:root {
  --color-bg: #f7f8f9;
  --color-surface: #ffffff;
  --color-ink: #1a1b1f;
  --color-ink-soft: #37383f;
  --color-muted: #6b6b6b;
  --color-line: #1a1b1f;
  --color-accent: #cc2936;
  --color-red: #d23a3a;
  --color-blue: #2d5cf6;
  --color-yellow: #f1c40f;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --max-width: 1080px;
  --content-width: 720px;
  --nav-height: 64px;
  --font-display: "Bungee", "Bungee Inline", system-ui, sans-serif;
  --font-body: "Roboto", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.05;
  margin: 0 0 0.4em;
  color: var(--color-ink);
}

p {
  margin: 0 0 1em;
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--color-surface);
  border-bottom: 3px solid var(--color-line);
}

.site-nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-nav__brand {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--color-ink);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.site-nav__brand-mark {
  display: inline-flex;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--color-ink);
  position: relative;
  overflow: hidden;
  flex: 0 0 auto;
}

.site-nav__brand-mark::before,
.site-nav__brand-mark::after,
.site-nav__brand-mark span {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  top: 8px;
}

.site-nav__brand-mark::before {
  left: 1px;
  background: var(--color-red);
}

.site-nav__brand-mark::after {
  left: 8px;
  background: var(--color-blue);
}

.site-nav__brand-mark span {
  left: 15px;
  background: var(--color-yellow);
}

.site-nav__links {
  display: flex;
  gap: 4px;
  align-items: center;
}

.site-nav__link {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  transition: color 0.15s ease, background-color 0.15s ease;
}

.site-nav__link:hover {
  color: var(--color-ink);
  background: #ececec;
}

.site-nav__toggle {
  display: none;
  background: transparent;
  border: 2px solid var(--color-ink);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.site-nav__toggle-bar,
.site-nav__toggle-bar::before,
.site-nav__toggle-bar::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-ink);
  position: relative;
  transition: transform 0.2s ease, top 0.2s ease, opacity 0.2s ease;
}

.site-nav__toggle-bar::before,
.site-nav__toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
}

.site-nav__toggle-bar::before {
  top: -6px;
}

.site-nav__toggle-bar::after {
  top: 6px;
}

.site-nav.is-open .site-nav__toggle-bar {
  background: transparent;
}

.site-nav.is-open .site-nav__toggle-bar::before {
  top: 0;
  transform: rotate(45deg);
}

.site-nav.is-open .site-nav__toggle-bar::after {
  top: 0;
  transform: rotate(-45deg);
}

main {
  padding-top: var(--nav-height);
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 28px;
}

.section--narrow {
  max-width: 880px;
}

.kicker {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ink);
  background: var(--color-yellow);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.hero {
  padding: 120px 28px 8px;
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero__content {
  min-width: 0;
}

.hero__media {
  min-width: 0;
  display: flex;
  justify-content: center;
}

.video__media--hero {
  width: 100%;
  max-width: 360px;
  box-shadow: 10px 10px 0 0 var(--color-ink);
}

.hero__title {
  font-size: clamp(48px, 8vw, 96px);
  margin: 0 0 24px;
  letter-spacing: 0.005em;
  line-height: 0.95;
}

.hero__title-accent {
  display: inline-block;
  background: var(--color-ink);
  color: var(--color-bg);
  padding: 0 14px 6px;
  border-radius: 8px;
  transform: rotate(-1.5deg);
}

.hero__lede {
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.5;
  color: var(--color-ink-soft);
  max-width: 720px;
  margin: 0 0 40px;
  font-weight: 400;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.tag {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 8px 14px;
  border: 2px solid var(--color-ink);
  border-radius: 999px;
  background: var(--color-surface);
}

.tag--red {
  background: var(--color-red);
  color: #fff;
  border-color: var(--color-red);
}

.tag--blue {
  background: var(--color-blue);
  color: #fff;
  border-color: var(--color-blue);
}

.tag--yellow {
  background: var(--color-yellow);
  color: var(--color-ink);
  border-color: var(--color-yellow);
}

.hero__actions {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 16px 28px 24px;
  margin-top: 16px;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.03em;
  background: var(--color-ink);
  color: var(--color-bg);
  padding: 16px 26px;
  border-radius: 999px;
  border: 3px solid var(--color-ink);
  transition: transform 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}

.hero__cta:hover {
  background: var(--color-bg);
  color: var(--color-ink);
  transform: translateY(-2px);
}

.hero__cta-arrow {
  display: inline-block;
  transition: transform 0.18s ease;
}

.hero__cta:hover .hero__cta-arrow {
  transform: translateX(4px);
}

.section-title {
  font-size: clamp(36px, 5vw, 56px);
  margin: 0 0 16px;
}

.section-subtitle {
  font-size: 20px;
  line-height: 1.5;
  color: var(--color-ink-soft);
  max-width: 640px;
  margin: 0 0 56px;
}

.overview {
  /* display: grid;
  grid-template-columns: 1.1fr 1fr; */
  gap: 56px;
  align-items: start;
}

