/* 네다바웨이 v3 — 디자인 시스템
   잉크블랙·구리·오프화이트 / Noto Serif KR + Pretendard / 여백 고급감 */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css');
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+KR:wght@400;500;600;700;800;900&display=swap');

:root {
  /* 2026-04-30 코발트블루 컨셉 */
  --c-cobalt: #1E40AF;
  --c-cobalt-deep: #1E3A8A;
  --c-cobalt-soft: #3B82F6;
  --c-cobalt-bg: #EFF4FB;
  --c-cobalt-tint: rgba(30, 64, 175, .08);
  --c-cobalt-line: #C7D2FE;
  --c-ink: #1A1A1A;
  --c-copper: #1E40AF;
  --c-bg: #FAFAF7;
  --c-surface: #FFFFFF;
  --c-line: #E8E6E0;
  --c-line2: #D6D3CA;
  --c-mute: #6B6B6B;
  --c-mute2: #9A9A9A;
  --c-green: #10803D;
  --ff: 'Pretendard Variable', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  --ff-serif: 'Noto Serif KR', Georgia, serif;
  --w-max: 1180px;
  --w-narrow: 820px;
}

* , *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--ff);
  background: var(--c-bg);
  color: var(--c-ink);
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--c-copper); }
img { max-width: 100%; height: auto; display: block; }
button { font: inherit; background: none; border: none; cursor: pointer; color: inherit; }

/* 네비 */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 247, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-line);
}
.nav__inner {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.nav__logo {
  font-family: var(--ff-serif);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}
.nav__links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav__link {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-mute);
  position: relative;
  padding: 6px 0;
}
.nav__link:hover, .nav__link--active {
  color: var(--c-ink);
}
.nav__link--active::after {
  content: ""; position: absolute; bottom: 0; left: 0; right: 0;
  height: 2px; background: var(--c-copper);
}
.nav__cta {
  font-size: 0.84rem;
  padding: 9px 18px;
  border-radius: 999px;
  background: var(--c-ink);
  color: var(--c-bg);
  font-weight: 600;
}
.nav__cta:hover { background: var(--c-copper); color: #fff; }
.nav__toggle { display: none; font-size: 1.4rem; }
@media (max-width: 820px) {
  .nav__links { display: none; }
  .nav__links.is-open {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--c-bg); border-bottom: 1px solid var(--c-line);
    padding: 20px 28px; gap: 18px;
  }
  .nav__toggle { display: block; }
}

/* 마스트헤드 (페이지 헤더) */
.masthead {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 80px 28px 40px;
  border-bottom: 1px solid var(--c-line);
}
.kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-mute);
  margin-bottom: 18px;
}
.h1 {
  font-family: var(--ff-serif);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
  color: var(--c-ink);
}
.h1 em { font-style: italic; color: var(--c-copper); font-weight: 700; }
.lead {
  color: var(--c-mute);
  max-width: 680px;
  font-size: 1.05rem;
  line-height: 1.85;
}

/* 섹션 */
.wrap {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 64px 28px;
}
.wrap--narrow {
  max-width: var(--w-narrow);
}
.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--c-line);
}
.section:last-child { border-bottom: none; }
.section__head {
  margin-bottom: 36px;
}
.section__title {
  font-family: var(--ff-serif);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.section__hint {
  color: var(--c-mute);
  font-size: 1rem;
  max-width: 580px;
}

/* 통계 바 (KLC식) */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 28px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: 14px;
  padding: 28px 32px;
  margin: 24px 0;
}
.stats__cell { text-align: center; }
.stats__num {
  font-family: var(--ff-serif);
  font-size: 2rem;
  font-weight: 800;
  color: var(--c-ink);
}
.stats__num em {
  color: var(--c-copper);
  font-style: normal;
}
.stats__label {
  font-size: 0.78rem;
  color: var(--c-mute);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 4px;
}

/* 카드 그리드 */
.grid {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .grid--3 { grid-template-columns: 1fr 1fr 1fr; } }
@media (min-width: 960px) { .grid--4 { grid-template-columns: 1fr 1fr 1fr 1fr; } }

.card {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: 14px;
  padding: 28px 26px;
  transition: all 0.22s;
  display: block;
  position: relative;
  overflow: hidden;
}
.card:hover {
  border-color: var(--c-line2);
  transform: translateY(-2px);
  color: inherit;
}
.card__abbr {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-copper);
  margin-bottom: 10px;
}
.card__title {
  font-family: var(--ff-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  line-height: 1.35;
}
.card__desc {
  font-size: 0.92rem;
  color: var(--c-mute);
  line-height: 1.75;
  margin-bottom: 16px;
}
.card__more {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-copper);
}

