/* ==========================================================================
   Nexus UI v4 — base + componentes
   Depende de tokens.css (carregue antes). Sem build, sem CDN, sem terceiros.
   Prefixo .nx-* em tudo para não colidir com Tailwind ou CSS do cliente.
   ========================================================================== */

@layer nx-reset, nx-base, nx-components, nx-utilities;

/* -------------------------------------------------------------------------- */
@layer nx-reset {
  *, *::before, *::after { box-sizing: border-box; }
  * { margin: 0; }
  html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
  img, picture, video, canvas { display: block; max-width: 100%; height: auto; }
  svg { flex-shrink: 0; }
  input, button, textarea, select { font: inherit; color: inherit; letter-spacing: inherit; }
  button { cursor: pointer; }
  ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
  :where(h1, h2, h3, h4, p, li, figcaption) { overflow-wrap: break-word; }
}

/* -------------------------------------------------------------------------- */
@layer nx-base {
  html {
    /* Elementos focados nunca ficam escondidos atrás do header fixo nem do
       banner de cookies (WCAG 2.4.11 — Focus Not Obscured). */
    scroll-padding-top: calc(var(--nx-header-h, 4.5rem) + var(--nx-space-4));
    scroll-padding-bottom: calc(var(--nx-consent-h, 0px) + var(--nx-space-4));
  }
  @media (prefers-reduced-motion: no-preference) {
    html { scroll-behavior: smooth; }
  }

  body {
    min-height: 100vh;
    min-height: 100dvh;
    background-color: var(--nx-bg);
    color: var(--nx-text);
    font-family: var(--nx-font-sans);
    font-size: var(--nx-text-base);
    line-height: var(--nx-leading-normal);
    /* Enquanto o banner de cookies está aberto, reserva o espaço dele no fim da página:
       o rodapé nunca fica escondido embaixo do banner (WCAG 2.4.11). */
    padding-bottom: var(--nx-consent-h, 0px);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  h1, h2, h3, h4 {
    font-family: var(--nx-font-display);
    font-weight: 600;
    line-height: var(--nx-leading-tight);
    letter-spacing: var(--nx-tracking-display);
    text-wrap: balance;
  }
  h1 { font-size: var(--nx-text-5xl); font-weight: 700; }
  h2 { font-size: var(--nx-text-4xl); }
  h3 { font-size: var(--nx-text-xl); line-height: var(--nx-leading-snug); letter-spacing: -0.01em; }
  p { text-wrap: pretty; }

  /* Links no corpo do texto são sublinhados: cor sozinha não basta (WCAG 1.4.1). */
  a {
    color: var(--nx-link);
    text-decoration-line: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.2em;
    transition: color var(--nx-dur-fast) var(--nx-ease-out);
  }
  a:hover { color: var(--nx-link-hover); }

  /* Foco visível e consistente em tudo que é interativo (WCAG 2.4.7). */
  :focus-visible {
    outline: var(--nx-focus-width) solid var(--nx-focus);
    outline-offset: var(--nx-focus-offset);
  }

  /* Contêineres que recebem foco por script/âncora (ex.: <main tabindex="-1">) não ganham anel. */
  [tabindex="-1"]:focus { outline: none; }

  ::selection { background: rgb(99 102 241 / 0.4); color: var(--nx-text); }

  [hidden] { display: none !important; }

  /* Movimento reduzido: neutraliza qualquer transição/animação residual. */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }
}

/* -------------------------------------------------------------------------- */
@layer nx-components {

  /* ---- Layout ------------------------------------------------------------ */
  .nx-container {
    width: min(100% - 2 * var(--nx-gutter), var(--nx-container));
    margin-inline: auto;
  }
  .nx-container--narrow { width: min(100% - 2 * var(--nx-gutter), var(--nx-container-narrow)); }
  .nx-section { padding-block: var(--nx-section-y); }
  .nx-section--bordered { border-top: 1px solid var(--nx-border-subtle); }
  .nx-section__head { display: grid; gap: var(--nx-space-4); max-width: 42rem; margin-bottom: var(--nx-space-12); }
  .nx-section__head--center { margin-inline: auto; text-align: center; justify-items: center; }

  .nx-grid {
    display: grid;
    gap: var(--nx-space-6);
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  }
  /* minmax(0, 1fr): impede que um texto longo (ou um placeholder) alargue a coluna
     além da tela — sem isso, o mínimo de uma trilha "1fr" é o min-content do conteúdo. */
  .nx-split {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--nx-space-12);
    align-items: start;
  }
  @media (min-width: 56rem) {
    .nx-split { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--nx-space-16); }
  }

