.origins { overflow-x: hidden; }
.site-header--transparent { position: fixed; top: 0; left: 0; right: 0; background: transparent; border-bottom-color: transparent; transition: background var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out); }
.site-header--transparent.is-scrolled { background: rgba(20, 21, 29, 0.85); backdrop-filter: blur(var(--blur-sm)); border-bottom-color: var(--lumi-border); }
[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out); }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
[data-reveal-delay="1"] { transition-delay: 0.1s; }
[data-reveal-delay="2"] { transition-delay: 0.2s; }
[data-reveal-delay="3"] { transition-delay: 0.3s; }
[data-reveal-delay="4"] { transition-delay: 0.4s; }
.origins-hero { position: relative; min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: var(--space-6); overflow: hidden; }
.origins-hero__glow { position: absolute; inset: -30%; background: radial-gradient(circle at 30% 30%, rgba(79,95,232,0.22), transparent 55%), radial-gradient(circle at 70% 65%, rgba(181,131,224,0.16), transparent 55%); background-size: 200% 200%; animation: lumi-gradient-drift var(--duration-ambient, 8s) var(--ease-in-out) infinite; z-index: 0; }
.origins-kicker { position: relative; z-index: 1; font-family: var(--font-mono); font-size: var(--text-sm); color: var(--lumi-cyan); letter-spacing: 0.16em; text-transform: uppercase; margin: 0 0 var(--space-6); }
.origins-hero__title { position: relative; z-index: 1; font-size: var(--text-6xl); line-height: 1.05; letter-spacing: -0.03em; max-width: 900px; margin: 0 0 var(--space-6); }
.origins-hero__sub { position: relative; z-index: 1; font-size: var(--text-lg); color: var(--lumi-text-secondary); max-width: 520px; }
.origins-hero__scroll { position: absolute; bottom: var(--space-10); left: 50%; transform: translateX(-50%); width: 22px; height: 36px; border: 1px solid var(--lumi-border-strong); border-radius: var(--radius-full); z-index: 1; }
.origins-hero__scroll span { display: block; width: 4px; height: 8px; margin: 6px auto 0; background: var(--lumi-cyan); border-radius: var(--radius-full); animation: origins-scroll-cue 1.8s var(--ease-in-out) infinite; }
@keyframes origins-scroll-cue { 0% { transform: translateY(0); opacity: 1; } 60% { transform: translateY(12px); opacity: 0; } 61% { transform: translateY(0); opacity: 0; } 100% { transform: translateY(0); opacity: 1; } }
.chapter { position: relative; padding: var(--space-20) var(--space-6); border-top: 1px solid var(--lumi-divider); }
.chapter--alt { background: var(--lumi-surface-1); }
.chapter__inner { position: relative; max-width: 720px; margin: 0 auto; }
.chapter__inner--wide { max-width: 960px; }
.chapter__number { font-family: var(--font-display); font-weight: var(--weight-bold); font-size: var(--text-6xl); color: var(--lumi-text-primary); opacity: 0.06; line-height: 1; margin: 0 0 calc(-1 * var(--space-8)); position: absolute; top: -20px; left: -20px; z-index: 0; transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out); }
.chapter__kicker { position: relative; z-index: 1; font-family: var(--font-mono); font-size: var(--text-sm); color: var(--lumi-cyan); letter-spacing: 0.08em; margin: var(--space-8) 0 var(--space-6); }
.chapter__body { position: relative; z-index: 1; font-size: var(--text-xl); line-height: var(--leading-relaxed); color: var(--lumi-text-secondary); margin: 0 0 var(--space-4); }
.chapter__body--emphasis { color: var(--lumi-text-primary); font-family: var(--font-display); font-size: var(--text-2xl); font-weight: var(--weight-medium); }
.build-grid { position: relative; margin-top: var(--space-12); display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-4); }
