:root {
  --bg: #05111f;
  --surface: #0a1a2b;
  --text: #f3f6fa;
  --muted: #a0b0c2;
  --cyan: #17e4d6;
  --border: #203144;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 105px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
/* Logo no cabeçalho e no rodapé */
.brand-logo {
  display: block;
  width: auto;
  height: auto;
  max-width: 180px;
  max-height: 52px;
  object-fit: contain;
}

/* Logo na apresentação do autor */
.author-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
}

.author-logo {
  display: block;
  width: 100%;
  max-width: 240px;
  height: auto;
  object-fit: contain;
}

@media (max-width: 480px) {
  .brand-logo {
    max-width: 115px;
    max-height: 40px;
  }

  .author-logo {
    max-width: 180px;
  }
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  cursor: pointer;
}
button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 5px;
}
p {
  color: var(--muted);
  margin: 0 0 22px;
}
h1,
h2,
h3 {
  line-height: 1.13;
  letter-spacing: -0.045em;
  margin: 0;
}
h1 {
  font-size: clamp(44px, 5.1vw, 73px);
  font-weight: 750;
}
h2 {
  font-size: clamp(32px, 3.3vw, 46px);
}
h3 {
  font-size: 23px;
  letter-spacing: -0.025em;
}
em {
  font-style: normal;
  color: var(--cyan);
}
.container {
  width: min(1180px, calc(100% - 64px));
  margin-inline: auto;
}
header {
  border-bottom: 1px solid #ffffff0b;
  background: #05111feb;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 96px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  line-height: 1.35;
  white-space: nowrap;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.08em;
}
.brand small {
  display: block;
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-top: 4px;
}
.monogram {
  font-size: 29px;
  letter-spacing: -0.08em;
  color: var(--cyan);
}
nav {
  display: flex;
  gap: 30px;
  font-size: 14px;
  color: #b9c5d3;
}
nav a:hover,
footer a:hover {
  color: var(--cyan);
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  border-radius: 7px;
  font-weight: 700;
  line-height: 1.4;
  padding: 17px 24px;
  transition:
    transform 0.2s,
    background 0.2s;
}
.button:hover {
  transform: translateY(-3px);
}
.button.small {
  font-size: 14px;
  padding: 12px 18px;
  border: 1px solid #2c666b;
  background: #0c292f;
  color: #72eee6;
  gap: 18px;
}
.primary {
  background: var(--cyan);
  color: #032120;
  box-shadow: 0 5px 30px #17e4d612;
}
.primary:hover {
  background: #6af3e9;
}
.hero {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 65px;
  align-items: center;
  padding-top: 72px;
  padding-bottom: 74px;
}
.eyebrow {
  font-family: Arial, sans-serif;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--cyan);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.line {
  display: inline-block;
  width: 23px;
  height: 2px;
  background: var(--cyan);
}
.hero .lead {
  font-size: 20px;
  line-height: 1.6;
  max-width: 510px;
  color: #c4d0dd;
  margin: 26px 0 15px;
}
.sublead {
  font-size: 16px;
  max-width: 470px;
  margin-bottom: 28px;
}
.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 22px;
  font-size: 12px;
  color: #9eb2c3;
}
.hero-notes span::first-letter {
  color: var(--cyan);
}
.hero-art {
  position: relative;
  padding: 0 36px 0 24px;
  isolation: isolate;
}
.hero-art:before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 10% -10%;
  background: radial-gradient(ellipse, #00b7ce25, transparent 67%);
  filter: blur(25px);
}
.cover-wrap {
  transform: perspective(1300px) rotateY(-7deg) rotateZ(3deg);
  border: 1px solid #336e7d;
  border-radius: 5px;
  overflow: hidden;
  box-shadow: 18px 28px 65px #0009;
  transition: transform 0.5s;
}
.cover-wrap:hover {
  transform: perspective(1300px) rotateY(0) rotateZ(0);
}
.cover-wrap img {
  display: block;
  width: 100%;
  height: auto;
}
.floating-label {
  position: absolute;
  bottom: 47px;
  left: -8px;
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid #35646e;
  background: #0b2533f5;
  padding: 14px 20px;
  border-radius: 8px;
  box-shadow: 0 12px 30px #0004;
  font-size: 13px;
  color: #a6becd;
}
.floating-label strong {
  display: block;
  color: white;
  font-size: 15px;
}
.spark {
  color: var(--cyan);
  font-size: 32px;
}
.edition {
  display: flex;
  justify-content: space-between;
  margin-top: 33px;
  font-size: 10px;
  color: #85a2b7;
  letter-spacing: 0.13em;
}
.topics-band {
  border-block: 1px solid var(--border);
  background: #081725;
}
.topic-list {
  display: flex;
  flex-wrap: wrap;
  gap: 25px;
  align-items: center;
  justify-content: space-between;
  padding-block: 23px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #c4d0dc;
}
.topic-list b {
  font-size: 19px;
  color: var(--cyan);
}
.section {
  padding-block: 96px;
}
.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 50px;
  margin-bottom: 42px;
}
