/* ============================================================
   B&S Performance Bureau — bsperformance.com.br
   Sistema monocromático · Brand System Archive 01
   Quatro tons. Sem exceção.
   ============================================================ */

:root {
  /* Paleta primária */
  --ink:   #0A0A0A;   /* 60% · tipografia, regra, contorno, superfícies escuras */
  --paper: #ECE8DF;   /* 20% · fundo padrão                                     */
  --stone: #D4CFC2;   /* 15% · cor de pausa                                     */
  --fog:   #8A8578;   /*  5% · metadados (apenas sobre Ink), decorativo         */

  /* Tons de arquivo (Arquivo 03) */
  --ink-2:  #2C2A26;
  --cream:  #F8F5F2;

  /* Hairlines */
  --line-on-paper: rgba(10, 10, 10, 0.22);
  --line-on-ink:   rgba(236, 232, 223, 0.18);

  /* Tipografia */
  --font-display: "Neue Haas Grotesk Display Pro", "neue-haas-grotesk-display",
                  "Helvetica Now Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Movimento */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 700ms;

  /* Camadas */
  --z-hud: 40;
  --z-menu: 45;
  --z-nav: 50;
  --z-boot: 60;

  --gutter: clamp(20px, 4vw, 64px);
  /* Largura da barra de rolagem, medida em JS: 100vw a inclui, 100% não. */
  --sbw: 0px;
  /* Largura real do viewport e sangria de borda a borda sem estourar o eixo X */
  --vw: calc(100vw - var(--sbw));
  --bleed: calc(50% - var(--vw) / 2);
  /* Distância da borda do viewport até o conteúdo do container */
  --edge: max(var(--gutter), calc((var(--vw) - 1360px) / 2));
}

/* ---------- Reset ---------- */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-padding-top: 6rem;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink);
  background: var(--ink); /* moldura escura: a página abre e fecha em silêncio */
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

ul, ol { list-style: none; }

::selection { background: var(--ink); color: var(--paper); }
.s-ink ::selection, .s-ink::selection { background: var(--paper); color: var(--ink); }

:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 0.75rem; left: 0.75rem;
  z-index: calc(var(--z-boot) + 1);
  padding: 0.75em 1.25em;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  transform: translateY(-250%);
}
.skip-link:focus { transform: none; }

/* ---------- Utilitários ---------- */

.container {
  width: min(100% - 2 * var(--gutter), 1360px);
  margin-inline: auto;
}

.mono, .mono-xs, .mono-2xs {
  font-family: var(--font-mono);
  font-weight: 400;
}

.mono-xs {
  font-size: 0.6875rem;
  line-height: 1.6;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mono-2xs {
  font-size: 0.625rem;
  line-height: 1.6;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Superfícies */
.s-ink   { background: var(--ink);   color: var(--paper); }
.s-paper { background: var(--paper); color: var(--ink); }
.s-stone { background: var(--stone); color: var(--ink); }

/* Metadados: Fog passa AA apenas sobre Ink */
.s-ink .mono-xs, .s-ink .mono-2xs { color: var(--fog); }

/* Grão de impressão nas superfícies claras */
.s-paper, .s-stone { position: relative; }
.s-paper::after, .s-stone::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.s-paper > *, .s-stone > * { position: relative; z-index: 1; }

/* Escala de display */
.h-xl {
  font-size: clamp(2.75rem, 7vw, 6rem);
  line-height: 0.95;
  letter-spacing: -0.025em;
  font-weight: 700;
  text-wrap: balance;
}

.h-l {
  font-size: clamp(2rem, 4.6vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-weight: 700;
  text-wrap: balance;
}

.lead {
  font-size: clamp(1.0625rem, 1.5vw, 1.3125rem);
  line-height: 1.5;
  max-width: 58ch;
  text-wrap: pretty;
}

p { max-width: 68ch; text-wrap: pretty; }

.rule-top {
  border-top: 1px solid var(--ink);
  padding-top: 0.875rem;
}
.rule-top--dark { border-top-color: var(--paper); }

/* ---------- Cabeçalho de arquivo (sistema do brand book) ---------- */

.file-head {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line-on-paper);
  margin-bottom: clamp(3rem, 7vh, 5.5rem);
}

