/* =============================================
   D.case Homepage — style.css
   Mobile-first responsive design
   BEM naming convention
   Last optimized: 2026-04-28 (SEO/Performance)
   ============================================= */

/* ===== 폰트 성능 최적화 =====
   Pretendard는 CDN CSS에서 font-display: swap이 지원됩니다.
   MuseoModerno는 Google Fonts URL에 &display=swap 파라미터로 처리됩니다.
   아래는 자체 호스팅 시 사용하는 font-face 예시입니다.
   ================================================
   @font-face {
     font-family: 'Pretendard';
     src: url('/assets/fonts/Pretendard-Regular.woff2') format('woff2');
     font-weight: 400;
     font-style: normal;
     font-display: swap;
   }
   ================================================ */

/* ===== CSS 변수 (테마) ===== */
:root {
  /* ===== D.case Design System v0.5 Brand Tokens ===== */
  /* D.case Master Brand */
  --dc-ink-navy: #1A1F2E;
  --dc-deep-amber: #F5B800;
  --dc-warm-paper: #F7F5F0;
  --dc-stone: #6B6256;

  /* Cheshi Product Brand */
  --ch-butter-cream: #FAEFD3;
  --ch-honey-amber: #F5C842;
  --ch-apricot: #FFE3A8;
  --ch-sunbeam: #FFD479;
  --ch-warm-cocoa: #2D241A;
  --ch-toast: #8B6F4A;
  --ch-cheek-pink: #FFB29C;
  --ch-leaf-green: #8BC54E;
  --ch-sky-wash: #B8DCEA;

  /* Functional (shared) */
  --success: #4A7C59;
  --warning: #B86E2C;
  --error: #A4382E;
  --info: #3F6B8F;

  /* Typography tokens */
  --font-display: 'SUIT Variable', 'Pretendard', sans-serif;
  --font-body: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  /* ===== 기존 색상 변수 (기존 레이아웃 유지) ===== */

  /* 색상 */
  --color-bg: var(--dc-warm-paper);    /* D.case Warm Paper — 페이지 바탕 */
  --color-bg-alt: #f0ede8;             /* Warm Paper보다 살짝 어두운 섹션 교대색 */
  --color-bg-dark: var(--dc-ink-navy);
  --color-surface: #ffffff;            /* 카드·인라인 컨테이너 전용 흰색 */
  --color-surface-tint: var(--dc-warm-paper); /* 제품 섹션 배경 — Warm Paper 통일 */

  --color-primary: #F5B800;       /* D.case Deep Amber — Primary */
  --color-primary-dark: #D4A000;  /* Amber 어둡게 */
  --color-primary-light: #F5C842; /* Honey Amber — 버튼 hover/뱃지 */

  --color-accent: var(--dc-stone);    /* D.case Stone — 보조 강조 (구 세이지 그린 #7fb3a8 대체, design.md v0.5) */
  --color-accent-light: #ede9e4;      /* Stone 연한 tint — 라벨 배경용 */

  --color-text: #2c2825;
  --color-text-secondary: var(--dc-stone);
  --color-text-light: #9e9690;
  --color-text-on-dark: #f5f0ea;

  --color-border: #e8e2da;
  --color-timeline-line: #e0d8ce;
  --color-footer-bg: #111009;   /* 푸터 전용 — Ink Navy보다 어두운 톤 */

  /* 타이포그래피 */
  --font-base: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-md: 1.125rem;   /* 18px */
  --font-size-lg: 1.25rem;    /* 20px */
  --font-size-xl: 1.5rem;     /* 24px */
  --font-size-2xl: 2rem;      /* 32px */
  --font-size-3xl: 2.5rem;    /* 40px */
  --font-size-4xl: 3rem;      /* 48px */
  --font-size-hero: clamp(1.75rem, 5.5vw, 5rem);

  /* 간격 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  --spacing-section: clamp(4rem, 8vw, 7rem);

  /* 레이아웃 */
  --container-max: 1200px;
  --container-padding: 1.25rem;

  /* 그림자 */
  --shadow-sm: 0 1px 3px rgba(44, 40, 37, 0.08);
  --shadow-md: 0 4px 12px rgba(44, 40, 37, 0.1);
  --shadow-lg: 0 8px 32px rgba(44, 40, 37, 0.12);

  /* 반경 */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* 전환 */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* 네비게이션 높이 */
  --nav-height: 64px;
}

/* ===== 리셋 & 기본 ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  /* 한국어 자연 줄바꿈 — 어절 단위로 끊어서 음절 단위 분리 방지 */
  word-break: keep-all;
  overflow-wrap: break-word;
}

img, video {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ===== 컨테이너 ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* ===== 공통 섹션 ===== */
.section {
  padding-block: var(--spacing-section);
}

.section__header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--spacing-2xl);
}

.section__eyebrow {
  display: inline-block;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.section__title {
  font-family: var(--font-display); /* SUIT Variable — D.case 섹션 헤드라인 */
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.section__desc {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ===== 버튼 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--dc-ink-navy); /* Deep Amber 위 — Ink Navy가 가독성 확보 */
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--color-primary-dark);
  color: var(--dc-ink-navy);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 184, 0, 0.4);
}

.btn--ghost {
  background-color: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: white;
  transform: translateY(-2px);
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

/* ===== 네비게이션 ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  background-color: transparent;
  transition: background-color var(--transition-slow),
              box-shadow var(--transition-slow);
}

.nav--scrolled {
  background-color: rgba(250, 249, 247, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.font-logo {
  font-family: 'MuseoModerno', sans-serif;
}

