(--ease);
  --container:   1180px;
  --header-h:    68px;

  --shadow-sm:   0 2px 12px rgba(0,0,0,0.05);
  --shadow-md:   0 8px 32px rgba(0,0,0,0.09);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.11);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-ko); background: var(--white); color: var(--ink); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; word-break: keep-all; overflow-wrap: break-word; }
img  { max-width: 100%; display: block; }
a    { text-decoration: none; color: inherit; }
ul   { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
em   { font-style: normal; color: var(--green); }
.hero__title em {
  text-shadow: 0 0 48px rgba(35,156,82,0.35), 0 0 80px rgba(35,156,82,0.15);
}

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-thumb { background: var(--green); border-radius: 2px; }

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

/* ---------- Section ---------- */
.section { padding: 72px 0; }

.section-header { margin-bottom: 48px; }

.section-eyebrow {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

/* ---------- Scroll Animate ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}
.fade-up.animate { opacity: 1; transform: translateY(0); }

/* ---------- Transition Delays ---------- */
.delay-0   { transition-delay: 0.00s; }
.delay-25  { transition-delay: 0.25s; }
.delay-50  { transition-delay: 0.50s; }
.delay-75  { transition-delay: 0.75s; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-ko);
  font-size: 14px;
  font-weight: 600;
  padding: 14px 36px;
  border-radius: 100px;
  transition: var(--trans);
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.btn--primary {
  background: var(--green);
  color: var(--white);
}
.btn--primary:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(35,156,82,0.30);
}
.btn--primary:disabled {
  background: var(--ink-30);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--ink-50);
  transform: translateY(-2px);
}
.btn--full { width: 100%; justify-content: center; border-radius: var(--r-md); }
.btn--ghost-green {
  border-color: var(--green);
  color: var(--white);
}
.btn--ghost-green:hover {
  border-color: var(--green);
  background: rgba(35,156,82,0.18);
}


/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
  transition: background var(--trans), box-shadow var(--trans);
}
/* .header.scrolled — background/shadow unchanged; kept for JS hook */
.header__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header__logo img { height: 34px; width: auto; }

.header__nav { display: flex; align-items: center; gap: 40px; }

.nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-80);
  transition: color var(--trans);
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1.5px;
  background: var(--green);
  transition: width var(--trans);
}
.nav__link:hover { color: var(--ink); }
.nav__link:hover::after { width: 100%; }

.hamburger { display: none; flex-direction: column; gap: 6px; padding: 8px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--ink); transition: var(--trans); border-radius: 2px; }
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }


/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  height: 100svh;
  height: var(--hero-vh, 100svh);
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    105deg,
    rgba(6,12,20,0.97) 0%,
    rgba(6,12,20,0.90) 30%,
    rgba(6,12,20,0.50) 58%,
    rgba(6,12,20,0.08) 100%
  );
  z-index: 0;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  padding-top: var(--header-h);
}

.hero__eyebrow {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 28px;
  animation: fadeUp 0.7s var(--ease) both, textShimmer 4s linear 0.7s infinite;
  background: linear-gradient(90deg,
    var(--green) 0%,
    #6ee49a 40%,
    var(--green) 60%,
    var(--green) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
@keyframes textShimmer {
  to { background-position: -200% center; }
}

.hero__title {
  font-size: clamp(44px, 7vw, 88px);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 28px;
  animation: fadeUp 0.7s var(--ease) 0.08s both;
}

.hero__desc {
  font-size: clamp(15px, 1.8vw, 18px);
  font-weight: 400;
  color: rgba(255,255,255,0.62);
  line-height: 1.85;
  margin-bottom: 44px;
  max-width: 480px;
  animation: fadeUp 0.7s var(--ease) 0.16s both;
}
.br-mobile { display: none; }

.hero__scroll {
  position: absolute;
  bottom: 40px; left: 0; right: 0;
  width: fit-content;
  margin: 0 auto;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  animation: fadeUp 0.7s var(--ease) 0.24s both;
  transition: color var(--trans);
}
.hero__scroll:hover { color: var(--green); }
.hero__scroll-text {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 2px; height: 40px;
  background: linear-gradient(to bottom, var(--green), transparent);
  animation: scrollPulse 2.2s ease-in-out infinite;
}
.hero__scroll-arrow {
  width: 18px; height: 18px;
  animation: scrollArrowBounce 2.2s ease-in-out infinite;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50%       { opacity: 0.4; transform: scaleY(0.7); }
}
@keyframes scrollArrowBounce {
  0%, 100% { transform: translateY(0);   opacity: 0.6; }
  50%      { transform: translateY(6px); opacity: 1; }
}