.build-node { background: var(--lumi-surface-2); border: 1px solid var(--lumi-border); border-radius: var(--radius-lg); padding: var(--space-5) var(--space-3); text-align: center; box-shadow: var(--shadow-sm); }
.build-node--2, .build-node--4 { margin-top: var(--space-6); }
.build-node__label { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--lumi-text-tertiary); letter-spacing: 0.04em; }
.chapter--ecosystem { padding-bottom: 0; }
.ecosystem { position: relative; max-width: 640px; margin: var(--space-16) auto 0; padding-bottom: var(--space-20); }
.ecosystem__lines { position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 2px; height: 100%; overflow: visible; }
.ecosystem__line { stroke: url(#origins-line-gradient); stroke-width: 2; }
.ecosystem__node { position: relative; display: flex; align-items: flex-start; gap: var(--space-6); padding: var(--space-8) 0; }
.ecosystem__dot { flex-shrink: 0; width: 14px; height: 14px; margin-top: 6px; border-radius: var(--radius-full); background: var(--lumi-primary); box-shadow: 0 0 0 4px var(--lumi-bg), 0 0 24px 2px rgba(79,95,232,0.6); position: relative; z-index: 1; }
.ecosystem__dot--future { background: var(--lumi-violet); box-shadow: 0 0 0 4px var(--lumi-bg), 0 0 24px 2px rgba(181,131,224,0.6); }
.ecosystem__card h3 { font-size: var(--text-xl); margin-bottom: var(--space-2); }
.ecosystem__card p { color: var(--lumi-text-secondary); font-size: var(--text-sm); margin: 0; max-width: 420px; }
.ecosystem__card--future h3 { color: var(--lumi-violet); }
.chapter--final { text-align: center; padding-bottom: var(--space-20); }
.chapter--final .chapter__kicker { font-family: var(--font-display); font-size: var(--text-4xl); color: var(--lumi-text-primary); letter-spacing: -0.02em; text-transform: none; margin-bottom: var(--space-10); }
.signature { margin-bottom: var(--space-8); }
.signature__name { font-size: var(--text-2xl); font-family: var(--font-display); margin: 0; }
.signature__role { font-size: var(--text-sm); color: var(--lumi-text-tertiary); margin: var(--space-1) 0 0; }
.origins-quote { font-family: var(--font-mono); font-size: var(--text-lg); color: var(--lumi-text-secondary); max-width: 560px; margin: 0 auto; min-height: 2.4em; }
.origins-quote::after { content: ""; display: inline-block; width: 2px; height: 1em; vertical-align: -0.15em; background: var(--lumi-cyan); margin-left: 2px; animation: caret-blink 1s step-end infinite; }
@keyframes caret-blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
.origins-cta { padding: var(--space-20) var(--space-6); text-align: center; border-top: 1px solid var(--lumi-divider); background: var(--lumi-surface-1); }
.origins-cta__inner { max-width: 560px; margin: 0 auto; }
.origins-cta__eyebrow { color: var(--lumi-text-tertiary); font-size: var(--text-sm); margin-bottom: var(--space-3); }
.origins-cta__title { font-size: var(--text-3xl); margin-bottom: var(--space-8); letter-spacing: -0.01em; }
.origins-cta__actions { display: flex; gap: var(--space-4); justify-content: center; flex-wrap: wrap; }
@media (max-width: 767px) {
  .origins-hero__title { font-size: var(--text-4xl); }
  .chapter { padding: var(--space-14) var(--space-4); }
  .chapter__body { font-size: var(--text-lg); }
  .build-grid { grid-template-columns: repeat(2, 1fr); }
  .build-node--2, .build-node--4 { margin-top: 0; }
  .ecosystem__node { gap: var(--space-4); }
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .origins-hero__glow { animation: none; }
  .origins-hero__scroll span { animation: none; }
  .origins-quote::after { animation: none; }
}

/* ---------- Ajuste tablet — build-grid não deve espremer em 5 colunas ---------- */
@media (min-width: 768px) and (max-width: 1023px) {
  .build-grid { grid-template-columns: repeat(3, 1fr); }
  .build-node--2, .build-node--4 { margin-top: 0; }
}