.nav__logo-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  font-family: 'MuseoModerno', sans-serif;
  color: white;
  transition: color var(--transition-base);
}

.nav--scrolled .nav__logo-text {
  color: var(--color-text);
}

/* 햄버거 버튼 (모바일) */
.nav__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.nav__toggle:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

.nav--scrolled .nav__toggle:hover {
  background-color: var(--color-bg-alt);
}

.nav__toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: white;
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.nav--scrolled .nav__toggle-bar {
  background-color: var(--color-text);
}

/* 햄버거 → X 애니메이션 */
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 모바일 메뉴 */
.nav__menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
  flex-direction: column;
  gap: var(--spacing-xs);
}

.nav__menu.is-open {
  display: flex;
}

.nav__link {
  display: block;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.nav__link:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
}

.nav__link--cta {
  background-color: var(--color-primary);
  color: var(--dc-ink-navy); /* Amber 배경 위 — Ink Navy */
  text-align: center;
  margin-top: var(--spacing-xs);
}

.nav__link--cta:hover {
  background-color: var(--color-primary-dark);
  color: var(--dc-ink-navy);
}

.nav__link--app {
  background-color: var(--color-primary);
  color: var(--dc-ink-navy); /* Amber 배경 위 — Ink Navy */
  text-align: center;
  border-radius: var(--radius-full);
  margin-top: var(--spacing-xs);
  font-family: inherit;
  cursor: pointer;
  width: 100%;
}

.nav__link--app:hover {
  background-color: var(--color-primary-dark);
  color: var(--dc-ink-navy);
}

/* 데스크탑 네비게이션 */
@media (min-width: 768px) {
  .nav__toggle {
    display: none;
  }

  .nav__menu {
    display: flex !important;
    position: static;
    background: none;
    padding: 0;
    box-shadow: none;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-xs);
  }

  .nav__link {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    padding-top: 0;
    padding-bottom: 0;
  }

  .nav__link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
  }

  .nav--scrolled .nav__link {
    color: var(--color-text-secondary);
  }

  .nav--scrolled .nav__link--cta {
    color: var(--dc-ink-navy); /* Amber CTA — Ink Navy 텍스트 */
  }

  .nav--scrolled .nav__link:hover {
    background-color: var(--color-bg-alt);
    color: var(--color-primary);
  }

  .nav__link--app {
    padding: 0.5rem 1.25rem;
    border: none;
    font-size: var(--font-size-sm);
    font-weight: 600;
    width: auto;
    margin-top: 0;
  }

  .nav--scrolled .nav__link--app {
    color: var(--dc-ink-navy);
  }
}

/* ===== 히어로 섹션 ===== */
.hero {
  position: relative;
  min-height: 100svh;  /* svh: 모바일 주소창 제외 */
  min-height: 100vh;   /* 폴백 */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__slides {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: var(--dc-ink-navy); /* 히어로 슬라이드 로딩 전 폴백 */
}

.hero__slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.hero__slide--active {
  opacity: 1;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(26, 24, 20, 0.65) 0%,
    rgba(44, 30, 20, 0.55) 50%,
    rgba(26, 24, 20, 0.7) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--spacing-xl) var(--container-padding);
  max-width: 800px;
  padding-top: calc(var(--nav-height) + var(--spacing-xl));
}

.hero__eyebrow {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-md);
  padding: 0.375rem 1rem;
  border: 1px solid rgba(244, 196, 168, 0.4);
  border-radius: var(--radius-full);
}

.hero__title {
  font-family: var(--font-display); /* SUIT Variable — 히어로 Display 헤드라인 */
  font-size: var(--font-size-hero);
  font-weight: 700;
  line-height: 1.1;
  color: white;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  /* 데스크탑에서는 nowrap으로 한 줄 유지, 모바일에서는 아래 미디어 쿼리에서 해제 */
  white-space: nowrap;
}

.hero__desc {
  font-size: clamp(var(--font-size-base), 2vw, var(--font-size-md));
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

.hero__secondary {
  margin-top: var(--spacing-md);
  text-align: center;
}

.hero__secondary-link {
  display: inline-block;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  padding-bottom: 2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.hero__secondary-link:hover,
.hero__secondary-link:focus {
  color: white;
  border-bottom-color: rgba(255, 255, 255, 0.7);
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-xl);
  animation: bounce 2s infinite;
  transition: color var(--transition-fast);
}

.hero__scroll:hover {
  color: white;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

@media (max-width: 768px) {
  .hero__content {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    padding-top: calc(var(--nav-height) + 1.5rem);
    padding-bottom: 5rem;
  }

  .hero__title {
    font-size: clamp(1.75rem, 7.5vw, 2.8rem);
    line-height: 1.25;
    margin-bottom: 1rem;
    /* 모바일에서 nowrap 해제 — <br>과 clamp font-size로 자연스럽게 줄바꿈 */
    white-space: normal;
  }

  .hero__desc {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.75rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .hero__eyebrow {
    font-size: 0.65rem;
    padding: 0.3rem 0.75rem;
    margin-bottom: 1rem;
  }

}

/* ===== 문제 섹션 ===== */
.problem {
  background-color: var(--color-bg);
}

.problem__grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: 1fr;
}

.problem__card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.problem__card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.problem__icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.problem__card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.problem__card-desc {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

@media (min-width: 640px) {
  .problem__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .problem__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== 솔루션 섹션 ===== */
.solution {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}

