:root {
  --background: #0b0d10;
  --surface: #14181e;
  --surface-hover: #1b222b;
  --text: #f5f7fa;
  --muted: #aab4c1;
  --line: #2a3440;
  --accent: #349ceb;
  --accent-dark: #349ceb;
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

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

.intro-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  background: var(--background);
  animation: intro-hold 2.1s ease forwards;
}

.intro-mark {
  margin: 0;
  color: var(--accent);
  font-weight: 800;
  font-size: clamp(2.5rem, 10vw, 5rem);
  letter-spacing: 0.08em;
  opacity: 0;
  transform: scale(0.85);
  animation: intro-mark-in 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.15s forwards;
}

.intro-tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.3em;
  opacity: 0;
  animation: intro-tagline-in 0.6s ease 0.6s forwards;
}

@keyframes intro-mark-in {
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes intro-tagline-in {
  to {
    opacity: 1;
  }
}

@keyframes intro-hold {
  0%,
  70% {
    opacity: 1;
    visibility: visible;
  }
  100% {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
}

html.intro-skip .intro-overlay {
  display: none;
}

.site-header {
  width: min(var(--max-width), calc(100% - 120px));
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.logo {
  border: 1px solid var(--accent);
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 6px 9px;
}

nav {
  display: flex;
  gap: 22px;
}

nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

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

.hero,
.section {
  width: min(var(--max-width), calc(100% - 120px));
  margin: 0 auto;
}

.hero {
  min-height: 560px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 0;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  margin: 0 0 12px;
}

h1,
h2,
h3 {
  line-height: 1.1;
  margin-top: 0;
}

h1 {
  font-size: clamp(3.2rem, 9vw, 7.5rem);
  letter-spacing: -0.07em;
  margin-bottom: 22px;
}

h2 {
  font-size: clamp(2.1rem, 5vw, 4rem);
  letter-spacing: -0.045em;
  margin-bottom: 18px;
}

h3 {
  font-size: 1.8rem;
  margin-bottom: 14px;
}

.hero-text {
  max-width: 700px;
  color: var(--muted);
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  margin: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-block;
  padding: 12px 18px;
  font-weight: 700;
  border: 1px solid var(--line);
}

.button.primary {
  background: var(--accent);
  color: #06110a;
  border-color: var(--accent);
}

.button.primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

.button.secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.section {
  border-top: 1px solid var(--line);
  padding: 88px 0;
}

.section-heading {
  max-width: 730px;
  margin-bottom: 38px;
}

.section-heading > p:last-child,
.about-text p,
.contact-section > p:not(.eyebrow) {
  color: var(--muted);
  font-size: 1.25rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.project-card {
  background: var(--surface);
  border: 1.5px solid var(--line);
  min-height: 275px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.project-card:hover {
  transform: translateY(-5px);
  background: var(--surface-hover);
  border-color: var(--accent);
}

.project-number {
  color: var(--accent);
  font-family: "Courier New", monospace;
  font-size: 0.9rem;
  margin-bottom: 46px;
}

.project-card p {
  color: var(--muted);
  font-size: 1.2rem;
  margin: 0;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 24px;
}

.tags span {
  border: 1px solid var(--line);
  color: #c8d0d9;
  font-size: 0.76rem;
  padding: 4px 8px;
}

.about-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.about-text {
  max-width: 620px;
}

.contact-section {
  text-align: center;
  padding-bottom: 110px;
}

.contact-section .eyebrow {
  margin-top: 0;
}

.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 28px;
}

.contact-links a {
  border-bottom: 1px solid var(--accent);
  color: var(--accent);
  font-weight: 700;
  padding-bottom: 3px;
}

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
  padding: 26px 20px;
  text-align: center;
}

@media (max-width: 720px) {
  .site-header {
    min-height: 68px;
  }

  nav {
    gap: 14px;
    font-size: 0.85rem;
  }

  .hero {
    min-height: 500px;
  }

  .project-grid,
  .about-section {
    grid-template-columns: 1fr;
  }

  .about-section {
    gap: 6px;
  }

  .section {
    padding: 62px 0;
  }

  .project-card {
    min-height: 245px;
  }
}
.project-link {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

.project-link h3 {
  color: var(--text);
}

.project-link:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}
.project-hero,
.project-content {
  width: min(var(--max-width), calc(100% - 120px));
  margin: 0 auto;
}

.project-hero {
  padding: 74px 0 64px;
  border-bottom: 1px solid var(--line);
}

.project-hero h1 {
  max-width: 950px;
  font-size: clamp(3rem, 7vw, 6.2rem);
}

.project-hero-tags {
  margin-top: 28px;
}

.back-link {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 64px;
}

.back-link:hover {
  text-decoration: underline;
}

.project-content {
  padding: 76px 0 110px;
}

.project-intro {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  padding-bottom: 76px;
}

.project-intro > div {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 25px;
}

.project-intro h2,
.media-section h2 {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}

.project-intro h2 {
  color: var(--accent);
}

.project-intro p:not(.eyebrow),
.technical-list {
  color: var(--muted);
  font-size: 1.15rem;
}

.media-note {
  color: var(--muted);
}

.media-section {
  border-top: 1px solid var(--line);
  padding: 65px 0;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.media-card {
  background: var(--surface);
  border: 1px solid var(--line);
  margin: 0;
}

.media-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: block;
  object-fit: cover;
}

figcaption {
  font-size: 1.15rem;
}

.media-card figcaption {
  color: var(--muted);
  padding: 14px;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.video-card {
  background: var(--surface);
  border: 1px solid var(--line);
  margin: 0;
}

.video-card .project-video {
  width: 100%;
  aspect-ratio: 1080 / 1920;
  object-fit: cover;
  margin-top: 0;
  border: none;
}

.video-card figcaption {
  color: var(--muted);
  padding: 14px;
}

.media-feature {
  background: var(--surface);
  border: 1px solid var(--line);
  margin: 28px 0 0;
}

.media-feature img {
  width: 100%;
  max-height: 900px;
  display: block;
  object-fit: cover;
}

.media-feature figcaption {
  color: var(--muted);
  padding: 14px;
}

.carousel {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
}

.carousel-compact {
  max-width: 700px;
}

.carousel-track {
  flex: 1;
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--line);
}

.carousel-track::-webkit-scrollbar {
  display: none;
}

.carousel-slide {
  flex: 0 0 100%;
  scroll-snap-align: start;
  margin: 0;
}

.carousel-slide img {
  width: 100%;
  aspect-ratio: 2200 / 1700;
  max-height: none;
  display: block;
  object-fit: contain;
  background: #000;
}

.carousel-slide figcaption {
  color: var(--muted);
  padding: 14px;
}

.carousel-btn {
  flex: none;
  width: 44px;
  height: 44px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.carousel-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

@media (max-width: 720px) {
  .carousel {
    gap: 8px;
  }

  .carousel-btn {
    width: 36px;
    height: 36px;
    font-size: 1.2rem;
  }
}

.project-video {
  width: min(900px, 100%);
  background: #000;
  border: 1px solid var(--line);
  display: block;
  margin-top: 28px;
}

.project-video-small {
  width: min(420px, 100%);
}

.media-note {
  font-size: 0.9rem;
}

.technical-list {
  line-height: 2;
  padding-left: 20px;
}

@media (max-width: 720px) {
  .project-intro,
  .media-grid,
  .video-grid {
    grid-template-columns: 1fr;
  }

  .project-hero {
    padding: 50px 0;
  }

  .back-link {
    margin-bottom: 42px;
  }

  .project-content {
    padding-top: 50px;
  }
}