/* 신뢰 로고 (익명 분야 표기) */
.logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 18px;
  margin-top: 28px;
}
.logo {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: 10px;
  padding: 22px 18px;
  text-align: center;
  font-size: 0.86rem;
  color: var(--c-mute);
  font-weight: 500;
  transition: border-color 0.2s;
}
.logo:hover { border-color: var(--c-copper); color: var(--c-ink); }
.logo strong {
  display: block;
  font-family: var(--ff-serif);
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-ink);
  margin-bottom: 4px;
}

/* 버튼 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  transition: all 0.18s;
  cursor: pointer;
}
.btn--primary { background: var(--c-ink); color: var(--c-bg); }
.btn--primary:hover { background: var(--c-copper); color: #fff; }
.btn--ghost {
  background: transparent;
  color: var(--c-ink);
  border-color: var(--c-line2);
}
.btn--ghost:hover { border-color: var(--c-ink); }
.btn--copper { background: var(--c-copper); color: #fff; }
.btn--copper:hover { background: var(--c-ink); }

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

/* CTA 블록 (페이지 하단) */
.cta {
  background: var(--c-ink);
  color: var(--c-bg);
  padding: 80px 28px;
  text-align: center;
}
.cta__title {
  font-family: var(--ff-serif);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}
.cta__sub {
  color: var(--c-mute2);
  margin-bottom: 28px;
  font-size: 1rem;
}
.cta .btn--primary { background: var(--c-copper); color: #fff; }
.cta .btn--primary:hover { background: #fff; color: var(--c-ink); }
.cta .btn--ghost { color: var(--c-bg); border-color: var(--c-mute); }
.cta .btn--ghost:hover { color: #fff; border-color: #fff; }

/* 인용·강조 박스 */
.callout {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-copper);
  padding: 22px 26px;
  border-radius: 10px;
  margin: 28px 0;
}
.callout__title {
  font-weight: 700;
  margin-bottom: 8px;
  font-size: 1rem;
}

/* 본문 글 */
.prose h2 {
  font-family: var(--ff-serif);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 48px 0 18px;
  letter-spacing: -0.01em;
}
.prose h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 30px 0 12px;
}
.prose p { margin-bottom: 16px; }
.prose ul, .prose ol { margin: 16px 0 16px 24px; }
.prose li { margin-bottom: 8px; }
.prose blockquote {
  border-left: 3px solid var(--c-copper);
  padding-left: 18px;
  margin: 24px 0;
  color: var(--c-mute);
  font-style: italic;
}
.prose a { color: var(--c-copper); text-decoration: underline; text-underline-offset: 3px; }
.prose code {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.86em;
}

/* 폼 */
.form {
  display: grid;
  gap: 20px;
  max-width: 640px;
  margin: 32px 0;
}
.form__field {
  display: grid;
  gap: 6px;
}
.form__label {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--c-ink);
}
.form__input, .form__textarea, .form__select {
  font: inherit;
  padding: 12px 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: 8px;
  color: var(--c-ink);
  font-size: 0.95rem;
}
.form__input:focus, .form__textarea:focus, .form__select:focus {
  outline: none;
  border-color: var(--c-copper);
}
.form__textarea { resize: vertical; min-height: 140px; }
.form__hint {
  font-size: 0.78rem;
  color: var(--c-mute);
}

/* 리스트 (블로그 카드용) */
.entry {
  display: grid;
  gap: 4px;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
}
.entry:hover .entry__title { color: var(--c-copper); }
.entry__date {
  font-size: 0.78rem;
  color: var(--c-mute);
  letter-spacing: 0.05em;
}
.entry__title {
  font-family: var(--ff-serif);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: color 0.2s;
}
.entry__excerpt {
  color: var(--c-mute);
  font-size: 0.92rem;
  margin-top: 6px;
}

/* 푸터 */
.foot {
  background: var(--c-bg);
  border-top: 1px solid var(--c-line);
  padding: 50px 28px 40px;
  font-size: 0.86rem;
  color: var(--c-mute);
}
.foot__inner {
  max-width: var(--w-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 720px) {
  .foot__inner { grid-template-columns: 2fr 1fr 1fr; }
}
.foot__brand {
  font-family: var(--ff-serif);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--c-ink);
  margin-bottom: 8px;
}
.foot__col h4 {
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 12px;
}
.foot__col a {
  display: block;
  padding: 4px 0;
  font-size: 0.86rem;
}
.foot__copy {
  max-width: var(--w-max);
  margin: 30px auto 0;
  padding-top: 22px;
  border-top: 1px solid var(--c-line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--c-mute2);
}