  /* ---- Tipografia -------------------------------------------------------- */
  .nx-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--nx-space-2);
    font-size: var(--nx-text-xs);
    font-weight: 600;
    letter-spacing: var(--nx-tracking-eyebrow);
    text-transform: uppercase;
    color: var(--nx-text-secondary);
  }
  .nx-eyebrow::before {
    content: "";
    width: 0.375rem;
    height: 0.375rem;
    border-radius: var(--nx-radius-full);
    background: var(--nx-accent);
    box-shadow: 0 0 12px var(--nx-accent);
  }
  .nx-lead {
    font-size: var(--nx-text-lg);
    color: var(--nx-text-secondary);
    max-width: 38rem;
  }
  .nx-text-gradient {
    background: linear-gradient(180deg, var(--nx-text) 30%, var(--nx-text-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  @media (forced-colors: active) {
    .nx-text-gradient { background: none; color: CanvasText; }
  }
  .nx-prose { max-width: 68ch; }
  .nx-prose > * + * { margin-top: var(--nx-space-4); }
  .nx-prose h2 { font-size: var(--nx-text-2xl); margin-top: var(--nx-space-12); }
  .nx-prose h3 { margin-top: var(--nx-space-8); }
  .nx-prose ul, .nx-prose ol { padding-left: var(--nx-space-6); }
  .nx-prose li + li { margin-top: var(--nx-space-2); }
  .nx-prose table { width: 100%; border-collapse: collapse; font-size: var(--nx-text-sm); }
  .nx-prose th, .nx-prose td { text-align: left; padding: var(--nx-space-3); border-bottom: 1px solid var(--nx-border-subtle); vertical-align: top; }
  .nx-prose th { color: var(--nx-text); font-weight: 600; }
  .nx-table-wrap { overflow-x: auto; }

  /* ---- Superfícies ------------------------------------------------------- */
  .nx-glass {
    background: var(--nx-glass-bg);
    -webkit-backdrop-filter: blur(var(--nx-blur)) saturate(140%);
    backdrop-filter: blur(var(--nx-blur)) saturate(140%);
    border: 1px solid var(--nx-border-subtle);
    transition: border-color var(--nx-dur-base) var(--nx-ease-out),
                background-color var(--nx-dur-base) var(--nx-ease-out);
  }
  /* Desfoque real só onde há conteúdo passando por trás (header fixo). Cards, depoimentos e CTA
     ficam sobre o fundo liso: o blur não muda nada na tela e custa GPU em celular modesto. */
  .nx-card.nx-glass, .nx-quote.nx-glass, .nx-cta.nx-glass {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
  @supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .nx-glass { background: var(--nx-surface); }
  }
  @media (prefers-reduced-transparency: reduce) {
    .nx-glass { background: var(--nx-surface); -webkit-backdrop-filter: none; backdrop-filter: none; }
  }

  .nx-card {
    display: grid;
    gap: var(--nx-space-3);
    align-content: start;
    padding: var(--nx-space-8);
    border-radius: var(--nx-radius-lg);
  }
  .nx-card:hover { border-color: var(--nx-border-strong); }
  .nx-card p { color: var(--nx-text-secondary); }

  .nx-icon-box {
    display: grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;
    margin-bottom: var(--nx-space-2);
    border-radius: var(--nx-radius-md);
    border: 1px solid var(--nx-border-subtle);
    background: var(--nx-glow);
    color: var(--nx-link);
  }

  /* ---- Botões ------------------------------------------------------------
     <button> para ações, <a> para navegação. Nunca <div> clicável. */
  .nx-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--nx-space-2);
    min-height: var(--nx-target-min);
    padding: 0 var(--nx-space-5);
    border: 1px solid transparent;
    border-radius: var(--nx-radius-md);
    font-size: var(--nx-text-base);
    font-weight: 500;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    text-wrap: balance;          /* quebra em telas estreitas em vez de vazar (WCAG 1.4.10) */
    max-width: 100%;
    color: var(--nx-text);
    background: transparent;
    transition: background-color var(--nx-dur-fast) var(--nx-ease-out),
                border-color var(--nx-dur-fast) var(--nx-ease-out),
                color var(--nx-dur-fast) var(--nx-ease-out),
                box-shadow var(--nx-dur-base) var(--nx-ease-out),
                transform var(--nx-dur-base) var(--nx-ease-out);
  }
  .nx-btn:hover { color: var(--nx-text); }
  .nx-btn:active { transform: translateY(1px); }
  .nx-btn:disabled, .nx-btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; transform: none; }
  .nx-btn svg { width: 1.125rem; height: 1.125rem; }

  .nx-btn--primary {
    background: var(--nx-action);
    color: var(--nx-on-action);
    box-shadow: var(--nx-highlight);
  }
  .nx-btn--primary:hover {
    background: var(--nx-action-hover);
    color: var(--nx-on-action);
    box-shadow: var(--nx-highlight), var(--nx-shadow-glow);
  }
  @media (hover: hover) and (prefers-reduced-motion: no-preference) {
    .nx-btn--primary:hover { transform: translateY(-1px); }
    .nx-btn--primary:hover svg { transform: translateX(2px); }
    .nx-btn svg { transition: transform var(--nx-dur-base) var(--nx-ease-out); }
  }

  .nx-btn--secondary { border-color: var(--nx-border-strong); }
  .nx-btn--secondary:hover { background: var(--nx-surface-hover); }

  .nx-btn--ghost { color: var(--nx-text-secondary); }
  .nx-btn--ghost:hover { background: var(--nx-surface); }

