/* Site da Nuzi — paleta "Tijolo cozido" (tijolo, argila natural, barro) e tema escuro em grafite. */
:root {
  --bg: #f7f1ec;
  --surface: #ffffff;
  --sunken: #efe6df;
  --ink: #1e1412;
  --muted: #6b5a55;
  --line: #e8ddd5;
  --line-strong: #d5c6bc;
  --brick: #b23a2b;
  --brick-deep: #6e1f16;
  --brick-ink: #9a2f22;
  --brick-wash: #f6e2dd;
  --on-brick: #ffffff;
  --tablet: #ead7bf;
  --slip: #d8b894;
  --slip-deep: #c99d6e;
  --focus: #2c6bd6;

  /* Cena e motivos */
  --sol: #f6e2dd;
  --zig: #eadbcd;
  --palma: #dccbbd;
  --friso-fundo: #ecdcca;
  --friso-motivo: #c99d6e;
  --friso-luz: rgb(255 255 255 / 0.55);
  --grao: 0.05;

  --display: 'Newsreader', Georgia, 'Times New Roman', serif;
  --ui: system-ui, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono: ui-monospace, 'Cascadia Code', Consolas, monospace;
  --mola: cubic-bezier(0.34, 1.56, 0.64, 1);
  --suave: cubic-bezier(0.22, 1, 0.36, 1);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1d1f;
    --surface: #26272a;
    --sunken: #151618;
    --ink: #f7f1ec;
    --muted: #aeb1b6;
    --line: #36383c;
    --line-strong: #4d5056;
    --brick-ink: #e8907f;
    --brick-wash: #3d2a27;
    --focus: #8ab4f8;
    --sol: #2c2524;
    --zig: #2a2b2e;
    --palma: #34363a;
    --friso-fundo: #232427;
    --friso-motivo: #45474c;
    --friso-luz: rgb(255 255 255 / 0.07);
    --grao: 0.035;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 var(--ui);
  overflow-x: hidden;
}
/* Grão de argila, bem leve, por cima de tudo. */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: var(--grao);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .4 0 0 0 0 .25 0 0 0 0 .2 0 0 0 1.2 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23g)'/%3E%3C/svg%3E");
}
a {
  color: var(--brick-ink);
}
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 500;
  line-height: 1.15;
  text-wrap: balance;
  margin: 0;
}
h2 {
  font-size: clamp(32px, 4.4vw, 44px);
}
p {
  margin: 0;
}
code {
  font: 0.88em/1.4 var(--mono);
  background: var(--sunken);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 6px;
}
img {
  max-width: 100%;
  height: auto;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 50;
  background: var(--surface);
  padding: 10px 16px;
  border-radius: 10px;
}
.skip:focus {
  top: 12px;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding-inline: 24px;
}

/* ---------- Topo ---------- */
.top {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition:
    border-color 0.3s,
    box-shadow 0.3s;
}
.top.rolou {
  border-bottom-color: var(--line);
  box-shadow: 0 8px 24px rgb(30 20 18 / 0.06);
}
.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  transition: min-height 0.3s var(--suave);
}
.top.rolou .wrap {
  min-height: 60px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--display);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.brand-logo {
  width: 38px;
  height: 38px;
  overflow: visible;
}
.bl-t {
  transform-box: fill-box;
  transform-origin: 50% 100%;
  transition: transform 0.4s var(--mola);
}
.brand:hover .bl-1,
.brand:focus-visible .bl-1 {
  transform: translate(-2px, -7px) rotate(-8deg);
}
.brand:hover .bl-2,
.brand:focus-visible .bl-2 {
  transform: translate(2px, -6px) rotate(8deg);
  transition-delay: 0.04s;
}
.brand:hover .bl-3,
.brand:focus-visible .bl-3 {
  transform: translateY(-11px);
  transition-delay: 0.08s;
}
.menu {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 15px;
}
.menu a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 12px;
  border-radius: 10px;
  color: var(--muted);
  text-decoration: none;
  transition:
    color 0.2s,
    background 0.2s;
}
.menu a:hover {
  color: var(--ink);
  background: var(--sunken);
}
/* Página ou seção atual: uma cunha sob o link. */
.menu a:not(.nav-apoio):not(.nav-instalar)::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 3px;
  width: 16px;
  height: 6px;
  margin-left: -8px;
  background: var(--brick);
  clip-path: polygon(0 0, 36% 40%, 100% 45%, 100% 55%, 36% 60%, 0 100%);
  opacity: 0;
  transform: translateY(4px) scaleX(0.4);
  transition:
    opacity 0.2s,
    transform 0.35s var(--mola);
}
.menu a[aria-current] {
  color: var(--ink);
}
.menu a[aria-current]::after {
  opacity: 1;
  transform: none;
}
.nav-apoio {
  margin-left: 8px;
  background: var(--brick-wash);
  color: var(--brick-ink) !important;
  font-weight: 600;
  padding: 0 16px 0 12px !important;
  border-radius: 999px !important;
}
.nav-apoio:hover {
  background: var(--brick-wash) !important;
}
.nav-apoio[aria-current] {
  box-shadow: inset 0 0 0 1.5px var(--brick);
}
.ico-cesto {
  width: 18px;
  height: 18px;
  transition: transform 0.4s var(--mola);
}
.nav-apoio:hover .ico-cesto {
  transform: rotate(-10deg) translateY(-1px);
}
/* Instalar: a ação principal, cheia de tijolo. */
.nav-instalar {
  margin-left: 6px;
  background: var(--brick);
  color: var(--on-brick) !important;
  font-weight: 600;
  padding: 0 18px !important;
  border-radius: 999px !important;
  transition: background 0.2s, transform 0.2s var(--mola) !important;
}
.nav-instalar:hover {
  background: #9a2f22 !important;
  transform: translateY(-1px);
}

