/* ─── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #ffffff;
  --bg-gray: #ffffff;
  --accent: #111111;
  --accent-light: #f3f3f3;
  --text-primary: #111111;
  --text-secondary: #1d1d1d;
  --text-muted: #434343;
  --border: #e1e1e1;
  --card-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --card-shadow-hover: 0 10px 24px rgba(0,0,0,0.14);
  --radius: 12px;
  --radius-sm: 8px;
  --nav-height: 64px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Navigation ─────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  z-index: 100;
  transition: border-color 0.3s, box-shadow 0.3s;
}
#navbar.scrolled {
  border-color: var(--border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  display: none;
  flex-direction: column;
  background: rgba(255,255,255,0.97);
  border-top: 1px solid var(--border);
  padding: 12px 0;
}
.nav-mobile.open { display: flex; }
.mobile-link {
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s, background 0.2s;
}
.mobile-link:hover { color: var(--accent); background: var(--accent-light); }

/* ─── Hero Business Card ──────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 40px) 24px 80px;
  background:
    radial-gradient(circle at 16% 22%, rgba(0,0,0,0.03) 0%, rgba(0,0,0,0) 48%),
    radial-gradient(circle at 84% 72%, rgba(0,0,0,0.02) 0%, rgba(0,0,0,0) 46%),
    #ffffff;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  position: relative;
  z-index: 1;
}

/* ─── Card Scene ─────────────────────────────────────────────── */
.card-scene {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.card-stack-wrap {
  position: relative;
  width: min(440px, calc(100vw - 48px));
  aspect-ratio: 440 / 264;
}

/* Base card */
.biz-card {
  position: absolute;
  inset: 0;
  border-radius: 7px;
}

/* Back decorative cards */
.biz-card--back-3 {
  background: rgba(201,177,141,0.72);
  box-shadow: 0 4px 16px rgba(70,51,26,0.16);
  transform: rotate(4.5deg) translate(5px, 4px);
  z-index: 1;
}
.biz-card--back-2 {
  background: rgba(224,205,176,0.84);
  box-shadow: 0 3px 12px rgba(70,51,26,0.13);
  transform: rotate(2.2deg) translate(2px, 2px);
  z-index: 2;
}
.biz-card--back-1 {
  background: rgba(238,224,203,0.9);
  box-shadow: 0 2px 8px rgba(70,51,26,0.11);
  transform: rotate(0.8deg) translate(1px, 1px);
  z-index: 3;
}

/* Front interactive card */
.biz-card--front {
  background-color: rgba(250,244,233,0.96);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='p'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.62' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23p)' opacity='0.13'/%3E%3C/svg%3E");
  border: 1px solid rgba(128,102,70,0.22);
  box-shadow:
    0 1px 3px rgba(67,47,26,0.08),
    0 6px 20px rgba(67,47,26,0.14),
    0 20px 48px rgba(67,47,26,0.09);
  cursor: grab;
  user-select: none;
  touch-action: none;
  will-change: transform;
  z-index: 10;
}
.biz-card--front.is-dragging { cursor: grabbing; }

/* Card inner layout */
.biz-card__inner {
  position: absolute;
  inset: 0;
  padding: clamp(10px, 2.6%, 16px) clamp(18px, 5%, 32px) clamp(10px, 2.6%, 16px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.biz-card__accent {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: #4e3b27;
  border-radius: 7px 7px 0 0;
}

.biz-card__main {
  display: flex;
  align-items: flex-start;
  margin-top: 6px;
  flex: 1;
}

.biz-card__left {
  display: flex;
  flex-direction: column;
}

.biz-card__name-en {
  font-size: clamp(0.5rem, 1.15vw, 0.6rem);
  font-weight: 400;
  letter-spacing: 0.2em;
  color: #998162;
  text-transform: uppercase;
}
.biz-card__name-ko {
  font-size: clamp(1.25rem, 3.8vw, 1.8rem);
  font-weight: 700;
  letter-spacing: 0.13em;
  color: #2f2418;
  line-height: 1;
  margin-top: 4px;
}
.biz-card__title {
  font-size: clamp(0.58rem, 1.45vw, 0.7rem);
  font-weight: 400;
  color: #786148;
  letter-spacing: 0.04em;
  margin-top: 8px;
}

.biz-card__monogram {
  width: clamp(34px, 7.5%, 44px);
  aspect-ratio: 1;
  border: 1.5px solid #1a1a1a;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(0.6rem, 1.5vw, 0.8rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #1a1a1a;
  font-family: 'Georgia', 'Times New Roman', serif;
  flex-shrink: 0;
}

.biz-card__sep {
  height: 1px;
  background: linear-gradient(to right, rgba(78,59,39,0.26) 65%, transparent);
  margin: 10px 0 8px;
  flex-shrink: 0;
}

.biz-card__contacts {
  display: flex;
  flex-direction: column;
  gap: clamp(2px, 0.7%, 4px);
  flex-shrink: 0;
}

.biz-card__contact {
  display: flex;
  align-items: center;
  gap: 7px;
}

.biz-card__label {
  font-size: clamp(0.5rem, 1.1vw, 0.6rem);
  font-weight: 600;
  color: #998162;
  width: 14px;
  text-align: right;
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.biz-card__value {
  font-size: clamp(0.52rem, 1.2vw, 0.64rem);
  color: #4a3926;
  letter-spacing: 0.01em;
}

/* Save toast */
.card-save-toast {
  position: fixed;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: rgba(20,20,20,0.9);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: 99px;
  backdrop-filter: blur(10px);
  opacity: 0;
  transition: opacity 0.28s, transform 0.28s;
  pointer-events: none;
  z-index: 9999;
  white-space: nowrap;
}
.card-save-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─── Sections ──────────────────────────────────────────────── */
.section { padding: 88px 0; }
.section-gray { background: var(--bg-gray); }

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 48px;
  position: relative;
  padding-bottom: 16px;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 40px; height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

/* ─── Career ─────────────────────────────────────────────────── */
.career-list { display: flex; flex-direction: column; gap: 24px; }

.career-card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 32px;
  box-shadow: var(--card-shadow);
  transition: box-shadow 0.25s, transform 0.25s;
}
.career-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.career-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.career-company-info { display: flex; align-items: center; gap: 10px; }
.career-company-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}
.career-company {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}
.career-badge {
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 99px;
}
.career-period {
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.career-role {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.career-role::before {
  content: '';
  width: 3px;
  height: 1em;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}

.career-service {
  border: 1px solid var(--border);
  background: var(--bg-gray);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 16px;
}
.career-service-title {
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.career-service-title strong {
  color: var(--text-primary);
}
.career-service-links {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.career-service-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.career-items { display: flex; flex-direction: column; gap: 16px; margin-bottom: 16px; }
.career-item { padding-left: 16px; border-left: 2px solid var(--border); }
.career-item-title {
  display: inline-block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.career-item-period {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: 8px;
}
.career-item ul { margin-top: 8px; display: flex; flex-direction: column; gap: 8px; }
.career-item li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}
.career-item li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

.career-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  background: var(--bg-gray);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 6px;
}

/* ─── Projects ──────────────────────────────────────────────── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: box-shadow 0.25s, transform 0.25s;
  position: relative;
  overflow: hidden;
}
.project-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-3px);
}
.project-card-discontinued {
  opacity: 0.82;
}

.discontinued-banner {
  position: absolute;
  top: 12px; right: -22px;
  background: #4a4a4a;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 28px;
  transform: rotate(35deg);
  letter-spacing: 0.04em;
}

.project-card-top {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.project-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 3px 9px rgba(0,0,0,0.14);
}
.project-icon-placeholder {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, #f2f2f2, #dbdbdb);
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.project-header-info { flex: 1; min-width: 0; }
.project-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.project-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.project-platforms { display: flex; flex-wrap: wrap; gap: 5px; }
.platform {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 99px;
}
.platform.android { background: #f2f2f2; color: #2d2d2d; }
.platform.web { background: #ebebeb; color: #222; }
.platform.ios { background: #f6f6f6; color: #222; }
.project-work-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 99px;
  background: var(--accent-light);
  color: var(--accent);
}
.badge-wait { background: #f0f0f0; color: #3d3d3d; }

.project-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.highlight {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-gray);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 6px;
}
.highlight-blue {
  color: var(--accent);
  background: var(--accent-light);
  border-color: #d0d0d0;
  font-weight: 600;
  font-size: 0.78rem;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}
.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 7px;
  font-size: 0.78rem;
  font-weight: 600;
  transition: opacity 0.2s, transform 0.15s;
}
.store-btn:hover { opacity: 0.85; transform: translateY(-1px); }
.store-apple { background: #111; color: #fff; }
.store-play { background: #2c2c2c; color: #fff; }
.store-web { background: #4a4a4a; color: #fff; }
.store-btn-disabled { opacity: 0.55; cursor: default; pointer-events: none; }
.store-btn-disabled:hover { opacity: 0.55; transform: none; }

/* ─── Skills ─────────────────────────────────────────────────── */
.skills-grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.skill-group { }
.skill-group-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.skill-tag {
  background: #fff;
  border: 1.5px solid var(--border);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 8px;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.skill-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

/* ─── Awards ─────────────────────────────────────────────────── */
.awards-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.award-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  box-shadow: var(--card-shadow);
  transition: box-shadow 0.25s, transform 0.25s;
}
.award-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}
.award-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
  width: 44px;
  text-align: center;
}
.award-info { flex: 1; }
.award-title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.award-title-row h4 {
  flex: 1;
  min-width: 0;
}
.award-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0;
}
.award-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
  margin-bottom: 0;
}
.award-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
}

/* ─── Footer ─────────────────────────────────────────────────── */
footer {
  background: var(--text-primary);
  color: #fff;
  padding: 64px 0 40px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
}
.footer-name {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.footer-sub {
  color: #bcbcbc;
  font-size: 0.9rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin-top: 20px;
}
.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: #c2c2c2;
  font-weight: 500;
  transition: color 0.2s;
}
.footer-link:hover { color: #fff; }
.footer-copy {
  margin-top: 32px;
  font-size: 0.78rem;
  color: #8d8d8d;
}

