:root {
  --ink: #171713;
  --paper: #f0eddf;
  --acid: #d7ff3f;
  --line: rgba(23, 23, 19, 0.24);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

main {
  min-height: 100vh;
  overflow: hidden;
}

.site-header {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3vw;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  font-size: clamp(1rem, 1.35vw, 1.25rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  text-decoration: none;
}

.youtube-link {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform .2s ease, background-color .2s ease, color .2s ease;
}

.youtube-link:hover { transform: translateY(-2px); }
.youtube-link:focus-visible { outline: 3px solid var(--ink); outline-offset: 5px; }
.youtube-link--small { font-size: .78rem; text-transform: uppercase; letter-spacing: .14em; }

.hero {
  padding: clamp(2.5rem, 6vw, 6rem) 3vw clamp(4rem, 8vw, 8rem);
}

.hero-copy {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  margin-bottom: clamp(2rem, 4vw, 4rem);
}

.eyebrow {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: .6rem;
  margin: 0;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.eyebrow span { width: 8px; height: 8px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 0 1px var(--ink); }

h1 {
  grid-column: 1 / -1;
  margin: 0;
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 900;
  line-height: .7;
  letter-spacing: -.095em;
}

h1 span { color: transparent; -webkit-text-stroke: 2px var(--ink); }

.intro {
  position: absolute;
  right: 0;
  bottom: .6vw;
  margin: 0;
  max-width: 23rem;
  font-size: clamp(.8rem, 1.15vw, 1.1rem);
  line-height: 1.45;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .02em;
}

.video-shell {
  position: relative;
  width: min(100%, 32rem);
  aspect-ratio: 9 / 16;
  margin-inline: auto;
  background: #111;
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 22px 60px rgba(23, 23, 19, .16);
}

.video-label {
  position: absolute;
  z-index: 3;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 1rem 1.2rem;
  color: var(--paper);
  font-size: .66rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  pointer-events: none;
}

.presentation-video {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.video-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  color: #fff;
  background:
    radial-gradient(circle at 72% 24%, rgba(215, 255, 63, .19), transparent 28%),
    repeating-linear-gradient(115deg, transparent 0 25px, rgba(255,255,255,.018) 25px 27px),
    #111;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .2em;
}

.play-mark {
  display: grid;
  place-items: center;
  width: clamp(4rem, 7vw, 6.5rem);
  aspect-ratio: 1;
  padding-left: .35rem;
  border: 1px solid rgba(255,255,255,.65);
  border-radius: 50%;
  color: var(--acid);
  font-size: 1.25rem;
}

.watch-section {
  display: grid;
  grid-template-columns: minmax(9rem, 1fr) 4fr;
  padding: clamp(4rem, 9vw, 9rem) 3vw;
  background: var(--ink);
  color: var(--paper);
}

.section-number { margin: .6rem 0 0; font-size: .72rem; letter-spacing: .12em; }
.section-kicker { margin: 0 0 2rem; font-size: .7rem; text-transform: uppercase; letter-spacing: .14em; color: rgba(240,237,223,.62); }

h2 {
  margin: 0 0 clamp(2.5rem, 5vw, 5rem);
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 900;
  line-height: .76;
  letter-spacing: -.08em;
}

.youtube-link--large {
  width: fit-content;
  padding: 1rem 1.15rem;
  border-bottom: 1px solid rgba(240,237,223,.45);
  font-size: clamp(.85rem, 1.2vw, 1.1rem);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.youtube-link--large:hover { background: var(--acid); color: var(--ink); border-color: var(--acid); }
.youtube-icon { display: grid; place-items: center; width: 2rem; height: 1.4rem; border-radius: .35rem; background: #ff0033; color: white; font-size: .6rem; }

.contact-section {
  display: grid;
  grid-template-columns: minmax(9rem, 1fr) 4fr;
  padding: clamp(4rem, 9vw, 9rem) 3vw;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.contact-section h2 { margin-bottom: clamp(3rem, 6vw, 6rem); }

.contact-detail {
  display: grid;
  grid-template-columns: minmax(7rem, 1fr) 4fr;
  align-items: baseline;
  padding-top: 1.2rem;
  border-top: 1px solid var(--ink);
}

.contact-detail span {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.contact-detail a {
  width: fit-content;
  font-size: clamp(1rem, 2vw, 1.8rem);
  font-weight: 700;
  text-underline-offset: .25em;
}

.contact-detail a:hover { text-decoration-thickness: .15em; }
.contact-detail a:focus-visible { outline: 3px solid var(--ink); outline-offset: 5px; }

footer {
  display: flex;
  justify-content: space-between;
  padding: 1.4rem 3vw;
  border-top: 1px solid rgba(240,237,223,.16);
  background: var(--ink);
  color: rgba(240,237,223,.55);
  font-size: .62rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

footer a {
  color: var(--paper);
  text-underline-offset: .3em;
  transition: color .2s ease;
}

footer a:hover { color: var(--acid); }
footer a:focus-visible { outline: 2px solid var(--acid); outline-offset: 4px; }

@media (max-width: 720px) {
  .site-header { height: 68px; padding-inline: 5vw; }
  .hero { padding-inline: 5vw; }
  .hero-copy { display: block; padding-top: 2.2rem; }
  .eyebrow { left: 0; right: auto; }
  h1 { font-size: clamp(2.8rem, 14vw, 4.8rem); line-height: .8; }
  h1 span { -webkit-text-stroke-width: 1px; }
  .intro { position: static; margin-top: 1.8rem; }
  .video-shell { width: min(100%, 26rem); aspect-ratio: 9 / 16; }
  .watch-section, .contact-section { grid-template-columns: 1fr; padding-inline: 5vw; }
  .section-number { margin-bottom: 3.5rem; }
  h2 { font-size: clamp(3rem, 15vw, 5.5rem); }
  .contact-detail { grid-template-columns: 1fr; gap: 1.2rem; }
  footer { flex-direction: column; gap: .8rem; padding-inline: 5vw; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .youtube-link { transition: none; }
}