  /* Botões de escolha com o MESMO destaque (aceitar = rejeitar, Guia ANPD). */
  .nx-btn--choice {
    background: var(--nx-surface-hover);
    border-color: var(--nx-border-strong);
  }
  .nx-btn--choice:hover { background: var(--nx-surface); border-color: var(--nx-text-secondary); }

  .nx-btn--lg { min-height: 3.25rem; padding: 0 var(--nx-space-6); font-size: var(--nx-text-lg); }
  .nx-btn--block { width: 100%; }
  /* Só ícone: exige aria-label no HTML. */
  .nx-btn--icon { width: var(--nx-target-min); padding: 0; }

  /* ---- Badges ------------------------------------------------------------ */
  .nx-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--nx-space-2);
    padding: var(--nx-space-1) var(--nx-space-3);
    border: 1px solid var(--nx-border-strong);
    border-radius: var(--nx-radius-full);
    background: var(--nx-glass-bg);
    font-size: var(--nx-text-sm);
    color: var(--nx-text-secondary);
    max-width: 100%;
    text-wrap: balance;
  }

  /* ---- Formulários ------------------------------------------------------- */
  .nx-form { display: grid; gap: var(--nx-space-5); }
  .nx-form__legend { font-size: var(--nx-text-sm); color: var(--nx-text-secondary); }
  .nx-field { display: grid; gap: var(--nx-space-2); }
  .nx-label { font-weight: 500; font-size: var(--nx-text-sm); color: var(--nx-text); }
  .nx-req { color: var(--nx-danger); margin-left: 0.125rem; }
  .nx-hint { font-size: var(--nx-text-sm); color: var(--nx-text-muted); }

  .nx-input, .nx-textarea, .nx-select {
    width: 100%;
    min-height: var(--nx-target-min);
    padding: var(--nx-space-3) var(--nx-space-4);
    border: 1px solid var(--nx-border-control);
    border-radius: var(--nx-radius-md);
    background: var(--nx-bg);
    color: var(--nx-text);
    transition: border-color var(--nx-dur-fast) var(--nx-ease-out);
  }
  .nx-textarea { min-height: 8rem; resize: vertical; }
  .nx-input::placeholder, .nx-textarea::placeholder { color: var(--nx-text-muted); opacity: 1; }
  .nx-input:hover, .nx-textarea:hover, .nx-select:hover { border-color: var(--nx-text-secondary); }
  .nx-input:focus-visible, .nx-textarea:focus-visible, .nx-select:focus-visible {
    border-color: var(--nx-focus);
    outline-offset: 1px;
  }
  .nx-input[aria-invalid="true"], .nx-textarea[aria-invalid="true"], .nx-select[aria-invalid="true"] {
    border-color: var(--nx-danger);
  }

  .nx-error {
    display: flex;
    gap: var(--nx-space-2);
    align-items: flex-start;
    font-size: var(--nx-text-sm);
    color: var(--nx-danger);
  }
  .nx-error:empty { display: none; }
  .nx-error::before { content: "!"; display: inline-grid; place-items: center; flex: none; width: 1.125rem; height: 1.125rem; margin-top: 0.1em; border-radius: var(--nx-radius-full); background: var(--nx-danger); color: var(--nx-bg); font-size: 0.75rem; font-weight: 700; }

  .nx-check {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: var(--nx-space-3);
    align-items: start;
    font-size: var(--nx-text-sm);
    color: var(--nx-text-secondary);
  }
  .nx-check input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.125rem;
    accent-color: var(--nx-link);   /* --nx-action ficaria ~2,8:1 sobre a superfície (WCAG 1.4.11) */
    cursor: pointer;
  }
  .nx-check label { cursor: pointer; }
  .nx-check .nx-error { grid-column: 2; }

  /* Interruptor acessível: <input type="checkbox" role="switch" class="nx-switch"> */
  .nx-switch {
    -webkit-appearance: none;
    appearance: none;
    position: relative;
    flex: none;
    width: 2.75rem;
    height: 1.5rem;
    border: 1px solid var(--nx-border-control);
    border-radius: var(--nx-radius-full);
    background: var(--nx-bg);
    cursor: pointer;
    transition: background-color var(--nx-dur-fast) var(--nx-ease-out), border-color var(--nx-dur-fast) var(--nx-ease-out);
  }
  .nx-switch::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0.1875rem;
    width: 1rem;
    height: 1rem;
    border-radius: var(--nx-radius-full);
    background: var(--nx-text-secondary);
    transform: translateY(-50%);
    transition: transform var(--nx-dur-base) var(--nx-ease-out), background-color var(--nx-dur-fast) var(--nx-ease-out);
  }
  /* Borda clara no estado ligado: o trilho índigo sozinho fica abaixo de 3:1 sobre a superfície. */
  .nx-switch:checked { background: var(--nx-action); border-color: var(--nx-focus); }
  .nx-switch:checked::before { background: var(--nx-on-action); transform: translate(1.25rem, -50%); }
  @media (forced-colors: active) {
    .nx-switch::before { background: ButtonText; }
    .nx-switch:checked { background: Highlight; }
    .nx-switch:checked::before { background: HighlightText; }
  }