.solution .section__title {
  color: var(--color-text-on-dark);
}

.solution .section__eyebrow {
  color: var(--color-primary-light);
}

.solution__steps {
  max-width: 720px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: step;
}

.solution__step {
  display: flex;
  gap: var(--spacing-lg);
  padding-block: var(--spacing-lg);
  position: relative;
}

/* 연결선 */
.solution__step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: calc(2rem - 1px);  /* 번호 원의 중앙 */
  top: calc(var(--spacing-lg) + 4rem);
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--color-primary) 0%,
    rgba(245, 184, 0, 0.2) 100% /* Deep Amber fade */
  );
}

.solution__step-num {
  flex-shrink: 0;
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--dc-ink-navy); /* Amber 배경 위 — Ink Navy */
  font-size: var(--font-size-sm);
  font-weight: 700;
  border-radius: var(--radius-full);
  position: relative;
  z-index: 1;
}

.solution__step-body {
  padding-top: 0.75rem;
  flex: 1;
}

.solution__step-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-xs);
}

.solution__step-desc {
  color: rgba(245, 240, 234, 0.7);
  line-height: 1.7;
}

/* ===== 제품 섹션 ===== */
.product {
  background-color: var(--color-surface-tint);
}

.product__grid {
  display: grid;
  gap: var(--spacing-2xl);
  align-items: center;
  grid-template-columns: 1fr;
}

.product__visual {
  display: flex;
  justify-content: center;
}

.product__img-placeholder {
  width: 260px;
  height: 320px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-light));
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: 4rem;
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-lg);
}

.product__img-placeholder p {
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.product__name {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.product__tagline {
  font-size: var(--font-size-md);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
}

.product__features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.product__feature {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--color-text-secondary);
}

.product__feature-icon {
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  margin-top: 0.3rem;
  flex-shrink: 0;
}

.product__badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

@media (min-width: 768px) {
  .product__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== 트랙션 섹션 ===== */
/* [섹션 배경 순환] A 색 (흰색) — 2색 교대 패턴 */
.traction {
  background-color: var(--color-surface);
}

.timeline {
  max-width: 680px;
  margin-inline: auto;
  position: relative;
}

/* 세로 선 */
.timeline::before {
  content: '';
  position: absolute;
  left: 1.5rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--color-primary) 0%,
    var(--color-timeline-line) 60%,
    transparent 100%
  );
}

.timeline__item {
  display: flex;
  gap: var(--spacing-lg);
  padding-block: var(--spacing-lg);
  padding-left: var(--spacing-sm);
  position: relative;
}

/* 점 */
.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(1.5rem - 7px);
  top: calc(var(--spacing-lg) + 0.5rem);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--color-timeline-line);
  border: 2px solid var(--color-bg);
  z-index: 1;
}

.timeline__item--current::before {
  background-color: var(--color-primary);
  width: 18px;
  height: 18px;
  left: calc(1.5rem - 9px);
  box-shadow: 0 0 0 4px var(--color-primary-light);
}

.timeline__item--future::before {
  background-color: var(--color-bg);
  border-color: var(--color-timeline-line);
}

.timeline__date {
  flex-shrink: 0;
  padding-left: 2.5rem;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
  padding-top: 0.25rem;
  width: 7.5rem;
  white-space: nowrap;
}

@media (max-width: 480px) {
  .timeline__date {
    width: 5.5rem;
    font-size: var(--font-size-xs);
    padding-left: 2rem;
  }
}

.timeline__title {
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.timeline__item--future .timeline__title {
  color: var(--color-text-light);
}

.timeline__desc {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.timeline__badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 99px;
  margin-bottom: 0.4rem;
  color: #fff;
}
.timeline__badge--partnership { background: var(--warning); }   /* Warning #B86E2C → 파트너십 */
.timeline__badge--license     { background: var(--success); }   /* Success #4A7C59 → 라이선스 */
.timeline__badge--product     { background: var(--error); }     /* Error #A4382E → 제품 */
.timeline__badge--future      { background: var(--dc-stone); }  /* Stone #6B6256 → 미래(톤다운) */

/* ===== 크리에이터 섹션 ===== */
/* [섹션 배경 순환] A 색 (흰색) — 2색 교대 패턴 */
.creator {
  background-color: var(--color-surface);
}

.creator__grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: 1fr;
  margin-bottom: var(--spacing-2xl);
}

.creator__card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  text-align: center;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.creator__card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.creator__card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.creator__card-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.creator__card-desc {
  color: var(--color-text-secondary);
  line-height: 1.7;
  font-size: var(--font-size-sm);
}

.creator__cta {
  text-align: center;
}

@media (min-width: 640px) {
  .creator__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== 함께하는 크리에이터 (인터랙티브 캐러셀) ===== */
.creator-carousel-wrap {
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
  /* 캐러셀 토큰 — 한 곳에서 카드 크기·간격·자동 스크롤 속도(px/s)를 조정 */
  --cc-card-w: 200px;
  --cc-gap: 20px;
  --cc-auto-speed: 40; /* px/s — main.js의 RAF 루프가 읽음 */
}

.section__header--compact {
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.creator-carousel__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-top: var(--spacing-xs);
}

