/* Vivid HDR. A dark theater, so nothing around the video competes with its
   highlights. The page's own colors stay well below them on purpose. */
html:has(.hv), html:has(.hv) body { background: #07090c; }

.hv {
  --hv-bg: #07090c;
  --hv-panel: #10141a;
  --hv-line: #252b33;
  --hv-text: #e9edef;
  --hv-muted: #98a2ab;
  --hv-accent: #5fdce6;
  --hv-warm: #ff9a52;
  background: var(--hv-bg);
  color: var(--hv-text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  min-height: 100svh;
}
.hv * { box-sizing: border-box; }
.hv a { color: var(--hv-accent); text-underline-offset: 3px; }
.hv a:hover { color: #a5eef3; }
.hv button { font: inherit; cursor: pointer; }
.hv :focus-visible { outline: 2px solid var(--hv-warm); outline-offset: 3px; }

/* The theater */
.hv-stage { background: #000; }
.hv-screen { display: block; width: 100%; height: min(calc(100svh - 240px), 56.25vw); min-height: 240px; object-fit: contain; background: #000; }

.hv-player { max-width: 1400px; margin: 0 auto; padding: 18px 32px 0; }
.hv-now { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 10px 32px; }
.hv .hv-scene { font-size: 22px; font-weight: 600; line-height: 1.25; letter-spacing: -.01em; margin: 0; }
.hv-scene-note { color: var(--hv-muted); font-size: 15px; margin: 2px 0 0; }
.hv-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 20px; }

.hv-toggle { display: inline-flex; padding: 3px; background: var(--hv-panel); border: 1px solid var(--hv-line); border-radius: 8px; }
.hv-toggle button { min-width: 62px; padding: 6px 14px; border: 0; border-radius: 5px; background: transparent; color: var(--hv-muted); font-size: 14px; font-weight: 600; letter-spacing: .03em; }
.hv-toggle button:hover { color: var(--hv-text); }
.hv-toggle button[aria-pressed="true"] { background: var(--hv-text); color: var(--hv-bg); }
.hv-downloads { color: var(--hv-muted); font-size: 14px; }
.hv-downloads a { margin-left: 6px; }

.hv-status { color: var(--hv-muted); font-size: 14px; min-height: 22px; margin: 8px 0 0; }

/* The filmstrip */
.hv-strip { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 10px; list-style: none; margin: 14px 0 0; padding: 0; }
.hv-card { display: block; width: 100%; padding: 0; border: 0; background: none; color: var(--hv-muted); text-align: left; }
.hv-card img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 6px; opacity: .72; outline: 2px solid transparent; outline-offset: 2px; transition: opacity .15s, outline-color .15s; }
.hv-card span { display: block; padding: 7px 2px 0; font-size: 13px; line-height: 1.3; }
.hv-card:hover img { opacity: 1; }
.hv-card:hover { color: var(--hv-text); }
.hv-card[aria-pressed="true"] { color: var(--hv-text); }
.hv-card[aria-pressed="true"] img { opacity: 1; outline-color: var(--hv-accent); }

/* The guide */
.hv-wrap { max-width: 1120px; margin: 0 auto; padding: 72px 32px 56px; }
.hv-intro { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; align-items: start; padding-bottom: 64px; }
.hv .hv-brand { color: var(--hv-muted); font-size: 14px; text-decoration: none; }
.hv .hv-brand:hover { color: var(--hv-text); }
.hv h1 { font-size: clamp(52px, 7vw, 88px); font-weight: 700; line-height: 1; letter-spacing: -.035em; margin: 10px 0 0; }
.hv-lead { font-size: 21px; line-height: 1.5; margin: 0 0 18px; }
.hv-credit { color: var(--hv-muted); font-size: 16px; margin: 0 0 22px; }
.hv .hv-jump { display: inline-block; padding: 10px 18px; border-radius: 8px; background: var(--hv-accent); color: #04191c; font-size: 15px; font-weight: 600; text-decoration: none; }
.hv .hv-jump:hover { background: #8ceaf0; color: #04191c; }

.hv-section { border-top: 1px solid var(--hv-line); padding: 52px 0; }
.hv-section h2 { font-size: clamp(27px, 3.4vw, 36px); font-weight: 650; line-height: 1.15; letter-spacing: -.02em; margin: 0 0 28px; }
.hv-section h3 { font-size: 18px; font-weight: 600; line-height: 1.3; margin: 0 0 8px; }
.hv-section p { margin: 0 0 14px; }