/* ============================================================
   ABOUT
   ============================================================ */
.about { background: var(--surface); }

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about__text .section-eyebrow { margin-bottom: 16px; }
.about__text .section-title { margin-bottom: 28px; }

.about__desc {
  font-size: 15px;
  font-weight: 400;
  color: var(--ink-50);
  line-height: 1.9;
  margin-bottom: 20px;
}
.about__desc--mobile { display: none; }

.about__keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.about__keywords span {
  font-size: 12px;
  font-weight: 500;
  color: var(--green);
  border: 1px solid var(--green-line);
  padding: 5px 14px;
  border-radius: 100px;
}

/* About Values — numbered list */
.about__values {
  display: flex;
  flex-direction: column;
}
.about__value {
  display: grid;
  grid-template-columns: 40px 1fr;
  grid-template-rows: auto auto;
  gap: 0 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  transition: var(--trans);
}
.about__value:first-child { border-top: 1px solid var(--border); }
.about__value:hover { padding-left: 8px; }

.about__value-num {
  grid-column: 1;
  grid-row: 1 / 3;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--green);
  padding-top: 3px;
}
.about__value strong {
  grid-column: 2;
  grid-row: 1;
  display: block;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 6px;
}
.about__value p {
  grid-column: 2;
  grid-row: 2;
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-50);
  line-height: 1.65;
}


/* ============================================================
   CORE 4  — 3D 카드 그리드
   ============================================================ */
.core {
  background: var(--bg-dark);
  padding-bottom: 48px;
  position: relative;
}
.core .container {
  position: relative;
  z-index: 1;
}

/* 다크 배경 위 섹션 헤더 텍스트 */
.core .section-title   { color: var(--white); }
.core .section-eyebrow { color: var(--green); }

.core__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.core-item {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 52px 48px;
  background: var(--white);
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow:
    0 2px 4px rgba(0,0,0,0.04),
    0 6px 20px rgba(0,0,0,0.07),
    inset 0 1px 0 rgba(255,255,255,1);
  opacity: 0;
  transition:
    opacity   0.65s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.75s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.45s var(--ease);
  will-change: transform, opacity;
}

/* ── 초기 스택 위치: 4장이 그리드 중앙에 쌓인 상태 ── */
.core-item:nth-child(1) {
  transform: perspective(1200px) rotateZ(-14deg) rotateX(22deg)
    translateX(calc(50% + 11px)) translateY(calc(50% + 11px)) scale(0.80);
  transition-delay: 0.00s;
}
.core-item:nth-child(2) {
  transform: perspective(1200px) rotateZ( 11deg) rotateX(22deg)
    translateX(calc(-50% - 11px)) translateY(calc(50% + 11px)) scale(0.80);
  transition-delay: 0.25s;
}
.core-item:nth-child(3) {
  transform: perspective(1200px) rotateZ( 10deg) rotateX(22deg)
    translateX(calc(50% + 11px)) translateY(calc(-50% - 11px)) scale(0.80);
  transition-delay: 0.50s;
}
.core-item:nth-child(4) {
  transform: perspective(1200px) rotateZ(-8deg) rotateX(22deg)
    translateX(calc(-50% - 11px)) translateY(calc(-50% - 11px)) scale(0.80);
  transition-delay: 0.75s;
}

/* ── 펼침 완료 상태 ── */
.core__list.is-spread .core-item {
  opacity: 1;
  transform: none;
}

/* 배경 워터마크 숫자 */
.core-item::before {
  content: attr(data-num);
  position: absolute;
  right: -6px; bottom: -18px;
  font-family: var(--font-en);
  font-size: 170px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(35,156,82,0.055);
  pointer-events: none;
  user-select: none;
  transition: color 0.45s var(--ease), transform 0.45s var(--ease);
}

/* hover 시 상단 green 라인 */
.core-item::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green) 0%, #6ee49a 50%, var(--green) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}

.core-item:hover {
  box-shadow:
    0 20px 60px rgba(0,0,0,0.13),
    0 6px 20px rgba(35,156,82,0.10),
    0 0 0 1px rgba(35,156,82,0.14);
}
.core-item:hover::before {
  color: rgba(35,156,82,0.10);
  transform: scale(1.05) translate(4px, -10px);
}
.core-item:hover::after { transform: scaleX(1); }

.core-item__left {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.core-item__num {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--green);
}

.core-item__title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.15;
}

.core-item__title small {
  font-size: 0.6em;
  font-weight: 500;
  opacity: 0.7;
}

.core-item__desc {
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-50);
  line-height: 1.85;
  margin-bottom: 20px;
}