.overview__lead {
  font-size: 22px;
  line-height: 1.55;
  color: var(--color-ink);
  font-weight: 400;
  margin: 0;
}

.overview__body p {
  color: var(--color-ink-soft);
  font-size: 17px;
  line-height: 1.7;
}

.overview__body p strong {
  color: var(--color-ink);
  font-weight: 700;
}

.mechanics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 32px;
  margin-bottom: 16px;
}

.mechanic {
  background: var(--color-surface);
  border: 2px solid var(--color-ink);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
}

.mechanic::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 8px;
  height: 100%;
  background: var(--mechanic-color, var(--color-ink));
}

.mechanic--red {
  --mechanic-color: var(--color-red);
}

.mechanic--blue {
  --mechanic-color: var(--color-blue);
}

.mechanic--yellow {
  --mechanic-color: var(--color-yellow);
}

.mechanic__num {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--mechanic-color);
  margin-bottom: 12px;
  display: block;
}

.mechanic__title {
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.15;
  margin: 0 0 10px;
  color: var(--color-ink);
}

.mechanic__body {
  color: var(--color-ink-soft);
  font-size: 15px;
  line-height: 1.55;
  margin: 0;
}

.videos-intro {
  text-align: center;
  margin: 0 auto 80px;
  max-width: 720px;
}

.videos-intro .kicker {
  margin: 0 auto 24px;
}

.videos-intro .section-title {
  font-size: clamp(44px, 7vw, 80px);
  line-height: 0.95;
  margin: 0 0 16px;
}

.videos-intro .section-subtitle {
  margin: 0 auto;
}

.video {
  display: grid;
  grid-template-columns: minmax(260px, 380px) 1fr;
  gap: 64px;
  align-items: center;
  padding: 56px 0;
  border-top: 2px solid var(--color-ink);
}

.video:first-of-type {
  border-top: none;
  padding-top: 0;
}

.video:nth-child(even) {
  grid-template-columns: 1fr minmax(260px, 380px);
}

.video:nth-child(even) .video__media {
  order: 2;
}

.video__media {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #111;
  aspect-ratio: 9 / 16;
  border: 3px solid var(--color-ink);
  box-shadow: 8px 8px 0 0 var(--color-ink);
}

.video__media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video__num {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.video__num::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 2px;
  background: var(--color-ink);
}

.video__title {
  font-size: clamp(34px, 4.5vw, 48px);
  margin: 0 0 20px;
  line-height: 1;
}

.video__blurb {
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-ink-soft);
  margin: 0 0 24px;
}

.video__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.video__chip {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: 6px;
  background: #ececec;
  color: var(--color-ink-soft);
}

.cta-band {
  background: var(--color-ink);
  color: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  margin: 96px auto 0;
  max-width: var(--max-width);
}

.cta-band__title {
  color: var(--color-bg);
  font-size: clamp(32px, 4vw, 44px);
  margin: 0 0 16px;
}

.cta-band__body {
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
  line-height: 1.55;
  max-width: 560px;
  margin: 0 auto 32px;
}

.cta-band__button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.04em;
  background: var(--color-bg);
  color: var(--color-ink);
  padding: 14px 24px;
  border-radius: 999px;
  border: 3px solid var(--color-bg);
  transition: transform 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}

.cta-band__button:hover {
  background: var(--color-yellow);
  border-color: var(--color-yellow);
  transform: translateY(-2px);
}

.site-footer {
  border-top: 3px solid var(--color-ink);
  background: var(--color-surface);
  padding: 48px 28px 64px;
  margin-top: 16px;
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
}

.site-footer__brand {
  font-family: var(--font-display);
  font-size: 22px;
  margin: 0 0 8px;
}

.site-footer__copy {
  color: var(--color-ink-soft);
  font-size: 14px;
  margin: 0;
}

.site-footer__links {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--color-ink-soft);
}

.site-footer__links a {
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.site-footer__links a:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-ink);
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 80px;
  }

  .video__media--hero {
    max-width: 300px;
  }

  .overview {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .mechanics {
    grid-template-columns: 1fr;
  }

  .video,
  .video:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .video:nth-child(even) .video__media {
    order: 0;
  }

  .video__media {
    max-width: 320px;
    margin: 0 auto;
  }

  .site-nav__toggle {
    display: inline-flex;
  }

  .site-nav__links {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 20px;
    border-bottom: 3px solid var(--color-ink);
    gap: 0;
    display: none;
  }

  .site-nav.is-open .site-nav__links {
    display: flex;
  }

  .site-nav__link {
    padding: 14px 12px;
    border-radius: 0;
    border-bottom: 1px solid #ececec;
  }

  .site-nav__link:last-child {
    border-bottom: none;
  }

  .cta-band {
    padding: 48px 24px;
  }
}

@media (max-width: 520px) {
  .hero {
    padding: 80px 24px 48px;
  }

  .section {
    padding: 64px 24px;
  }

  .video__media {
    max-width: 260px;
  }
}