  .nx-form-status { font-size: var(--nx-text-sm); color: var(--nx-text-secondary); }
  .nx-form-status:empty { display: none; }
  .nx-form-status[data-tone="success"] { color: var(--nx-success); }
  .nx-form-status[data-tone="error"] { color: var(--nx-danger); }

  /* Honeypot antispam: fora da tela e fora da árvore de acessibilidade. */
  .nx-hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

  /* ---- Skip link --------------------------------------------------------- */
  .nx-skip {
    position: fixed;
    left: var(--nx-space-4);
    top: var(--nx-space-4);
    z-index: var(--nx-z-skip);
    padding: var(--nx-space-3) var(--nx-space-5);
    border-radius: var(--nx-radius-md);
    background: var(--nx-action);
    color: var(--nx-on-action);
    font-weight: 600;
    text-decoration: none;
    transform: translateY(-200%);
  }
  .nx-skip:focus-visible { transform: none; color: var(--nx-on-action); }

  /* ---- Header ------------------------------------------------------------ */
  .nx-header {
    position: sticky;
    top: 0;
    z-index: var(--nx-z-header);
    border-width: 0 0 1px;
  }
  .nx-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--nx-space-6);
    min-height: 4.5rem;
    flex-wrap: wrap;
  }
  .nx-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--nx-space-2);
    min-height: var(--nx-target-min);
    font-family: var(--nx-font-display);
    font-weight: 700;
    font-size: var(--nx-text-lg);
    letter-spacing: -0.02em;
    color: var(--nx-text);
    text-decoration: none;
  }
  .nx-logo:hover { color: var(--nx-text); }
  .nx-logo__mark {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: var(--nx-radius-sm);
    background: linear-gradient(135deg, var(--nx-accent), var(--nx-action-hover));
    box-shadow: var(--nx-highlight);
  }
  .nx-nav__list { display: flex; flex-wrap: wrap; align-items: center; gap: var(--nx-space-1); list-style: none; padding: 0; }
  .nx-nav__link {
    display: inline-flex;
    align-items: center;
    min-height: var(--nx-target-min);
    padding: 0 var(--nx-space-3);
    border-radius: var(--nx-radius-sm);
    color: var(--nx-text-secondary);
    font-size: var(--nx-text-sm);
    font-weight: 500;
    text-decoration: none;
  }
  .nx-nav__link:hover, .nx-nav__link[aria-current="page"] { color: var(--nx-text); }
  /* Página atual marcada também por sublinhado, não só por cor (WCAG 1.4.1). */
  .nx-nav__link[aria-current="page"] { text-decoration: underline; text-underline-offset: 0.4em; text-decoration-thickness: 2px; }
  .nx-nav__cta { margin-left: var(--nx-space-2); }

  .nx-menu-toggle { display: none; }
  .nx-menu-toggle .nx-icon-close { display: none; }
  .nx-menu-toggle[aria-expanded="true"] .nx-icon-open { display: none; }
  .nx-menu-toggle[aria-expanded="true"] .nx-icon-close { display: block; }

  /* Menu recolhível só existe quando o JS está ativo (sem JS, o menu aparece aberto). */
  @media (max-width: 47.99rem) {
    .nx-header[data-menu-ready] .nx-menu-toggle { display: inline-flex; }
    .nx-header[data-menu-ready] .nx-nav { display: none; flex-basis: 100%; padding-bottom: var(--nx-space-4); }
    /* Menu aberto rola por dentro: em zoom 400% ou celular deitado, nenhum item fica inalcançável. */
    .nx-header[data-menu-ready][data-menu-open] .nx-nav {
      display: block;
      max-height: calc(100dvh - 4.5rem);
      overflow-y: auto;
      overscroll-behavior: contain;
    }
    .nx-header[data-menu-ready] .nx-nav__list { flex-direction: column; align-items: stretch; }
    .nx-header[data-menu-ready] .nx-nav__cta { margin: var(--nx-space-2) 0 0; }
    .nx-header[data-menu-ready] .nx-nav__cta .nx-btn { width: 100%; }
  }

  /* ---- Hero -------------------------------------------------------------- */
  .nx-hero {
    position: relative;
    isolation: isolate;
    overflow: clip;
    padding-block: clamp(5rem, 3rem + 9vw, 10rem) var(--nx-section-y);
  }
  .nx-hero::before, .nx-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;
  }
  .nx-hero::before {
    background: radial-gradient(60% 55% at 50% 0%, var(--nx-glow), transparent 70%);
  }
  .nx-hero::after {
    background-image:
      linear-gradient(var(--nx-grid-line) 1px, transparent 1px),
      linear-gradient(90deg, var(--nx-grid-line) 1px, transparent 1px);
    background-size: 64px 64px;
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 30%, transparent 75%);
    mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 30%, transparent 75%);
  }
  .nx-hero__content { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--nx-space-6); justify-items: center; text-align: center; }
  .nx-hero__content .nx-lead { margin-inline: auto; }
  .nx-hero__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--nx-space-3); margin-top: var(--nx-space-2); }
  .nx-hero__note { font-size: var(--nx-text-sm); color: var(--nx-text-muted); }

