/* ============================================================
   Quest All — design tokens
   ============================================================ */
:root {
  --bg: #ffffff;
  --bg-soft: #f5f5f5;
  --bg-card: #ffffff;
  --ink: #000000;
  --ink-soft: #1a1a1a;
  --ink-muted: #666666;
  --ink-faint: #999999;
  --line: #e5e5e5;
  --line-soft: #f0f0f0;
  --accent: #000000;
  --accent-hover: #1a1a1a;
  --danger: #d4183d;
  --success: #16a34a;
  --warn: #f59e0b;

  --radius-sm: 0;       /* 직각 미학 */
  --radius-md: 0;
  --radius-lg: 0;

  --max-w: 1400px;
  --gutter: 24px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);

  --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo',
               'Segoe UI', Roboto, 'Noto Sans KR', sans-serif;
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }
img { max-width: 100%; display: block; }

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

.section {
  padding: 80px 0;
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  :root { --gutter: 20px; }
}

/* ============================================================
   Header / Nav (좌 로고, 중앙 메뉴, 우 액션)
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
}
.brand .dot { width: 8px; height: 8px; background: var(--ink); display: inline-block; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
  justify-content: center;
}
.nav-menu a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  padding: 8px 0;
  position: relative;
  letter-spacing: 0.02em;
}
.nav-menu a:hover,
.nav-menu a.active { color: var(--ink); }
.nav-menu a:hover::after,
.nav-menu a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--ink);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  position: relative;
  transition: transform .25s ease;
}
.nav-toggle span::before { position: absolute; top: -7px; left: 0; }
.nav-toggle span::after  { position: absolute; top:  7px; left: 0; }

.nav-mobile {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--bg);
}
.nav-mobile.open { display: block; }
.nav-mobile a {
  display: block;
  padding: 18px var(--gutter);
  font-size: 16px;
  font-weight: 500;
  border-bottom: 1px solid var(--line-soft);
}
.nav-mobile a:last-child { border-bottom: none; }

@media (max-width: 900px) {
  .nav-menu { display: none; }
  .nav-actions { display: none; }
  .nav-toggle { display: inline-flex; }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:hover { background: #fff; color: var(--ink); }

.btn-outline {
  background: transparent;
  color: var(--ink);
}
.btn-outline:hover { background: var(--ink); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { background: var(--bg-soft); color: var(--ink); }

.btn-sm { padding: 10px 18px; font-size: 13px; }
.btn-lg { padding: 18px 36px; font-size: 15px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .4; cursor: not-allowed; pointer-events: none; }

/* ============================================================
   Hero (큰 타이포 + 미니멀 텍스트 + 단일 CTA)
   ============================================================ */
.hero {
  padding: 100px 0 80px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.hero-eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(40px, 7vw, 88px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}
.hero p {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--ink-muted);
  max-width: 640px;
  margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

@media (max-width: 768px) {
  .hero { padding: 64px 0 56px; }
}

/* ============================================================
   Section heading
   ============================================================ */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.section-head .eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.section-head .subtitle {
  font-size: 15px;
  color: var(--ink-muted);
  max-width: 480px;
}

/* ============================================================
   Card grid (상품 카드 패턴)
   ============================================================ */
.card-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 1024px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .card-grid { grid-template-columns: 1fr; gap: 20px; } }

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  cursor: pointer;
  text-decoration: none;
  color: var(--ink);
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--ink);
}

.card-thumb {
  aspect-ratio: 4 / 3;
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  position: relative;
  overflow: hidden;
}
.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .35s ease;
}
.card:hover .card-thumb img { transform: scale(1.03); }
.card-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(0,0,0,0.04));
  pointer-events: none;
}

.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.card-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.card-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.card-desc {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.6;
}
.card-footer {
  margin-top: auto;
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--ink);
  font-weight: 600;
}
.card-arrow {
  display: inline-block;
  transition: transform .2s ease;
}
.card:hover .card-arrow { transform: translateX(4px); }

/* ============================================================
   Forms
   ============================================================ */
.form-group { margin-bottom: 20px; }
.label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  color: var(--ink);
}
.input, .select, .textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 15px;
  color: var(--ink);
  transition: border-color .15s ease;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--ink);
}
.textarea { resize: vertical; min-height: 120px; }
.help { font-size: 12px; color: var(--ink-faint); margin-top: 6px; }

.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 160px; }

/* ============================================================
   Chip / tag
   ============================================================ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.chip:hover { border-color: var(--ink); }
.chip.active { background: var(--ink); color: #fff; border-color: var(--ink); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--line);
  background: #fafafa;
  padding: 56px 0 32px;
  margin-top: 80px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 32px;
}
.footer-brand {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}
.footer-tagline { font-size: 14px; color: var(--ink-muted); max-width: 320px; line-height: 1.7; }
.footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 16px;
  color: var(--ink-muted);
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; color: var(--ink); }
.footer-col a:hover { color: var(--ink-muted); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  font-size: 12px;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Page header (서브페이지 상단)
   ============================================================ */
.page-head {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--line);
}
.page-head .crumb {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 16px;
}
.page-head h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.page-head p { color: var(--ink-muted); font-size: 16px; max-width: 640px; }

/* ============================================================
   Utility
   ============================================================ */
.muted { color: var(--ink-muted); }
.center { text-align: center; }
.stack > * + * { margin-top: 16px; }
.divider { border: none; border-top: 1px solid var(--line); margin: 32px 0; }
.empty {
  padding: 48px 24px;
  text-align: center;
  color: var(--ink-muted);
  border: 1px dashed var(--line);
  background: var(--bg-soft);
}
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: #fff;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  z-index: 1000;
  opacity: 0;
  transition: transform .3s ease, opacity .3s ease;
  max-width: calc(100vw - 32px);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: var(--danger); }

/* ============================================================
   Skeleton/loading
   ============================================================ */
.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid var(--line);
  border-top-color: var(--ink);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }