:root {
  --ink: #123c7c;
  --ink-dark: #08152e;
  --paper: #fff8e8;
  --paper-line: rgba(18, 60, 124, 0.14);
  --red: #ef2f4f;
  --yellow: #ffe45c;
  --yellow-dark: #ffbf00;
  --blue: #0969ff;
  --cyan: #00d9ff;
  --green: #21b86b;
  --black: #111827;
  --muted: #5b6780;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(8, 21, 46, 0.22);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at 10% 0%, rgba(255, 228, 92, 0.45), transparent 28%),
    radial-gradient(circle at 90% 5%, rgba(0, 217, 255, 0.22), transparent 28%),
    linear-gradient(180deg, #f2f6ff 0%, #eaf0ff 45%, #fff8e8 100%);
  color: var(--ink-dark);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.top-strip {
  background: var(--ink-dark);
  color: var(--white);
  text-align: center;
  padding: 11px 14px;
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.2px;
}

.top-strip span {
  color: var(--yellow);
}

.hero {
  position: relative;
  padding: 48px 0 64px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--paper-line) 1px, transparent 1px);
  background-size: 100% 34px;
  opacity: 0.55;
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 0.92fr;
  gap: 42px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--yellow);
  color: var(--ink-dark);
  border: 2px solid var(--ink-dark);
  box-shadow: 6px 6px 0 var(--ink-dark);
  padding: 10px 14px;
  font-weight: 950;
  text-transform: uppercase;
  font-size: 13px;
  transform: rotate(-1deg);
  margin-bottom: 22px;
}

h1 {
  font-size: clamp(42px, 7vw, 86px);
  line-height: 0.93;
  letter-spacing: -3px;
  text-transform: uppercase;
  margin-bottom: 22px;
  color: var(--ink-dark);
}

h1 .mark {
  display: inline;
  background: linear-gradient(transparent 48%, var(--yellow) 48%);
  padding: 0 6px;
}

h1 .red {
  color: var(--red);
  font-family: Georgia, serif;
  font-style: italic;
  text-transform: none;
  letter-spacing: -2px;
}

.hero-text {
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.4;
  color: #34425f;
  max-width: 650px;
  margin-bottom: 26px;
}

.hero-text strong {
  color: var(--ink-dark);
  background: linear-gradient(transparent 58%, rgba(255, 228, 92, 0.85) 58%);
  padding: 0 3px;
}

.price-correction {
  position: relative;
  background: var(--paper);
  border: 2px solid var(--ink-dark);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 10px 10px 0 var(--ink-dark);
  max-width: 560px;
  margin-bottom: 24px;
  transform: rotate(-0.6deg);
  overflow: hidden;
}

.price-correction::before {
  content: "corrigido";
  position: absolute;
  top: 12px;
  right: 18px;
  color: var(--red);
  font-family: Georgia, serif;
  font-size: 22px;
  font-weight: 900;
  transform: rotate(8deg);
  opacity: 0.9;
}

.old-price {
  position: relative;
  display: inline-block;
  color: #7b8497;
  font-size: 24px;
  font-weight: 950;
  margin-bottom: 8px;
}

.old-price::after {
  content: "";
  position: absolute;
  left: -4px;
  top: 50%;
  width: calc(100% + 8px);
  height: 5px;
  background: var(--red);
  transform: rotate(-7deg);
  border-radius: 999px;
}

.price-label {
  font-weight: 950;
  color: var(--ink);
  font-size: 18px;
  text-transform: uppercase;
  margin-bottom: -8px;
}

.price {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  color: var(--red);
  font-weight: 950;
}

.price .currency {
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1;
  margin-bottom: 9px;
}

.price .amount {
  font-size: clamp(78px, 12vw, 142px);
  line-height: 0.9;
  letter-spacing: -6px;
}

.price .cents {
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1;
  margin-bottom: 10px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-bottom: 18px;
}

.btn {
  min-height: 58px;
  padding: 16px 24px;
  border-radius: 14px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  font-weight: 950;
  font-size: 16px;
  text-transform: uppercase;
  border: 2px solid var(--ink-dark);
  cursor: pointer;
  transition: 0.18s ease;
}

