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

html {
  scroll-behavior: smooth;
}

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

ul {
  list-style: none;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #070809;
  color: #adbac7;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.section {
  padding: 100px 40px;
  max-width: 1100px;
  margin: 0 auto;
}
.section__label {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 12px;
  color: #22c55e;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  margin-bottom: 12px;
}
.section__label::before {
  content: "//";
  color: #545d68;
  margin-right: 8px;
}
.section__title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 48px;
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  background: rgba(7, 8, 9, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #1e2a38;
}
@media (max-width: 768px) {
  .nav {
    padding: 0 24px;
  }
}
.nav__logo {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 15px;
  color: #39ff14;
  letter-spacing: -0.01em;
}
.nav__logo span {
  color: #545d68;
}
.nav__links {
  display: flex;
  gap: 32px;
}
@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: #070809;
    border-bottom: 1px solid #1e2a38;
  }
  .nav__links.is-open {
    display: flex;
  }
}
.nav__link {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 13px;
  color: #545d68;
  transition: color 0.2s;
}
.nav__link:hover {
  color: #39ff14;
}
.nav__link--active {
  color: #adbac7;
}
@media (max-width: 768px) {
  .nav__link {
    padding: 14px 24px;
    border-bottom: 1px solid #1e2a38;
  }
  .nav__link:last-child {
    border-bottom: none;
  }
}
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  padding: 4px;
}
@media (max-width: 768px) {
  .nav__hamburger {
    display: flex;
  }
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #adbac7;
  border-radius: 2px;
  transition: all 0.25s ease;
}
.nav__hamburger.is-open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav__hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__hamburger.is-open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 6px;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn--primary {
  background: #39ff14;
  color: #000;
  border-color: #39ff14;
}
.btn--primary:hover {
  filter: brightness(1.15);
}
.btn--ghost {
  background: transparent;
  color: #22c55e;
  border-color: #1e2a38;
}
.btn--ghost:hover {
  border-color: #22c55e;
  color: #39ff14;
}

.footer {
  border-top: 1px solid #1e2a38;
  padding: 32px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer__brand {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 13px;
  color: #39ff14;
}
.footer__copy {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 12px;
  color: #545d68;
}
.footer__links {
  display: flex;
  gap: 24px;
}
.footer__link, .footer__back {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 12px;
  color: #545d68;
  transition: color 0.2s;
}
.footer__link:hover, .footer__back:hover {
  color: #39ff14;
}

.cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: #39ff14;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 40px 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(#1e2a38 1px, transparent 1px), linear-gradient(90deg, #1e2a38 1px, transparent 1px);
  background-size: 5px 5px;
  opacity: 0.18;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.hero__inner {
  position: relative;
  max-width: 860px;
}
.hero__prompt {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 14px;
  color: #545d68;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero__prompt::before {
  content: ">";
  color: #39ff14;
}
.hero__title {
  font-size: clamp(42px, 7vw, 88px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: #fff;
  margin-bottom: 20px;
}
.hero__title em {
  font-style: normal;
  color: #39ff14;
}
.hero__subtitle {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: clamp(14px, 2vw, 17px);
  color: #545d68;
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 560px;
}
.hero__subtitle .hl {
  color: #22c55e;
}
.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.about {
  border-top: 1px solid #1e2a38;
}
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
@media (max-width: 768px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}
.about__text {
  font-size: 17px;
  color: #adbac7;
  line-height: 1.75;
  margin-bottom: 20px;
}
.about__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
}
.about__tag {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 4px;
  background: #0d3320;
  color: #22c55e;
  border: 1px solid rgba(57, 255, 20, 0.15);
}
.about__terminal {
  background: #0f1117;
  border: 1px solid #1e2a38;
  border-radius: 10px;
  overflow: hidden;
}
.about__terminal-bar {
  background: #161b22;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid #1e2a38;
}
.about__terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.about__terminal-dot:nth-child(1) {
  background: #ff5f57;
}
.about__terminal-dot:nth-child(2) {
  background: #febc2e;
}
.about__terminal-dot:nth-child(3) {
  background: #28c840;
}
.about__terminal-title {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 12px;
  color: #545d68;
  margin: 0 auto;
}
.about__terminal-body {
  padding: 24px;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 13px;
  line-height: 2;
}

.tl-key {
  color: #79c0ff;
}

.tl-val {
  color: #22c55e;
}

.tl-str {
  color: #a5d6ff;
}

.tl-dim {
  color: #545d68;
}

.projects {
  border-top: 1px solid #1e2a38;
}
.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (max-width: 700px) {
  .projects__grid {
    grid-template-columns: 1fr;
  }
}

.project-card {
  background: #0f1117;
  border: 1px solid #1e2a38;
  border-radius: 10px;
  padding: 28px;
  transition: border-color 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(57, 255, 20, 0.04), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}
.project-card:hover {
  border-color: rgba(57, 255, 20, 0.3);
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.06);
}
.project-card:hover::before {
  opacity: 1;
}
.project-card:hover .project-card__arrow {
  color: #39ff14;
  transform: translate(3px, -3px);
}
.project-card--featured {
  grid-column: span 2;
  flex-direction: row;
  align-items: center;
  gap: 40px;
}
@media (max-width: 700px) {
  .project-card--featured {
    grid-column: span 1;
    flex-direction: column;
    gap: 20px;
  }
}
.project-card__year {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 11px;
  color: #545d68;
  letter-spacing: 0.08em;
}
.project-card__title {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.01em;
}
.project-card__desc {
  font-size: 14px;
  color: #545d68;
  line-height: 1.6;
  flex: 1;
}
.project-card__tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.project-card__tag {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: #0d3320;
  color: #22c55e;
}
.project-card__arrow {
  font-size: 20px;
  color: #545d68;
  transition: color 0.2s, transform 0.2s;
  margin-left: auto;
}

.lab {
  border-top: 1px solid #1e2a38;
}
.lab__card {
  background: #0f1117;
  border: 1px solid #1e2a38;
  border-radius: 12px;
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s;
  cursor: pointer;
}
@media (max-width: 700px) {
  .lab__card {
    flex-direction: column;
    padding: 32px;
  }
}
.lab__card::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 255, 20, 0.08), transparent 70%);
  pointer-events: none;
}
.lab__card:hover {
  border-color: rgba(57, 255, 20, 0.3);
}
.lab__card:hover .lab__cta {
  gap: 12px;
}
.lab__icon {
  font-size: 48px;
}
.lab__content {
  flex: 1;
}
.lab__title {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.lab__desc {
  font-size: 16px;
  color: #545d68;
  line-height: 1.65;
  max-width: 480px;
}
.lab__cta {
  font-family: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  font-size: 14px;
  color: #39ff14;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s;
}