/* Linha de progresso da leitura, com uma cunha na ponta. */
.progresso {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  pointer-events: none;
}
.progresso span {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: calc(var(--p, 0) * 100%);
  background: linear-gradient(90deg, var(--slip-deep), var(--brick));
}
.progresso span::after {
  content: '';
  position: absolute;
  right: -4px;
  top: -3px;
  width: 12px;
  height: 9px;
  background: var(--brick);
  clip-path: polygon(100% 0, 64% 40%, 0 45%, 0 55%, 64% 60%, 100% 100%);
  opacity: min(1, calc(var(--p, 0) * 40));
}

/* Botão do menu (celular): três cunhas que viram um X. */
.menu-btn {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
}
.menu-btn span {
  position: absolute;
  left: 12px;
  width: 20px;
  height: 7px;
  background: var(--ink);
  clip-path: polygon(0 0, 36% 40%, 100% 45%, 100% 55%, 36% 60%, 0 100%);
  transition:
    transform 0.35s var(--mola),
    opacity 0.2s;
}
.menu-btn span:nth-child(1) {
  top: 11px;
}
.menu-btn span:nth-child(2) {
  top: 18.5px;
}
.menu-btn span:nth-child(3) {
  top: 26px;
}
.menu-btn[aria-expanded='true'] span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.menu-btn[aria-expanded='true'] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0.3);
}
.menu-btn[aria-expanded='true'] span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

@media (max-width: 760px) {
  .top .wrap {
    min-height: 64px;
  }
  .menu-btn {
    display: block;
  }
  .js .menu {
    position: absolute;
    left: 12px;
    right: 12px;
    top: calc(100% + 8px);
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px;
    border-radius: 18px;
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: 0 24px 48px rgb(30 20 18 / 0.18);
    font-size: 17px;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
    transform-origin: top right;
    transition:
      opacity 0.2s,
      transform 0.3s var(--mola),
      visibility 0s 0.3s;
  }
  .js .top.aberto .menu {
    visibility: visible;
    opacity: 1;
    transform: none;
    transition:
      opacity 0.2s,
      transform 0.35s var(--mola);
  }
  .js .menu a {
    min-height: 52px;
    padding: 0 14px;
    opacity: 0;
    transform: translateX(-8px);
    transition:
      opacity 0.2s,
      transform 0.35s var(--mola),
      background 0.2s;
  }
  .js .top.aberto .menu a {
    opacity: 1;
    transform: none;
  }
  .js .top.aberto .menu a:nth-child(2) {
    transition-delay: 0.04s;
  }
  .js .top.aberto .menu a:nth-child(3) {
    transition-delay: 0.08s;
  }
  .js .top.aberto .menu a:nth-child(4) {
    transition-delay: 0.12s;
  }
  .menu a:not(.nav-apoio):not(.nav-instalar)::after {
    left: 0;
    bottom: 50%;
    margin: 0 0 -3px;
  }
  .nav-apoio,
  .nav-instalar {
    margin: 6px 0 0;
    justify-content: center;
  }
  /* Sem JS: os links ficam numa linha que rola de lado. */
  html:not(.js) .menu {
    overflow-x: auto;
  }
}

