:root {
  --ink: #17242b;
  --muted: #657078;
  --paper: #f6f3ed;
  --paper-deep: #ece7de;
  --card: rgba(255, 255, 255, 0.84);
  --teal: #0d786f;
  --teal-dark: #07534f;
  --coral: #e96d52;
  --line: rgba(23, 36, 43, 0.14);
  --shadow: 0 24px 80px rgba(30, 45, 51, 0.11);
  --radius-lg: 30px;
  --radius-md: 20px;
  --radius-sm: 13px;
}

@font-face {
  font-family: "Outfit";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("./assets/fonts/outfit.woff2") format("woff2");
}

@font-face {
  font-family: "Raleway";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("./assets/fonts/raleway_normal_600.woff2") format("woff2");
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 2%, rgba(233, 109, 82, 0.09), transparent 26rem),
    radial-gradient(circle at 94% 18%, rgba(13, 120, 111, 0.1), transparent 30rem),
    var(--paper);
  font-family: "Outfit", "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

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

button,
input,
audio,
video {
  font: inherit;
}

video,
img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 4vw;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.88);
  background: rgba(9, 13, 15, 0.64);
  backdrop-filter: blur(18px);
}

.brand,
.site-nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand.nav-logo {
  gap: 10px;
  letter-spacing: 0;
}

.nav-logo-frame {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 104px;
  height: 30px;
  padding: 3px 6px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(10px);
}

.nav-logo-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  clip-path: inset(1% 0 3% 0);
}

.brand-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 999px;
  color: #fff;
  background: var(--teal);
  font-size: 0.72rem;
  font-weight: 800;
}

.site-nav {
  gap: clamp(16px, 2.4vw, 34px);
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-shell {
  width: min(100% - 48px, 1240px);
  margin: 0 auto;
}

.section-kicker {
  margin-bottom: 18px;
  color: var(--coral);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero {
  position: relative;
  display: grid;
  min-height: 100vh;
  overflow: hidden;
  place-items: center;
  color: #fff;
  background: #101718;
  isolation: isolate;
}

.hero-background,
.hero-background::after,
.hero-background video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-background video {
  object-fit: cover;
  object-position: center;
  filter: brightness(0.68) blur(1.6px);
}

.hero-background::after {
  content: "";
  background:
    linear-gradient(180deg, rgba(10, 11, 13, 0.24), rgba(8, 9, 10, 0.48)),
    radial-gradient(circle at center, transparent 12%, rgba(8, 9, 10, 0.22) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 120px 22px 70px;
  text-align: center;
}

.hero-copy {
  width: min(1180px, 100%);
  margin: 0 auto;
}

.hero-content h1 {
  display: grid;
  gap: 18px;
  margin: 0;
  color: #fff;
  text-shadow: 0 4px 28px rgba(0, 0, 0, 0.48);
}

.hero-brand-title {
  display: block;
  font-size: clamp(3.2rem, 7vw, 6.8rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
}

.hero-subtitle {
  display: block;
  max-width: 1080px;
  margin: 0 auto;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(1.15rem, 2.1vw, 1.55rem);
  font-weight: 300;
  letter-spacing: 0.01em;
  line-height: 1.35;
}

.author-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-top: 26px;
  color: rgba(255, 255, 255, 0.72);
}

.author-placeholder p {
  margin: 0;
}

.author-line {
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1rem, 1.25vw, 1.08rem);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.author-affiliations {
  color: rgba(255, 255, 255, 0.72);
  font-size: clamp(0.88rem, 1vw, 1rem);
  font-weight: 300;
}

.author-note {
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.84rem;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.action-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(128, 128, 128, 0.28);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.16);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.abstract-section {
  padding: 110px 0 88px;
}

.abstract-copy {
  width: min(900px, 100%);
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
  line-height: 1.8;
}

.contribution-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 42px;
}

.contribution-grid article {
  min-height: 188px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  box-shadow: var(--shadow);
}

.contribution-grid span {
  color: var(--coral);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.contribution-grid h3 {
  margin: 26px 0 10px;
  font-size: 1.1rem;
}

.contribution-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.demo-section {
  padding: 0 0 96px;
}

.section-with-cover {
  width: 100%;
  padding-top: 72px;
}

.section-cover {
  position: relative;
  display: grid;
  width: 100vw;
  min-height: min(72vh, 760px);
  margin-left: calc(50% - 50vw);
  overflow: hidden;
  place-items: center;
  color: #fff;
  background: #0c0e10;
}

.section-cover::after {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 9, 10, 0.42), rgba(8, 9, 10, 0.68)),
    radial-gradient(circle at center, rgba(8, 9, 10, 0.04), rgba(8, 9, 10, 0.52));
}

.section-cover > video {
  position: absolute;
  inset: -10px;
  width: calc(100% + 20px);
  height: calc(100% + 20px);
  object-fit: cover;
  filter: brightness(0.54) blur(5px);
  transform: scale(1.025);
}