.section-heading p {
  max-width: 350px;
  margin: 0;
}
.section-heading .eyebrow {
  margin-bottom: 17px;
}
.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.topic-card {
  background: linear-gradient(135deg, #0c1e30, #081726);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  transition:
    border-color 0.25s,
    transform 0.25s;
}
.topic-card:hover {
  transform: translateY(-4px);
  border-color: #35797f;
}
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 29px;
  color: #667f95;
  font-size: 12px;
}
.icon {
  color: var(--cyan);
  font-size: 26px;
  line-height: 1;
}
.topic-card h3 {
  font-size: 21px;
  margin-bottom: 15px;
}
.topic-card p {
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 24px;
}
.tags {
  border-top: 1px solid var(--border);
  padding-top: 17px;
  color: #7899af;
  font-size: 12px;
}
.statement {
  background: #0d2c36;
  border-color: #24535b;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.big-number {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 72px;
  line-height: 1;
  color: var(--cyan);
  font-weight: 700;
  letter-spacing: -0.06em;
  margin-bottom: 20px;
}
.big-number span {
  font-size: 23px;
  letter-spacing: -0.02em;
}
.statement p {
  margin-bottom: 16px;
}
.statement a {
  color: var(--cyan);
  font-size: 14px;
}
.practice-section {
  padding-block: 80px;
  background: #081827;
  border-block: 1px solid var(--border);
}
.practice {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
  align-items: center;
}
.practice h2 {
  margin-bottom: 24px;
}
.practice p {
  max-width: 460px;
}
.practice .sample-note {
  font-size: 12px;
  max-width: 340px;
  color: #7890a5;
  margin: 0;
}
.prompt-panel {
  border: 1px solid #2a4355;
  border-radius: 12px;
  background: #04111e;
  overflow: hidden;
  box-shadow: 0 24px 48px #0002;
}
.panel-title {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #d8e3ed;
}
.code-label {
  color: #68879c;
}
.tabs {
  padding: 23px 24px 0;
  display: flex;
  gap: 8px;
}
.tabs button {
  border: 1px solid #23364a;
  border-radius: 6px;
  padding: 8px 17px;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
}
.tabs button[aria-selected="true"] {
  border-color: #277b7c;
  background: #123a41;
  color: var(--cyan);
}
#prompt {
  padding: 25px 24px;
  min-height: 255px;
}
.prompt-label {
  font-size: 10px;
  letter-spacing: 0.15em;
  color: #64849d;
}
#prompt p {
  font-family: monospace;
  line-height: 1.8;
  font-size: 15px;
  color: #d4e0e9;
  margin: 14px 0 0;
  max-width: none;
}
.panel-footer {
  border-top: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: #7e9bb0;
}
.panel-footer button {
  background: none;
  border: 0;
  color: var(--cyan);
  font-size: 13px;
  padding: 5px;
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 45px;
  margin-top: 55px;
}
.steps article {
  border-top: 1px solid #294052;
  padding-top: 24px;
}
.steps article > span {
  color: var(--cyan);
  font-size: 14px;
}
.steps h3 {
  margin: 17px 0 14px;
  font-size: 23px;
}
.steps p {
  font-size: 15px;
  margin: 0;
}
.author {
  border-block: 1px solid var(--border);
  padding: 56px 60px;
  display: grid;
  grid-template-columns: 0.45fr 1fr;
  gap: 60px;
  align-items: center;
  background: #081725;
}
.author-mark {
  font-size: 90px;
  font-weight: 700;
  letter-spacing: -0.1em;
  color: var(--cyan);
  text-align: center;
}
.author h2 {
  font-size: 36px;
}
.author .eyebrow {
  margin-bottom: 15px;
}
.author-role {
  color: var(--cyan);
  font-size: 14px;
  margin: 17px 0;
}
.author p {
  font-size: 16px;
}
.author-sign {
  font-size: 13px;
  color: #c3d2df;
}
.offer {
  background: radial-gradient(at 0 0, #134653, transparent 65%), #0b2332;
  border: 1px solid #29606c;
  border-radius: 15px;
  padding: 55px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 70px;
  align-items: center;
}
.offer h2 {
  margin-bottom: 23px;
}
.offer p {
  font-size: 16px;
}
.offer p strong {
  color: #d8e7ec;
  font-weight: 400;
}
.offer-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 20px;
  font-size: 12px;
  color: #c2dedf;
}
.offer-action {
  border-left: 1px solid #2c505e;
  padding-left: 45px;
}
.offer-label {
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: 0.13em;
}
.offer-action h3 {
  font-size: 32px;
  margin: 17px 0 25px;
}
.offer-action .button {
  width: 100%;
  gap: 15px;
  font-size: 15px;
  padding-inline: 17px;
}
.offer-action p {
  font-size: 12px;
  margin: 17px 0 0;
  line-height: 1.8;
}
.faq {
  display: grid;
  grid-template-columns: 0.65fr 1fr;
  gap: 80px;
  padding-bottom: 100px;
}
.faq .eyebrow {
  margin-bottom: 17px;
}
details {
  border-bottom: 1px solid var(--border);
}
summary {
  padding: 22px 32px 22px 0;
  cursor: pointer;
  list-style: none;
  position: relative;
  font-size: 16px;
  font-weight: 600;
}
summary::-webkit-details-marker {