.btn-primary {
  background: var(--yellow);
  color: var(--ink-dark);
  box-shadow: 7px 7px 0 var(--ink-dark);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 var(--ink-dark);
}

.notes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--ink-dark);
  font-size: 14px;
  font-weight: 800;
}

.notes span {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(8, 21, 46, 0.18);
  border-radius: 999px;
  padding: 8px 10px;
}

.redaction-sheet {
  position: relative;
  background: var(--paper);
  border: 2px solid var(--ink-dark);
  border-radius: 20px;
  padding: 26px;
  box-shadow: var(--shadow), 12px 12px 0 var(--ink-dark);
  transform: rotate(1.2deg);
  overflow: hidden;
}

.redaction-sheet::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--paper-line) 1px, transparent 1px);
  background-size: 100% 31px;
  pointer-events: none;
}

.sheet-content {
  position: relative;
  z-index: 1;
}

.sheet-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.sheet-title {
  color: var(--ink);
  font-size: 24px;
  font-weight: 950;
  text-transform: uppercase;
  line-height: 1.05;
}

.grade {
  border: 3px solid var(--red);
  color: var(--red);
  border-radius: 999px;
  padding: 10px 13px;
  font-weight: 950;
  font-size: 18px;
  transform: rotate(-10deg);
  font-family: Georgia, serif;
}

.teacher-note {
  color: var(--red);
  font-family: Georgia, serif;
  font-weight: 900;
  font-size: 22px;
  line-height: 1.2;
  margin-bottom: 18px;
  transform: rotate(-1deg);
}

.sheet-checks {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
  color: var(--ink-dark);
  font-weight: 900;
  font-size: 16px;
}

.sheet-checks div {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.sheet-checks div::before {
  content: "";
  width: 9px;
  height: 15px;
  flex: 0 0 9px;
  margin-top: 1px;
  border-right: 3px solid var(--green);
  border-bottom: 3px solid var(--green);
  transform: rotate(45deg);
}

.formula-box {
  background: var(--yellow);
  border: 2px solid var(--ink-dark);
  border-radius: 14px;
  padding: 14px;
  color: var(--ink-dark);
  font-weight: 950;
  box-shadow: 5px 5px 0 var(--ink-dark);
}

.section {
  padding: 64px 0;
}

.section-title {
  font-size: clamp(30px, 4vw, 54px);
  text-transform: uppercase;
  text-align: center;
  line-height: 1.04;
  letter-spacing: -1.5px;
  color: var(--ink-dark);
  margin-bottom: 14px;
}

.section-title span {
  background: linear-gradient(transparent 52%, var(--yellow) 52%);
  padding: 0 6px;
}

.section-subtitle {
  max-width: 760px;
  margin: 0 auto 36px;
  text-align: center;
  color: #46536c;
  font-size: 18px;
  line-height: 1.5;
}

.problem-grid,
.receive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.card {
  background: rgba(255, 255, 255, 0.72);
  border: 2px solid var(--ink-dark);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 7px 7px 0 rgba(8, 21, 46, 0.92);
}

.card .icon {
  display: inline-flex;
  min-width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--yellow);
  color: var(--ink-dark);
  font-weight: 950;
}

.card h3 {
  color: var(--ink-dark);
  font-size: 22px;
  line-height: 1.1;
  margin-bottom: 10px;
}

.card p {
  color: #4b5870;
  font-size: 16px;
  line-height: 1.48;
}

.method-card {
  position: relative;
  background: var(--paper);
}

.method-card::before {
  content: attr(data-step);
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  color: var(--white);
  border-radius: 50%;
  font-weight: 950;
  margin-bottom: 16px;
  box-shadow: 4px 4px 0 var(--yellow);
}

.method-card::after {
  content: "etapa";
  position: absolute;
  top: 18px;
  right: 18px;
  color: var(--red);
  font-family: Georgia, serif;
  font-size: 17px;
  font-weight: 900;
  transform: rotate(8deg);
}

.offer {
  padding: 70px 0;
  background:
    linear-gradient(135deg, rgba(255, 228, 92, 0.55), rgba(255, 248, 232, 0.96)),
    linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.6));
  border-top: 2px solid rgba(8, 21, 46, 0.12);
  border-bottom: 2px solid rgba(8, 21, 46, 0.12);
}