.section-cover-content {
  position: relative;
  z-index: 2;
  width: min(820px, calc(100% - 40px));
  margin: 0 auto;
  padding: 70px 0;
  text-align: center;
}

.section-cover-content .section-kicker {
  margin-bottom: 14px;
  color: rgba(255, 255, 255, 0.66);
}

.section-cover-content h2 {
  margin: 0;
  font-size: clamp(3.2rem, 7vw, 6.8rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
  text-shadow: 0 5px 30px rgba(0, 0, 0, 0.48);
}

.section-cover-content h2.is-single-line {
  font-size: clamp(2.45rem, 4.7vw, 4.6rem);
  white-space: nowrap;
}

.section-cover-content p {
  max-width: 650px;
  margin: 24px auto 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.6;
}

.section-cover-content p.is-single-line-copy {
  max-width: none;
  white-space: nowrap;
}

.expanded-subtasks {
  width: min(100% - 48px, 1240px);
  margin: 0 auto;
  padding-top: 86px;
}

.subtask-section + .subtask-section {
  padding-top: 76px;
}

.subtask-heading {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1fr);
  gap: 38px;
  align-items: end;
  margin-bottom: 28px;
}

.subtask-heading.is-stacked {
  grid-template-columns: 1fr;
  gap: 0;
  align-items: start;
}

.subtask-heading span {
  display: block;
  margin-bottom: 10px;
  color: var(--coral);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.subtask-heading h3 {
  margin: 0;
  font-size: clamp(2rem, 4.2vw, 4.2rem);
  font-weight: 540;
  letter-spacing: -0.055em;
  line-height: 1;
}

.subtask-heading h3.no-wrap {
  white-space: nowrap;
}

.subtask-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

.subtask-heading.is-stacked p {
  max-width: 640px;
  margin-top: 16px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.load-more-row {
  display: flex;
  justify-content: center;
  margin-top: 30px;
}

.load-more-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 32px rgba(30, 45, 51, 0.08);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
}

.load-more-button:hover {
  border-color: rgba(13, 120, 111, 0.34);
  color: var(--teal-dark);
  background: rgba(255, 255, 255, 0.9);
}

.demo-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.video-pair-toolbar {
  display: flex;
  justify-content: flex-end;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: #0c0f11;
}

.sync-play-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 0 13px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.82);
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
}

.sync-play-button:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.13);
}

.sync-play-icon {
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 8px solid currentColor;
}

.sync-play-button.is-playing .sync-play-icon {
  width: 8px;
  height: 10px;
  border: 0;
  background:
    linear-gradient(90deg, currentColor 0 3px, transparent 3px 5px, currentColor 5px 8px);
}

.demo-video-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  background: #080b0d;
}

.demo-video-block {
  min-width: 0;
  margin: 0;
}

.demo-video-block + .demo-video-block {
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.demo-video-block figcaption {
  display: flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  color: rgba(255, 255, 255, 0.72);
  background: #0c0f11;
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.demo-media {
  position: relative;
  background: #080b0d;
  aspect-ratio: 16 / 9;
}

.demo-media video,
.demo-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #080b0d;
}

.demo-card-meta {
  display: grid;
  gap: 18px;
  padding: 22px;
}

.case-heading {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  justify-content: space-between;
}

.demo-card h4 {
  margin: 0;
  font-size: 1.05rem;
}

.demo-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.prompt-panel {
  display: grid;
  gap: 13px;
  padding-top: 2px;
}

.prompt-row {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.prompt-label {
  padding-top: 2px;
  color: var(--coral);
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.demo-card .prompt-text {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.62;
}

.ref-strip {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
}

.ref-strip img {
  width: auto;
  height: 62px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-deep);
  object-fit: contain;
}

footer {
  padding: 64px 24px;
  color: var(--muted);
  text-align: center;
}

footer p {
  margin: 0 0 6px;
}

@media (max-width: 860px) {
  .site-header {
    position: absolute;
  }

  .site-nav {
    display: none;
  }

  .nav-logo-frame {
    width: 88px;
    height: 27px;
    padding: 3px 5px;
  }

  .hero-brand-title {
    font-size: clamp(3.4rem, 18vw, 5.2rem);
  }

  .hero-subtitle {
    font-size: 1.06rem;
  }

  .hero-content {
    padding: 98px 14px 70px;
  }

  .author-line br {
    display: none;
  }

  .contribution-grid,
  .gallery-grid,
  .subtask-heading {
    grid-template-columns: 1fr;
  }

  .demo-video-pair,
  .prompt-row {
    grid-template-columns: 1fr;
  }

  .demo-video-block + .demo-video-block {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    border-left: 0;
  }

  .case-heading {
    display: grid;
  }

  .section-cover {
    min-height: 64vh;
  }

  .section-cover-content h2 {
    font-size: clamp(2.8rem, 15vw, 5rem);
  }

  .section-cover-content h2.is-single-line {
    font-size: clamp(1.45rem, 7vw, 3.8rem);
  }

  .section-cover-content p.is-single-line-copy {
    font-size: 0.66rem;
  }

}