:root {
  --bg: #0e0f13;
  --bg-alt: #15161c;
  --fg: #f3f3f5;
  --fg-dim: #9a9ca5;
  --accent: #7c9bff;
  --card: #1b1d25;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Pretendard", "Apple SD Gothic Neo", system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

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

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 6vw;
  position: sticky;
  top: 0;
  background: rgba(14, 15, 19, 0.85);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.nav__logo {
  font-weight: 700;
  letter-spacing: 0.08em;
}

.nav__links {
  display: flex;
  gap: 2rem;
  font-size: 0.95rem;
  color: var(--fg-dim);
}

.nav__links a:hover {
  color: var(--accent);
}

.hero {
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 6vw;
  max-width: 900px;
}

.hero__eyebrow {
  color: var(--accent);
  letter-spacing: 0.15em;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin: 0 0 1.2rem;
}

.hero__desc {
  color: var(--fg-dim);
  font-size: 1.05rem;
  max-width: 560px;
}

.hero__cta {
  margin-top: 2rem;
  display: inline-block;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  transition: background 0.2s, color 0.2s;
}

.hero__cta:hover {
  background: var(--accent);
  color: var(--bg);
}

.section {
  padding: 6rem 6vw;
}

.section--alt {
  background: var(--bg-alt);
}

.section__title {
  font-size: 1.9rem;
  margin-bottom: 2rem;
}

.section__text {
  color: var(--fg-dim);
  max-width: 640px;
}

.skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
}

.skill-card {
  background: var(--card);
  border-radius: 12px;
  padding: 1.4rem;
}

.skill-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.skill-card p {
  margin: 0;
  color: var(--fg-dim);
  font-size: 0.9rem;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.work-card {
  background: var(--card);
  border-radius: 14px;
  overflow: hidden;
}

.work-card__thumb {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2a2d3a, #1b1d25);
  color: var(--fg-dim);
  letter-spacing: 0.1em;
  font-size: 0.85rem;
}

.work-card h3 {
  margin: 1rem 1.2rem 0.3rem;
  font-size: 1.05rem;
}

.work-card p {
  margin: 0 1.2rem 1.2rem;
  color: var(--fg-dim);
  font-size: 0.9rem;
}

.work-note {
  margin-top: 1.5rem;
  color: var(--fg-dim);
  font-size: 0.85rem;
}

.contact__email {
  display: inline-block;
  margin-top: 1rem;
  font-size: 1.3rem;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.finger-demo {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 2rem;
}

.finger-demo__video-wrap {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 4 / 3;
  border-radius: 14px;
  overflow: hidden;
  background: var(--card);
}

.finger-demo__video,
.finger-demo__canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: scaleX(-1);
}

.finger-demo__result {
  flex: 1;
  min-width: 240px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.finger-demo__count {
  font-size: 1.2rem;
  margin: 0;
}

.finger-demo__count span {
  color: var(--accent);
  font-weight: 700;
}

.finger-demo__image {
  width: 100%;
  max-width: 360px;
  border-radius: 14px;
  display: block;
}

.finger-demo__message {
  color: var(--fg-dim);
  margin: 0;
}

.footer {
  text-align: center;
  padding: 2rem;
  color: var(--fg-dim);
  font-size: 0.85rem;
}