/* 마스크: 좌우 가장자리 페이드 — 무한 루프가 더 자연스러워 보이게 */
.creator-carousel {
  position: relative;
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  cursor: grab;
  /* 모바일 트랙패드/터치 — 가로 스와이프 자연스럽게 */
  -webkit-overflow-scrolling: touch;
  /* 사용자 조작 중 스냅이 끼어들지 않도록 비활성. 부드러운 자동 스크롤을 위해 instant 위주 */
  scroll-behavior: auto;
  /* 가로 스크롤 제스처가 페이지 가로 네비게이션(뒤로가기)에 잡히지 않게 */
  overscroll-behavior-x: contain;
  /* 키보드 포커스 표시는 카드에서. 컨테이너 자체는 자연스럽게 */
  outline: none;
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0,
    #000 48px,
    #000 calc(100% - 48px),
    transparent 100%
  );
          mask-image: linear-gradient(
    to right,
    transparent 0,
    #000 48px,
    #000 calc(100% - 48px),
    transparent 100%
  );
}

.creator-carousel.is-grabbing {
  cursor: grabbing;
}

/* 스크롤바 — 얇게, hover 시에만 노출 (디자인 톤 유지) */
.creator-carousel {
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
  transition: scrollbar-color 200ms ease;
}
.creator-carousel:hover,
.creator-carousel:focus-within {
  scrollbar-color: var(--color-border) transparent;
}
.creator-carousel::-webkit-scrollbar {
  height: 6px;
}
.creator-carousel::-webkit-scrollbar-track {
  background: transparent;
}
.creator-carousel::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: 3px;
  transition: background-color 200ms ease;
}
.creator-carousel:hover::-webkit-scrollbar-thumb,
.creator-carousel:focus-within::-webkit-scrollbar-thumb {
  background: var(--color-border);
}

.creator-carousel__track {
  display: flex;
  gap: var(--cc-gap);
  width: max-content;
  will-change: scroll-position;
}

.creator-carousel__card {
  flex: 0 0 var(--cc-card-w);
  width: var(--cc-card-w);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  /* 드래그 중 카드 내부 텍스트·이미지 선택 방지 */
  user-select: none;
  -webkit-user-drag: none;
}

.creator-carousel__card img {
  pointer-events: none; /* 드래그 시 ghost-image 방지 */
  -webkit-user-drag: none;
}

.creator-carousel__card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px) scale(1.02);
}

.creator-carousel__card:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
}

/* 드래그 중에는 클릭으로 인스타 페이지가 열리지 않게 — JS가 토글 */
.creator-carousel.is-dragging .creator-carousel__card {
  pointer-events: none;
}

.creator-carousel__thumb {
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: var(--color-bg-alt, #f5efe7);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
}

.creator-carousel__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.creator-carousel__name {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.creator-carousel__handle {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.creator-carousel__note {
  margin-top: var(--spacing-md);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-style: italic;
}

/* 모바일: 카드 축소 + 자동 스크롤 약간 느리게 (작은 화면에서 너무 빨라보이지 않게) */
@media (max-width: 640px) {
  .creator-carousel-wrap {
    --cc-card-w: 150px;
    --cc-gap: 14px;
    --cc-auto-speed: 30;
  }
  .creator-carousel__card {
    padding: var(--spacing-xs);
  }
}

/* 접근성: 모션 감소 선호 시 자동 스크롤 정지 (사용자가 직접 스크롤로 탐색).
   JS가 prefers-reduced-motion을 감지해 RAF 루프를 시작하지 않으므로 추가 CSS 불필요. */
@media (prefers-reduced-motion: reduce) {
  .creator-carousel__card {
    scroll-snap-align: start;
  }
  .creator-carousel {
    scroll-snap-type: x proximity;
  }
}

/* ===== 파트너 섹션 ===== */
/* [섹션 배경 순환] B 색 (옅은 베이지) — 2색 교대 패턴 */
.partners {
  padding-block: var(--spacing-2xl);
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.partners__label {
  text-align: center;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

.partners__logos {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  justify-content: center;
  align-items: center;
}

.partners__marquee {
  display: none;
}

@media (max-width: 768px) {
  .partners__logos {
    display: none;
  }

  .partners__marquee {
    display: block;
    overflow: hidden;
    -webkit-overflow-scrolling: touch;
  }

  .partners__marquee-track {
    display: flex;
    align-items: center;
    gap: 2rem;
    width: max-content;
    will-change: transform;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    animation: marquee 14s linear infinite;
    -webkit-animation: marquee 14s linear infinite;
  }

  .partners__marquee-track img {
    height: 48px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
  }
}

@-webkit-keyframes marquee {
  0%   { -webkit-transform: translateX(0); }
  100% { -webkit-transform: translateX(-50%); }
}

@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.partners__logo-placeholder {
  padding: 1rem 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-light);
  white-space: nowrap;
}

.partners__logo-img {
  height: 60px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  transition: opacity 0.2s;
}

.partners__logo-img:hover {
  opacity: 0.8;
}

/* ===== 창업자 섹션 ===== */
/* [섹션 배경 순환] A 색 (흰색) — 2색 교대 패턴 */
.founder {
  background-color: var(--color-surface);
}

.founder__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-xl);
  align-items: stretch;
}

.founder__card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 20px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid var(--color-border);
}

.founder__avatar {
  margin-inline: auto;
  margin-bottom: var(--spacing-md);
  width: 160px;
  height: 160px;
  border-radius: 50%;
  overflow: hidden;
  background-color: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}

.founder__avatar-placeholder {
  font-size: 2rem;
}

.founder__avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.founder__name {
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.founder__role {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.founder__bio {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.founder__video {
  position: relative;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.founder__video iframe {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 280px;
  border-radius: var(--radius-md);
}