  display: none;
}
summary:after {
  content: "+";
  position: absolute;
  right: 2px;
  color: var(--cyan);
  font-size: 24px;
  top: 16px;
}
details[open] summary:after {
  content: "−";
}
details p {
  font-size: 15px;
  margin-bottom: 24px;
  padding-right: 25px;
}
footer {
  border-top: 1px solid var(--border);
  padding-block: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 25px;
}
footer > span,
footer > a:last-child {
  font-size: 12px;
  color: #879eaf;
}
.sr-only,
.skip:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}
.skip:focus {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 30;
  background: var(--cyan);
  color: #05111f;
  padding: 12px;
}
@media (min-width: 1400px) {
  .hero {
    padding-block: 86px;
  }
  .hero-art {
    max-width: 490px;
  }
}
@media (max-width: 1050px) {
  .hero {
    gap: 25px;
  }
  .hero-art {
    padding-inline: 20px;
  }
  .hero h1 {
    font-size: 54px;
  }
  .hero-notes {
    gap: 10px;
  }
  .practice {
    gap: 35px;
  }
  .topic-card {
    padding: 23px;
  }
  .offer {
    padding: 38px;
    gap: 35px;
  }
  .offer-action {
    padding-left: 30px;
  }
  nav {
    gap: 18px;
  }
  .nav {
    gap: 16px;
  }
  .brand {
    font-size: 13px;
  }
  .author {
    gap: 35px;
    padding: 45px;
  }
  .floating-label {
    left: 0;
  }
  .section-heading {
    gap: 35px;
  }
}
@media (max-width: 780px) {
  .container {
    width: calc(100% - 40px);
  }
  .nav {
    min-height: 80px;
  }
  .nav nav {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    gap: 45px;
    padding-top: 45px;
    padding-bottom: 50px;
  }
  .hero-copy {
    max-width: 620px;
  }
  .hero h1 {
    font-size: clamp(44px, 7.8vw, 62px);
  }
  .hero .lead {
    max-width: 570px;
  }
  .hero-art {
    width: min(430px, 88%);
    margin: auto;
    padding-inline: 15px;
  }
  .hero-notes {
    gap: 16px;
  }
  .topics-band .topic-list {
    justify-content: center;
    gap: 15px;
    font-size: 10px;
  }
  .topic-list b {
    font-size: 15px;
  }
  .section {
    padding-block: 65px;
  }
  .section-heading {
    display: block;
  }
  .section-heading p {
    margin-top: 22px;
    max-width: 540px;
  }
  .topics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .practice {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .practice-section {
    padding-block: 55px;
  }
  .practice p {
    max-width: 600px;
  }
  .practice .sample-note {
    max-width: none;
  }
  .steps {
    gap: 25px;
    margin-top: 30px;
  }
  .steps h3 {
    font-size: 20px;
  }
  .author {
    grid-template-columns: 1fr;
    padding: 30px;
    gap: 20px;
  }
  .author-mark {
    text-align: left;
    font-size: 55px;
  }
  .offer {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .offer-action {
    border-left: 0;
    border-top: 1px solid #2c505e;
    padding: 30px 0 0;
  }
  .offer-action .button {
    max-width: 400px;
  }
  .faq {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-bottom: 60px;
  }
  .faq h2 br {
    display: none;
  }
  footer {
    flex-wrap: wrap;
  }
  footer > span {
    order: 3;
    width: 100%;
  }
}
@media (max-width: 480px) {
  .container {
    width: calc(100% - 36px);
  }
  .nav {
    gap: 10px;
  }
  .brand {
    font-size: 11px;
    gap: 8px;
  }
  .brand small {
    font-size: 8px;
    letter-spacing: 0.09em;
  }
  .monogram {
    font-size: 24px;
  }
  .button.small {
    font-size: 12px;
    padding: 10px 12px;
    gap: 8px;
  }
  .hero h1 {
    font-size: 43px;
    letter-spacing: -0.05em;
  }
  .hero .eyebrow {
    font-size: 10px;
  }
  .hero .lead {
    font-size: 18px;
  }
  .hero-notes {
    font-size: 11px;
    gap: 10px;
  }
  .hero-art {
    width: 90%;
  }
  .floating-label {
    padding: 11px 15px;
    left: -10px;
    bottom: 42px;
  }
  .edition {
    font-size: 8px;
  }
  .topics-grid {
    grid-template-columns: 1fr;
  }
  .topic-card {
    padding: 25px;
  }
  .card-top {
    margin-bottom: 22px;
  }
  .section-heading h2 br {
    display: none;
  }
  .statement {
    min-height: 240px;
  }
  .steps {
    grid-template-columns: 1fr;
    gap: 27px;
  }
  .offer {
    padding: 27px 23px;
  }
  .offer h2 {
    font-size: 33px;
  }
  .offer .eyebrow {
    font-size: 10px;
  }
  .panel-title {
    padding-inline: 18px;
  }
  .code-label {
    display: none;
  }
  .tabs {
    padding-inline: 18px;
  }
  .tabs button {
    padding: 8px 14px;
  }
  .panel-footer {
    padding-inline: 18px;
    gap: 10px;
    font-size: 10px;
  }
  .panel-footer button {
    font-size: 12px;
  }
  #prompt {
    padding-inline: 18px;
    min-height: 285px;
  }
  .author h2 {
    font-size: 30px;
  }
  .author {
    padding: 28px;
  }
  h2 {
    font-size: 33px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    transition: none !important;
    animation: none !important;
  }
}