  /* ---- Passos ------------------------------------------------------------ */
  .nx-steps { display: grid; gap: var(--nx-space-6); counter-reset: nx-step; list-style: none; padding: 0; }
  @media (min-width: 56rem) { .nx-steps { grid-template-columns: repeat(3, 1fr); } }
  .nx-steps > li { counter-increment: nx-step; display: grid; gap: var(--nx-space-3); padding-top: var(--nx-space-6); border-top: 1px solid var(--nx-border-strong); }
  .nx-steps > li::before {
    content: counter(nx-step, decimal-leading-zero);
    font-family: var(--nx-font-display);
    font-size: var(--nx-text-sm);
    font-weight: 600;
    color: var(--nx-link);
  }
  .nx-steps p { color: var(--nx-text-secondary); }

  /* ---- Depoimentos (só reais e autorizados) ----------------------------- */
  .nx-quote { display: grid; gap: var(--nx-space-6); align-content: space-between; padding: var(--nx-space-8); border-radius: var(--nx-radius-lg); }
  .nx-quote blockquote { font-size: var(--nx-text-lg); line-height: var(--nx-leading-snug); color: var(--nx-text); }
  .nx-quote figcaption { display: flex; align-items: center; gap: var(--nx-space-3); font-size: var(--nx-text-sm); color: var(--nx-text-secondary); }
  .nx-quote__avatar { width: 2.5rem; height: 2.5rem; border-radius: var(--nx-radius-full); background: var(--nx-surface-hover); border: 1px solid var(--nx-border-subtle); object-fit: cover; }
  .nx-quote cite { display: block; font-style: normal; font-weight: 600; color: var(--nx-text); }

  /* Marca visual de conteúdo pendente — impossível confundir com conteúdo real. */
  .nx-placeholder {
    display: grid;
    place-items: center;
    gap: var(--nx-space-2);
    padding: var(--nx-space-6);
    border: 1px dashed var(--nx-border-control);
    border-radius: var(--nx-radius-lg);
    background: repeating-linear-gradient(135deg, transparent 0 12px, var(--nx-grid-line) 12px 24px);
    color: var(--nx-text-muted);
    font-size: var(--nx-text-sm);
    text-align: center;
  }
  .nx-media { aspect-ratio: 16 / 9; border-radius: var(--nx-radius-lg); overflow: hidden; }
  .nx-media > img, .nx-media > iframe, .nx-media > video { width: 100%; height: 100%; object-fit: cover; border: 0; }

  /* ---- FAQ (details/summary nativo: teclado e leitor de tela de graça) --- */
  .nx-faq { border-top: 1px solid var(--nx-border-subtle); }
  .nx-faq details { border-bottom: 1px solid var(--nx-border-subtle); }
  .nx-faq summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--nx-space-4);
    min-height: var(--nx-target-min);
    padding-block: var(--nx-space-5);
    font-weight: 500;
    cursor: pointer;
    list-style: none;
  }
  .nx-faq summary::-webkit-details-marker { display: none; }
  .nx-faq summary svg { color: var(--nx-text-secondary); transition: transform var(--nx-dur-base) var(--nx-ease-out); }
  .nx-faq details[open] summary svg { transform: rotate(180deg); }
  .nx-faq details > div { padding-bottom: var(--nx-space-6); color: var(--nx-text-secondary); max-width: 62ch; }

  /* ---- CTA --------------------------------------------------------------- */
  .nx-cta {
    position: relative;
    /* clip (e não só hidden): o brilho do ::before transborda e, com hidden, o foco
       num campo do formulário rolava o bloco na horizontal. clip não é rolável. */
    overflow: hidden;
    overflow: clip;
    isolation: isolate;
    display: grid;
    gap: var(--nx-space-8);
    padding: clamp(var(--nx-space-8), 4vw, var(--nx-space-16));
    border-radius: var(--nx-radius-xl);
  }
  .nx-cta::before {
    content: "";
    position: absolute;
    inset: auto -20% -60% -20%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(50% 50% at 50% 50%, var(--nx-glow), transparent 70%);
    pointer-events: none;
  }

  /* ---- Alertas ----------------------------------------------------------- */
  .nx-alert { padding: var(--nx-space-4) var(--nx-space-5); border: 1px solid var(--nx-border-strong); border-left-width: 3px; border-radius: var(--nx-radius-md); background: var(--nx-surface); font-size: var(--nx-text-sm); color: var(--nx-text-secondary); }
  .nx-alert--warning { border-left-color: var(--nx-warning); }
  .nx-alert--success { border-left-color: var(--nx-success); }
  .nx-alert strong { color: var(--nx-text); }