/* ---------- Botões e chips ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font: 600 16px/1 var(--ui);
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 0.2s var(--mola),
    background 0.2s,
    border-color 0.2s;
}
.btn:hover {
  transform: translateY(-2px);
}
.btn:active {
  transform: translateY(1px) scale(0.98);
}
.btn-primary {
  background: var(--brick);
  border-color: var(--brick);
  color: var(--on-brick);
}
.btn-primary:hover {
  background: #9a2f22;
  border-color: #9a2f22;
}
.btn[aria-disabled='true'] {
  opacity: 0.6;
  cursor: default;
  transform: none;
}
.chip {
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font: 500 14px/1 var(--ui);
  cursor: pointer;
  transition:
    background 0.2s,
    transform 0.2s var(--mola);
}
.chip:hover {
  background: var(--brick-wash);
  transform: translateY(-1px);
}

/* ---------- Seções ---------- */
main {
  display: flex;
  flex-direction: column;
  gap: 72px;
  padding-block: 48px 72px;
}
main > .wrap {
  width: 100%;
}
section {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sec-head {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
/* Uma cunha cuneiforme antes do sobretítulo. */
.eyebrow::before {
  content: '';
  flex: none;
  width: 22px;
  height: 10px;
  background: var(--brick);
  clip-path: polygon(0 0, 36% 40%, 100% 45%, 100% 55%, 36% 60%, 0 100%);
}
.lede {
  font-size: 20px;
  color: var(--muted);
  max-width: 62ch;
}
.prose {
  max-width: 68ch;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.prose h2 {
  font-size: 30px;
  margin-top: 24px;
}
.prose ul {
  margin: 0;
  padding-left: 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.shot {
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px rgb(30 20 18 / 0.18);
}

/* ---------- Entrada ao rolar: a peça assenta como argila pressionada ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px) scale(1.015);
  transition:
    opacity 0.6s var(--suave),
    transform 0.7s var(--mola);
  transition-delay: calc(var(--ordem, 0) * 70ms);
}
.js [data-reveal].dentro {
  opacity: 1;
  transform: none;
}

/* ---------- Capa ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  min-height: min(640px, calc(100vh - 140px));
}
.hero-text {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.hero h1 {
  font-size: clamp(40px, 6vw, 66px);
  letter-spacing: -0.01em;
}
.hero .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.hero .note {
  font-size: 14px;
  color: var(--muted);
}

.scene {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  border-radius: 24px;
  -webkit-tap-highlight-color: transparent;
}
.scene svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}
.sc-sol {
  fill: var(--sol);
}
.sc-zig {
  color: var(--zig);
  --motivo-luz: var(--bg);
}
.sc-palma {
  color: var(--palma);
  --motivo-luz: var(--bg);
}
.sc-far,
.sc-mid {
  transition: transform 0.6s var(--suave);
}
.sc-chao {
  stroke: var(--line-strong);
  stroke-width: 2;
  stroke-linecap: round;
}
.scene-dica {
  position: absolute;
  right: 8%;
  top: 6%;
  font: 600 12px/1 var(--ui);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0;
  transition: opacity 0.3s;
}
.scene:hover .scene-dica,
.scene:focus-visible .scene-dica {
  opacity: 1;
}