/* Complete guide edition */
.hero h1 {
  font-size: clamp(44px, 4.9vw, 68px);
  max-width: 610px;
}
.hero-number {
  display: block;
  color: var(--cyan);
}
.count {
  font-size: 42px;
  line-height: 1;
  color: var(--cyan);
  font-weight: 700;
  letter-spacing: -0.05em;
}
.count small {
  font-size: 11px;
  letter-spacing: 0.08em;
  font-weight: 600;
}
.topic-card {
  display: flex;
  flex-direction: column;
}
.topic-card h3 {
  line-height: 1.25;
}
.topic-card .tags {
  margin-top: auto;
}
.content-total {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 15px;
  border-top: 1px solid var(--border);
  padding-top: 25px;
  margin-top: 30px;
  font-size: 14px;
  color: var(--muted);
}
.content-total strong {
  color: #d6e5ef;
  font-weight: 500;
}
.content-total strong span {
  color: var(--cyan);
  font-weight: 700;
}
.structure-section {
  padding: 80px 0;
  background: #0b2130;
  border-block: 1px solid #214653;
}
.structure-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px 35px;
}
.structure-grid li {
  display: flex;
  gap: 16px;
  border-top: 1px solid #2a485a;
  padding-top: 25px;
}
.structure-grid li > span {
  color: var(--cyan);
  font-family: monospace;
  font-size: 14px;
  padding-top: 4px;
}
.structure-grid h3 {
  font-size: 20px;
  line-height: 1.25;
  margin-bottom: 12px;
}
.structure-grid p {
  font-size: 15px;
  margin: 0;
}
.practice-section {
  background: #061421;
  border-top: 0;
}
@media (max-width: 780px) {
  .structure-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .structure-section {
    padding-block: 55px;
  }
  .hero h1 {
    max-width: 600px;
  }
}
@media (max-width: 480px) {
  .structure-grid {
    grid-template-columns: 1fr;
    gap: 23px;
  }
  .hero h1 {
    font-size: 44px;
  }
  .content-total {
    font-size: 13px;
  }
  .count {
    font-size: 38px;
  }
}