.offer-box {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 26px;
  align-items: center;
}

.offer-copy h2 {
  font-size: clamp(34px, 5vw, 64px);
  line-height: 0.98;
  letter-spacing: -2px;
  text-transform: uppercase;
  margin-bottom: 18px;
  color: var(--ink-dark);
}

.offer-copy h2 span {
  color: var(--red);
  font-family: Georgia, serif;
  font-style: italic;
  text-transform: none;
}

.offer-list {
  display: grid;
  gap: 12px;
  margin: 24px 0;
}

.offer-list li {
  list-style: none;
  color: var(--ink-dark);
  font-size: 17px;
  font-weight: 850;
  line-height: 1.35;
}

.offer-list li::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 4px;
  margin-right: 8px;
  border-radius: 999px;
  background: var(--yellow-dark);
  vertical-align: middle;
}

.price-card {
  background: var(--ink-dark);
  color: var(--white);
  border: 2px solid var(--ink-dark);
  border-radius: 22px;
  padding: 26px;
  box-shadow: 12px 12px 0 var(--red);
  text-align: center;
  transform: rotate(-1deg);
}

.discount {
  display: inline-flex;
  background: var(--red);
  color: var(--white);
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 950;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.price-card .old-price {
  color: #cbd5e8;
}

.price-card .price {
  justify-content: center;
  color: var(--yellow);
}

.price-card .btn {
  width: 100%;
  margin-top: 20px;
}

.faq {
  padding: 64px 0 84px;
}

.faq-list {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.78);
  border: 2px solid var(--ink-dark);
  border-radius: 16px;
  padding: 18px 20px;
  box-shadow: 5px 5px 0 var(--ink-dark);
}

.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  text-align: left;
  color: var(--ink-dark);
  font-weight: 950;
  font-size: 18px;
  cursor: pointer;
}

.faq-question span:last-child {
  color: var(--red);
  font-size: 26px;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.24s ease;
  color: #4b5870;
  font-size: 16px;
  line-height: 1.52;
}

.faq-item.active .faq-answer {
  max-height: 230px;
  padding-top: 14px;
}

.final-cta {
  padding: 64px 0 110px;
  text-align: center;
  background: var(--ink-dark);
  color: var(--white);
}

.final-cta .section-title {
  color: var(--white);
}

.final-cta .section-subtitle {
  color: #cbd5e8;
}

.final-cta .btn {
  margin-top: 20px;
  min-width: min(100%, 460px);
}

.sticky-cta {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  background: rgba(8, 21, 46, 0.94);
  backdrop-filter: blur(12px);
  border-top: 2px solid rgba(255, 255, 255, 0.12);
  padding: 10px 12px;
}

.sticky-inner {
  width: min(1120px, calc(100% - 12px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sticky-price {
  color: var(--white);
  font-weight: 950;
  line-height: 1.1;
  font-size: 14px;
}

.sticky-price span {
  color: var(--yellow);
  font-size: 24px;
}

.sticky-cta .btn {
  min-height: 46px;
  padding: 12px 16px;
  white-space: nowrap;
  font-size: 14px;
  box-shadow: 4px 4px 0 var(--red);
}

@media (max-width: 880px) {
  body {
    padding-bottom: 74px;
  }

  .hero-grid,
  .offer-box {
    grid-template-columns: 1fr;
  }

  .redaction-sheet {
    transform: none;
  }

  .problem-grid,
  .method-grid,
  .receive-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    letter-spacing: -1.8px;
  }

  .btn {
    width: 100%;
  }

  .sticky-cta {
    display: block;
  }

  .price-correction {
    box-shadow: 7px 7px 0 var(--ink-dark);
  }
}

@media (max-width: 420px) {
  .container {
    width: min(100% - 22px, 1120px);
  }

  h1 {
    font-size: 40px;
  }

  .price .amount {
    font-size: 78px;
  }

  .price .currency,
  .price .cents {
    font-size: 32px;
  }

  .section-title {
    font-size: 30px;
  }

  .price-correction::before {
    font-size: 18px;
    top: 10px;
    right: 14px;
  }
}