:root {
  --paper: #F6F7F5; --surface: #ECEFEB; --ink: #131D2B; --ink-soft: #4E5A68;
  --lab: #2C7D5E; --lab-strong: #1F5F46; --lab-tint: #E1EFE7; --line: #DBE0DA;
  --shadow: rgba(19, 29, 43, 0.14); --focus: #1F5F46;
  --chrome-bg: #FFFFFF; --chrome-ink: #131D2B; --chrome-ink-soft: #4E5A68; --chrome-line: #DDE2DC; --chrome-accent: #1F5F46;
  --font-display: "Newsreader", Georgia, serif;
  --font-body: "IBM Plex Sans", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0C1119; --surface: #131A24; --ink: #E9ECEA; --ink-soft: #9CA8AA;
    --lab: #4FB98B; --lab-strong: #6ED4A8; --lab-tint: #16261F; --line: #263241; --focus: #6ED4A8;
  }
}
:root[data-theme="dark"] {
  --paper: #0C1119; --surface: #131A24; --ink: #E9ECEA; --ink-soft: #9CA8AA;
  --lab: #4FB98B; --lab-strong: #6ED4A8; --lab-tint: #16261F; --line: #263241; --focus: #6ED4A8;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--font-body); font-size: 16px; line-height: 1.6; overflow-x: hidden; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 460; text-wrap: balance; margin: 0; color: var(--ink); }
.eyebrow { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.13em; text-transform: uppercase; color: var(--lab-strong); display: inline-flex; align-items: center; gap: 0.6em; }
.eyebrow::before { content: ""; width: 1.6em; height: 1px; background: currentColor; display: inline-block; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 3rem); }
.rule { border: none; border-top: 1px solid var(--line); margin: 0; }
section { position: relative; }
.section-pad { padding-top: clamp(4.5rem, 10vw, 8rem); padding-bottom: clamp(4.5rem, 10vw, 8rem); }

.brand-logo { display: block; height: 46px; width: auto; }
footer .brand-logo { height: 34px; }

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40; display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem clamp(1.25rem, 4vw, 3rem); background: var(--chrome-bg); border-bottom: 1px solid var(--chrome-line);
  transition: box-shadow .3s ease, transform .35s ease;
}
.nav.scrolled { box-shadow: 0 10px 24px -18px rgba(19,29,43,0.35); }
/* Some completamente depois que a página passa da altura do Hero; só volta no topo. */
.nav.nav-hidden { transform: translateY(-100%); }
.nav .brand-logo { height: var(--nav-logo-h, 46px); }
.nav-links { display: flex; gap: clamp(1rem, 3vw, 2.2rem); font-size: 0.86rem; list-style: none; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; color: var(--chrome-ink-soft); position: relative; padding-bottom: 3px; }
.nav-links a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px; background: var(--chrome-accent); transition: right .3s ease; }
.nav-links a:hover::after { right: 0; }

.nav-toggle {
  display: none; width: 40px; height: 40px; border: 1px solid var(--chrome-line); border-radius: 6px;
  background: transparent; cursor: pointer; padding: 0; position: relative; flex: none;
}
.nav-toggle span {
  position: absolute; left: 50%; top: 50%; width: 18px; height: 2px; background: var(--chrome-ink);
  transform: translate(-50%, -50%); transition: background .25s ease;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--chrome-ink);
  transition: transform .25s ease, top .25s ease;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav.menu-open .nav-toggle span { background: transparent; }
.nav.menu-open .nav-toggle span::before { top: 0; transform: rotate(45deg); }
.nav.menu-open .nav-toggle span::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: flex; flex-direction: column; gap: 0; position: fixed; top: 64px; left: 0; right: 0;
    background: var(--chrome-bg); border-bottom: 1px solid var(--chrome-line);
    max-height: 0; overflow: hidden; transition: max-height .3s ease;
  }
  .nav.menu-open .nav-links { max-height: 80vh; overflow-y: auto; }
  .nav-links li { border-top: 1px solid var(--chrome-line); }
  .nav-links a { display: block; padding: 1rem clamp(1.25rem, 4vw, 3rem); font-size: 0.95rem; }
  .nav-links a::after { display: none; }
}