.file-head--dark { border-bottom-color: var(--line-on-ink); }

.file-head__num {
  font-size: 1.125rem;
  font-weight: 500;
}

.file-head__label { }

.file-head__meta { margin-left: auto; }

.s-paper .file-head__label,
.s-stone .file-head__label,
.s-paper .file-head__meta,
.s-stone .file-head__meta { color: var(--ink); }

/* ---------- Botões ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 1em 1.6em;
  border: 1px solid transparent;
  transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}

.btn--primary {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}
.btn--primary:hover {
  background: transparent;
  color: var(--paper);
}

.btn--ghost {
  border-color: var(--paper);
  color: var(--paper);
}
.btn--ghost:hover {
  background: var(--paper);
  color: var(--ink);
}

/* ---------- Boot ---------- */

.boot {
  position: fixed;
  inset: 0;
  z-index: var(--z-boot);
  background: var(--ink);
  color: var(--paper);
  display: grid;
  place-items: center;
  transition: transform 900ms var(--ease-out);
}

.boot.is-done { transform: translateY(-100%); }

.boot__inner { width: min(420px, 78vw); }

.boot__mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 3rem;
  letter-spacing: -0.02em;
  margin-bottom: 2.5rem;
}
.boot__mark sup { font-size: 0.875rem; vertical-align: super; }

.boot__row {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fog);
  margin-bottom: 0.75rem;
}
.boot__pct { color: var(--paper); }

.boot__bar {
  height: 2px;
  background: var(--ink-2);
  overflow: hidden;
}
.boot__bar span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--paper);
}

/* ---------- Navegação ---------- */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  gap: 2.5rem;
  padding: 1.1rem var(--gutter);
  mix-blend-mode: difference;
  color: var(--paper);
  transition: transform 600ms var(--ease-out);
}

.nav.is-hidden { transform: translateY(-110%); }

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  text-decoration: none;
}

.nav__logo {
  font-weight: 700;
  font-size: 1.625rem;
  letter-spacing: -0.02em;
  line-height: 1;
}
.nav__logo sup { font-size: 0.5em; vertical-align: super; }

.nav__sub {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  line-height: 1.45;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  gap: 1.75rem;
  margin-left: auto;
}

.nav__links a {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  opacity: 0.75;
  transition: opacity 300ms var(--ease-out);
}
.nav__links a:hover { opacity: 1; }

.nav__end { display: flex; align-items: center; gap: 1rem; }
.nav__links + .nav__end { margin-left: 0; }
.nav:not(:has(.nav__links)) .nav__end { margin-left: auto; }

.btn--nav {
  background: var(--paper);
  color: var(--ink);
  padding: 0.8em 1.3em;
}
.btn--nav:hover { background: var(--stone); }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  line-height: 1;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.lang-switch a {
  text-decoration: none;
  opacity: 0.58;
  transition: opacity 300ms var(--ease-out);
}

.lang-switch a:hover { opacity: 1; }
.lang-switch [aria-current="page"] { font-weight: 600; }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px 2px;
}
.nav__burger span {
  width: 26px;
  height: 2px;
  background: currentColor;
  transition: transform 400ms var(--ease-out);
}
.nav__burger[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:last-child  { transform: translateY(-4px) rotate(-45deg); }

/* Menu mobile */
.menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-menu);
  background: var(--ink);
  color: var(--paper);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--gutter);
  opacity: 0;
  transition: opacity 450ms var(--ease-out);
}

.menu[hidden] { display: none; }
.menu.is-open { opacity: 1; }

.menu__links { display: flex; flex-direction: column; }

.menu__links a {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.55rem 0;
  font-size: clamp(1.75rem, 7.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
  border-bottom: 1px solid var(--line-on-ink);
}

.menu__links a small {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  color: var(--fog);
}

.menu__meta {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fog);
}

.menu__meta .lang-switch { margin-left: auto; }

body.menu-open { overflow: hidden; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: 6.5rem;
  overflow: hidden;
}

.hero__field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__head {
  display: flex;
  justify-content: space-between;
  position: relative;
  z-index: 2;
}

.hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  padding-block: clamp(2.5rem, 6vh, 5rem);
}

.hero__title {
  font-size: clamp(2.75rem, 6.6vw, 6rem);
  line-height: 0.96;
  letter-spacing: -0.025em;
  font-weight: 700;
  text-wrap: balance;
}

.hero__support {
  font-size: clamp(1.0625rem, 1.5vw, 1.3125rem);
  line-height: 1.5;
  max-width: 44ch;
  margin-top: 1.75rem;
  color: var(--paper);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 2.5rem;
}

.hero__base {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line-on-ink);
  padding-block: 1.1rem 3.4rem;
  position: relative;
  z-index: 2;
}

/* Painel de telemetria */

.panel {
  border: 1px solid var(--line-on-ink);
  background: rgba(10, 10, 10, 0.62);
  padding: 1.1rem 1.25rem 0.9rem;
  max-width: 460px;
  justify-self: end;
  width: 100%;
}

.panel__title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--paper) !important;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line-on-ink);
}

.panel__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--paper);
  animation: pulse 2.2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

.panel__section {
  margin: 0.9rem 0 0.6rem;
}

.panel__metrics {
  display: grid;
  gap: 0.45rem;
}

.metric {
  display: grid;
  grid-template-columns: 5.5rem 1fr auto;
  align-items: center;
  gap: 0.75rem;
}

.metric__label { }

.metric__value {
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.metric__spark { width: 120px; height: 24px; opacity: 0.8; }

.panel__split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  border-top: 1px solid var(--line-on-ink);
  margin-top: 1rem;
}

.panel__channels ul { display: grid; gap: 0.4rem; }
.panel__channels li {
  display: grid;
  grid-template-columns: 6.2em 1fr;
  align-items: center;
  gap: 0.6rem;
}
.panel__channels i {
  display: block;
  height: 3px;
  background: linear-gradient(to right, var(--paper) calc(var(--w) * 100%), rgba(236,232,223,0.16) calc(var(--w) * 100%));
}

.panel__logs ul { display: grid; gap: 0.4rem; }
.panel__logs li { white-space: nowrap; }

.panel__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid var(--line-on-ink);
  margin-top: 1rem;
  padding-top: 0.75rem;
}

.panel__grid-dots {
  flex: 1;
  height: 10px;
  background-image: radial-gradient(rgba(236,232,223,0.4) 1px, transparent 1px);
  background-size: 8px 5px;
}

/* ---------- Manifesto ---------- */

.manifesto {
  padding-block: clamp(5rem, 14vh, 10rem);
}

.manifesto__text p {
  font-size: clamp(1.625rem, 3.6vw, 3rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
  font-weight: 700;
  max-width: 50ch;
  text-wrap: pretty;
}

.manifesto__text p + p { margin-top: 2.25rem; }

.manifesto__sign { margin-top: 3rem; }

/* ---------- Transição Silêncio → Clareza ---------- */

.wipe {
  position: relative;
  height: 260vh;
  background: var(--ink);
}

.wipe__sticky {
  position: sticky;
  top: 0;
  height: 100svh;
  overflow: hidden;
}

.wipe__layer {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  text-align: center;
  padding: var(--gutter);
}

.wipe__layer--dark { background: var(--ink); color: var(--paper); }

.wipe__layer--light {
  background: var(--paper);
  color: var(--ink);
  clip-path: inset(100% 0 0 0);
  will-change: clip-path;
}

.wipe__kicker { color: var(--fog); }
.wipe__layer--light .wipe__kicker { color: var(--ink); }

.wipe__word {
  font-size: clamp(3rem, 11vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1;
  text-transform: uppercase;
}

.wipe__line { color: var(--fog); }
.wipe__layer--light .wipe__line { color: var(--ink); }

/* Fallback sem JS: corte seco no meio da rolagem */
@supports (animation-timeline: view()) {
  /* progressão CSS pura onde houver suporte; JS cobre o resto */
}

/* ---------- Seções em Paper ---------- */

.pos, .pillars, .method, .rules, .lexicon, .firm {
  padding-block: clamp(5rem, 12vh, 9rem);
}