/* ─── Fade-in Animation ──────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Hero Float Icons ───────────────────────────────────────── */
.hero-float-bg {
  position: absolute;
  inset: 0;
  pointer-events: auto;
  z-index: 0;
  overflow: visible;
}
.hero-float-app {
  position: absolute;
  display: block;
  width: var(--float-size, 44px);
  height: var(--float-size, 44px);
  padding: 0;
  border: 0;
  background: transparent;
  appearance: none;
  -webkit-appearance: none;
  cursor: default;
  opacity: 0;
  pointer-events: auto;
  user-select: none;
  will-change: transform, opacity;
  transform: translate3d(0, 0, 0);
  animation-name: heroFloat;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
  animation-direction: alternate;
  transition: opacity 0.22s;
}
.hero-float-app.is-visible { opacity: var(--float-opacity, 0.78); }
.hero-float-app:hover,
.hero-float-app:focus-visible,
.hero-float-app.is-highlighted {
  opacity: 1;
  z-index: 4;
}
.hero-float-icon {
  width: 100%;
  height: 100%;
  border-radius: 22%;
  object-fit: cover;
  opacity: 0.76;
  pointer-events: none;
  filter: saturate(0.55) grayscale(0.25) contrast(0.98);
  box-shadow: 0 8px 18px rgba(0,0,0,0.12);
  transition: opacity 0.25s, transform 0.25s, box-shadow 0.25s, filter 0.25s;
}
.hero-float-app:hover .hero-float-icon,
.hero-float-app:focus-visible .hero-float-icon,
.hero-float-app.is-highlighted .hero-float-icon {
  opacity: 0.94;
  transform: scale(1.1);
  filter: saturate(0.8) grayscale(0.08) contrast(1.04);
  box-shadow:
    0 0 0 2px rgba(255,255,255,0.86),
    0 0 0 5px rgba(0,0,0,0.24),
    0 14px 28px rgba(0,0,0,0.28);
}
.hero-float-tooltip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 12px);
  transform: translate(-50%, 8px);
  min-width: 130px;
  max-width: 170px;
  background: rgba(255,255,255,0.98);
  border: 1px solid rgba(0,0,0,0.2);
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(0,0,0,0.18);
  padding: 8px 10px;
  text-align: center;
  color: #111;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}
.hero-float-app.is-tooltip-bottom .hero-float-tooltip {
  top: calc(100% + 12px);
  bottom: auto;
  transform: translate(-50%, -8px);
}
.hero-float-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 6px;
  border-style: solid;
  border-color: rgba(255,255,255,0.98) transparent transparent transparent;
}
.hero-float-app.is-tooltip-bottom .hero-float-tooltip::after {
  top: auto;
  bottom: 100%;
  border-color: transparent transparent rgba(255,255,255,0.98) transparent;
}
.hero-float-tooltip strong {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.3;
}
.hero-float-tooltip span {
  display: block;
  margin-top: 2px;
  font-size: 0.67rem;
  line-height: 1.3;
  color: rgba(17,17,17,0.86);
}
.hero-float-app:hover .hero-float-tooltip,
.hero-float-app:focus-visible .hero-float-tooltip,
.hero-float-app.is-highlighted .hero-float-tooltip {
  opacity: 1;
  transform: translate(-50%, 0);
}
.hero-float-app:focus-visible {
  outline: none;
}
@keyframes heroFloat {
  0% {
    transform: translate3d(0, 0, 0) rotate(var(--float-rot-s, -6deg));
  }
  35% {
    transform: translate3d(var(--float-x-mid, 8px), var(--float-travel-mid, -12px), 0)
      rotate(var(--float-rot-m, 2deg));
  }
  70% {
    transform: translate3d(var(--float-x-end, -6px), var(--float-travel-end, -20px), 0)
      rotate(var(--float-rot-e, 7deg));
  }
  100% {
    transform: translate3d(0, var(--float-travel-mid, -12px), 0)
      rotate(var(--float-rot-e, 7deg));
  }
}
@media (prefers-reduced-motion: reduce) {
  .hero-float-app {
    animation: none;
  }
}

/* ─── Project Card Featured ──────────────────────────────────── */
.project-card--featured {
  border-color: #d3d3d3;
  background: linear-gradient(180deg, #fbfbfb 0%, #ffffff 52%);
}

/* ─── Primary Skill Tags ─────────────────────────────────────── */
.skill-tag--primary {
  background: var(--accent-light);
  border-color: #c8c8c8;
  color: var(--accent);
  font-weight: 600;
}
.skill-tag--primary:hover { background: #ececec; border-color: var(--accent); }

/* ─── Interaction States ─────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.store-btn:active { transform: translateY(0) scale(0.97); opacity: 0.9; }

.footer-link svg { transition: transform 0.15s; }
.footer-link:hover svg { transform: scale(1.1); }

.nav-links a.active { color: var(--accent); position: relative; }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; padding: 10px; }
  .project-grid { grid-template-columns: 1fr; }
  .career-card { padding: 24px; }
  .section { padding: 64px 0; }
  .career-header { flex-direction: column; gap: 4px; }
  .award-card { padding: 16px; }
  .biz-card__name-ko { letter-spacing: 0.08em; }
  .store-btn { min-height: 44px; padding: 10px 16px; }
  .skill-tag { padding: 8px 14px; }
  .hero-float-app { display: none; }
}