.hero { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; isolation: isolate; background: #0A1018; }
.hero-bg { position: absolute; inset: 0; z-index: 0; background-size: cover; background-position: 62% 50%; animation: hero-kenburns 26s ease-in-out infinite alternate; }
@keyframes hero-kenburns { from { transform: scale(1); } to { transform: scale(1.09); } }
.hero-scrim { position: absolute; inset: 0; z-index: 1; background: linear-gradient(100deg, rgba(8,13,20,.94) 0%, rgba(8,13,20,.72) 34%, rgba(8,13,20,.32) 62%, rgba(8,13,20,.15) 100%), linear-gradient(0deg, rgba(8,13,20,.55) 0%, transparent 32%); }
.hero-content { position: relative; z-index: 2; max-width: 820px; padding-top: 8rem; padding-bottom: 4rem; }
.hero-content .eyebrow { color: #8FE3C2; }
.hero-content .eyebrow::before { background: #8FE3C2; }
.hero-content h1 { font-size: clamp(2.4rem, 5.4vw, 4.2rem); line-height: 1.06; margin: 1rem 0 1.4rem; color: #F5F7F4; }
.hero-content h1 em { font-style: italic; color: #8FE3C2; }
.hero-lede { max-width: 54ch; color: rgba(245,247,244,.82); font-size: 1.08rem; }
.hero-cta { margin-top: 2rem; display: flex; gap: 1rem; flex-wrap: wrap; }
.hero .btn-primary { background: #F5F7F4; color: #0A1018; }
.hero .btn-primary:hover { background: #8FE3C2; }
.hero .btn-ghost { border-color: rgba(245,247,244,.35); color: #F5F7F4; }

.btn { display: inline-flex; align-items: center; gap: .6em; padding: .85rem 1.5rem; border-radius: 2px; font-weight: 600; font-size: .92rem; text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: transform .25s ease, background .25s ease, color .25s ease, border-color .25s ease; }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { transform: translateY(-2px); background: var(--lab-strong); color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }

.badge-bar-wrap { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
.badge-row { display: flex; flex-wrap: wrap; gap: .9rem 1.4rem; padding-top: 1.5rem; padding-bottom: 1.5rem; align-items: center; justify-content: space-between; }
.badge-label { font-family: var(--font-mono); font-size: .66rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
.badges { display: flex; flex-wrap: wrap; gap: .6rem; }
.badge { font-family: var(--font-mono); font-size: .7rem; padding: .4rem .8rem; border: 1px solid var(--line); border-radius: 100px; color: var(--ink-soft); background: var(--paper); white-space: nowrap; }

.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

.rich-text-body p { max-width: 68ch; color: var(--ink-soft); }
.rich-text-body strong { color: var(--ink); font-weight: 600; }

.cat-grid { display: grid; grid-template-columns: repeat(var(--cols, 3), 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 2.6rem; }
@media (max-width: 980px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cat-grid { grid-template-columns: 1fr; } }
.cat { background: var(--paper); padding: 1.9rem 1.6rem; transition: background .3s ease; }
.cat:hover { background: var(--lab-tint); }
.cat h3 { font-size: 1.05rem; margin-bottom: .5rem; }
.cat p { color: var(--ink-soft); font-size: .88rem; margin: 0; }

