:root {
  --bg: #ffffff;
  --fg: #212a35;
  --muted: #f1f3f5;
  --muted-2: #f7f8fa;
  --border: #dfe3e8;
  --mut-fg: #6b7280;
  --primary: #26303c;
  --primary-fg: #ffffff;
  --ink: #1b2330;
  --radius: 10px;
  --container: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3 { letter-spacing: -.02em; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--primary); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0; z-index: 50;
}
.skip:focus { left: 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 18px; border-radius: 8px;
  font-size: 14px; font-weight: 600; border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s; cursor: pointer;
}
.btn-lg { height: 46px; padding: 0 22px; font-size: 15px; }
.btn-block { width: 100%; height: 46px; font-size: 15px; }
.btn-primary { background: var(--primary); color: var(--primary-fg); }
.btn-primary:hover { background: #1c2530; }
.btn-outline { border-color: var(--border); color: var(--fg); background: #fff; }
.btn-outline:hover { background: var(--muted); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.site-header.is-stuck { border-bottom-color: var(--border); }
.header-inner { display: flex; align-items: center; height: 64px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; }
.logo-mark { display: inline-flex; }
.brand-name { font-size: 16px; font-weight: 700; letter-spacing: -.01em; }
.brand-sub { font-size: 10px; font-weight: 600; color: var(--mut-fg); text-transform: uppercase; letter-spacing: .08em; }

.nav { margin-left: auto; display: flex; gap: 26px; }
.nav a { font-size: 14px; color: var(--mut-fg); }
.nav a:hover { color: var(--fg); }
.header-cta { display: flex; gap: 8px; }

.nav-toggle { display: none; flex-direction: column; gap: 4px; width: 40px; height: 40px; align-items: center; justify-content: center; background: none; border: 1px solid var(--border); border-radius: 8px; cursor: pointer; margin-left: auto; }
.nav-toggle span { width: 18px; height: 2px; background: var(--fg); border-radius: 2px; }
.mobile-nav { display: none; flex-direction: column; padding: 8px 24px 16px; border-bottom: 1px solid var(--border); background: #fff; }
.mobile-nav a { padding: 10px 0; color: var(--fg); border-bottom: 1px solid var(--muted); }

/* ---------- hero ---------- */
.hero { padding: 76px 0 16px; text-align: center; }
.hero-inner { display: flex; flex-direction: column; align-items: center; }
.pill { display: inline-block; font-size: 12px; font-weight: 600; color: var(--mut-fg); background: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 5px 12px; margin-bottom: 22px; }
.hero h1 { margin: 0 0 18px; font-size: 48px; line-height: 1.05; font-weight: 700; max-width: 720px; }
.lead { margin: 0 0 30px; font-size: 18px; color: var(--mut-fg); max-width: 620px; }
.hero-actions { display: flex; gap: 12px; margin-bottom: 56px; flex-wrap: wrap; justify-content: center; }

/* ---------- preview ---------- */
.preview { width: 100%; max-width: 880px; border: 1px solid var(--border); border-radius: 14px; overflow: hidden; background: #fff; box-shadow: 0 14px 40px rgba(17,24,39,.08); text-align: left; }
.preview-bar { display: flex; align-items: center; gap: 7px; height: 38px; padding: 0 16px; background: var(--muted-2); border-bottom: 1px solid var(--border); }
.preview-bar .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); }
.preview-url { margin-left: 10px; font-size: 12px; color: var(--mut-fg); }
.preview-body { padding: 20px; }
.kpis { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-bottom: 14px; }
.kpi { border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; }
.kpi-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--mut-fg); }
.kpi-value { margin-top: 6px; font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }
.bars { display: flex; align-items: flex-end; gap: 8px; height: 110px; border: 1px solid var(--border); border-radius: 8px; padding: 14px; }
.bars span { flex: 1; background: #c2c9d2; border-radius: 4px 4px 0 0; }

/* ---------- bands / section headers ---------- */
.band { padding: 72px 0; border-top: 1px solid var(--border); }
.band-muted { background: var(--muted); }
.band-dark { background: var(--ink); border-top-color: var(--ink); }
.eyebrow { margin: 0 0 8px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: var(--mut-fg); }
.eyebrow-invert { color: #8b97a6; }
.h-section { margin: 0 0 14px; font-size: 28px; font-weight: 700; }
.h-invert { color: #fff; }
.lede { margin: 0 0 28px; font-size: 18px; color: var(--mut-fg); max-width: 640px; }

/* ---------- problema (pains) ---------- */
.pains { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.pain { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.pain-tag { display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--mut-fg); margin-bottom: 10px; }
.pain p { margin: 0; font-size: 14px; color: var(--fg); }

/* ---------- funcionalidades ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.feature { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.feature-icon { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 8px; background: var(--muted); color: var(--fg); margin-bottom: 14px; }
.feature-icon svg { width: 18px; height: 18px; }
.feature h3 { margin: 0 0 8px; font-size: 15px; font-weight: 600; }
.feature p { margin: 0; font-size: 14px; color: var(--mut-fg); }

/* ---------- como funciona (dark) ---------- */
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.step { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: 24px; }
.step-n { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 8px; background: rgba(255,255,255,.1); color: #fff; font-weight: 700; margin-bottom: 14px; }
.step h3 { margin: 0 0 8px; font-size: 16px; font-weight: 600; color: #fff; }
.step p { margin: 0; font-size: 14px; color: #aeb8c4; }

/* ---------- demo + form ---------- */
.demo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.demo-points { margin: 4px 0 0; padding: 0; list-style: none; }
.demo-points li { position: relative; padding-left: 22px; margin-bottom: 8px; font-size: 15px; color: var(--fg); }
.demo-points li::before { content: ""; position: absolute; left: 0; top: 8px; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); }
.demo-form { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; box-shadow: 0 10px 30px rgba(17,24,39,.06); }
.field { display: flex; flex-direction: column; gap: 6px; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 600; }
.field .opt { font-weight: 400; color: var(--mut-fg); }
.field input, .field textarea { font: inherit; font-size: 14px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--fg); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(38,48,60,.08); }
.form-note { margin: 10px 0 0; font-size: 13px; }
.form-note.is-ok { color: #1f7a4d; }
.form-note.is-err { color: #b3261e; }

/* ---------- footer + financiamento ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 40px 0 32px; }
.funding { text-align: center; padding-bottom: 28px; margin-bottom: 28px; border-bottom: 1px solid var(--border); }
.funding-caption { margin: 0 0 16px; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--mut-fg); }
.funding-logos { display: inline-block; }
.funding-logos img { width: 100%; max-width: 720px; height: auto; }
.funding-note { margin: 14px 0 0; font-size: 13px; }
.funding-note a { color: var(--mut-fg); text-decoration: underline; text-underline-offset: 2px; }
.funding-note a:hover { color: var(--fg); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-meta { font-size: 13px; color: var(--mut-fg); text-align: right; }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .nav, .header-cta { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav:not([hidden]) { display: flex; }
  .hero h1 { font-size: 34px; }
  .feature-grid, .steps { grid-template-columns: 1fr 1fr; }
  .pains { grid-template-columns: 1fr 1fr; }
  .demo-grid { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 560px) {
  .kpis { grid-template-columns: 1fr; }
  .feature-grid, .steps, .pains { grid-template-columns: 1fr; }
  .demo-form { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-meta { text-align: left; }
}