:root {
  --navy: #162368;
  --navy-deep: #0E1748;
  --blue-ink: #1766C2;   /* azul para texto e botões (contraste AA) */
  --btn: #1A73D9;
  --sky: #5EAFFF;
  --ice: #F3F6FA;
  --text: #333A4D;
  --muted: #5A6280;
  --line: #DDE3EC;
  --white: #FFFFFF;
  --wa: #25D366;
  --alert: #B3261E;

  --f-head: "Montserrat", system-ui, sans-serif;
  --f-body: "Poppins", system-ui, sans-serif;

  --wrap: 1160px;
  --gutter: clamp(16px, 4vw, 32px);
  --section: clamp(64px, 9vw, 112px);
  --radius: 16px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0; background: var(--white); color: var(--text);
  font: 400 1rem/1.7 var(--f-body);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--f-head); color: var(--navy); margin: 0; line-height: 1.15; letter-spacing: -0.01em; }
h2, .h2 { font-size: clamp(1.75rem, 3.4vw, 2.5rem); font-weight: 800; }
p { margin: 0; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--sky); outline-offset: 3px; border-radius: 6px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

/* ---------- botões e links ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 26px; border-radius: 999px;
  background: var(--btn); color: var(--white);
  font: 600 .9375rem/1.2 var(--f-head); text-decoration: none; text-align: center;
  transition: background .2s ease;
}
.btn:hover { background: var(--navy); }
.btn--sm { padding: 10px 20px; font-size: .875rem; }
.btn--lg { padding: 16px 32px; font-size: 1rem; }
.btn--white { background: var(--white); color: var(--navy); }
.btn--white:hover { background: var(--sky); color: var(--navy-deep); }

.hero__link {
  font: 600 .9375rem/1.2 var(--f-head); color: var(--white); text-decoration: none;
  border-bottom: 2px solid rgba(255,255,255,.5); padding-bottom: 3px;
  transition: border-color .2s ease;
}
.hero__link:hover { border-color: var(--white); }
.hero__link--dark { color: var(--navy); border-color: var(--line); }
.hero__link--dark:hover { border-color: var(--blue-ink); }

/* ---------- seções ---------- */
.section { padding: var(--section) 0; }
.section--ice { background: var(--ice); }
.section--navy { background: var(--navy); color: rgba(255,255,255,.82); }
.section--navy h2 { color: var(--white); }

.demo-bar { background: #FFE27A; color: var(--navy-deep); font-size: .8125rem; font-weight: 500; text-align: center; padding: 7px 16px; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 20; background: var(--white); border-bottom: 1px solid var(--line); }
.nav__in { display: flex; align-items: center; gap: 32px; height: 72px; }
.brand { font: 800 1.375rem/1 var(--f-head); color: var(--navy); text-decoration: none; letter-spacing: -0.02em; }
.brand span { font-weight: 600; color: var(--blue-ink); }
.brand--light { color: var(--white); }
.brand--light span { color: var(--sky); }
.nav__links { display: flex; gap: 28px; margin-left: auto; }
.nav__links a { text-decoration: none; font-weight: 500; font-size: .9375rem; color: var(--navy); }
.nav__links a:hover { color: var(--blue-ink); }

/* ---------- hero ---------- */
.hero { background: var(--navy); color: var(--white); padding: clamp(48px, 7vw, 88px) 0; overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 48px 64px; align-items: center; }
.hero h1 { color: var(--white); font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 800; max-width: 13ch; line-height: 1.05; }
.hero__lead { max-width: 44ch; margin-top: 24px; font-size: 1.125rem; color: rgba(255,255,255,.85); }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 28px; margin-top: 36px; }
.hero__photo { margin: 0; position: relative; }
.hero__photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; object-position: 40% 50%; border-radius: var(--radius); }


/* ---------- aulas ---------- */
.split-head { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 64px; align-items: end; margin-bottom: 48px; }
.split-head p { color: var(--muted); max-width: 46ch; }
.courses { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px 28px; }
.course { display: flex; flex-direction: column; gap: 10px; }
.course img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); margin-bottom: 8px; }
.course h3 { font-size: 1.1875rem; font-weight: 700; }
.course p { font-size: .9375rem; color: var(--muted); flex: 1; }
.course__link { font: 600 .9375rem/1.2 var(--f-head); color: var(--blue-ink); text-decoration: none; align-self: flex-start; border-bottom: 2px solid #CFE0F5; padding-bottom: 2px; margin-top: 6px; }
.course__link:hover { border-color: var(--blue-ink); }

/* ---------- como são as aulas ---------- */
.how { display: grid; grid-template-columns: 1fr 1.6fr; gap: 48px 80px; }
.how__list { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; }
.how__list div { padding: 22px 0; border-top: 1px solid rgba(255,255,255,.18); }
.how__list dt { font: 700 1.0625rem/1.35 var(--f-head); color: var(--white); margin-bottom: 8px; }
.how__list dd { margin: 0; font-size: .9375rem; }

/* ---------- SDEA ---------- */
.method { display: grid; grid-template-columns: 1fr 1fr; gap: 56px 80px; align-items: center; }
.method__copy { display: flex; flex-direction: column; align-items: flex-start; gap: 20px; }
.method__copy > p { color: var(--muted); max-width: 50ch; }
.em { font-style: normal; color: var(--alert); }
.steps { margin: 4px 0 8px; padding-left: 1.25em; display: grid; gap: 8px; }
.steps li { padding-left: 4px; }
.steps li::marker { font: 700 1rem var(--f-head); color: var(--blue-ink); }
.steps strong { color: var(--navy); font-weight: 600; }