.timeline { margin-top: 3rem; }
.step { display: grid; grid-template-columns: 52px 1fr; column-gap: 1.6rem; position: relative; }
.step:not(:last-child) { padding-bottom: 2.2rem; }
.step-marker { position: relative; display: flex; justify-content: center; }
.step-marker::before { content: ""; position: absolute; top: 52px; bottom: -2.2rem; left: 50%; width: 1px; background: var(--line); transform: translateX(-50%); }
.step:last-child .step-marker::before { display: none; }
.step-dot { width: 52px; height: 52px; border-radius: 50%; flex: none; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: .82rem; font-weight: 600; color: var(--ink-soft); background: var(--paper); border: 1px solid var(--line); transition: background .5s ease, color .5s ease, border-color .5s ease, transform .5s ease; }
.step.in .step-dot { background: var(--lab); border-color: var(--lab); color: #fff; transform: scale(1.06); }
.step-body { padding-top: .4rem; }
.step-body h3 { font-size: 1.08rem; margin-bottom: .4rem; }
.step-body p { color: var(--ink-soft); margin: 0; font-size: .9rem; }

.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 3rem; }
@media (max-width: 780px) { .faq-grid { grid-template-columns: 1fr; } }

.chart-block { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,4rem); align-items: center; margin-top: 2rem; }
@media (max-width: 860px) { .chart-block { grid-template-columns: 1fr; } }
.chart-card { background: var(--surface); border: 1px solid var(--line); border-radius: 4px; padding: 1.6rem 1.6rem 1rem; }
.chart-card-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: .8rem; font-family: var(--font-mono); font-size: .7rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .06em; }
.chart-card svg { width: 100%; height: auto; display: block; }
.chart-legend { display: flex; justify-content: space-between; gap: 1.4rem; margin-top: .6rem; font-family: var(--font-mono); font-size: .68rem; color: var(--ink-soft); flex-wrap: wrap; }
.chart-legend .keys { display: flex; gap: 1.4rem; }
.chart-legend span { display: inline-flex; align-items: center; gap: .4rem; }
.chart-legend i { width: 10px; height: 2px; display: inline-block; }
.chart-note { font-style: italic; opacity: .75; }
.stability-path { stroke-dasharray: 620; stroke-dashoffset: 620; transition: stroke-dashoffset 1.6s cubic-bezier(.2,.7,.2,1); }
.chart-card.in .stability-path { stroke-dashoffset: 0; }
.stability-band { opacity: 0; transition: opacity 1.2s ease .4s; }
.chart-card.in .stability-band { opacity: 1; }
.faq-item { background: var(--paper); padding: 2rem 1.9rem; }
.faq-item h3 { font-size: 1rem; margin-bottom: .6rem; font-family: var(--font-body); font-weight: 600; }
.faq-item p { color: var(--ink-soft); font-size: .9rem; margin: 0; }

/* Seção "sempre escura" (independente do tema claro/escuro do sistema) — igual ao Hero e ao
   menu/rodapé fixos, para o contraste nunca inverter e apagar o texto no modo escuro. */
.brand-section { background: #0A1018; color: #F5F7F4; overflow: hidden; }
.brand-section h2 { color: #F5F7F4; }
.brand-section p { color: rgba(245,247,244,.72); max-width: 50ch; }
.brand-section .eyebrow { color: #8FE3C2; }
.brand-section .eyebrow::before { background: #8FE3C2; }
.brand-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,4rem); align-items: stretch; }
@media (max-width: 860px) { .brand-grid { grid-template-columns: 1fr; } }
/* Card com o gradiente da própria marca (índigo/roxo, visto no mockup da embalagem) — mesmo
   tratamento do protótipo original, em vez do logo solto no fundo escuro da seção. */
.brand-figure {
  min-height: 280px; border-radius: 20px; padding: 12%;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(155deg, #4B3FE0 0%, #2E23A6 100%);
  box-shadow: 0 30px 70px -22px rgba(0,0,0,0.55);
}
.brand-figure img { width: 100%; height: auto; max-height: 100%; object-fit: contain; filter: drop-shadow(0 14px 28px rgba(0,0,0,0.35)); }
.brand-tags { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: 1.2rem; }
.brand-tags span { font-family: var(--font-mono); font-size: .7rem; padding: .35rem .75rem; border-radius: 100px; border: 1px solid rgba(245,247,244,.3); }