.pos__lead .lead,
.pillars__lead .lead,
.method__lead .lead,
.rules__lead .lead,
.lexicon__lead .lead,
.firm__lead .lead {
  margin-top: 1.5rem;
}

.pos__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  margin-top: clamp(3rem, 7vh, 5rem);
}

.pos__cols h3 { margin-bottom: 1rem; font-weight: 400; }
.pos__cols p { font-size: 0.9375rem; line-height: 1.6; }

/* Citação com brackets (glyph de citação do sistema) */
.quote {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: stretch;
  gap: clamp(1rem, 3vw, 2.5rem);
  margin-top: clamp(3.5rem, 8vh, 6rem);
  max-width: 62rem;
}

.quote__bracket {
  font-size: clamp(4rem, 9vw, 7.5rem);
  font-weight: 300;
  line-height: 0.9;
  color: var(--fog);
  font-family: var(--font-mono);
  user-select: none;
}
.quote__bracket:last-child { align-self: end; }

.quote blockquote {
  /* Piso em 24px: mantém o texto na faixa "large" da WCAG mesmo no estado
     não resolvido, onde Fog sobre Paper marca 3.01:1. */
  font-size: clamp(1.5rem, 2.6vw, 2.125rem);
  line-height: 1.28;
  font-weight: 500;
  letter-spacing: -0.01em;
  align-self: center;
  text-wrap: pretty;
}

/* Leitura progressiva — só existe quando o JS assume; sem JS o texto é Ink pleno.
   A palavra não lida é uma transparência do próprio Ink (4.5:1 sobre Paper), não
   Fog: o brand book reserva Fog a metadados, nunca a corpo de texto principal. */
.quote[data-quote].is-progressive blockquote .w {
  color: rgba(10, 10, 10, 0.58);
  transition: color 520ms var(--ease-out);
}

.quote[data-quote].is-progressive blockquote .w.is-read { color: var(--ink); }

.quote__bracket { transition: color 600ms var(--ease-out); }
.quote[data-quote].is-progressive .quote__bracket { color: var(--stone); }
.quote[data-quote].is-progressive .quote__bracket.is-read { color: var(--fog); }

/* ---------- Pilares ---------- */

.pillars__row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  margin-top: clamp(3rem, 7vh, 5rem);
  counter-reset: pillar;
}

.pillars__row li {
  border-top: 1px solid var(--ink);
  padding-top: 1rem;
}

.pillars__row li > span { display: block; }

.pillars__row h3 {
  font-size: clamp(1.375rem, 1.9vw, 1.75rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 1.75rem 0 0.875rem;
}

.pillars__row p { font-size: 0.9375rem; line-height: 1.6; }

/* ---------- Circuito: as ligações entre as camadas ---------- */

.circuit { display: none; }

.circuit.is-ready {
  display: block;
  position: relative;
  margin-top: 0.5rem;
}

.circuit__stem {
  stroke: var(--ink);
  stroke-width: 1;
  opacity: 0.14;
}

.circuit svg { display: block; width: 100%; overflow: visible; }

.circuit__link {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1;
  opacity: 0.28;
  transition: opacity 450ms var(--ease-out), stroke-width 450ms var(--ease-out);
}

/* Dado mede: traço interrompido lê como aferição */
.circuit__link--valida { stroke-dasharray: 4 4; }

.circuit__node {
  fill: var(--ink);
  opacity: 0.3;
  transition: opacity 450ms var(--ease-out);
}

/* Rótulo curto, sempre visível: o verbo da ligação */
.circuit__tag {
  position: absolute;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  opacity: 0.5;
  background: var(--paper);
  padding: 0.15em 0.5em;
  white-space: nowrap;
  transition: opacity 450ms var(--ease-out);
  pointer-events: none;
}

/* Rótulo longo: a consequência, só quando a camada está em foco */
.circuit__consequence {
  position: absolute;
  transform: translate(-50%, -50%);
  max-width: 22ch;
  text-align: center;
  font-size: 0.8125rem;
  line-height: 1.35;
  color: var(--ink);
  background: var(--paper);
  padding: 0.4em 0.7em;
  opacity: 0;
  transition: opacity 400ms var(--ease-out);
  pointer-events: none;
  text-wrap: balance;
}