.core-item__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}
.core-item__list li {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-80);
  padding-left: 16px;
  position: relative;
}
.core-item__list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--green);
  font-size: 12px;
}

.core-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}
.core-item__tags span {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-50);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 100px;
  transition: var(--trans);
}
.core-item:hover .core-item__tags span {
  border-color: var(--green-line);
  color: var(--green);
}


/* ============================================================
   WHY SOLWITH
   ============================================================ */
.why {
  background: var(--ink);
  position: relative;
}
.why .container {
  position: relative;
  z-index: 1;
}

.why__header {
  margin-bottom: 48px;
}
.why__eyebrow { color: var(--green); }
.why__title {
  font-size: clamp(28px, 3.5vw, 46px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--white);
  line-height: 1.15;
}

.why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.why-item {
  padding: 40px 32px;
  background: var(--white);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 4px rgba(0,0,0,0.04), 0 6px 20px rgba(0,0,0,0.07);
  transition: transform 0.35s var(--ease), box-shadow 0.35s, border-color 0.35s;
}
.why-item::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green) 0%, #6ee49a 50%, var(--green) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.why-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.13), 0 0 0 1px rgba(35,156,82,0.18);
  border-color: rgba(35,156,82,0.25);
}
.why-item:hover::after { transform: scaleX(1); }

.why-item__num {
  display: block;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--green);
  margin-bottom: 20px;
}
.why-item__title {
  display: block;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 14px;
  line-height: 1.3;
}
.why-item__desc {
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-50);
  line-height: 1.8;
}


/* ============================================================
   TRACK RECORD
   ============================================================ */
.rd { background: var(--surface); }

/* KPI 수치 4칸 */
.rd__kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}
.rd__kpi {
  text-align: center;
  padding: 32px 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
}
.rd__kpi--startup { order: -1; }
.rd__kpi-num {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(28px, 3.5vw, 46px);
  font-weight: 800;
  color: var(--green);
  letter-spacing: -0.03em;
  line-height: 1;
}
.rd__kpi-num em {
  font-size: 0.42em;
  font-weight: 600;
  color: var(--ink-50);
  margin-left: 2px;
}
.rd__kpi-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-50);
  margin-top: 10px;
  letter-spacing: 0.04em;
}

/* 납품 실적 카드 */
.rd__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.rd-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}
.rd-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green), #6ee49a);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.rd-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.09);
}
.rd-card:hover::after { transform: scaleX(1); }

.rd-card__badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 100px;
  margin-bottom: 14px;
}
.rd-card__badge--factory { background: rgba(35,156,82,0.10); color: var(--green); }
.rd-card__badge--farm    { background: rgba(13,148,136,0.10); color: #0d9488; }
.rd-card__badge--robot   { background: rgba(180,82,35,0.10); color: #b45220; }
.rd-card__badge--consulting { background: rgba(35,82,200,0.10); color: #2352c8; }

.rd-card__title {
  display: block;
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 10px;
  letter-spacing: -0.015em;
}
.rd-card__desc {
  font-size: 13px;
  color: var(--ink-50);
  line-height: 1.78;
  margin-bottom: 18px;
}
.rd-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.rd-card__tags li {
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-30);
  background: var(--surface);
  padding: 3px 10px;
  border-radius: 100px;
  transition: var(--trans);
}
.rd-card:hover .rd-card__tags li {
  background: rgba(35,156,82,0.10);
  color: var(--green);
}


/* ============================================================
   CONTACT
   ============================================================ */
.contact { background: var(--surface); padding-bottom: 0; }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
}

.contact__info {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.contact__info .section-eyebrow { margin-bottom: 16px; }
.contact__info .section-title   { margin-bottom: 24px; }

/* Contact details — definition list style */
.contact__details { display: flex; flex-direction: column; margin-top: auto; margin-bottom: auto; }

.contact-detail {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 0 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
}
.contact-detail:first-child { border-top: 1px solid var(--border); }

@media (min-width: 1025px) {
  .contact-detail { padding: 30px 0; }
}

.contact-detail dt {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  padding-top: 2px;
}
.contact-detail dd {
  font-size: 14px;
  color: var(--ink-80);
  line-height: 1.6;
}
/* Form */
.contact__form-wrap {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 48px 44px;
  display: flex;
  flex-direction: column;
}

.contact__form { display: flex; flex-direction: column; gap: 20px; flex: 1; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-group label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink-80);
  text-transform: uppercase;
}
.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-ko);
  font-size: 14px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 12px 16px;
  transition: border-color var(--trans), box-shadow var(--trans);
  outline: none;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
}
.form-group textarea { resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--green);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(35,156,82,0.10);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--ink-30); }