@media (max-width: 768px) {
  .founder__inner {
    grid-template-columns: 1fr;
  }
}

/* ===== CTA 섹션 ===== */
.cta-section {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}

.cta-section .section__title {
  color: var(--color-text-on-dark);
}

.cta-section .section__desc {
  color: rgba(245, 240, 234, 0.7);
}

/* CTA 탭 */
.cta-tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--spacing-xs);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.cta-tab {
  padding: 0.875rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  flex: 1;
  text-align: center;
  color: rgba(245, 240, 234, 0.6);
  border: 1px solid rgba(245, 240, 234, 0.2);
  transition: all var(--transition-base);
}

.cta-tab:hover {
  color: white;
  border-color: rgba(245, 240, 234, 0.5);
  background-color: rgba(255, 255, 255, 0.07);
}

.cta-tab--active {
  background-color: var(--color-primary);
  color: var(--dc-ink-navy); /* Amber 배경 위 — Ink Navy */
  border-color: var(--color-primary);
}

.cta-tab--active:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--dc-ink-navy);
}

.cta-tab:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

/* 모바일 전용 줄바꿈 — PC에서 숨김 */
.br--mobile {
  display: none;
}

@media (max-width: 767px) {
  .br--mobile {
    display: inline;
  }
}

.br-mobile {
  display: none; /* 기본(데스크탑): 숨김 */
}

@media (max-width: 767px) {
  .br-mobile {
    display: inline; /* 모바일: 줄바꿈 활성화 */
  }
}

/* CTA 패널 */
.cta-panel {
  max-width: 800px;
  margin-inline: auto;
}

.cta-panel[hidden] {
  display: none;
}

.cta-panel__inner {
  text-align: center;
}

.cta-panel__title {
  font-family: var(--font-display); /* SUIT Variable — CTA 헤드라인 */
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-sm);
}

.cta-panel__desc {
  color: rgba(245, 240, 234, 0.7);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

/* 사전예약 폼 */
.reservation-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 560px;
  align-items: center;
  margin-inline: auto;
  text-align: center;
}

.reservation-form__row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  justify-content: center;
}

.reservation-form__row .reservation-form__input {
  flex: 4;
}

.reservation-form__field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
  min-width: min(400px, 60vw);
}

.reservation-form__label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-on-dark);
  align-self: flex-start;
  text-align: left;
}

.reservation-form__input {
  padding: 0.7rem 1rem;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-family: inherit;
  background: rgba(255,255,255,0.08);
  color: var(--color-text-on-dark);
  transition: border-color var(--transition-base);
}

.reservation-form__input::placeholder {
  color: rgba(255,255,255,0.4);
}

.reservation-form__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.reservation-form__checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-on-dark);
  cursor: pointer;
}

.reservation-form__checkbox input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.reservation-form__status {
  font-size: var(--font-size-sm);
  font-weight: 500;
  min-height: 1.2em;
}

/* 파트너십 폼 */
.partner-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 640px;
  margin-inline: auto;
}

.partner-form__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.partner-form__field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.partner-form__field--full {
  grid-column: 1 / -1;
}

.partner-form__label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-on-dark);
  text-align: left;
  align-self: flex-start;
}

.partner-form__input {
  padding: 0.7rem 1rem;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-family: inherit;
  background: rgba(255,255,255,0.08);
  color: var(--color-text-on-dark);
  transition: border-color var(--transition-base);
}

.partner-form__input::placeholder {
  color: rgba(255,255,255,0.4);
}

.partner-form__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.partner-form__textarea {
  min-height: 80px;
  resize: vertical;
}

.partner-form__status {
  font-size: var(--font-size-sm);
  font-weight: 500;
  min-height: 1.2em;
}

.partner-form__note {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);  /* warm-neutral #9e9690 (design.md §7 웜톤 뉴트럴) */
  margin-bottom: 1rem;
}

.partner-form__note a {
  color: inherit;
  text-decoration: underline;
}

@media (max-width: 600px) {
  .partner-form__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .reservation-form__field {
    min-width: 0;
    width: 100%;
  }
  .reservation-form__row {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }
}

/* ===== 푸터 ===== */
.footer {
  background-color: var(--color-footer-bg);
  color: rgba(245, 240, 234, 0.6);
  padding-block: var(--spacing-2xl);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__logo {
  font-size: var(--font-size-lg);
  font-weight: 700;
  font-family: 'MuseoModerno', sans-serif;
  color: white;
  margin-bottom: 0.25rem;
}

.footer__tagline {
  font-size: var(--font-size-sm);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs) var(--spacing-md);
}

.footer__link {
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: white;
}

.footer__contact {
  font-size: var(--font-size-sm);
}

.footer__email {
  color: var(--color-primary-light);
  transition: color var(--transition-fast);
}

.footer__email:hover {
  color: var(--color-primary);
}

.footer__copy {
  font-size: var(--font-size-xs);
  text-align: center;
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  14%       { transform: scale(1.06); }
  28%       { transform: scale(1); }
  42%       { transform: scale(1.04); }
  56%       { transform: scale(1); }
}

.app-download-section {
  display: flex;
  justify-content: center;
  padding: var(--spacing-xl) 0;
}

.app-download-section .app-download-btn {
  animation: heartbeat 2.4s ease-in-out infinite;
}

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--dc-ink-navy); /* Amber 배경 위 — Ink Navy */
  font-size: 1.2rem;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  line-height: 1;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  z-index: 900;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

