:root {
  color-scheme: dark;
  --ink: #090a0b;
  --panel: #141517;
  --white: #fafaf7;
  --muted: #acafb4;
  --orange: #ff7a2b;
  --yellow: #ffe07a;
  --blue: #2865c4;
  --line: #34363a;
  --page: 1280px;
  --gutter: clamp(20px, 4.4vw, 64px);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-offset, 7rem); }
body { margin: 0; background: var(--ink); color: var(--white); font-size: 18px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
[hidden] { display: none !important; }
::selection { background: var(--yellow); color: var(--ink); }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; height: auto; }
svg { flex: 0 0 auto; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { line-height: 1.08; }
p + p { margin-top: 1.1em; }
strong { font-weight: 650; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--yellow); outline-offset: 5px; }
.light-section a:focus-visible, .light-section button:focus-visible, .light-section summary:focus-visible { outline-color: #994100; }
.container { width: min(var(--page), calc(100% - var(--gutter) * 2)); margin-inline: auto; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; padding: 12px 20px; color: var(--ink); background: var(--yellow); border-radius: 8px; transform: translateY(-180%); font-weight: 650; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(9, 10, 11, .96); border-bottom: 1px solid #24262a; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 80px; }
.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-size: 15px; font-weight: 750; letter-spacing: -.03em; }
.brand-mark { color: var(--orange); fill: none; stroke: currentColor; stroke-width: 2.8; stroke-linecap: round; }
.nav-links { display: flex; gap: 28px; margin-left: auto; font-size: 15px; color: #c5c7cb; }
.nav-links a { display: flex; align-items: center; min-height: 44px; }
.nav-links a:hover, .site-footer a:hover { color: var(--orange); }
.nav-cta { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-height: 44px; padding: 8px 20px; border: 1px solid #53565c; border-radius: 100px; font-size: 15px; font-weight: 600; }
.nav-cta:hover { background: #24262a; }
.eyebrow { font-size: 13px; font-weight: 650; line-height: 1.5; letter-spacing: .12em; text-transform: uppercase; }
.hero { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); column-gap: clamp(40px, 5vw, 80px); padding-top: clamp(48px, 5vw, 72px); }
.hero-copy { align-self: center; min-width: 0; padding-block: 24px; }
.hero .eyebrow { display: flex; align-items: center; gap: 10px; color: var(--muted); }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--orange); flex: 0 0 auto; }
h1 { margin-top: 28px; font-size: clamp(28px, 4.6vw, 66px); font-weight: 780; letter-spacing: -.065em; }
.subtitle { max-width: 20ch; margin-top: 22px; font-size: clamp(27px, 2.6vw, 38px); line-height: 1.2; font-weight: 500; letter-spacing: -.045em; }
.author { margin-top: 26px; color: #c5c7cb; font-size: 19px; }
.hero-action { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; margin-top: 35px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; min-height: 56px; padding: 15px 24px; border: 0; border-radius: 100px; font-size: 16px; font-weight: 650; line-height: 1.4; text-align: center; transition: background-color .2s, transform .2s; }
.button-primary { background: var(--orange); color: var(--ink); }
.button-primary:hover { background: #ff9557; transform: translateY(-2px); }
.button-primary span { font-size: 23px; line-height: 1; }
.launch-note { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }
.launch-note time { display: block; color: var(--white); }
.hero-status { margin-top: 17px; font-size: 14px; color: var(--muted); }
.cover { width: min(100%, 356px); justify-self: center; align-self: center; }
.cover-frame { box-shadow: 0 22px 56px #0009; }
.cover img { width: 100%; }
.cover figcaption { margin-top: 17px; text-align: center; color: var(--muted); font-size: 13px; }
.hero-foot { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 24px; padding: 24px 0; border-top: 1px solid var(--line); margin-top: 52px; color: var(--muted); font-size: 13px; }
.hero-foot span:first-child { color: var(--white); }
.light-section { background: var(--white); color: var(--ink); color-scheme: light; }
.light-section .eyebrow { color: #9b410b; }
.thesis { padding-block: clamp(64px, 8vw, 116px); }
.thesis-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 8vw, 120px); }
h2 { font-size: clamp(36px, 4.3vw, 62px); font-weight: 650; letter-spacing: -.05em; }
.eyebrow + h2 { margin-top: 23px; }
.muted-light { color: #6d6f72; }
.muted-dark { color: #94979d; }
.thesis-copy { padding-top: 4px; }
.lead { font-size: clamp(22px, 2.1vw, 28px); line-height: 1.4; font-weight: 500; letter-spacing: -.025em; }
.thesis-copy > p:not(.lead):not(.editorial-note) { color: #414449; }
.editorial-note { margin-top: 28px; padding-top: 20px; border-top: 1px solid #d0d1ce; color: #626468; font-size: 14px; }
.section-space { padding-block: clamp(64px, 8vw, 112px); }
.section-heading { max-width: 860px; margin-bottom: 48px; }
.architecture .eyebrow, .delivery .eyebrow, .faq-section .eyebrow { color: var(--orange); }
.section-intro { margin-top: 26px; max-width: 53ch; color: var(--muted); }