/* Estado engajado: a camada em foco acende suas ligações */
.circuit.is-engaged .circuit__link { opacity: 0.08; }
.circuit.is-engaged .circuit__node { opacity: 0.15; }
.circuit.is-engaged .circuit__tag { opacity: 0; }

.circuit .circuit__link.is-on {
  opacity: 1;
  stroke-width: 1.5;
}
.circuit .circuit__node.is-on { opacity: 1; }
.circuit .circuit__consequence.is-on { opacity: 1; }

.pillars__row li {
  transition: opacity 450ms var(--ease-out);
}
.pillars.is-engaged .pillars__row li { opacity: 0.35; }
.pillars.is-engaged .pillars__row li.is-on { opacity: 1; }

.pillars__why {
  margin-top: clamp(3.5rem, 8vh, 6rem);
  max-width: 62rem;
}
.pillars__why h3 { margin-bottom: 1rem; font-weight: 400; max-width: 100%; }
.pillars__why p { max-width: 75ch; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- Método ---------- */

.method__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  margin-top: clamp(3rem, 7vh, 5rem);
}

.method__steps li {
  border-top: 1px solid var(--ink);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
}

.method__glyph {
  width: 48px;
  height: 48px;
  margin-top: 1.5rem;
  color: var(--ink);
}

/* ---------- Método: cada etapa executa o próprio verbo no hover ---------- */

.method__steps li { position: relative; }

/* A régua superior preenche da esquerda: a etapa entra em curso */
.method__steps li::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 2px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 600ms var(--ease-out);
}
.method__steps li > .mono-xs {
  transition: opacity 400ms var(--ease-out), transform 500ms var(--ease-out);
  opacity: 0.6;
}

.g * { transform-box: fill-box; transform-origin: center; }

.g__dot { transform-origin: center; }

.g__core {
  transform-origin: center;
  transition: transform 600ms var(--ease-out) 260ms;
}

.g__bar {
  transform-origin: left center;
  transition: transform 620ms var(--ease-out);
}

/* Em repouso a estimativa é pontilhada; o traço firme só existe no hover */
.g__draw {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}

.g__point {
  transform-origin: center;
  transition: transform 500ms var(--ease-out) 520ms;
}

.g__task { transform-origin: left center; }

@keyframes scan {
  0%   { opacity: 1;    transform: scale(1); }
  35%  { opacity: 0.25; transform: scale(0.6); }
  100% { opacity: 1;    transform: scale(1); }
}
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes build {
  from { transform: scaleX(0.06); }
  to   { transform: scaleX(1); }
}

/* Só em dispositivos com ponteiro real: em touch o :hover fica preso após o toque */
@media (hover: hover) and (pointer: fine) {
  .method__steps li:hover::before { transform: scaleX(1); }

  .method__steps li:hover > .mono-xs {
    opacity: 1;
    transform: translateX(3px);
  }

  /* 01 · Leitura — a varredura passa e o núcleo assenta */
  .method__steps li:hover .g__dot {
    animation: scan 900ms var(--ease-out) both;
    animation-delay: calc(var(--i) * 90ms);
  }
  .method__steps li:hover .g__core { transform: scale(1.35); }

  /* 02 · Priorização — a primeira avança, as outras recuam */
  .method__steps li:hover .g__bar { transform: scaleX(var(--s)); }

  /* 03 · Estimativa — o pontilhado vira traço firme e o ponto assenta */
  .method__steps li:hover .g__draw { animation: draw 780ms var(--ease-out) forwards; }
  .method__steps li:hover .g__point { transform: scale(1.45); }

  /* 04 · Plano — o cronograma se monta, tarefa a tarefa */
  .method__steps li:hover .g__task {
    animation: build 620ms var(--ease-out) both;
    animation-delay: calc(var(--i) * 110ms);
  }
}

.method__steps h3 {
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  margin: 1.25rem 0 0.75rem;
}

.method__steps p { font-size: 0.9375rem; line-height: 1.6; }

.method__example {
  margin-top: clamp(3.5rem, 8vh, 6rem);
  border: 1px solid var(--ink);
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
  max-width: 62rem;
  background: var(--paper);
}

