:root {
  --video-bg: #020b18;
  --video-surface: #071527;
  --video-paper: #f5f5f7;
  --video-ink: #101318;
  --video-muted: #6e7480;
  --video-blue: #0a84ff;
  --video-focus: rgba(10, 132, 255, .72);
  --video-line: rgba(255, 255, 255, .12);
  --video-page: min(1120px, calc(100vw - 48px));
}

.video-site {
  margin: 0;
  color: var(--video-ink);
  background: var(--video-paper);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Noto Sans SC Variable", sans-serif;
  font-optical-sizing: auto;
}

.video-site main { width: 100%; margin: 0; }
.video-site .site-head { background: rgba(2, 11, 24, .74); }
.video-site .site-head .brand b { color: var(--video-blue); }
.video-site .header-cta { background: var(--video-blue); }
.video-site img { display: block; max-width: 100%; }
.video-site h1,
.video-site h2,
.video-site h3 { text-wrap: balance; }

.video-hub-hero {
  min-height: 530px;
  display: grid;
  align-items: end;
  background:
    radial-gradient(circle at 76% 28%, rgba(10, 132, 255, .2), transparent 34%),
    radial-gradient(circle at 12% 96%, rgba(130, 197, 255, .26), transparent 38%),
    linear-gradient(145deg, #fbfdff 8%, #eef5fc 58%, #e7f1fc);
  border-bottom: 1px solid rgba(16, 19, 24, .08);
}

.video-hub-hero > div,
.video-index,
.video-detail main > article,
.video-related {
  width: var(--video-page);
  margin: 0 auto;
}

.video-hub-hero > div { padding: 120px 0 78px; }
.video-eyebrow,
.video-section-index {
  margin: 0 0 20px;
  color: #58a6ff;
  font-size: 11px;
  font-weight: 760;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.video-hub-hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--video-ink);
  font-size: clamp(48px, 6vw, 76px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -.052em;
}

.video-hub-hero p:last-child {
  max-width: 700px;
  margin: 28px 0 0;
  color: #545b66;
  font-size: 16px;
  line-height: 1.85;
}

.video-index {
  padding: 92px 0 110px;
  background: var(--video-paper);
}
.video-section-heading {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  align-items: baseline;
  margin-bottom: 38px;
}
.video-section-heading > span {
  color: #58a6ff;
  font: 700 11px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .12em;
}
.video-section-heading h2 {
  margin: 0;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.05;
  letter-spacing: -.05em;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.video-card {
  overflow: hidden;
  border: 1px solid rgba(16, 19, 24, .1);
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 22px 58px rgba(27, 44, 66, .1);
  will-change: transform;
  transition: transform .32s cubic-bezier(.22,1,.36,1), border-color .2s ease, box-shadow .24s ease;
}
.video-card:hover {
  transform: translateY(-5px);
  border-color: rgba(88,166,255,.42);
  box-shadow: 0 28px 66px rgba(27, 44, 66, .14);
}
.video-card:active { transform: translateY(-1px) scale(.985); }
.video-card:focus-visible {
  outline: 3px solid var(--video-focus);
  outline-offset: 4px;
}
.video-card-art {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #071527;
}
.video-card-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s cubic-bezier(.22,1,.36,1);
}
.video-card:hover .video-card-art img { transform: scale(1.025); }
.video-card-duration {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 6px 9px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 999px;
  color: white;
  background: rgba(2,11,24,.72);
  backdrop-filter: blur(14px);
  font: 650 11px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}
.video-card-play {
  position: absolute;
  left: 16px;
  bottom: 14px;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  padding-left: 2px;
  border-radius: 50%;
  color: white;
  background: var(--video-blue);
  box-shadow: 0 12px 30px rgba(10,132,255,.3);
}
.video-card-copy { padding: 24px 24px 27px; }
.video-card-copy p {
  margin: 0 0 30px;
  color: #777e89;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .12em;
}
.video-card-copy h2 {
  min-height: 2.5em;
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: -.035em;
}
.video-card-copy > span {
  display: inline-flex;
  gap: 8px;
  margin-top: 28px;
  color: #58a6ff;
  font-size: 14px;
  font-weight: 650;
}
.video-card-copy i { font-style: normal; transition: transform .2s ease; }
.video-card:hover .video-card-copy i { transform: translateX(4px); }

.video-detail { background: var(--video-paper); color: var(--video-ink); }
.video-detail .site-head { color: white; }
.video-detail main > article { padding: 76px 0 0; }
.video-detail-hero {
  display: grid;
  grid-template-columns: 1fr minmax(340px, 430px);
  gap: 86px;
  align-items: center;
  padding: 58px 0 94px;
}
.video-detail-copy { align-self: center; }
.video-back {
  display: inline-block;
  margin-bottom: 76px;
  color: var(--video-muted);
  font-size: 13px;
  font-weight: 580;
}
.video-detail-copy h1 {
  max-width: 600px;
  margin: 0;
  font-size: clamp(44px, 5.2vw, 70px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -.052em;
}
.video-detail-copy > p:not(.video-eyebrow) {
  max-width: 650px;
  margin: 28px 0 0;
  color: var(--video-muted);
  font-size: 16px;
  line-height: 1.85;
}
.video-detail-copy dl {
  display: flex;
  gap: 44px;
  margin: 46px 0 0;
}
.video-detail-copy dl div { display: grid; gap: 8px; }
.video-detail-copy dt {
  color: var(--video-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.video-detail-copy dd {
  margin: 0;
  font: 620 13px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.video-player {
  position: relative;
  overflow: hidden;
  aspect-ratio: 9 / 16;
  border: 1px solid rgba(16,19,24,.12);
  border-radius: 36px;
  background: var(--video-bg);
  box-shadow: 0 34px 90px rgba(7,21,39,.2);
}
.video-player video,
.video-player iframe,
.video-player button,
.video-player button img {
  width: 100%;
  height: 100%;
}
.video-player video { display: block; object-fit: contain; }
.video-player iframe { border: 0; }
.video-player button {
  position: relative;
  display: block;
  padding: 0;
  border: 0;
  background: var(--video-bg);
  cursor: pointer;
  touch-action: manipulation;
}
.video-player button img { object-fit: cover; }
.video-player button > span {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: 74px;
  height: 74px;
  padding-left: 4px;
  border-radius: 50%;
  color: white;
  background: var(--video-blue);
  box-shadow: 0 20px 55px rgba(0,0,0,.36);
  transform: translate(-50%, -50%);
  transition: transform .16s ease, background-color .16s ease;
}
.video-player button:hover > span { background: #0077ed; transform: translate(-50%, -50%) scale(1.05); }
.video-player button:active > span { transform: translate(-50%, -50%) scale(.94); }
.video-player button:focus-visible {
  outline: 3px solid var(--video-focus);
  outline-offset: -8px;
}