.principles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 20px; overflow: clip; }
.principle { position: relative; padding: clamp(26px, 3.2vw, 46px); background: var(--panel); min-width: 0; }
.principle-number { display: block; margin-bottom: 40px; color: var(--orange); font-size: 14px; font-weight: 600; }
.principle:nth-child(2) .principle-number { color: #8dbbff; }
.principle:nth-child(3) .principle-number { color: var(--yellow); }
.principle h3 { max-width: 22ch; font-size: clamp(24px, 2.2vw, 32px); font-weight: 600; letter-spacing: -.035em; }
.principle p { margin-top: 18px; max-width: 46ch; color: #bfc1c5; }
.question-panel { position: relative; margin-top: 32px; padding: clamp(28px, 4.5vw, 64px); background: var(--orange); color: var(--ink); border-radius: 20px; }
.question-panel .eyebrow { color: var(--ink); }
.big-question { max-width: 17ch; margin-top: 28px; font-size: clamp(35px, 4.8vw, 68px); font-weight: 650; line-height: 1.05; letter-spacing: -.045em; }
.big-question em { font-style: normal; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 7px; }
.question-mark { position: absolute; right: 50px; bottom: 32px; font-size: 90px; line-height: 1; }
.editions { padding-block: clamp(64px, 8vw, 112px); }
.editions-heading { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; max-width: none; align-items: end; margin-bottom: 34px; }
.editions-heading .section-intro { color: #5e6165; margin: 0; max-width: 34ch; }
.availability { padding: 18px 22px; margin-bottom: 26px; border-left: 3px solid #a94a10; background: #f0ede7; font-size: 16px; color: #4b423b; }
.edition-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.edition-card { min-width: 0; padding: clamp(24px, 3.1vw, 44px); border: 1px solid #d5d6d3; border-radius: 20px; background: #fff; }
.edition-platform { font-size: 14px; color: #5e6165; font-weight: 550; }
.edition-card h3 { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 16px; font-size: clamp(30px, 3vw, 42px); letter-spacing: -.04em; font-weight: 650; }
.edition-accent { width: 18px; height: 18px; border-radius: 50%; flex: 0 0 auto; }
.accent-orange { background: var(--orange); }
.accent-blue { background: var(--blue); }
.edition-description { margin-top: 18px; color: #5e6165; }
.specs { margin: 30px 0; }
.specs div { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-bottom: 1px solid #e4e5e2; font-size: 16px; }
.specs dt { color: #626468; }
.specs dd { margin: 0; text-align: right; font-weight: 550; }
.price { font-size: clamp(20px, 2vw, 25px); font-weight: 650; line-height: 1.3; letter-spacing: -.025em; }
.shipping { margin-top: 8px; color: #626468; font-size: 14px; }
.purchase-button { width: 100%; margin-top: 24px; background: var(--ink); color: var(--white); cursor: pointer; }
.purchase-button:disabled { background: #e9eae7; color: #626468; cursor: not-allowed; opacity: 1; }
.purchase-button:not(:disabled):hover { background: #34363a; }
.purchase-note { margin-top: 12px; font-size: 14px; color: #626468; text-align: center; }
.checkout-terms { margin-top: 22px; font-size: 16px; overflow-wrap: anywhere; }
.checkout-terms summary { min-height: 44px; padding-block: 10px; cursor: pointer; }
.checkout-terms dt { margin-top: 14px; font-weight: 650; }
.checkout-terms dd { margin: 4px 0 0; color: #414449; white-space: pre-line; }
.edition-footnote { margin-top: 26px; color: #626468; font-size: 14px; }
.delivery { display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(40px, 7vw, 100px); }
.delivery h2 { font-size: clamp(35px, 3.5vw, 50px); }
.delivery-content { color: #bfc1c5; }
.date-block { display: flex; align-items: center; flex-wrap: wrap; gap: 26px; margin-bottom: 30px; }
.date-day { color: var(--white); font-size: clamp(64px, 6vw, 86px); font-weight: 650; line-height: 1; letter-spacing: -.065em; }
.date-day > span { color: var(--orange); }
.date-block p { margin: 0; font-size: 14px; }
.date-block time { color: var(--white); }
.faq-section { display: grid; grid-template-columns: .8fr 1.4fr; gap: clamp(40px, 7vw, 100px); padding-top: 32px; padding-bottom: clamp(64px, 8vw, 112px); }
.faq-list { min-width: 0; }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; list-style: none; cursor: pointer; min-height: 64px; padding: 23px 40px 23px 0; font-size: 18px; font-weight: 550; line-height: 1.4; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; top: 20px; right: 4px; font-size: 25px; color: var(--orange); font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list summary:hover { color: var(--orange); }
.faq-answer { padding: 0 36px 24px 0; color: #bfc1c5; font-size: 17px; }
.closing { padding-block: clamp(60px, 7vw, 100px); border-top: 1px solid var(--line); text-align: center; }
.closing .eyebrow { color: var(--muted); }
.closing h2 { margin-block: 26px 34px; font-size: clamp(43px, 6vw, 84px); }
.closing h2 span { color: var(--orange); }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; border-top: 1px solid var(--line); padding-block: 24px; font-size: 13px; color: var(--muted); }
.site-footer p { margin: 0; }
.site-footer p span { margin-inline: 5px; }
.site-footer a { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; }