.method__example-tag { display: block; margin-bottom: 1.25rem; }

.method__example-text {
  font-size: clamp(0.9375rem, 1.25vw, 1.0625rem);
  line-height: 1.7;
  letter-spacing: 0;
  max-width: 72ch;
}

/* ---------- Princípios (livro de regras full-bleed) ---------- */

.rules { overflow-x: clip; }

.rules__list {
  --rules-indent: calc(3.5rem + clamp(1rem, 3vw, 2.5rem));
  margin-top: clamp(3rem, 7vh, 5rem);
  margin-inline: var(--bleed); /* réguas de borda a borda do viewport */
  border-top: 1px solid var(--ink);
}

.rules__list li {
  position: relative;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
  transition: background-color 550ms var(--ease-out), color 550ms var(--ease-out);
}

.rules__list li:hover:not(.is-open) { background: var(--stone); }

/* A regra ativa inverte: silêncio dentro da clareza */
[data-acc].is-open {
  background: var(--ink);
  color: var(--paper);
}

/* Número-carimbo fantasma da regra ativa */
[data-acc]::after {
  content: attr(data-num);
  content: attr(data-num) / "";
  position: absolute;
  right: var(--edge);
  bottom: -0.06em;
  font-size: clamp(5.5rem, 13vw, 10.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ink-2);
  opacity: 0;
  transition: opacity 700ms var(--ease-out);
  pointer-events: none;
  z-index: 0;
}
[data-acc].is-open::after { opacity: 1; }

.rules__head {
  width: 100%;
  display: grid;
  grid-template-columns: 3.5rem 1fr auto;
  align-items: baseline;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: clamp(1.5rem, 3vh, 2.125rem) var(--edge);
  text-align: left;
  color: inherit;
  position: relative;
  z-index: 1;
}

.rules__head .mono { font-size: 0.8125rem; }

.rules__head h3 {
  font-size: clamp(1.5rem, 3.2vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  transition: transform 600ms var(--ease-out);
}

.rules__list li:hover:not(.is-open) h3 { transform: translateX(0.4rem); }

.rules__cross {
  position: relative;
  width: 22px;
  height: 22px;
  justify-self: end;
  align-self: center;
  transition: transform 500ms var(--ease-out);
}
.rules__cross::before, .rules__cross::after {
  content: "";
  position: absolute;
  background: currentColor;
}
.rules__cross::before { left: 0; right: 0; top: 10px; height: 1.5px; }
.rules__cross::after  { top: 0; bottom: 0; left: 10px; width: 1.5px; }

[data-acc].is-open .rules__cross { transform: rotate(45deg); }

/* Sem JS: tudo aberto por padrão; JS colapsa e controla */
.rules__body {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 600ms var(--ease-out);
}
.rules__body > div {
  overflow: hidden;
  padding-inline: var(--edge);
  position: relative;
  z-index: 1;
}
.rules__body p {
  padding: 0.25rem 0 2.5rem;
  max-width: 62ch;
  margin-left: var(--rules-indent);
  font-size: 1.0625rem;
  line-height: 1.65;
}

.js .rules__body { grid-template-rows: 0fr; }
.js [data-acc].is-open .rules__body { grid-template-rows: 1fr; }

/* ---------- Palco sequencial das regras (desktop + pointer fine + motion ok) ---------- */

.rules__scrub { display: none; position: relative; }

/* O palco é Ink de borda a borda: a seção inteira vira sala de máquinas */
.rules--stage {
  overflow-x: visible; /* `clip` quebraria position: sticky */
  padding-bottom: 0;
}

.rules--stage .rules__scrub {
  display: block;
  height: var(--rules-scrub, 500vh);
  background: var(--ink);
  color: var(--paper);
  margin-inline: var(--bleed);
  margin-top: clamp(3rem, 7vh, 5rem);
}

.stage {
  position: sticky;
  top: 0;
  height: 100svh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.stage__top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem var(--edge) 1.1rem;
  border-bottom: 1px solid var(--line-on-ink);
}

.stage__grid {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  padding-inline: var(--edge);
}