@media (min-width: 768px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ===== 서비스 상태 배지 (카드 내 인라인) ===== */
.service-status {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 99px;
  margin-bottom: 0.5rem;
  letter-spacing: 0.04em;
}
.service-status--live {
  background: #EEF3EC;            /* D.case Success bg tint (design.md §5) */
  color: var(--success);          /* Success #4A7C59 */
}
.service-status--soon {
  background: var(--dc-warm-paper);  /* Warm Paper — 톤다운 neutral */
  color: var(--dc-stone);            /* Stone #6B6256 */
}

/* ===== 서비스 뱃지 ===== */
.service-badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
}

.service-badge--main {
  background-color: var(--color-primary);
  color: var(--dc-ink-navy); /* Amber 배경 위 — Ink Navy */
}

/* ===== 체시 소개 섹션 ===== */
/* [섹션 배경 순환] A 색 (흰색) — 2색 교대 패턴 */
.cheshi-intro {
  background-color: var(--color-surface);
}

.cheshi-intro__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: stretch;
}
.cheshi-intro__quote {
  font-size: clamp(0.75rem, 2.5vw, 1.1rem);
  font-style: italic;
  color: var(--color-text-light);  /* warm-neutral #9e9690 (design.md §7 웜톤 뉴트럴) */
  border-left: 3px solid var(--dc-deep-amber);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  line-height: 1.7;
  /* nowrap 제거 — 데스크탑 폭에서는 한 줄이지만 모바일 줄바꿈 허용 */
  white-space: normal;
}
.cheshi-intro__quote span {
  display: block;
  font-size: 0.85rem;
  margin-top: 0.4rem;
}
.cheshi-intro__desc {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text, #333);
  margin-bottom: 1rem;
}
.cheshi-intro__desc:last-of-type {
  margin-bottom: 0;
}
.cheshi-intro__desc--closing {
  margin-top: 0.5rem;
}
.cheshi-intro__visual {
  height: 100%;
}
.cheshi-intro__img {
  width: 100%;
  height: 100%;
  border-radius: 1.5rem;
  object-fit: cover;
  display: block;
}
@media (max-width: 768px) {
  .cheshi-intro__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .cheshi-intro__visual {
    order: -1;
  }
}

/* ===== NFC 진입점 섹션 ===== */
.nfc-intro {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding-block: 3rem;
  min-height: 100svh;
  display: flex;
  align-items: center;
}

.nfc-intro__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.nfc-intro__visual {
  display: flex;
  flex-direction: column;   /* 슬라이드 + 도트를 세로로 배치 */
  align-items: center;
  justify-content: center;
}

.nfc-intro__slides {
  display: grid;
  width: 100%;
  max-width: 360px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.nfc-intro__slide {
  grid-area: 1 / 1;
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  opacity: 0;
  transition: opacity 0.5s ease;
}

.nfc-intro__slide--active {
  opacity: 1;
}

@media (max-width: 768px) {
  .nfc-intro__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.nfc-intro .container {
  width: 100%;
}

.nfc-intro .section__header {
  margin-bottom: 2rem;
}

.nfc-intro .section__title {
  color: var(--color-text-on-dark);
}

.nfc-intro .section__eyebrow {
  color: var(--color-primary-light);
}

.nfc-intro .section__desc {
  color: rgba(245, 240, 234, 0.7);
}

.nfc-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.nfc-step {
  display: flex;
  gap: var(--spacing-lg);
  padding-block: 1.25rem;
  position: relative;
}

.nfc-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: calc(2rem - 1px);
  top: calc(1.25rem + 4rem);
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--color-primary) 0%,
    rgba(245, 184, 0, 0.2) 100% /* Deep Amber fade */
  );
}

.nfc-step__num {
  flex-shrink: 0;
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--dc-ink-navy); /* Amber 배경 위 — Ink Navy */
  font-size: var(--font-size-sm);
  font-weight: 700;
  border-radius: var(--radius-full);
  position: relative;
  z-index: 1;
}

.nfc-step__body {
  padding-top: 0.75rem;
  flex: 1;
}

.nfc-step__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-xs);
}

.nfc-step__desc {
  color: rgba(245, 240, 234, 0.7);
  line-height: 1.7;
}

/* ===== 파크 섹션 ===== */
/* [섹션 배경 순환] A 색 (흰색) — 2색 교대 패턴 */
.park {
  background-color: var(--color-surface);
}

.park__grid {
  display: grid;
  gap: var(--spacing-2xl);
  align-items: center;
  grid-template-columns: 1fr;
}

.park__visual {
  display: flex;
  justify-content: center;
}

.park__img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  display: block;
  box-shadow: var(--shadow-lg);
}

.park__features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.park__feature {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--color-text-secondary);
}

.park__feature-icon {
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  margin-top: 0.3rem;
  flex-shrink: 0;
}

.park__badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  background-color: var(--color-primary-light);
  color: var(--dc-ink-navy); /* Honey Amber 위 — Ink Navy */
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

@media (min-width: 768px) {
  .park__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== 일상 서비스 섹션 ===== */
/* [섹션 배경 순환] B 색 (옅은 베이지) — 2색 교대 패턴 */
.daily {
  background-color: var(--color-bg);
  padding-block: 3rem;
}

.daily .section__header {
  margin-bottom: 1.5rem;
}

.daily__grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: 1fr;
}

.daily__card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.daily__card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.daily__card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.daily__card-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--dc-ink-navy); /* Honey Amber 위 — Ink Navy */
  background-color: var(--color-primary-light);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-sm);
}