  /* ---- Abas (padrão ARIA tabs) --------------------------------------------
     <div data-nx-tabs> + [role="tablist"] com <button role="tab" aria-controls>.
     O nexus.js cuida de setas/Home/End, tabindex e hidden dos painéis, e dispara
     "nx:tabchange" (detail.value = data-value da aba) para o site reagir.
     Aba ativa: fundo + borda + realce (não só cor, WCAG 1.4.1). */
  .nx-tabs { display: grid; gap: var(--nx-space-8); }
  .nx-tabs__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--nx-space-1);
    width: fit-content;
    max-width: 100%;
    padding: var(--nx-space-1);
    border: 1px solid var(--nx-border-subtle);
    border-radius: var(--nx-radius-xl);
    background: var(--nx-glass-bg);
  }
  .nx-tabs__list--center { margin-inline: auto; justify-content: center; }
  .nx-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--nx-space-2);
    min-height: var(--nx-target-min);
    padding: 0 var(--nx-space-5);
    border: 1px solid transparent;
    border-radius: var(--nx-radius-lg);
    background: transparent;
    color: var(--nx-text-secondary);
    font-size: var(--nx-text-sm);
    font-weight: 600;
    transition: background-color var(--nx-dur-base) var(--nx-ease-out),
                border-color var(--nx-dur-base) var(--nx-ease-out),
                color var(--nx-dur-fast) var(--nx-ease-out),
                box-shadow var(--nx-dur-base) var(--nx-ease-out);
  }
  .nx-tab:hover { color: var(--nx-text); }
  .nx-tab[aria-selected="true"] {
    background: var(--nx-surface-hover);
    border-color: var(--nx-border-strong);
    color: var(--nx-text);
    box-shadow: var(--nx-highlight), var(--nx-shadow-glow);
  }
  .nx-tab svg { width: 1.125rem; height: 1.125rem; }
  @media (forced-colors: active) {
    .nx-tab[aria-selected="true"] { border-color: Highlight; outline: 2px solid Highlight; }
  }

  /* ---- Oferta (card de kit/plano com preço) -------------------------------
     Preço à vista em destaque e legível (Lei 10.962/2004: fonte ≥ 12 no e-commerce).
     .nx-offer--featured: o recomendado; .nx-offer__flag diz POR QUÊ em texto. */
  .nx-offer {
    position: relative;
    display: grid;
    gap: var(--nx-space-4);
    align-content: start;
    justify-items: center;
    padding: var(--nx-space-10) var(--nx-space-6) var(--nx-space-8);
    border-radius: var(--nx-radius-xl);
    text-align: center;
    transition: transform var(--nx-dur-slow) var(--nx-ease-out),
                border-color var(--nx-dur-base) var(--nx-ease-out),
                box-shadow var(--nx-dur-base) var(--nx-ease-out);
  }
  .nx-offer__name { font-size: var(--nx-text-xl); }
  .nx-offer__media { width: min(100%, 11rem); aspect-ratio: 1; object-fit: contain; }
  .nx-offer__price {
    display: grid;
    gap: var(--nx-space-1);
    font-family: var(--nx-font-display);
    font-size: var(--nx-text-4xl);
    font-weight: 700;
    line-height: var(--nx-leading-tight);
    color: var(--nx-text);
  }
  .nx-offer__price small { font-family: var(--nx-font-sans); font-size: var(--nx-text-sm); font-weight: 500; color: var(--nx-text-secondary); }
  .nx-offer__terms { font-size: var(--nx-text-sm); color: var(--nx-text-secondary); }
  .nx-offer .nx-btn { width: 100%; }
  .nx-offer--featured { border-color: var(--nx-accent); box-shadow: var(--nx-highlight), var(--nx-shadow-glow); }
  .nx-offer__flag {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: var(--nx-space-1) var(--nx-space-4);
    border-radius: var(--nx-radius-full);
    background: var(--nx-action);
    color: var(--nx-on-action);
    font-size: var(--nx-text-xs);
    font-weight: 700;
    letter-spacing: var(--nx-tracking-eyebrow);
    text-transform: uppercase;
    white-space: nowrap;
  }
  @media (hover: hover) and (prefers-reduced-motion: no-preference) {
    .nx-offer:hover { transform: translateY(-0.25rem); border-color: var(--nx-border-strong); }
    .nx-offer--featured:hover { border-color: var(--nx-accent); }
  }

  /* ---- Vídeo próprio ---------------------------------------------------------
     <video controls preload="none" poster> auto-hospedado: nada baixa nem toca até o clique
     (sem autoplay, WCAG 1.4.2/2.2.2). Vídeo com fala precisa de legenda (<track kind="captions">). */
  .nx-video { display: grid; gap: var(--nx-space-3); justify-items: center; }
  .nx-video video {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 1px solid var(--nx-border-subtle);
    border-radius: var(--nx-radius-lg);
    background: var(--nx-surface);
    object-fit: cover;
  }
  .nx-video--portrait video { aspect-ratio: 9 / 16; width: min(100%, 22rem); max-height: 80vh; }
  .nx-video figcaption { font-size: var(--nx-text-sm); color: var(--nx-text-secondary); text-align: center; max-width: 40ch; }