/* diagnóstico das 6 habilidades: a barra mais baixa define o nível */
.skills { margin: 0; background: var(--white); border-radius: var(--radius); padding: 28px 32px 32px; border: 1px solid var(--line); }
.skills__head { font-size: .875rem; color: var(--muted); padding-bottom: 18px; margin-bottom: 22px; border-bottom: 1px solid var(--line); }
.skills__list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.skills__list li { display: grid; grid-template-columns: 112px 1fr 28px; align-items: center; gap: 14px; font-size: .9375rem; font-weight: 500; color: var(--navy); }
.skills__list li::after {
  content: ""; grid-column: 2; grid-row: 1; height: 10px; border-radius: 999px;
  background: linear-gradient(90deg, var(--blue-ink) calc(var(--v) / 6 * 100%), var(--ice) 0);
}
.skills__list b { grid-column: 3; text-align: right; font: 800 1.0625rem/1 var(--f-head); color: var(--navy); }
.skills__list li.is-low, .skills__list li.is-low b { color: var(--alert); }
.skills__list li.is-low::after { background: linear-gradient(90deg, #E04556 calc(var(--v) / 6 * 100%), #FDECEC 0); }
.skills__result { margin-top: 24px; padding: 14px 18px; border-radius: 12px; background: #FDF1F1; color: #7A1B22; font-size: .9375rem; line-height: 1.55; }

/* ---------- a professora ---------- */
.about { display: grid; grid-template-columns: .9fr 1fr; gap: 48px 80px; align-items: center; }
.about__photo { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: 55% 30%; border-radius: var(--radius); }
.about__copy { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.about__role { color: var(--blue-ink); font-weight: 500; margin-top: -8px; }
.about__copy > p:not(.about__role) { max-width: 52ch; }
.facts { margin: 8px 0 12px; width: 100%; max-width: 520px; }
.facts div { display: grid; grid-template-columns: 140px 1fr; gap: 16px; padding: 12px 0; border-top: 1px solid var(--line); }
.facts div:last-child { border-bottom: 1px solid var(--line); }
.facts dt { font-size: .875rem; color: var(--muted); }
.facts dd { margin: 0; font-weight: 500; color: var(--navy); }

/* ---------- depoimentos ---------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; margin-top: 48px; }
.quote { margin: 0; padding-top: 22px; border-top: 2px solid var(--navy); display: flex; flex-direction: column; gap: 14px; }
.quote__result { font: 700 1.125rem/1.35 var(--f-head); color: var(--navy); }
.quote blockquote { margin: 0; color: var(--text); flex: 1; }
.quote figcaption { font-size: .875rem; color: var(--muted); }

/* ---------- dúvidas ---------- */
.faq { display: grid; grid-template-columns: 1fr 1.7fr; gap: 40px 64px; align-items: start; }
.faq__list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary {
  list-style: none; cursor: pointer; position: relative;
  padding: 20px 44px 20px 0; font: 600 1.0625rem/1.4 var(--f-head); color: var(--navy);
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 6px; top: 50%; translate: 0 -50%; font: 400 1.5rem/1 var(--f-body); color: var(--blue-ink); transition: rotate .2s ease; }
details[open] summary::after { rotate: 45deg; }
details p { padding: 0 0 22px; color: var(--muted); max-width: 62ch; }

/* ---------- cta final + rodapé ---------- */
.final { padding: var(--section) 0; background: var(--navy); color: rgba(255,255,255,.82); }
.final__in { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px 64px; align-items: end; }
.final h2 { color: var(--white); font-size: clamp(1.9rem, 4vw, 3rem); max-width: 18ch; }
.final__actions { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.final__actions span { font-size: .9375rem; }

.foot { background: var(--navy-deep); color: rgba(255,255,255,.6); padding: 32px 0; font-size: .875rem; }
.foot__in { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 32px; }
.foot .brand { font-size: 1.125rem; }
.foot__links { display: flex; gap: 24px; margin-left: auto; }
.foot__links a { text-decoration: none; color: var(--white); }
.foot__links a:hover { color: var(--sky); }
.foot__copy { width: 100%; }

.wa-float {
  position: fixed; right: 20px; bottom: 20px; z-index: 30;
  width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center;
  background: var(--wa); box-shadow: 0 8px 20px -8px rgba(0,0,0,.4);
}
.wa-float svg { width: 28px; height: 28px; fill: var(--white); }

/* revelação no scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- responsivo ---------- */
@media (max-width: 1024px) {
  .courses { grid-template-columns: repeat(2, 1fr); }
  .how, .final__in { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav .btn--sm { margin-left: auto; }
  .split-head, .method, .about, .faq, .quotes { grid-template-columns: 1fr; }
  .about__photo { max-width: 420px; }
  .quotes { gap: 36px; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__photo { order: -1; }
}
@media (max-width: 560px) {
  .courses, .how__list { grid-template-columns: 1fr; }
  .hero { padding: 24px 0 56px; }
  .facts div { grid-template-columns: 1fr; gap: 2px; }
  .skills { padding: 22px 20px 24px; }
  .skills__list li { grid-template-columns: 96px 1fr 22px; gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}