.form-consent {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 14px 16px;
}
.form-consent__label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.form-consent__checkbox {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.form-consent__checkbox input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin: 0;
  border-radius: 50%;
  border: 2px solid var(--ink-30);
  background: var(--white);
  cursor: pointer;
  position: relative;
  z-index: 1;
  transition: border-color var(--trans), background var(--trans);
}
.form-consent__checkbox input[type="checkbox"]:checked {
  border-color: var(--green);
  background: var(--green);
}
.form-consent__checkbox-mark {
  position: absolute;
  left: 50%;
  top: 45%;
  width: 5px;
  height: 9px;
  border: solid var(--white);
  border-width: 0 2px 2px 0;
  transform: translate(-50%, -50%) rotate(45deg) scale(0);
  opacity: 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
  pointer-events: none;
  z-index: 2;
}
.form-consent__checkbox input[type="checkbox"]:checked ~ .form-consent__checkbox-mark {
  transform: translate(-50%, -50%) rotate(45deg) scale(1);
  opacity: 1;
}
.form-consent__checkbox-ripple {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
}
.form-consent__checkbox input[type="checkbox"]:checked ~ .form-consent__checkbox-ripple {
  animation: checkbox-ripple 0.6s ease-out;
}
@keyframes checkbox-ripple {
  0%   { box-shadow: 0 0 0 0 rgba(35,156,82,0.45); }
  100% { box-shadow: 0 0 0 10px rgba(35,156,82,0); }
}
.form-consent__title {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-80);
}
.form-consent__info {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--ink-30);
  background: transparent;
  color: var(--ink-30);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--trans);
}
.form-consent__info:hover {
  border-color: var(--green);
  color: var(--green);
}
.form-consent__info[aria-expanded="true"] {
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
}
.form-consent__desc {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: calc(100% + 14px);
  margin: 0;
  padding: 14px 16px;
  background: var(--ink);
  border: none;
  border-radius: var(--r-sm);
  font-size: 11px;
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
  box-shadow: 0 14px 32px rgba(0,0,0,0.2);
  z-index: 5;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(6px) scale(0.98);
  transform-origin: bottom right;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
}
.form-consent__desc.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.form-group__hint {
  font-size: 11px;
  font-weight: 400;
  text-transform: none;
  color: var(--ink-30);
  letter-spacing: normal;
}

.interest-select { position: relative; }
.interest-select__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  font-family: var(--font-ko);
  font-size: 14px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 12px 16px;
  cursor: pointer;
  transition: border-color var(--trans), background var(--trans);
}
.interest-select__btn svg { width: 16px; height: 16px; color: var(--ink-30); flex-shrink: 0; transition: transform var(--trans); }
.interest-select__btn[aria-expanded="true"] { border-color: var(--green); background: var(--white); }
.interest-select__btn[aria-expanded="true"] svg { transform: rotate(180deg); }
.interest-select__panel {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 6px);
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  box-shadow: 0 14px 32px rgba(0,0,0,0.12);
  padding: 6px;
  z-index: 6;
}
.interest-select__panel[hidden] { display: none; }
.interest-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px;
  font-size: 13px;
  color: var(--ink-80);
  border-radius: var(--r-sm);
  cursor: pointer;
}
.interest-option:hover { background: var(--surface); }
.interest-option[aria-selected="true"] { background: var(--green); color: var(--white); }
.interest-select__other-row {
  display: grid;
  grid-template-rows: 0fr;
  overflow: hidden;
  opacity: 0;
  transition: grid-template-rows 0.25s var(--ease), opacity 0.2s var(--ease);
}
.interest-select__other-row.is-open { grid-template-rows: 1fr; opacity: 1; }
.interest-select__other-row-inner {
  display: flex;
  gap: 6px;
  padding: 0 10px 4px;
  overflow: hidden;
  min-height: 0;
}
.interest-select__other-input {
  flex: 1;
  min-width: 0;
  font-family: var(--font-ko);
  font-size: 13px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 9px 12px;
  outline: none;
}
.interest-select__other-input:focus { border-color: var(--green); background: var(--white); }
.interest-select__other-btn {
  flex-shrink: 0;
  font-family: var(--font-ko);
  font-size: 12px;
  font-weight: 700;
  color: var(--white);
  background: var(--green);
  border: none;
  border-radius: var(--r-sm);
  padding: 0 14px;
  cursor: pointer;
  transition: background var(--trans);
}
.interest-select__other-btn:hover { background: var(--green-dark); }