/* As tábuas: caem (aceleram), achatam no impacto, quicam e assentam. */
.tb,
.tb-lift,
.wd,
.poeira circle {
  transform-box: fill-box;
}
.tb {
  transform-origin: 50% 100%;
}
.tb-lift {
  transform-origin: 50% 100%;
  transition: transform 0.35s var(--mola);
}
.scene:hover .tb-lift,
.scene:focus-visible .tb-lift {
  transform: translateY(-5px);
}
.scene:hover .tb-1 .tb-lift {
  transform: translateY(-4px) rotate(-2deg);
}
.scene:hover .tb-2 .tb-lift {
  transform: translateY(-3px) rotate(2deg);
}
.js .scene .tb {
  opacity: 0;
}
.scene.cai .tb {
  animation: cair 1.05s both;
}
.scene.cai .tb-1 {
  --r0: -14deg;
  animation-delay: 0.15s;
}
.scene.cai .tb-2 {
  --r0: 12deg;
  animation-delay: 0.32s;
}
.scene.cai .tb-3 {
  --r0: -6deg;
  animation-delay: 0.52s;
}
@keyframes cair {
  0% {
    opacity: 0;
    transform: translateY(-120px) rotate(var(--r0));
    animation-timing-function: cubic-bezier(0.55, 0, 0.9, 0.45);
  }
  8% {
    opacity: 1;
  }
  50% {
    transform: translateY(0) rotate(0);
    animation-timing-function: ease-out;
  }
  58% {
    transform: translateY(0) scale(1.07, 0.88);
    animation-timing-function: ease-out;
  }
  72% {
    transform: translateY(-9px) scale(0.97, 1.04);
    animation-timing-function: ease-in;
  }
  86% {
    transform: translateY(0) scale(1.02, 0.97);
  }
  100% {
    opacity: 1;
    transform: none;
  }
}
.wd {
  transform-origin: 30% 50%;
}
.js .scene .wd {
  opacity: 0;
}
.scene.cai .wd {
  animation: cunhar 0.36s var(--mola) both;
  animation-delay: calc(1.25s + var(--i) * 0.11s);
}
@keyframes cunhar {
  0% {
    opacity: 0;
    transform: scale(0.2);
  }
  60% {
    opacity: 1;
    transform: scale(1.35);
  }
  100% {
    opacity: 1;
    transform: none;
  }
}
.poeira circle {
  opacity: 0;
  transform-origin: center;
}
.scene.cai .poeira circle {
  animation: poeira 0.7s var(--suave) both;
}
.scene.cai .poeira circle:nth-child(1),
.scene.cai .poeira circle:nth-child(2) {
  animation-delay: 0.68s;
}
.scene.cai .poeira circle:nth-child(3),
.scene.cai .poeira circle:nth-child(4) {
  animation-delay: 0.85s;
}
@keyframes poeira {
  0% {
    opacity: 0.9;
    transform: translate(0, 0) scale(0.6);
  }
  100% {
    opacity: 0;
    transform: translate(var(--dx), var(--dy)) scale(1.3);
  }
}

/* ---------- Friso de selo cilíndrico ---------- */
.friso {
  position: relative;
  max-width: 1032px;
  width: calc(100% - 48px);
  height: 56px;
  margin: 0 auto;
}
.friso svg {
  color: var(--friso-motivo);
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.friso .faixa {
  fill: var(--friso-fundo);
}
.friso .motivo {
  color: var(--friso-motivo);
  --motivo-luz: var(--friso-fundo);
  --motivo-miolo: var(--friso-fundo);
}
.friso .relevo {
  filter: drop-shadow(0 1px 0 var(--friso-luz));
}