.stage__panels {
  position: relative;
  align-self: stretch;
}

/* Painéis: opacity + pointer-events (não visibility) para permanecerem legíveis
   por leitores de tela; os cinco princípios são lidos em ordem. */
.stage__panel {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(1.25rem);
  transition: opacity 420ms var(--ease-out), transform 620ms var(--ease-out);
}

.stage__panel.is-current {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

.stage__panel.is-past { transform: translateY(-1.25rem); }

.stage__panel h3 {
  font-size: clamp(2.25rem, 4.4vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.02;
  text-wrap: balance;
  max-width: 16ch;
}

.stage__panel p {
  margin-top: 1.75rem;
  max-width: 56ch;
  font-size: 1.0625rem;
  line-height: 1.7;
}

.stage__side {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

/* Contador mecânico: 0 fixo + tambor de unidades */
.stage__counter {
  display: flex;
  line-height: 1;
  font-size: clamp(6.5rem, 22vh, 11.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}

.stage__drum {
  display: block;
  height: 1em;
  overflow: hidden;
}

.stage__drum-col {
  display: flex;
  flex-direction: column;
  will-change: transform;
}

.stage__drum-col i {
  font-style: normal;
  display: block;
  height: 1em;
  line-height: 1;
}

/* Trilho inferior: índice mecânico das cinco regras */
.stage__rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  border-top: 1px solid var(--line-on-ink);
  padding-inline: var(--edge);
}

.stage__rail button {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  /* folga inferior livra o HUD fixo (34px) */
  padding: 1.15rem 0 3.5rem;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fog);
  text-align: left;
  transition: color 350ms var(--ease-out);
  position: relative;
  min-width: 0;
}

.stage__rail button::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: var(--paper);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 550ms var(--ease-out);
}

.stage__rail button b {
  font-weight: 500;
  font-size: 0.8125rem;
  color: inherit;
}

.stage__rail button em {
  font-style: normal;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
  text-transform: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.stage__rail button:hover { color: var(--paper); }
.stage__rail button.is-active { color: var(--paper); }
.stage__rail button.is-active::before { transform: scaleX(1); }

.stage__progress {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--ink-2);
}

.stage__progress span {
  display: block;
  height: 100%;
  background: var(--paper);
  transform: scaleX(0);
  transform-origin: left;
}

/* ---------- Vocabulário ---------- */

.lexicon__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 4vw, 3.5rem) clamp(1.5rem, 3vw, 3rem);
  margin-top: clamp(3rem, 7vh, 5rem);
}

.lexicon__grid > div {
  border-top: 1px solid var(--ink);
  padding-top: 1rem;
}

.lexicon__grid dt {
  font-size: clamp(1.25rem, 1.8vw, 1.625rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 0.75rem;
}

.lexicon__grid dd { font-size: 0.9375rem; line-height: 1.6; }

/* ---------- A sociedade ---------- */

.firm__amp { color: var(--fog); font-weight: 400; }

.firm__cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  margin-top: clamp(3rem, 7vh, 5rem);
}

.firm__cols h3 { margin-bottom: 1rem; font-weight: 400; }
.firm__cols p { font-size: 0.9375rem; line-height: 1.65; }
.firm__cols em { font-style: normal; font-weight: 700; }

/* ---------- Contato ---------- */

.contact { padding-block: clamp(5rem, 14vh, 10rem); }

.contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
}

.contact__copy .lead { margin-top: 1.5rem; }

.contact__mail {
  display: inline-block;
  margin-top: 2.75rem;
  font-size: clamp(1.375rem, 3.2vw, 2.625rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-decoration: none;
  border-bottom: 2px solid var(--paper);
  padding-bottom: 0.2em;
  transition: color 400ms var(--ease-out), border-color 400ms var(--ease-out);
  overflow-wrap: anywhere;
}
.contact__mail:hover { color: var(--fog); border-color: var(--fog); }

.contact__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.glyph-cross { font-family: var(--font-mono); }

.contact__stamp { display: grid; place-items: center; }

.stamp {
  width: clamp(180px, 22vw, 260px);
  color: var(--fog);
}

.stamp__text text {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 3px;
  fill: currentColor;
}

@media (prefers-reduced-motion: no-preference) {
  .stamp { animation: spin 48s linear infinite; }
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Rodapé ---------- */