.video-explanation {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 64px;
  align-items: end;
  padding: 92px 0;
  border-top: 1px solid rgba(16,19,24,.14);
}
.video-explanation h2 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(34px, 4.5vw, 58px);
  line-height: 1.08;
  letter-spacing: -.052em;
}
.video-action-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}
.video-primary-action {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 15px 20px;
  border-radius: 999px;
  color: white;
  background: var(--video-blue);
  font-size: 14px;
  font-weight: 650;
  box-shadow: 0 10px 24px rgba(10, 132, 255, .2);
  transition: transform 100ms ease-out, background-color .16s ease, box-shadow .16s ease;
}
.video-primary-action:hover { background: #0077ed; box-shadow: 0 14px 30px rgba(10, 132, 255, .28); }
.video-primary-action:active { transform: scale(.97); }
.video-primary-action:focus-visible,
.video-back:focus-visible,
.video-action-row > a:last-child:focus-visible {
  outline: 3px solid var(--video-focus);
  outline-offset: 4px;
  border-radius: 8px;
}
.video-action-row > a:last-child {
  color: #0066cc;
  font-size: 13px;
  font-weight: 600;
  transition: color .16s ease, transform 100ms ease-out;
}
.video-action-row > a:last-child:hover { color: #0077ed; }
.video-action-row > a:last-child:active { transform: scale(.97); }

.video-steps {
  padding: 92px 0;
  border-top: 1px solid rgba(16,19,24,.14);
}
.video-steps .video-section-heading h2 { color: var(--video-ink); }
.video-steps ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--video-ink);
  list-style: none;
}
.video-steps li {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 18px;
  min-height: 190px;
  padding: 30px 28px 30px 0;
  border-bottom: 1px solid rgba(16,19,24,.14);
}
.video-steps li:nth-child(odd) { border-right: 1px solid rgba(16,19,24,.14); }
.video-steps li:nth-child(even) { padding-left: 28px; }
.video-steps li > span {
  color: #0066cc;
  font: 700 11px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}
.video-steps h3 { margin: 0 0 13px; font-size: 20px; letter-spacing: -.025em; }
.video-steps p { margin: 0; color: var(--video-muted); font-size: 14px; line-height: 1.8; }

.video-note {
  margin-bottom: 96px;
  padding: 32px 36px;
  border-radius: 24px;
  background: #e8e9ed;
}
.video-note strong { color: #0066cc; font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.video-note p { max-width: 900px; margin: 13px 0 0; color: #575d67; font-size: 13px; line-height: 1.8; }

.video-related {
  padding: 94px 0 110px;
  color: var(--video-ink);
  background: #eef4fb;
}
.video-related .video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

@media (max-width: 900px) {
  .video-grid { grid-template-columns: 1fr; }
  .video-detail-hero { grid-template-columns: 1fr; gap: 52px; }
  .video-player { width: min(100%, 430px); margin: 0 auto; }
  .video-back { margin-bottom: 46px; }
  .video-explanation { grid-template-columns: 1fr; align-items: start; }
  .video-related .video-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --video-page: calc(100vw - 32px); }
  .video-hub-hero { min-height: 470px; }
  .video-hub-hero > div { padding: 98px 0 58px; }
  .video-hub-hero h1 { font-size: 46px; }
  .video-index { padding: 68px 0 82px; }
  .video-section-heading { grid-template-columns: 42px 1fr; gap: 12px; }
  .video-detail main > article { padding-top: 44px; }
  .video-detail-hero { padding: 36px 0 70px; }
  .video-detail-copy h1 { font-size: 44px; }
  .video-detail-copy dl { gap: 28px; }
  .video-explanation,
  .video-steps { padding: 70px 0; }
  .video-steps ol { grid-template-columns: 1fr; }
  .video-steps li,
  .video-steps li:nth-child(even) { padding: 25px 0; border-right: 0; }
  .video-note { margin-bottom: 72px; padding: 26px 24px; }
  .video-related { padding: 72px 0 84px; }
}

@media (prefers-reduced-motion: reduce) {
  .video-card,
  .video-card-art img,
  .video-card-copy i,
  .video-player button > span,
  .video-primary-action,
  .video-action-row > a:last-child { transition-duration: .01ms !important; }
  .video-card:active,
  .video-primary-action:active,
  .video-action-row > a:last-child:active,
  .video-player button:active > span { transform: none; }
}

@media (prefers-reduced-transparency: reduce) {
  .video-card-duration {
    background: #020b18;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

@media (prefers-contrast: more) {
  .video-card,
  .video-player { border-color: rgba(16, 19, 24, .42); }
  .video-card-copy p,
  .video-hub-hero p:last-child { color: #3e4550; }
}