/* ---------- Demonstração: escreva na tábua ---------- */
.demo {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 20px;
  align-items: stretch;
}
.demo-form,
.demo-arquivo {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.demo-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}
.demo-form input {
  min-height: 44px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1 var(--ui);
}
.demo-form input:focus {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}
.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 4px;
}
.demo-rotulo {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.demo-tabua-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 12px;
}
.demo-tabua {
  position: relative;
  width: 100%;
  max-width: 380px;
  min-height: 200px;
  padding: 26px 26px 30px;
  border-radius: 26px;
  background:
    radial-gradient(120% 80% at 20% 10%, rgb(255 255 255 / 0.45), transparent 60%),
    radial-gradient(90% 70% at 90% 100%, rgb(110 31 22 / 0.12), transparent 70%),
    #ead7bf;
  box-shadow:
    inset 0 -6px 0 rgb(110 31 22 / 0.12),
    inset 0 2px 0 rgb(255 255 255 / 0.5),
    0 18px 40px rgb(30 20 18 / 0.18);
  transform: rotate(-2deg);
  display: flex;
  flex-direction: column;
  gap: 14px;
  color: #1e1412;
}
.demo-tabua .demo-rotulo {
  color: #8e6a45;
}
.demo-nome {
  font: 500 clamp(20px, 2.3vw, 26px) / 1.35 var(--display);
  word-break: break-word;
  min-height: 2.7em;
}
.demo-nome .seg-p {
  color: #9a2f22;
}
.demo-nome .seg-s {
  color: #8e6a45;
}
.demo-nome .sep {
  color: #b08a63;
  white-space: pre;
}
.demo-nome .seg-g {
  display: inline-block;
  font: 600 0.62em/1 var(--ui);
  color: #6e1f16;
  background: rgb(178 58 43 / 0.14);
  border-radius: 999px;
  padding: 5px 10px;
  vertical-align: 0.25em;
  margin-left: 6px;
}
.estilete {
  position: absolute;
  width: 14px;
  height: 7px;
  background: #6e1f16;
  clip-path: polygon(0 0, 36% 40%, 100% 45%, 100% 55%, 36% 60%, 0 100%);
  pointer-events: none;
  animation: estilete 0.5s var(--suave) forwards;
}
@keyframes estilete {
  0% {
    opacity: 0.9;
    transform: translate(0, 0) scale(1.6) rotate(-10deg);
  }
  100% {
    opacity: 0;
    transform: translate(10px, -14px) scale(0.6) rotate(20deg);
  }
}
.demo-tabua.bate {
  animation: bate 0.4s var(--mola);
}
@keyframes bate {
  40% {
    transform: rotate(-2deg) scale(0.96);
  }
}
.demo-dica {
  font-size: 14px;
  color: var(--muted);
  text-align: center;
  min-height: 1.6em;
}
.arvore {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.arvore li {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 10px;
  border-radius: 10px;
  font-size: 15px;
  transition: background 0.6s;
}
.arvore li.sub {
  padding-left: 34px;
}
.arvore li.solto {
  color: var(--muted);
}
.arvore .pasta {
  width: 20px;
  height: 16px;
  flex: none;
  border-radius: 3px 3px 4px 4px;
  background:
    linear-gradient(var(--brick) 0 0) bottom / 100% 72% no-repeat,
    var(--brick-deep);
}
.arvore li.sub .pasta {
  width: 16px;
  height: 13px;
  background:
    linear-gradient(var(--slip-deep) 0 0) bottom / 100% 72% no-repeat,
    #8e6a45;
}
.arvore li.solto .pasta {
  background: none;
  border: 1.5px dashed var(--line-strong);
}
.arvore .conta {
  margin-left: auto;
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.arvore li.pulsa {
  background: var(--brick-wash);
  transition: none;
}
.arvore li.pulsa .conta {
  animation: conta 0.5s var(--mola);
  color: var(--brick-ink);
  font-weight: 700;
}
@keyframes conta {
  40% {
    transform: scale(1.6);
  }
}
.arvore li.nova {
  animation: nova 0.5s var(--mola) both;
}
@keyframes nova {
  from {
    opacity: 0;
    transform: translateX(-12px);
  }
}
.voando {
  opacity: 0;
  position: fixed;
  z-index: 60;
  left: 0;
  top: 0;
  pointer-events: none;
  border-radius: 10px;
  background: #ead7bf;
  box-shadow: 0 10px 24px rgb(30 20 18 / 0.25);
  color: #1e1412;
  font: 500 14px/1.2 var(--display);
  padding: 8px 12px;
  max-width: 220px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- Abas das funcionalidades ---------- */
.abas {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}
.abas-lista {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.abas-lista [role='tab'] {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 60px;
  padding: 0 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font: 500 20px/1.2 var(--display);
  text-align: left;
  cursor: pointer;
  transition:
    transform 0.3s var(--mola),
    background 0.2s,
    border-color 0.2s;
}
.abas-lista [role='tab']:hover {
  transform: translateX(4px);
}
.abas-lista [aria-selected='true'] {
  background: var(--brick-wash);
  border-color: var(--brick);
  transform: translateX(8px);
}
/* Números cuneiformes: uma cunha em pé por unidade. */
.cnum {
  display: inline-flex;
  flex-wrap: wrap;
  align-content: center;
  justify-content: center;
  gap: 1px 2px;
  width: 24px;
  height: 30px;
  color: var(--brick);
}
.cnum svg {
  width: 7px;
  height: 13px;
}
.painel {
  display: grid;
  gap: 18px;
}
.painel[hidden] {
  display: none;
}
.painel ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.painel li {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: 15px;
}
.painel.entra .shot {
  animation: carimbo 0.7s var(--suave);
}
.painel.entra li {
  animation: nova 0.45s var(--mola) both;
  animation-delay: calc(var(--k) * 60ms);
}
@keyframes carimbo {
  from {
    clip-path: circle(0% at 20% 50%);
  }
  to {
    clip-path: circle(150% at 20% 50%);
  }
}