.daily__card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.daily__card-desc {
  color: var(--color-text-secondary);
  line-height: 1.7;
  font-size: var(--font-size-sm);
  margin-bottom: 1rem;
}

.daily__slides {
  display: grid;
  width: 100%;
  border-radius: var(--radius-lg, 1rem);
  overflow: hidden;
}

.daily__slide {
  grid-area: 1 / 1;
  width: 100%;
  max-height: 405px;
  object-fit: contain;
  object-position: center top;
  display: block;
  opacity: 0;
  transition: opacity 0.5s ease;
  border-radius: var(--radius-lg, 1rem);
}

.daily__slide--active {
  opacity: 1;
}

@media (min-width: 640px) {
  .daily__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== 커머스 섹션 ===== */
/* [섹션 배경 순환] B 색 (옅은 베이지) — 2색 교대 패턴 */
.commerce {
  background-color: var(--color-bg);
}

.commerce__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 768px) {
  .commerce__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.commerce__text {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.commerce__text .section__eyebrow,
.commerce__text .section__title,
.commerce__text .section__desc {
  text-align: left;
  margin: 0;
}

.commerce__slides {
  display: grid;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.commerce__slide {
  grid-area: 1 / 1;
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  opacity: 0;
  transition: opacity 0.5s ease;
}

.commerce__slide--active {
  opacity: 1;
}


.commerce__grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: 1fr;
}

.commerce__card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.commerce__card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.commerce__card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.commerce__card-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-sm);
}

.commerce__card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.commerce__card-desc {
  color: var(--color-text-secondary);
  line-height: 1.7;
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
}

.commerce__card-link {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.commerce__card-link:hover {
  color: var(--color-primary-dark);
}

@media (min-width: 640px) {
  .commerce__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== 관계 성장 여정 섹션 (.journey, id="ecosystem") ===== */
/* [섹션 배경 순환] B 색 (옅은 베이지) — 2색 교대 패턴 */
.journey {
  background-color: var(--color-bg);
}

/* ===== 생태계 섹션 (구버전 셀렉터, 현재 미사용) ===== */
.ecosystem {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}

.ecosystem .section__title {
  color: var(--color-text-on-dark);
}

.ecosystem .section__eyebrow {
  color: var(--color-primary-light);
}

.ecosystem .section__desc {
  color: rgba(245, 240, 234, 0.7);
}

.ecosystem__map {
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xl);
}

.ecosystem__hub {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  background-color: var(--color-primary);
  color: var(--dc-ink-navy); /* Amber 배경 위 — Ink Navy */
  padding: var(--spacing-lg) var(--spacing-2xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(245, 184, 0, 0.4); /* Deep Amber glow */
  font-size: 2rem;
}

.ecosystem__hub strong {
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.ecosystem__hub small {
  font-size: var(--font-size-xs);
  opacity: 0.8;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.ecosystem__services {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

.ecosystem__service {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(245, 240, 234, 0.85);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: background-color var(--transition-fast);
}

.ecosystem__service:hover {
  background-color: rgba(255, 255, 255, 0.14);
}

.ecosystem__story {
  text-align: center;
  max-width: 600px;
  margin-inline: auto;
  color: rgba(245, 240, 234, 0.6);
  font-size: var(--font-size-sm);
  line-height: 1.8;
  padding: var(--spacing-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
}

/* ===== 관계 성장 여정 섹션 ===== */
.journey__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  list-style: none;
  margin: 3rem 0 2rem;
  padding: 0;
  counter-reset: none;
}
.journey__step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
}
.journey__step + .journey__step::before {
  content: '→';
  position: absolute;
  left: -0.75rem;
  top: 1.25rem;
  transform: translateX(-50%) translateY(-50%);
  color: var(--dc-deep-amber);
  font-size: 1.2rem;
  line-height: 1;
}
.journey__step-num {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--dc-deep-amber);
  color: var(--dc-ink-navy);  /* Amber 배경 위 Ink Navy — 대비 준수 */
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  align-self: center;
}
.journey__step-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 99px;
  margin-bottom: 0.25rem;
}
.journey__step-badge--live   { background: #EEF3EC; color: var(--success); }           /* Success tint (design.md §5) */
.journey__step-badge--soon   { background: #E5EDF3; color: var(--info); }              /* Info tint (design.md §5) */
.journey__step-badge--future { background: var(--dc-warm-paper); color: var(--dc-stone); } /* Warm Paper / Stone — 미래 톤다운 */
.journey__step-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
}
.journey__step-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-light);  /* warm-neutral #9e9690 */
  margin: 0;
}
.journey__ending {
  text-align: center;
  font-size: 1.05rem;
  line-height: 1.8;
  margin-top: 2.5rem;
  color: var(--color-text, #333);
}
@media (max-width: 768px) {
  .journey__steps {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .journey__step + .journey__step::before {
    content: '↓';
    left: 50%;
    top: -1.5rem;
    transform: translateX(-50%) translateY(-50%);
    padding: 0.5rem;
  }
}

/* ===== 슬라이더 도트 인디케이터 ===== */

/*
 * JS의 createSliderDots()가 슬라이더 컨테이너를 이 래퍼로 감싼다.
 * 기존 그리드/플렉스 부모 레이아웃 안에서 슬라이더+도트를 세로로 배치한다.
 */
.slider-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;              /* 부모 셀 너비를 그대로 계승 */
}