.form-toast {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: rgba(255,255,255,0.75);
  border-radius: inherit;
  z-index: 5;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 1.3s var(--ease), visibility 1.3s;
}
.form-toast.show { opacity: 1; visibility: visible; pointer-events: auto; }
.form-toast__check {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--green);
}
.form-toast__check::before,
.form-toast__check::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: 50%;
  border: 2px solid var(--green);
  opacity: 0;
}
.form-toast.show .form-toast__check::before,
.form-toast.show .form-toast__check::after {
  animation: form-toast-ripple 1.2s ease-out infinite;
}
.form-toast.show .form-toast__check::after { animation-delay: 0.4s; }
.form-toast__check-mark {
  width: 22px;
  height: 12px;
  border: solid var(--white);
  border-width: 0 0 3px 3px;
  transform: translateY(-2px) rotate(-45deg);
}
@keyframes form-toast-ripple {
  0%   { transform: scale(1);   opacity: 0.6; }
  100% { transform: scale(1.8); opacity: 0; }
}
.form-toast__text { font-size: 14px; font-weight: 700; color: var(--ink); }


/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--ink); padding: 72px 0 0; }

.footer__brand {
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer__logo {
  height: 28px;
  filter: brightness(0) invert(1);
  opacity: 0.85;
  margin-bottom: 18px;
}
.footer__slogan {
  font-size: 13px;
  color: rgba(255,255,255,0.38);
  line-height: 1.7;
}
.footer__bottom {
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.footer__bottom p { font-size: 12px; color: rgba(255,255,255,0.25); }
.footer__contact-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  font-size: 12px;
  color: rgba(255,255,255,0.35);
}

/* ============================================================
   ABOUT ACCORDION GROUP  (회사소개 내 연혁 / 조직도 / 인증·수상)
   ============================================================ */
.about__acc-group {
  margin-top: 80px;
  border-top: 1px solid var(--border);
}

/* 가로 버튼 3개 행 + 그 아래 패널(PC) */
.about__acc-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.about__acc-tabs > .about-tab-btn:nth-of-type(1) { grid-column: 1; grid-row: 1; }
.about__acc-tabs > .about-tab-btn:nth-of-type(2) { grid-column: 2; grid-row: 1; }
.about__acc-tabs > .about-tab-btn:nth-of-type(3) { grid-column: 3; grid-row: 1; }
.about__acc-tabs > .acc-panel { grid-column: 1 / -1; grid-row: 2; }

/* 가로 탭 버튼 개별 스타일 */
.about-tab-btn {
  width: 100%;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 36px 32px 32px;
  min-height: 170px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  border-radius: 0;
  text-align: center;
  cursor: pointer;
  background: transparent;
  font-family: inherit;
  transition: var(--trans);
}
.about-tab-btn:last-child { border-right: none; }

/* 가로 탭 전용 화살표 (PC: 위쪽 → 열리면 아래쪽 / 모바일: 왼쪽 → 열리면 아래쪽) */
.tab-plus {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  border: 1.5px solid var(--ink-30);
  border-radius: 50%;
  position: relative;
  transition: background 0.28s, border-color 0.28s;
}
.tab-plus::before {
  content: '';
  width: 8px;
  height: 8px;
  border-style: solid;
  border-color: var(--ink);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  transition: border-color 0.28s, transform 0.28s;
}
.about-tab-btn:hover .tab-plus {
  background: var(--green);
  border-color: var(--green);
}
.about-tab-btn:hover .tab-plus::before {
  border-color: var(--white);
}
.about-tab-btn[aria-expanded="true"] .tab-plus {
  background: var(--ink);
  border-color: var(--ink);
}
.about-tab-btn[aria-expanded="true"] .tab-plus::before {
  border-color: var(--white);
  transform: rotate(-135deg);
}
.about-tab-btn:hover { background: var(--green-pale); }
.about-tab-btn[aria-expanded="true"] {
  background: var(--green-pale);
  border-bottom-color: transparent;
}

.about-tab-btn__text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.about-tab-btn__title {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.2;
  transition: color var(--trans);
}
.about-tab-btn:hover .about-tab-btn__title,
.about-tab-btn[aria-expanded="true"] .about-tab-btn__title { color: var(--green); }

.acc-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 44px 0;
  cursor: pointer;
  background: transparent;
  text-align: left;
  border-bottom: 1px solid var(--border);
  transition: var(--trans);
}
.acc-btn[aria-expanded="true"] { border-bottom-color: transparent; }

.acc-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.acc-panel .history__list { margin-bottom: 72px; }
.acc-panel .org-chart     { padding: 60px 0 72px; }
.acc-panel .certs__grid   { margin: 60px auto 72px; }


