/* Chapter films replace individual concept motions; copy and all risk disclosures remain visible. */
#intro, .closing-section { overflow-x: clip; }
@media (min-width: 761px) { .intro-copy h2 { font-size: clamp(58px, 5.42vw, 78px); } }
.intro .intro-copy { transition: opacity .65s ease, transform .65s ease; }
.intro .intro-shade { transition: opacity .65s ease; }
.intro.is-logo-finale .intro-copy { opacity: 0; transform: translateY(16px); pointer-events: none; }
.intro.is-logo-finale .intro-shade { opacity: .38; }
.intro.is-finale-hold .intro-countdown { opacity: 0; pointer-events: none; }
.intro.is-finale-hold #intro-sound { display: none; }
.intro-controls #intro-sound, .intro-controls .skip-intro { border-radius: 100px; transition: background .25s ease, border-color .25s ease, transform .25s ease, box-shadow .25s ease; }
.intro-controls #intro-sound { min-width: 157px; display: inline-flex; justify-content: center; align-items: center; gap: 9px; border-color: rgba(220,255,229,.33); background: rgba(6,20,15,.66); backdrop-filter: blur(12px); }
.intro-controls #intro-sound span { font-size: 11px; font-weight: 700; white-space: nowrap; }
.intro-controls #intro-sound small { font-size: 9px; font-weight: 400; opacity: .72; white-space: nowrap; }
.intro-controls #intro-sound[aria-pressed="true"] { color: #dceadf; }
.intro.sound-needs-gesture #intro-sound { border-color: rgba(185,255,57,.82); background: rgba(185,255,57,.96); color: #0c1b12; box-shadow: 0 10px 34px rgba(185,255,57,.2); }
.intro.sound-needs-gesture #intro-sound::after { content: '↗'; font-size: 14px; line-height: 1; }
.intro-controls .skip-intro { border-color: rgba(220,255,229,.26); background: rgba(6,20,15,.44); color: #e9f5ed; }
.intro-controls #intro-sound:hover, .intro-controls .skip-intro:hover { transform: translateY(-2px); }
.motion-video-shell { position: relative; overflow: hidden; margin: 0; aspect-ratio: 16 / 9; border: 1px solid rgba(182,255,0,.18); border-radius: 16px; background: #07110f; }
.motion-video-shell::after { content: ''; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(180deg, rgba(4,17,14,.16), transparent 35%, rgba(4,17,14,.73)), radial-gradient(ellipse at 50% 45%, transparent 43%, rgba(4,17,14,.25)); }
.motion-video-poster, .motion-chapter-video { display: block; width: 100%; height: 100%; object-fit: cover; }
.motion-chapter-video { position: absolute; inset: 0; opacity: 0; filter: saturate(.87) contrast(1.06) brightness(.92); transition: opacity .55s ease; }
.motion-video-shell.is-ready .motion-chapter-video { opacity: 1; }
.motion-video-caption { position: absolute; z-index: 2; left: clamp(14px, 3.2vw, 30px); right: 22px; bottom: clamp(15px, 2.7vw, 28px); display: flex; flex-direction: column; gap: 5px; max-width: 80%; color: #f1f8f4; text-shadow: 0 2px 14px rgba(0,0,0,.75); pointer-events: none; }
.motion-video-caption span { color: var(--green); font: 10px var(--mono); letter-spacing: .15em; }
.motion-video-caption i { color: var(--cyan); font-style: normal; }
.motion-video-caption b { font-size: clamp(12px, 1.1vw, 17px); font-weight: 600; line-height: 1.45; }
.motion-video-shell.video-unavailable .motion-chapter-video { display: none; }
.motion-video-fill.video-unavailable { display: none; }
.motion-video-replay { position: absolute; right: 16px; bottom: 15px; z-index: 3; padding: 8px 12px; color: #eaffec; border: 1px solid rgba(182,255,0,.55); border-radius: 100px; background: rgba(5,19,15,.78); font: 12px var(--mono); cursor: pointer; }
.motion-video-replay[hidden] { display: none; }
.motion-video-replay:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
.hero-art, .payment-motion, .market-motion, .life-motion { position: relative; overflow: hidden; }
.hero-art > .motion-video-shell, .payment-motion > .motion-video-shell, .market-motion > .motion-video-shell, .life-motion > .motion-video-shell { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; border-radius: inherit; }
.hero-art > .motion-video-shell { z-index: 1; }
.hero-art.has-chapter-video > :not(.motion-video-shell):not(.hero-art-caption),
.payment-motion.has-chapter-video > :not(.motion-video-shell),
.market-motion.has-chapter-video > :not(.motion-video-shell),
.life-motion.has-chapter-video > :not(.motion-video-shell) { display: none !important; }
.hero-art.has-chapter-video .hero-art-caption { display: none; }
.motion-video-insert-before { width: min(100% - 48px, 1080px); margin: 26px auto 32px; box-shadow: 0 24px 80px rgba(0,0,0,.4), 0 0 70px rgba(47,228,208,.06); }
.motion-video-insert-before::before { content: ''; position: absolute; z-index: 2; left: 0; top: 0; width: 31%; height: 2px; background: linear-gradient(90deg, var(--green), var(--cyan), transparent); pointer-events: none; }
.evidence-section > .motion-video-shell { margin-top: 0; }
.network-section > .motion-video-shell, .ecosystem-section > .motion-video-shell { margin-top: 14px; margin-bottom: 34px; }
.ecosystem-section > .motion-video-shell { grid-column: 1 / -1; justify-self: center; width: min(100%, 1080px); }
.architecture-section > .motion-video-shell { margin-top: 15px; margin-bottom: 38px; }
@media (max-width: 760px) {
  .intro #intro-video { object-fit: contain; background: transparent; transform: scale(var(--intro-cover-scale, 3.85)); transition: opacity .5s ease, transform 1.12s cubic-bezier(.16,1,.3,1); }
  .intro.is-logo-finale #intro-video { transform: scale(1); }
  .intro-controls > div { display: flex; width: 100%; }
  .intro-controls #intro-sound, .intro-controls .skip-intro { flex: 1; min-width: 0; width: auto; }
  .intro-controls #intro-sound { gap: 5px; }
  .intro-controls #intro-sound span { font-size: 10px; }
  .intro-controls #intro-sound small { font-size: 8px; }
  .motion-video-insert-before { width: calc(100% - 32px); margin: 18px auto 28px; border-radius: 12px; }
  .motion-video-replay { right: 10px; bottom: 10px; font-size: 11px; }
  .motion-video-caption { left: 13px; right: 12px; bottom: 12px; max-width: 78%; gap: 2px; }
  .motion-video-caption span { font-size: 8px; letter-spacing: .08em; }
  .motion-video-caption b { font-size: 11px; line-height: 1.3; }
  .payment-motion .motion-video-caption, .market-motion .motion-video-caption, .life-motion .motion-video-caption { bottom: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  .motion-chapter-video { display: none !important; }
  .motion-video-shell { box-shadow: none; }
  .intro #intro-video { transition: none !important; }
}