.hv-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; list-style: none; counter-reset: hv-step; margin: 0; padding: 0; }
.hv-steps li { counter-increment: hv-step; }
.hv-steps li::before { content: counter(hv-step); display: block; color: var(--hv-warm); font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; margin-bottom: 8px; }
.hv-steps p { color: #c3cbd1; font-size: 16px; margin: 0; }
.hv .hv-note + .hv-note { margin-top: 12px; }
.hv .hv-note { margin: 36px 0 0; padding: 18px 22px; background: var(--hv-panel); border-radius: 8px; font-size: 16px; }

.hv-columns { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; }
.hv-columns h2 { margin-bottom: 0; }
.hv-columns > div > p { color: #c3cbd1; }
.hv-columns > div > h2 { margin-bottom: 16px; }
.hv-list { list-style: none; margin: 0; padding: 0; }
.hv-list li { padding: 12px 0; border-top: 1px solid var(--hv-line); font-size: 16px; color: #c3cbd1; }
.hv-list li:first-child { border-top: 0; padding-top: 0; }
.hv-list strong { color: var(--hv-text); font-weight: 600; }
.hv-numbered { counter-reset: hv-item; max-width: 820px; }
.hv-numbered li { counter-increment: hv-item; padding-left: 34px; position: relative; }
.hv-numbered li::before { content: counter(hv-item); position: absolute; left: 0; color: var(--hv-warm); font-weight: 600; font-variant-numeric: tabular-nums; }

.hv-prompt { margin-top: 12px; padding: 20px; background: var(--hv-panel); border: 1px solid var(--hv-line); border-radius: 10px; }
.hv-prompt label { display: block; color: var(--hv-muted); font-size: 14px; margin-bottom: 10px; }
.hv textarea { display: block; width: 100%; height: 300px; resize: vertical; padding: 16px; background: var(--hv-bg); color: #cfd8dc; border: 1px solid var(--hv-line); border-radius: 6px; font: 13px/1.65 ui-monospace, SFMono-Regular, Menlo, monospace; }
.hv-prompt-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 20px; margin-top: 14px; font-size: 15px; }
.hv .hv-primary { padding: 10px 18px; border: 0; border-radius: 8px; background: var(--hv-accent); color: #04191c; font-size: 15px; font-weight: 600; }
.hv .hv-primary:hover { background: #8ceaf0; }
.hv .hv-try { margin-top: 32px; }
.hv .hv-example { color: #c3cbd1; font-size: 16px; padding-left: 16px; border-left: 2px solid var(--hv-line); max-width: 820px; margin: 0; }

.hv-faq { margin-top: 36px; max-width: 820px; }
.hv-faq details { border-top: 1px solid var(--hv-line); padding: 14px 0; }
.hv-faq details:last-child { border-bottom: 1px solid var(--hv-line); }
.hv-faq summary { cursor: pointer; font-weight: 600; }
.hv-faq p { color: #c3cbd1; font-size: 16px; margin: 10px 0 2px; }

.hv-footer { border-top: 1px solid var(--hv-line); padding-top: 24px; color: var(--hv-muted); font-size: 14px; }
.hv-footer p { margin: 0 0 6px; }

@media (max-width: 1000px) {
  .hv-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .hv-intro, .hv-columns { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .hv-steps { grid-template-columns: minmax(0, 1fr); gap: 24px; }
}
@media (max-width: 640px) {
  .hv-screen { height: 56.25vw; min-height: 0; }
  .hv-player { padding: 14px 16px 0; }
  .hv-wrap { padding: 48px 16px 40px; }
  .hv-intro { padding-bottom: 44px; }
  .hv-section { padding: 40px 0; }
  .hv-strip { display: flex; gap: 8px; margin: 12px -16px 0; padding: 2px 16px 6px; overflow-x: auto; scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch; }
  .hv-strip li { flex: 0 0 38vw; scroll-snap-align: center; }
  .hv-lead { font-size: 19px; }
  .hv textarea { height: 240px; }
}
@media (prefers-reduced-motion: reduce) {
  .hv-card img { transition: none; }
}