/* ---------- Tábuas que viram ---------- */
.linha {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  position: relative;
}
.linha::before {
  content: '';
  position: absolute;
  left: 4%;
  right: 4%;
  top: 50%;
  border-top: 2px dashed var(--line-strong);
}
.vira {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 5 / 6;
  padding: 0;
  border: 0;
  border-radius: 24px;
  background: none;
  cursor: pointer;
  perspective: 900px;
  font: inherit;
  color: inherit;
}
.face {
  position: absolute;
  inset: 0;
  border-radius: 24px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  backface-visibility: hidden;
  transition: transform 0.7s var(--mola);
  text-align: left;
}
.frente {
  background:
    radial-gradient(120% 80% at 20% 10%, rgb(255 255 255 / 0.4), transparent 60%),
    #ead7bf;
  color: #1e1412;
  box-shadow:
    inset 0 -6px 0 rgb(110 31 22 / 0.12),
    0 14px 30px rgb(30 20 18 / 0.14);
  gap: 4px;
}
.verso {
  background: var(--brick-deep);
  color: #f7f1ec;
  transform: rotateY(180deg);
  font-size: 15px;
  line-height: 1.5;
  justify-content: center;
}
.vira[aria-pressed='true'] .frente {
  transform: rotateY(-180deg);
}
.vira[aria-pressed='true'] .verso {
  transform: rotateY(0);
}
.vira:hover .frente {
  transform: rotateY(-10deg) translateY(-4px);
}
.vira[aria-pressed='true']:hover .frente {
  transform: rotateY(-180deg);
}
.frente .data {
  font: 600 13px/1 var(--ui);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #8e6a45;
}
.frente .tit {
  font: 500 26px/1.15 var(--display);
}
.frente .ico {
  margin-top: auto;
  align-self: flex-end;
  width: 58%;
  height: auto;
  max-height: 46%;
  color: #c99d6e;
  --motivo-luz: #ead7bf;
  --motivo-miolo: #ead7bf;
}
.frente img.ico {
  width: 40%;
}

/* ---------- Selos ---------- */
.selos {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.selo {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.selo h3 {
  font-size: 22px;
}
.selo p {
  color: var(--muted);
}
.selo-marca {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--brick-wash);
  color: var(--brick);
  --motivo-luz: var(--brick-wash);
  --motivo-miolo: var(--brick-wash);
  box-shadow: inset 0 3px 6px rgb(0 0 0 / 0.12);
  margin-bottom: 6px;
  transition: transform 0.4s var(--mola);
}
.selo-marca svg {
  width: 34px;
  height: 34px;
}
.selo:hover .selo-marca {
  transform: rotate(-12deg) scale(1.08);
}

/* ---------- Cesto de tokens ---------- */
.apoio {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}
.apoio-texto {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.cesto-palco {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.cesto {
  display: block;
  width: min(380px, 100%);
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  border-radius: 24px;
  -webkit-tap-highlight-color: transparent;
}
.cesto svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}
.cesto-corpo {
  transform-box: fill-box;
  transform-origin: 50% 100%;
  transition: transform 0.35s var(--mola);
}
.cesto:hover .cesto-corpo {
  transform: rotate(-2deg);
}
.cesto:active .cesto-corpo {
  transform: scale(0.98);
}
.cesto-sombra {
  fill: rgb(30 20 18 / 0.12);
}
.cesto-dica {
  font: 600 12px/1 var(--ui);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.porque {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  max-width: 62ch;
  padding: 16px 18px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: 15px;
  color: var(--muted);
}
.porque strong {
  color: var(--ink);
}

/* ---------- Navegação em zigurate (página inicial, telas largas) ---------- */
.zig {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 15;
  display: none;
}
.zig ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.zig a {
  position: relative;
  display: block;
  height: 14px;
  width: var(--w);
  border-radius: 3px;
  background: var(--line-strong);
  transition:
    background 0.3s,
    transform 0.3s var(--mola);
}
.zig a::before {
  content: '';
  position: absolute;
  inset: -4px -6px;
}
.zig a.passou {
  background: var(--slip-deep);
}
.zig a[aria-current='true'] {
  background: var(--brick);
  transform: scaleY(1.3);
}
.zig a span {
  position: absolute;
  right: calc(50% + var(--w) / 2 + 12px);
  top: 50%;
  transform: translate(6px, -50%);
  white-space: nowrap;
  font: 600 13px/1 var(--ui);
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s,
    transform 0.3s var(--mola);
}
.zig a:hover span,
.zig a:focus-visible span {
  opacity: 1;
  transform: translate(0, -50%);
}
.zig a[aria-current='true'] span {
  transform: translate(0, -50%) scaleY(0.77);
}
@media (min-width: 1240px) {
  .zig {
    display: block;
  }
}