/* ============================================================
   HISTORY
   ============================================================ */
.history__list { border-top: 1px solid var(--border); }

.history-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 0 64px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
  transition: background var(--trans);
}
.history-row:hover { background: var(--surface); }

.history-row__year {
  font-family: var(--font-en);
  font-size: 52px;
  white-space: nowrap;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--ink);
  line-height: 1;
}
.history-row:last-child .history-row__year { color: var(--green); }

.history-row__year-wrap { display: flex; flex-direction: column; align-items: stretch; gap: 8px; width: fit-content; }
.history-row__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  box-sizing: border-box;
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--white);
  border: 1px solid rgba(35,156,82,0.3);
  padding: 4px 9px;
  border-radius: 100px;
}
.history-row__badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: history-badge-pulse 1.4s ease-in-out infinite;
}
@keyframes history-badge-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(0.7); }
}

.history-row__events {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 8px;
}

.history-row__col-hint {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--ink-30);
  min-width: 24px;
}

.history-event {
  display: flex;
  align-items: center;
  gap: 20px;
}
.history-event__q {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--green);
  min-width: 24px;
}
.history-event__text {
  font-size: 15px;
  color: var(--ink-80);
  line-height: 1.5;
}


/* ============================================================
   ORG CHART
   ============================================================ */
.org-chart {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.org-chart__top {
  display: flex;
  align-items: flex-start;
  gap: 40px;
  justify-content: center;
  width: 100%;
}

.org-chart__ceo { width: 220px; }

.org-chart__rnd {
  display: flex;
  justify-content: center;
}

.org-box--advisor {
  width: 220px;
  border: 1px dashed var(--green);
  background: rgba(35,156,82,0.04);
}

.org-box {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 18px 24px;
  text-align: center;
}
.org-box--ceo { border: 2px solid var(--green); }

.org-box__label {
  display: block;
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--green);
  margin-bottom: 4px;
}
.org-box__title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.org-chart__connector-v {
  width: 1px;
  height: 36px;
  background: var(--border);
}

.org-chart__depts {
  display: flex;
  width: 100%;
  position: relative;
}
.org-chart__depts::before {
  content: '';
  position: absolute;
  top: 0;
  left: 16.6667%;
  right: 16.6667%;
  height: 1px;
  background: var(--border);
}

.org-dept {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 36px 20px 0;
  position: relative;
}

.org-dept::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 36px;
  background: var(--border);
}

.org-box--dept {
  width: 100%;
  margin-bottom: 20px;
}

.org-chart__connector-h { display: none; }


/* ============================================================
   CERTIFICATIONS
   ============================================================ */
.certs__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.cert-item {
  background: var(--white);
  padding: 36px 28px;
  display: flex;
  align-items: center;
  text-align: center;
  flex-direction: column;
  gap: 20px;
  transition: background var(--trans);
}
.cert-item:hover { background: var(--surface); }

.cert-item__img-wrap {
  aspect-ratio: 3 / 4;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.cert-item__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px;
}
.cert-item__info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.cert-item__name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1.3;
}
.cert-item__issuer {
  font-size: 13px;
  color: var(--ink-50);
}
.cert-item__year {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--green);
  margin-top: 4px;
}


/* ============================================================
   RESPONSIVE — Tablet ≤1024px
   ============================================================ */
@media (max-width: 1024px) {
  .section { padding: 56px 0; }

  .core-item { padding: 40px 32px; }
  .core-item::before { font-size: 130px; }

  .about__grid { grid-template-columns: 1fr; gap: 56px; }
  .about-tab-btn { padding: 28px 24px; min-height: 150px; gap: 20px; }

  .history-row { gap: 0 40px; }

  .certs__grid { grid-template-columns: repeat(2, 1fr); }

  /* Track Record */
  .rd__kpis  { grid-template-columns: repeat(2, 1fr); }
  .rd__kpi--startup { grid-column: 1 / -1; order: -1; }
  .rd__cards { grid-template-columns: repeat(2, 1fr); }

  .why__grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  .contact__grid { grid-template-columns: 1fr; gap: 48px; }
}

/* ============================================================
   RESPONSIVE — Mobile ≤768px
   ============================================================ */
@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .section { padding: 40px 0; }
  .container { padding: 0 20px; }