.marquee-wrap { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: clamp(2.2rem,5vw,3rem) 0; overflow: hidden; }
.marquee-track { display: flex; gap: 2.6rem; width: max-content; animation: scroll-left 30s linear infinite; }
@media (prefers-reduced-motion: reduce) { .marquee-track { animation: none; } }
@keyframes scroll-left { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.marquee-item { font-family: var(--font-mono); font-size: .85rem; color: var(--ink-soft); white-space: nowrap; }

.cta-section { padding: clamp(5rem,12vw,9rem) 0; text-align: center; }
.cta-section h2 { font-size: clamp(2rem,5vw,3.2rem); max-width: 22ch; margin: 0 auto 1.5rem; }
.cta-section p { color: var(--ink-soft); max-width: 50ch; margin: 0 auto 1.4rem; }
.contact-form { max-width: 520px; margin: 1.6rem auto 0; text-align: left; display: grid; gap: .9rem; }
.contact-form input, .contact-form textarea { width: 100%; padding: .7rem .85rem; border: 1px solid var(--line); border-radius: 5px; font-family: var(--font-body); font-size: .92rem; background: var(--surface); color: var(--ink); }
.contact-form textarea { min-height: 100px; resize: vertical; }
.contact-form button { justify-self: center; }
.hp-field { position: absolute; left: -9999px; }

.site-footer { background: var(--chrome-bg); border-top: 1px solid var(--chrome-line); color: var(--chrome-ink); }
.footer-main { padding-top: 3.5rem; padding-bottom: 2.6rem; display: flex; justify-content: space-between; gap: clamp(2rem,6vw,4rem); flex-wrap: wrap; }
.footer-brand { max-width: 300px; display: flex; flex-direction: column; align-items: flex-start; gap: 1rem; }
.footer-tagline { color: var(--chrome-ink-soft); font-size: .88rem; margin: 0; }
.footer-nav { display: flex; gap: clamp(2rem,6vw,4.5rem); flex-wrap: wrap; }
.footer-col { display: flex; flex-direction: column; gap: .7rem; min-width: 150px; }
.footer-col-title { font-family: var(--font-mono); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: var(--chrome-ink-soft); margin: 0 0 .2rem; }
.footer-col a { color: var(--chrome-ink); text-decoration: none; font-size: .88rem; }
.footer-legal { border-top: 1px solid var(--chrome-line); padding-top: 1.6rem; padding-bottom: 2.2rem; text-align: center; }
.footer-legal p { margin: 0; font-family: var(--font-mono); font-size: .68rem; color: var(--chrome-ink-soft); }

/* ---- botão flutuante "voltar ao topo" ---- */
.back-to-top {
  position: fixed; right: clamp(1rem, 4vw, 1.8rem); bottom: clamp(1rem, 4vw, 1.8rem); z-index: 45;
  width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--chrome-line);
  background: var(--chrome-bg); color: var(--chrome-ink); display: flex; align-items: center; justify-content: center;
  cursor: pointer; box-shadow: 0 10px 24px -10px rgba(19,29,43,0.35);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
  -webkit-tap-highlight-color: transparent; outline: none;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover, .back-to-top:active, .back-to-top:focus {
  background: var(--chrome-bg); color: var(--chrome-ink); outline: none;
}
.back-to-top:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.back-to-top svg { width: 20px; height: 20px; }
@media (prefers-reduced-motion: reduce) { .back-to-top { transition: opacity .01s; } }

.alert-inline { padding: .8rem 1rem; border-radius: 6px; font-size: .88rem; margin-bottom: 1rem; }
.alert-inline.success { background: var(--lab-tint); color: var(--lab-strong); border: 1px solid var(--lab); }
.alert-inline.error { background: #F7E4DE; color: #B3432D; border: 1px solid #B3432D; }