  /* ---- Footer ------------------------------------------------------------ */
  .nx-footer {
    padding-block: var(--nx-space-16) var(--nx-space-8);
    border-top: 1px solid var(--nx-border-subtle);
    font-size: var(--nx-text-sm);
    color: var(--nx-text-secondary);
  }
  .nx-footer { overflow-wrap: anywhere; }   /* e-mails e URLs longos não vazam */
  .nx-footer__grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--nx-space-10); }
  @media (min-width: 48rem) { .nx-footer__grid { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr); } }
  .nx-footer h2 { font-family: var(--nx-font-sans); font-size: var(--nx-text-sm); font-weight: 600; letter-spacing: 0; color: var(--nx-text); margin-bottom: var(--nx-space-3); }
  .nx-footer ul { list-style: none; padding: 0; display: grid; gap: var(--nx-space-1); }
  .nx-footer address { font-style: normal; display: grid; gap: var(--nx-space-1); }
  .nx-footer a, .nx-linklike {
    display: inline-flex;
    align-items: center;
    min-height: 1.75rem;          /* alvo ≥ 24px (WCAG 2.5.8) */
    color: var(--nx-text-secondary);
    text-decoration: underline;
    text-decoration-color: var(--nx-border-strong);
    text-underline-offset: 0.25em;
  }
  .nx-footer a:hover, .nx-linklike:hover { color: var(--nx-text); text-decoration-color: currentColor; }
  .nx-linklike { padding: 0; border: 0; background: none; font: inherit; cursor: pointer; text-align: left; }
  /* Dentro de um parágrafo, o botão-link se comporta como link de texto (cor e sublinhado de link). */
  .nx-prose .nx-linklike, p > .nx-linklike {
    display: inline;
    min-height: 0;
    color: var(--nx-link);
    text-decoration-color: currentColor;
  }
  .nx-prose .nx-linklike:hover, p > .nx-linklike:hover { color: var(--nx-link-hover); }
  .nx-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--nx-space-4);
    margin-top: var(--nx-space-12);
    padding-top: var(--nx-space-6);
    border-top: 1px solid var(--nx-border-subtle);
    color: var(--nx-text-muted);
  }

  /* ---- Banner de cookies -------------------------------------------------- */
  .nx-consent {
    position: fixed;
    z-index: var(--nx-z-banner);
    left: 50%;
    bottom: var(--nx-gutter);
    width: min(100% - 2 * var(--nx-gutter), 60rem);
    max-height: min(70vh, 32rem);
    overflow-y: auto;
    display: grid;
    gap: var(--nx-space-5);
    padding: var(--nx-space-6);
    border: 1px solid var(--nx-border-strong);
    border-radius: var(--nx-radius-lg);
    background: var(--nx-glass-bg-strong);
    -webkit-backdrop-filter: blur(var(--nx-blur));
    backdrop-filter: blur(var(--nx-blur));
    color: var(--nx-text-secondary);
    font-size: var(--nx-text-sm);
    transform: translateX(-50%);
    animation: nx-rise var(--nx-dur-slow) var(--nx-ease-out) both;
  }
  @media (min-width: 56rem) {
    .nx-consent { grid-template-columns: 1fr auto; align-items: center; gap: var(--nx-space-8); }
  }
  .nx-consent__title { font-family: var(--nx-font-sans); font-size: var(--nx-text-base); font-weight: 600; letter-spacing: 0; color: var(--nx-text); margin-bottom: var(--nx-space-1); }
  .nx-consent__actions { display: flex; flex-wrap: wrap; gap: var(--nx-space-3); }
  .nx-consent__actions .nx-btn { flex: 1 1 auto; }
  @media (max-width: 30rem) {
    .nx-consent { bottom: 0; width: 100%; border-radius: var(--nx-radius-lg) var(--nx-radius-lg) 0 0; border-width: 1px 0 0; }
  }

  @keyframes nx-rise {
    from { opacity: 0; transform: translate(-50%, var(--nx-reveal-distance)); }
    to { opacity: 1; transform: translate(-50%, 0); }
  }

  /* ---- Dialog (preferências) -------------------------------------------- */
  .nx-dialog {
    width: min(100% - 2rem, 36rem);
    max-height: min(88dvh, 46rem);
    margin: auto;
    padding: 0;
    border: 1px solid var(--nx-border-strong);
    border-radius: var(--nx-radius-xl);
    background: var(--nx-surface);
    color: var(--nx-text);
    overflow: hidden;
  }
  .nx-dialog[open] { display: flex; flex-direction: column; animation: nx-pop var(--nx-dur-base) var(--nx-ease-out); }
  .nx-dialog::backdrop { background: rgb(0 0 0 / 0.6); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
  .nx-dialog__header { display: flex; align-items: center; justify-content: space-between; gap: var(--nx-space-4); padding: var(--nx-space-4) var(--nx-space-4) var(--nx-space-4) var(--nx-space-6); border-bottom: 1px solid var(--nx-border-subtle); }
  .nx-dialog__header h2 { font-size: var(--nx-text-xl); font-family: var(--nx-font-sans); letter-spacing: -0.01em; }
  .nx-dialog__body { overflow-y: auto; padding: var(--nx-space-6); display: grid; gap: var(--nx-space-2); font-size: var(--nx-text-sm); color: var(--nx-text-secondary); }
  .nx-dialog__footer { display: flex; flex-wrap: wrap; gap: var(--nx-space-3); padding: var(--nx-space-4) var(--nx-space-6); border-top: 1px solid var(--nx-border-subtle); }
  .nx-dialog__footer .nx-btn { flex: 1 1 auto; }