  /* ── Header ── */
  .header {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    will-change: transform;
    background: rgba(255,255,255,0.98);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    overflow: visible;
  }
  .header__nav {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0 0 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.10);
    border-top: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: max-height 0.35s ease, opacity 0.25s ease;
    z-index: 999;
  }
  .header__nav.open {
    max-height: 400px;
    opacity: 1;
    pointer-events: all;
  }
  .nav__link {
    font-size: 16px;
    font-weight: 600;
    width: 100%;
    text-align: left;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    color: var(--ink);
  }
  .nav__link:last-of-type { border-bottom: none; }
  .nav__link::after { display: none; }
  .hamburger { display: flex; z-index: 1001; }

  /* ── Hero ── */
  .hero__overlay {
    background: linear-gradient(
      180deg,
      rgba(6,12,20,0.97) 0%,
      rgba(6,12,20,0.93) 50%,
      rgba(6,12,20,0.80) 100%
    );
  }
  .hero__content { padding: 0 20px; padding-top: var(--header-h); }
  .hero__title { font-size: clamp(34px, 9vw, 52px); }
  .hero__desc { font-size: 14px; line-height: 1.75; }
  .br-mobile  { display: inline; }
  .br-desktop { display: none; }
  .hero__scroll { bottom: 24px; }

  /* ── About accordion 탭 — 3열 → 1열 세로 스택, 버튼 바로 아래에 패널 ── */
  .about__acc-tabs { grid-template-columns: 1fr; }
  .about__acc-tabs > .about-tab-btn:nth-of-type(1),
  .about__acc-tabs > .about-tab-btn:nth-of-type(2),
  .about__acc-tabs > .about-tab-btn:nth-of-type(3),
  .about__acc-tabs > .acc-panel {
    grid-column: auto;
    grid-row: auto;
  }
  .about-tab-btn {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    min-height: auto;
    padding: 26px 28px;
    gap: 16px;
    border-right: none;
    border-bottom: 1px solid var(--border);
    text-align: left;
  }
  .about-tab-btn__text { align-items: flex-start; }
  .about-tab-btn__title { font-size: 18px; }
  .about__desc--desktop { display: none; }
  .about__desc--mobile  { display: block; }
  .tab-plus::before { transform: rotate(45deg); }
  .about-tab-btn[aria-expanded="true"] .tab-plus::before { transform: rotate(135deg); }
  .about-tab-btn:hover { background: transparent; }

  /* ── Accordion (공통) ── */
  .acc-btn { padding: 28px 0; gap: 16px; }

  /* ── History ── */
  .history-row { grid-template-columns: 64px 1fr; gap: 0 28px; padding: 24px 0; }
  .history-row__year { font-size: 30px; }
  .history-row__badge { font-size: 9px; padding: 3px 7px; gap: 4px; }
  .history-row__badge::before { width: 5px; height: 5px; }
  .history-event { gap: 10px; }
  .history-event__text { font-size: 13px; }

  /* ── Org Chart ── */
  .org-chart__top { flex-direction: column; align-items: center; gap: 20px; }
  .org-chart__rnd { width: 100%; }
  .org-box--advisor { width: 100%; max-width: 300px; }
  .org-chart__depts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-areas:
      "business    business"
      "connector   connector"
      "mgmt        sales";
    column-gap: 12px;
    row-gap: 0;
    background: transparent;
  }
  .org-chart__depts::before { display: none; }
  .org-dept {
    border-right: none; border-top: none;
    padding: 0;
    flex-direction: column; align-items: center;
    background: transparent; gap: 12px;
  }
  .org-dept::before { display: none; }
  .org-box--dept { width: 100%; min-width: unset; margin-bottom: 0; }
  .org-dept--business { grid-area: business; }
  .org-dept--business .org-box--dept { max-width: none; margin: 0 auto; }
  .org-dept--mgmt { grid-area: mgmt; }
  .org-dept--sales { grid-area: sales; }

  /* 기술사업부 → 경영지원/영업으로 뻗는 연결선 (모바일 트리 구조) */
  .org-chart__connector-h {
    display: block;
    grid-area: connector;
    position: relative;
    height: 32px;
  }
  .org-chart__connector-h-stub {
    position: absolute;
    top: 0;
    width: 1px; height: 32px;
    background: var(--border);
  }
  .org-chart__connector-h-stub--l { left: 25%; }
  .org-chart__connector-h-stub--r { right: 25%; }

  /* ── Certs ── */
  .certs__grid { grid-template-columns: repeat(2, 1fr); }
  .cert-item { padding: 20px 14px; flex-direction: column; align-items: center; gap: 12px; }
  .cert-item__img-wrap { width: 72px; }
  .cert-item__info { align-items: center; text-align: center; }
  .cert-item__name { font-size: 13px; }
  .cert-item__issuer { font-size: 11px; }