.footer {
  border-top: 1px solid var(--line-on-ink);
  padding-block: clamp(4rem, 9vh, 7rem) 5.5rem;
}

.footer__mark {
  font-size: clamp(5rem, 17vw, 13rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.85;
}
.footer__mark sup { font-size: 0.14em; vertical-align: 4.2em; letter-spacing: 0.1em; }

.footer__sub {
  margin-top: 1.5rem;
  color: var(--fog);
}

.footer__rows {
  margin-top: clamp(2.5rem, 6vh, 4rem);
  border-top: 1px solid var(--line-on-ink);
  color: var(--fog);
}

.footer__row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line-on-ink);
  flex-wrap: wrap;
}

/* ---------- HUD ---------- */

.hud {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: var(--z-hud);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.55rem var(--gutter);
  mix-blend-mode: difference;
  color: var(--paper);
  pointer-events: none;
  font-variant-numeric: tabular-nums;
}

.hud__left { display: inline-flex; align-items: center; gap: 0.6rem; }

.hud__pulse {
  width: 6px; height: 6px;
  background: currentColor;
  animation: pulse 2.2s infinite;
}

/* ---------- Reveals (aplicados apenas com JS ativo) ---------- */

.js [data-reveal].pre,
.js [data-reveal-stagger].pre > *,
.js [data-reveal-lines].pre > * {
  opacity: 0;
  transform: translateY(26px);
}

.js [data-reveal].in,
.js [data-reveal-stagger].in > *,
.js [data-reveal-lines].in > * {
  opacity: 1;
  transform: none;
  transition: opacity 800ms var(--ease-out), transform 800ms var(--ease-out);
  transition-delay: calc(var(--i, 0) * 90ms);
}

/* ---------- Responsivo ---------- */

@media (max-width: 1060px) {
  .hero__grid {
    grid-template-columns: 1fr;
    align-items: start;
  }
  .panel { justify-self: start; }

  .pos__cols { grid-template-columns: 1fr 1fr; }
  .pillars__row { grid-template-columns: 1fr 1fr; row-gap: 2.5rem; }
  .method__steps { grid-template-columns: 1fr 1fr; row-gap: 2.5rem; }
  .lexicon__grid { grid-template-columns: 1fr 1fr; }
  .firm__cols { grid-template-columns: 1fr 1fr; row-gap: 2.5rem; }
  .contact__grid { grid-template-columns: 1fr; }
  .contact__stamp { justify-content: start; margin-top: 1rem; }
}

@media (max-width: 720px) {
  html { scroll-padding-top: 4.5rem; }

  .nav { gap: 1rem; padding-block: 0.9rem; }
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .btn--nav { display: none; }
  .nav__end { gap: 0.8rem; }

  .hero { padding-top: 5.5rem; }
  .hero__head { flex-direction: column; gap: 0.25rem; }
  .hero__base { flex-direction: column; gap: 0.2rem; }

  .metric { grid-template-columns: 4.5rem 1fr auto; }
  .metric__spark { width: 72px; }
  .panel__split { grid-template-columns: 1fr; }

  .pos__cols { grid-template-columns: 1fr; }
  .pillars__row { grid-template-columns: 1fr; }
  .method__steps { grid-template-columns: 1fr; }
  .lexicon__grid { grid-template-columns: 1fr; }
  .firm__cols { grid-template-columns: 1fr; }

  .rules__list { --rules-indent: 0rem; }
  .rules__head { grid-template-columns: 2.25rem 1fr auto; gap: 1rem; }


  .quote { grid-template-columns: auto 1fr; }
  .quote__bracket:last-child { display: none; }

  .hud__stamp { display: none; }

  .wipe { height: 200vh; }
}

/* ---------- Movimento reduzido ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .wipe { height: auto; }
  .wipe__sticky { position: static; height: auto; }
  .wipe__layer { position: static; min-height: 60svh; }
  .wipe__layer--light { clip-path: none; }

  .js [data-reveal].pre,
  .js [data-reveal-stagger].pre > *,
  .js [data-reveal-lines].pre > * {
    opacity: 1;
    transform: none;
  }
}