:root {
  color-scheme: light;
  --ink: #161719;
  --muted: #5d626b;
  --paper: #f7f5ef;
  --panel: #ffffff;
  --line: #ded9ce;
  --charcoal: #111214;
  --charcoal-2: #23262a;
  --accent: #2f8f83;
  --accent-2: #c08a34;
  --shadow: 0 18px 60px rgba(17, 18, 20, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(17, 18, 20, 0.84);
  backdrop-filter: blur(18px);
  color: #f7f5ef;
}

.nav {
  width: min(1180px, calc(100% - 40px));
  min-height: 58px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-weight: 800;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  gap: 20px;
  color: rgba(247, 245, 239, 0.78);
  font-size: 14px;
}

.nav-links a:hover {
  color: #ffffff;
}

.hero {
  position: relative;
  min-height: calc(100vh - 58px);
  display: grid;
  align-items: end;
  overflow: hidden;
  background: var(--charcoal);
  color: #ffffff;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(17, 18, 20, 0.92) 0%, rgba(17, 18, 20, 0.54) 34%, rgba(17, 18, 20, 0.08) 72%),
    linear-gradient(0deg, rgba(17, 18, 20, 0.72) 0%, rgba(17, 18, 20, 0) 42%);
}

.hero-media img {
  width: 100%;
  height: 109%;
  object-fit: cover;
  object-position: 58% top;
  transform: translateY(-8%);
}

.hero-copy {
  position: relative;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 80px 0 72px;
}

.venue,
.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(38px, 6.2vw, 74px);
  line-height: 1.02;
  letter-spacing: 0;
}

.authors {
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 18px;
}

.tagline {
  max-width: 720px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 19px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 6px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  font-weight: 700;
}

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

.section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 82px 0;
}

.section.narrow {
  width: min(920px, calc(100% - 40px));
}

.section h2 {
  max-width: 840px;
  margin: 0 0 20px;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.08;
}

.section p {
  color: var(--muted);
  font-size: 18px;
}

.method-band {
  width: 100%;
  padding-inline: max(20px, calc((100% - 1180px) / 2));
  background: #e9ece6;
}

.section-head {
  margin-bottom: 32px;
}

.section-head p {
  max-width: 780px;
}

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

.method-step,
.result-figure,
.video-placeholder,
.video-tile {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.method-step {
  padding: 24px;
}

.step-index {
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
}

.method-step h3 {
  margin: 12px 0 10px;
  font-size: 22px;
  line-height: 1.2;
}

.method-step p {
  margin: 0;
  font-size: 16px;
}

.figure-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(420px, 1.4fr);
  gap: 22px;
  align-items: start;
}

.result-row {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(520px, 1.28fr);
  gap: 22px;
  align-items: stretch;
}

.result-figure {
  margin: 0;
  overflow: hidden;
}

.result-figure img {
  width: 100%;
  background: #f0eee7;
}

.result-figure figcaption {
  padding: 16px 18px 18px;
  color: var(--muted);
  font-size: 15px;
}

.observation-panel {
  min-height: 100%;
  align-self: stretch;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(47, 143, 131, 0.12), rgba(192, 138, 52, 0.1)),
    #ffffff;
  box-shadow: var(--shadow);
}

.panel-kicker {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.observation-panel ul {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.observation-panel li {
  position: relative;
  padding-left: 20px;
  color: var(--charcoal-2);
  font-size: 17px;
  line-height: 1.48;
}

.observation-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.inline-video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
}

.inline-video {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(222, 217, 206, 0.92);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.78);
}

.inline-video video {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: var(--charcoal);
}

.inline-video figcaption {
  padding: 8px 10px 10px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.3;
}

.result-figure.compact {
  align-self: start;
}

.split {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(360px, 1fr);
  gap: 36px;
  align-items: center;
}

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

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

.video-placeholder {
  min-height: 210px;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(47, 143, 131, 0.12), rgba(192, 138, 52, 0.12)),
    #ffffff;
  color: var(--muted);
  text-align: center;
  font-weight: 700;
}

.video-tile {
  margin: 0;
  overflow: hidden;
}

.video-tile video {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #111214;
}

.video-tile figcaption {
  padding: 14px 16px 16px;
  color: var(--muted);
  font-size: 14px;
}

code {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 2px 6px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--charcoal-2);
  font-size: 0.92em;
}

.footer {
  padding: 28px 20px 38px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font-size: 14px;
}

.footer p {
  margin: 0;
}

@media (max-width: 860px) {
  .nav {
    width: min(100% - 28px, 1180px);
  }

  .nav-links {
    gap: 12px;
    font-size: 13px;
  }

  .hero {
    min-height: 760px;
  }

  .hero-media img {
    object-position: 68% center;
  }

  .hero-media::after {
    background:
      linear-gradient(0deg, rgba(17, 18, 20, 0.9) 0%, rgba(17, 18, 20, 0.4) 66%, rgba(17, 18, 20, 0.08) 100%);
  }

  .hero-copy {
    width: min(100% - 28px, 1180px);
    padding: 72px 0 48px;
  }

  .tagline,
  .section p {
    font-size: 17px;
  }

  .method-grid,
  .figure-grid,
  .result-row,
  .split,
  .video-grid {
    grid-template-columns: 1fr;
  }

  .section {
    width: min(100% - 28px, 1180px);
    padding: 58px 0;
  }

  .section.narrow {
    width: min(100% - 28px, 920px);
  }

  .method-band {
    padding-inline: 14px;
  }
}

@media (max-width: 580px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 0;
    gap: 8px;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
  }

  .hero {
    min-height: 720px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}