  /* Altura baixa (zoom 400%, celular deitado): o diálogo inteiro rola, em vez de espremer o corpo
     entre cabeçalho e rodapé fixos até sumir (WCAG 1.4.10). O banner também encolhe. */
  @media (max-height: 40rem) {
    .nx-dialog { max-height: calc(100dvh - 1rem); overflow-y: auto; }
    .nx-dialog[open] { display: block; }
    .nx-dialog__body { overflow: visible; }
    .nx-consent { max-height: 55dvh; padding: var(--nx-space-4); gap: var(--nx-space-3); }
  }

  .nx-pref { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--nx-space-1) var(--nx-space-6); align-items: start; padding-block: var(--nx-space-4); border-top: 1px solid var(--nx-border-subtle); }
  .nx-pref__label { font-size: var(--nx-text-base); font-weight: 600; color: var(--nx-text); cursor: pointer; }
  .nx-pref__desc { grid-column: 1; }
  .nx-pref > :last-child:not(.nx-pref__desc) { grid-column: 2; grid-row: 1 / span 2; align-self: center; }

  @keyframes nx-pop {
    from { opacity: 0; transform: translateY(0.5rem) scale(0.98); }
    to { opacity: 1; transform: none; }
  }

  /* ---- Revelação ao rolar ---------------------------------------------------
     Só "arma" quando o JS confirma movimento permitido; sem JS, tudo aparece. */
  [data-reveal] {
    transition: opacity var(--nx-dur-reveal) var(--nx-ease-out),
                transform var(--nx-dur-reveal) var(--nx-ease-out);
  }
  .nx-reveal-armed [data-reveal]:not(.is-visible) {
    opacity: 0;
    transform: translateY(var(--nx-reveal-distance));
  }
  /* Card de vidro que também revela: mantém a transição de borda/fundo do hover. */
  .nx-glass[data-reveal] {
    transition: opacity var(--nx-dur-reveal) var(--nx-ease-out),
                transform var(--nx-dur-reveal) var(--nx-ease-out),
                border-color var(--nx-dur-base) var(--nx-ease-out),
                background-color var(--nx-dur-base) var(--nx-ease-out);
    /* atraso só na revelação (opacity/transform); hover responde na hora */
    transition-delay: var(--nx-reveal-delay, 0ms), var(--nx-reveal-delay, 0ms), 0ms, 0ms;
  }
  [data-reveal-delay="1"] { --nx-reveal-delay: 80ms; transition-delay: 80ms; }
  [data-reveal-delay="2"] { --nx-reveal-delay: 160ms; transition-delay: 160ms; }
  [data-reveal-delay="3"] { --nx-reveal-delay: 240ms; transition-delay: 240ms; }

  /* ---- Entrada do hero (CSS puro: não depende de JS) ----------------------
     data-enter="1..4": aparece com fade + blur, em cascata (selo, botões, nota).
     data-enter="text": SÓ desliza, visível desde o primeiro quadro — use no h1 e no lead,
     que costumam ser o elemento LCP (texto com opacity 0 não conta para o LCP). */
  @media (prefers-reduced-motion: no-preference) {
    [data-enter] { animation: nx-enter var(--nx-dur-reveal) var(--nx-ease-out) both; }
    [data-enter="1"] { animation-delay: 80ms; }
    [data-enter="2"] { animation-delay: 160ms; }
    [data-enter="3"] { animation-delay: 240ms; }
    [data-enter="4"] { animation-delay: 320ms; }
    [data-enter="text"] { animation-name: nx-enter-text; animation-delay: 0ms; }
  }
  @keyframes nx-enter {
    from { opacity: 0; transform: translateY(var(--nx-reveal-distance)); filter: blur(6px); }
    to { opacity: 1; transform: none; filter: none; }
  }
  @keyframes nx-enter-text {
    from { transform: translateY(calc(var(--nx-reveal-distance) * 0.6)); }
    to { transform: none; }
  }
}

/* -------------------------------------------------------------------------- */
@layer nx-utilities {
  .nx-sr-only {
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
  }
  .nx-stack { display: grid; gap: var(--nx-space-4); }
  .nx-stack-lg { display: grid; gap: var(--nx-space-8); }
  .nx-cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--nx-space-3); }
  .nx-center { text-align: center; }
  .nx-muted { color: var(--nx-text-muted); }
  .nx-secondary { color: var(--nx-text-secondary); }
  .nx-mt-8 { margin-top: var(--nx-space-8); }
  .nx-mt-12 { margin-top: var(--nx-space-12); }
}

/* -------------------------------------------------------------------------- */
@media print {
  .nx-consent, .nx-skip, .nx-menu-toggle, .nx-hero::before, .nx-hero::after { display: none !important; }
  .nx-header { position: static; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  body { background: #fff; color: #000; }
}