  /* ── Core 사업 카드 ── */
  .core { overflow: hidden; }
  .core__list { grid-template-columns: 1fr; gap: 16px; }
  .core-item { padding: 32px 24px; }
  .core-item::before { font-size: 100px; right: -4px; bottom: -8px; }
  .core-item:nth-child(1),
  .core-item:nth-child(2),
  .core-item:nth-child(3),
  .core-item:nth-child(4) {
    transform: perspective(800px) rotateX(30deg) translateY(50px) scale(0.92);
  }
  .core-item:nth-child(1) { transition-delay: 0.00s; }
  .core-item:nth-child(2) { transition-delay: 0.25s; }
  .core-item:nth-child(3) { transition-delay: 0.50s; }
  .core-item:nth-child(4) { transition-delay: 0.75s; }
  .core-item__left {
    flex-direction: row; align-items: center; gap: 14px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px; margin-bottom: 18px;
  }
  .core-item__title { font-size: 20px; }

  /* ── Track Record ── */
  .rd__kpis  { grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 24px; }
  .rd__kpi   { padding: 20px 12px; }
  .rd__cards { grid-template-columns: 1fr; gap: 14px; }
  .rd-card   { padding: 22px; }

  /* ── Why ── */
  .why__grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .why-item { padding: 24px 20px; }
  .why-item:hover { transform: none; box-shadow: 0 2px 4px rgba(0,0,0,0.04), 0 6px 20px rgba(0,0,0,0.07); }
  .why-item__title { font-size: 16px; }
  .why-item__desc  { font-size: 13px; }

  /* ── Contact ── */
  .contact__form-wrap { padding: 24px 20px; }
  .form-row { grid-template-columns: 1fr; }

  /* ── Footer ── */
  .footer__bottom { flex-direction: column; gap: 10px; text-align: center; }
  .footer__contact-summary { justify-content: center; }
}

/* ============================================================
   RESPONSIVE — Small ≤480px
   ============================================================ */
@media (max-width: 480px) {
  .section-title { font-size: 28px; }
  .hero__title { font-size: 36px; }
  .why__title { font-size: 24px; }
  .contact-detail { grid-template-columns: 60px 1fr; }
  .history-row__year { font-size: 26px; }
  .history-row__badge { font-size: 8px; padding: 3px 6px; }
  .org-chart__depts { grid-template-columns: repeat(2, 1fr); }
  .org-box--dept { width: 100%; }
}

/* ============================================================
   LOCATION MAP SECTION
   ============================================================ */
.map-section {
  padding: 0 0 72px;
  background: var(--surface);
}

/* 전체 카드 래퍼 */
.map__card {
  background: var(--white);
  border: 1px solid rgba(0,0,0,0.07);
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  overflow: hidden;
}

/* 지도 + 우측 버튼 레이아웃 */
.map__layout {
  display: flex;
}

/* 지도 패널 */
.map__body {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.map__panel {
  width: 100%;
  height: 440px;
}

/* 우측 선택 버튼 */
.map__side {
  display: flex;
  flex-direction: column;
  width: 180px;
  flex-shrink: 0;
  border-left: 1px solid rgba(0,0,0,0.07);
}

.map__selector {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: none;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  background: var(--surface);
  color: var(--ink-50);
  font-size: 15px;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  box-shadow: inset -3px 0 0 rgba(0,0,0,0.12);
  transition: background 0.2s, color 0.2s;
}

.map__selector:last-child { border-bottom: none; }

.map__selector:hover {
  background: rgba(35,156,82,0.06);
  color: var(--green);
}

.map__selector.active {
  background: var(--white);
  color: var(--green);
  box-shadow: inset -3px 0 0 var(--green);
}

/* 주소 텍스트박스 */
.map__addr-box {
  border-top: 1px solid rgba(0,0,0,0.06);
  background: var(--white);
}

.map__addr {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  font-size: 14px;
  color: var(--ink-50);
}

.map__addr.active {
  display: flex;
}

.map__addr-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--green);
}

@media (max-width: 768px) {
  .map__layout   { flex-direction: column; }
  .map__side     { flex-direction: row; width: 100%; border-left: none; border-top: 1px solid rgba(0,0,0,0.07); }
  .map__selector { font-size: 13px; padding: 14px 4px; border-bottom: none; border-right: 1px solid rgba(0,0,0,0.06); box-shadow: inset 0 -3px 0 rgba(0,0,0,0.12); }
  .map__selector:last-child { border-right: none; }
  .map__selector.active { box-shadow: inset 0 -3px 0 var(--green); }
  .map__panel    { height: 300px; }
}