@media (min-width: 1600px) {
  .hero { column-gap: 80px; }
}

@media (max-width: 1000px) {
  .hero { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 30px; }
  .hero-action { gap: 16px; }
  .hero-foot { margin-top: 24px; }
  .thesis-grid { gap: 40px; }
  .question-mark { font-size: 64px; right: 28px; }
  .delivery, .faq-section { gap: 40px; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: var(--nav-offset, 6.5rem); }
  .nav { min-height: 72px; gap: 12px; flex-wrap: wrap; padding-block: 10px; }
  .nav-links { display: none; }
  .nav-cta { padding: 8px 14px; gap: 10px; }
  .hero { grid-template-columns: minmax(0, 1fr); padding-top: 30px; }
  .hero-copy { padding: 8px 0 0; }
  .hero .eyebrow { font-size: 12px; letter-spacing: .08em; }
  h1 { font-size: clamp(28px, 6.5vw, 49px); margin-top: 24px; }
  .subtitle { font-size: clamp(28px, 5.7vw, 39px); max-width: 24ch; margin-top: 18px; }
  .author { font-size: 18px; margin-top: 22px; }
  .hero-action { margin-top: 28px; gap: 18px; }
  .launch-note { font-size: 15px; }
  .hero-status { font-size: 14px; }
  .cover { width: min(78%, 320px); margin-top: 8px; }
  .cover figcaption { font-size: 14px; }
  .hero-foot { margin-top: 12px; padding-block: 20px; font-size: 12px; }
  .hero-foot span:last-child { display: none; }
  .thesis-grid, .editions-heading, .delivery, .faq-section { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .thesis-copy { padding: 0; }
  .section-heading { margin-bottom: 32px; }
  .section-intro { margin-top: 22px; }
  .principles { grid-template-columns: minmax(0, 1fr); }
  .principle-number { margin-bottom: 24px; }
  .question-mark { display: none; }
  .big-question { font-size: clamp(34px, 7vw, 52px); }
  .editions-heading { gap: 24px; }
  .editions-heading .section-intro { max-width: 45ch; }
  .edition-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .edition-card { padding: 28px; }
  .edition-card h3 { font-size: 34px; }
  .price { font-size: 23px; }
  .faq-section { padding-top: 0; }
  .faq-heading h2 br { display: none; }
  .faq-answer { padding-right: 16px; }
  .site-footer { align-items: flex-start; flex-direction: column; gap: 8px; font-size: 14px; }
}

@media (max-width: 360px) {
  .brand { font-size: 13px; gap: 5px; }
  .brand-mark { width: 20px; height: 20px; }
  .nav-cta { font-size: 14px; padding-inline: 10px; }
  .nav-cta span { display: none; }
  .edition-card { padding: 24px; }
  .specs div { font-size: 15px; }
  .price { font-size: 21px; }
}

/* Enlarged text may wrap every control; layout must grow rather than clip it. */
.hero-copy, .section-heading, .thesis-grid > *, .delivery > *, .faq-section > * { min-width: 0; }
h1, h2, h3, h4, p, a, button, dt, dd, summary { overflow-wrap: anywhere; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .button-primary:hover { transform: none; }
}

/* Pacote: curso + brochura; capa dura avulsa. */
.hardcover-card { margin-top: 24px; }
.hero-bundle { margin-top: 24px; color: var(--yellow); font-size: 17px; font-weight: 600; max-width: 34ch; }
.hero-price { margin-top: 14px; font-size: 27px; font-weight: 650; }
.hero-price span { display: block; font-size: 14px; font-weight: 500; color: var(--muted); }
.bundle-content h4 { margin: 30px 0 12px; font-size: 22px; line-height: 1.25; letter-spacing: -.03em; }
.bundle-content > p:not(.edition-platform) { color: #414449; }
.course-status { font-size: 16px; }
.offer-card { display: flex; flex-direction: column; border-color: #a94a10; }
.offer-card .edition-purchase { margin-top: 28px; }
.offer-price { font-size: clamp(46px, 5vw, 70px); letter-spacing: -.055em; }
.future-price { margin-top: 14px; color: #5e6165; font-size: 16px; }
.price-explanation { margin-top: 18px; color: #414449; font-size: 16px; }
.offer-schedule { margin-top: auto; padding-top: 32px; color: #414449; font-size: 16px; }
.offer-schedule strong { color: #090a0b; }
@media (max-width: 700px) { .hero-bundle { font-size: 16px; } .hero-price { font-size: 26px; } .offer-schedule { margin-top: 10px; } }