/* ---------- Índice das páginas de texto ---------- */
.com-indice {
  display: grid;
  grid-template-columns: minmax(0, 68ch) 220px;
  justify-content: space-between;
  gap: 48px;
  align-items: start;
}
.indice {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  font-size: 14px;
}
.indice strong {
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.indice a {
  position: relative;
  padding: 6px 0 6px 20px;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid var(--line);
  transition:
    color 0.2s,
    border-color 0.2s;
}
.indice a:hover {
  color: var(--ink);
}
.indice a[aria-current='true'] {
  color: var(--ink);
  border-color: var(--brick);
}
.indice a[aria-current='true']::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 50%;
  width: 10px;
  height: 5px;
  margin-top: -2.5px;
  background: var(--brick);
  clip-path: polygon(0 0, 36% 40%, 100% 45%, 100% 55%, 36% 60%, 0 100%);
}

/* ---------- Página de apoio ---------- */
.tiers {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tier {
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--brick-wash);
  color: var(--brick-ink);
  font-weight: 600;
  transition: transform 0.3s var(--mola);
}
.tier:hover {
  transform: translateY(-3px) rotate(-2deg);
}
.pix {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px;
}
.qr {
  width: 240px;
  height: 240px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  padding: 12px;
}
.key {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.key code {
  font-size: 15px;
  word-break: break-all;
}

/* ---------- 404: a tábua quebrada ---------- */
.quebrada {
  width: 180px;
  height: auto;
  overflow: visible;
}
.quebrada .metade {
  transform-box: fill-box;
  transform-origin: 50% 100%;
  animation: balanca 3s ease-in-out infinite;
}
.quebrada .metade-2 {
  animation-delay: -1.5s;
}
@keyframes balanca {
  50% {
    transform: rotate(3deg) translateY(-3px);
  }
}

/* ---------- Rodapé ---------- */
footer {
  padding-block: 28px 48px;
  font-size: 14px;
  color: var(--muted);
}
footer .wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

@media (max-width: 960px) {
  .demo {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .demo-tabua-area {
    grid-column: 1 / -1;
    order: -1;
  }
  .abas {
    grid-template-columns: minmax(0, 1fr);
  }
  .abas-lista {
    flex-direction: row;
    overflow-x: auto;
    padding: 4px 2px 6px;
  }
  .abas-lista [role='tab'] {
    flex: none;
    min-height: 52px;
    font-size: 17px;
  }
  .abas-lista [aria-selected='true'],
  .abas-lista [role='tab']:hover {
    transform: translateY(-2px);
  }
  .linha {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .linha::before {
    display: none;
  }
  .com-indice {
    grid-template-columns: minmax(0, 1fr);
  }
  .indice {
    display: none;
  }
}
@media (max-width: 820px) {
  .hero,
  .pix,
  .apoio {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero {
    min-height: 0;
  }
  .scene {
    max-width: 440px;
    margin: 0 auto;
  }
  .selos {
    grid-template-columns: minmax(0, 1fr);
  }
  main {
    gap: 56px;
    padding-block: 32px 56px;
  }
  .wrap {
    padding-inline: 16px;
  }
  .friso {
    width: calc(100% - 32px);
    height: 44px;
  }
}
@media (max-width: 560px) {
  .demo {
    grid-template-columns: minmax(0, 1fr);
  }
  .demo-tabua-area {
    order: 0;
  }
  .linha {
    grid-template-columns: minmax(0, 1fr);
  }
  .vira {
    aspect-ratio: 7 / 5;
  }
  .qr {
    width: 100%;
    max-width: 240px;
    height: auto;
    aspect-ratio: 1;
  }
}

/* Movimento reduzido: tudo já no lugar, sem voos nem quiques. */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    transition-duration: 0.01ms !important;
  }
  .js [data-reveal],
  .js .scene .tb,
  .js .scene .wd {
    opacity: 1;
    transform: none;
  }
}