/* Amostra única */
.sample-result {
  margin-top: 35px;
  border: 1px solid #294858;
  border-radius: 10px;
  padding: 28px;
  background: #0b2130;
}
.sample-result h3 {
  margin-bottom: 18px;
}
.sample-result ol {
  padding-left: 23px;
  color: #dce9ed;
}
.sample-result li {
  padding: 8px 0 8px 4px;
}
.sample-result .sample-disclaimer {
  font-size: 13px;
  color: #9bb2c2;
  margin-bottom: 0;
}
.sample-result strong {
  color: #dce9ed;
}
.practice strong {
  color: #dce9ed;
}
.sample-result .eyebrow {
  margin-bottom: 15px;
}
@media (max-width: 480px) {
  .sample-result {
    padding: 23px;
  }
  .sample-result h3 {
    font-size: 23px;
  }
}
/* WhatsApp: azul escuro e ciano */
.whatsapp-float,
footer a.whatsapp-footer {
  background: #071b2e;
  color: #19e1d4;
  border: 1px solid #19e1d4;
  box-shadow: 0 0 18px rgb(25 225 212 / 15%);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease,
    color 0.2s ease;
}

/* Botão flutuante */
.whatsapp-float {
  position: fixed;
  right: max(20px, env(safe-area-inset-right));
  bottom: max(20px, env(safe-area-inset-bottom));
  z-index: 100;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Botão do rodapé */
footer a.whatsapp-footer {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 14px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  max-width: 100%;
}

/* Efeito ao passar o mouse */
.whatsapp-float:hover,
footer a.whatsapp-footer:hover {
  background: #19e1d4;
  color: #071b2e;
  transform: translateY(-3px);
  box-shadow: 0 0 28px rgb(25 225 212 / 40%);
}

/* Navegação pelo teclado */
.whatsapp-float:focus-visible,
footer a.whatsapp-footer:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 5px;
}

/* Espaço para o flutuante não cobrir o fim do rodapé */
footer.container {
  padding-bottom: 100px;
}

@media (max-width: 480px) {
  .whatsapp-float {
    width: 54px;
    height: 54px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-float,
  footer a.whatsapp-footer {
    transition: none;
    transform: none;
  }
}