/*
 * 슬라이더 하단에 동적으로 삽입되는 도트 컨테이너.
 * JS의 createSliderDots()가 슬라이더 컨테이너 바로 다음에 삽입한다.
 */
.slider-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding-top: 0.75rem;   /* 슬라이더와 도트 사이 간격 */
}

/* 개별 도트 버튼 — 클릭 영역(24×24)과 시각적 원(::before)을 분리 */
.slider-dots__dot {
  /* 클릭 영역은 최소 24px × 24px 확보 (모바일 터치) */
  min-width: 24px;
  min-height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;

  /* 버튼 자체는 투명 — 시각적 원은 ::before에서 그린다 */
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  position: relative;
}

/* 실제로 보이는 원 (before 슈도 요소) */
.slider-dots__dot::before {
  content: '';
  display: block;
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background-color: rgba(44, 40, 37, 0.25);
  transition:
    width var(--transition-base),
    background-color var(--transition-base),
    opacity var(--transition-base);
}

/* 활성 도트 — pill 형태 + 브랜드 컬러 */
.slider-dots__dot--active::before {
  width: 20px;                            /* pill 모양으로 늘어남 */
  background-color: var(--color-primary); /* D.case Deep Amber — 활성 도트 */
}

/* 호버 */
.slider-dots__dot:not(.slider-dots__dot--active):hover::before {
  background-color: rgba(44, 40, 37, 0.45);
}

/* 포커스 링 (접근성) */
.slider-dots__dot:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* 다크 배경 위 도트 변형 (.slider-dots--dark 클래스) */
.slider-dots--dark .slider-dots__dot::before {
  background-color: rgba(245, 240, 234, 0.3);
}

.slider-dots--dark .slider-dots__dot--active::before {
  background-color: var(--color-primary-light);
}

.slider-dots--dark .slider-dots__dot:not(.slider-dots__dot--active):hover::before {
  background-color: rgba(245, 240, 234, 0.55);
}

/* prefers-reduced-motion: 전환 애니메이션 제거 */
@media (prefers-reduced-motion: reduce) {
  .slider-dots__dot::before {
    transition: none;
  }
}

/* ===== 스크롤 페이드인 애니메이션 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 크리에이터 파트너십 5단계 프로세스 (.partnership-flow) ===== */
/* [섹션 배경 순환] A 색 (흰색) — creator(흰)의 자연스러운 연장으로 흰색 유지 */
.partnership-flow {
  background-color: var(--color-surface);
  /* creator 섹션과 시각적 호흡 — 위쪽 미세 구분선으로 두 흰색 섹션을 구분 */
  border-top: 1px solid var(--color-border);
}

.partnership-flow__steps {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  counter-reset: pf-step;
}

.partnership-flow__step {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl) var(--spacing-md);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.partnership-flow__step:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

/* 필수 단계: 진한 톤 (primary 강조) */
.partnership-flow__step--required {
  border-color: var(--color-primary-light);
  background-color: var(--color-surface-tint);
}

/* 선택 단계: 옅은 톤 */
.partnership-flow__step--optional {
  border-style: dashed;
  border-color: var(--color-primary);
}

.partnership-flow__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  font-family: 'MuseoModerno', var(--font-base);
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background-color: var(--color-bg-alt);
  color: var(--color-text-secondary);
}

.partnership-flow__step--required .partnership-flow__num {
  background-color: var(--color-primary);
  color: var(--dc-ink-navy); /* Amber 배경 위 — Ink Navy */
}

.partnership-flow__body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.partnership-flow__badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: var(--spacing-xs);
}

.partnership-flow__badge--required {
  background-color: var(--color-primary);
  color: var(--dc-ink-navy); /* Amber 배경 위 — Ink Navy */
}

.partnership-flow__badge--optional {
  background-color: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.partnership-flow__title {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
}

.partnership-flow__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.partnership-flow__highlight {
  color: var(--color-primary-dark);
  font-weight: 700;
}

/* 단계 카드 z-index 기준 — 이후 형제 카드가 이전 카드의 ::after 연결선을 덮지 않도록
   카드 본체는 z-index:1, 연결선은 z-index:2로 명시 (later-sibling paint order 충돌 해소) */
.partnership-flow__step {
  z-index: 1;
}

/* 모바일 (기본): 세로 스택 + 단계 사이 세로 실선 연결
   카드 하단 gap(--spacing-lg) 중앙에 위치 — 카드 내부 침범 없이 gap 영역 내부에서만 그려짐 */
.partnership-flow__step:not(:last-child)::after {
  content: '';
  position: absolute;
  bottom: calc(-1 * var(--spacing-lg));
  left: 50%;
  width: 2px;
  height: var(--spacing-lg);
  transform: translateX(-50%);
  background-color: var(--color-primary-light);
  pointer-events: none;
  z-index: 2;
}

/* 데스크탑: 가로 5열 플로우 + 단계 사이 가로 실선 연결
   카드 우측 gap(--spacing-md) 중앙에 위치 — 카드 내부 침범 없이 gap 영역 내부에서만 그려짐 */
@media (min-width: 960px) {
  .partnership-flow__steps {
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-md);
    align-items: stretch;
  }

  .partnership-flow__step {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  .partnership-flow__step:not(:last-child)::after {
    content: '';
    top: 50%;
    bottom: auto;
    left: auto;
    right: calc(-1 * var(--spacing-md));
    width: var(--spacing-md);
    height: 2px;
    transform: translateY(-50%);
  }
}

/* ===== 접근성: 포커스 링 ===== */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

/* ===== prefers-reduced-motion ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero__scroll {
    animation: none;
  }
}