/* ============================================
   O MÉTODO RC — Landing Page Styles
   Paleta: Navy #1a2f4e | Teal #2a7f6f | Gold #c9a84c | Off-white #f7f5f0
   ============================================ */

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:       #1a2f4e;
  --navy-dark:  #111f33;
  --teal:       #2a7f6f;
  --teal-light: #3a9e8b;
  --gold:       #c9a84c;
  --gold-light: #e0c170;
  --off-white:  #f7f5f0;
  --white:      #ffffff;
  --text:       #2c2c2c;
  --text-muted: #6b7280;
  --border:     #e2ddd6;

  /* Sora para títulos e impacto (converte melhor em finanças/investimento) */
  --font-display: 'Sora', 'Inter', system-ui, sans-serif;
  --font-sans:    'Inter', system-ui, sans-serif;
  /* Merriweather reservada à capa do livro e à citação — nota editorial */
  --font-serif:   'Merriweather', Georgia, serif;

  --radius:     8px;
  --radius-lg:  16px;
  --shadow:     0 4px 24px rgba(26, 47, 78, 0.10);
  --shadow-lg:  0 12px 48px rgba(26, 47, 78, 0.18);

  --max-w: 1100px;
  --section-py: 80px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- ACESSIBILIDADE ---------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  color: var(--navy);
  text-align: center;
  margin-bottom: 16px;
}

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

.section-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto 48px;
}

.badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  background: rgba(42, 127, 111, 0.10);
  border: 1px solid rgba(42, 127, 111, 0.25);
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: 20px;
}

.badge--dark {
  color: var(--gold);
  background: rgba(201, 168, 76, 0.12);
  border-color: rgba(201, 168, 76, 0.30);
}

/* ---------- SCROLL REVEAL ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-position 0.5s ease;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn--sm   { font-size: 0.85rem; padding: 8px 18px; }
.btn--lg   { font-size: 1rem;    padding: 14px 28px; }
.btn--full { width: 100%; }

.btn--primary {
  color: var(--white);
  border-color: transparent;
  background: linear-gradient(115deg, var(--teal) 0%, var(--teal-light) 45%, var(--gold) 100%);
  background-size: 220% 220%;
  background-position: 0% 50%;
  box-shadow: 0 4px 18px rgba(42, 127, 111, 0.28);
}
.btn--primary:hover {
  background-position: 100% 50%;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(42, 127, 111, 0.40);
}

.btn--ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn--ghost:hover {
  background: var(--navy);
  color: var(--white);
  transform: translateY(-2px);
}

/* ---------- NAVBAR ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 47, 78, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.navbar__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--white);
  letter-spacing: 0.01em;
  flex-shrink: 0;
}

.navbar__logo strong { color: var(--gold); }

.navbar__logo-sub {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.68rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.02em;
  margin-left: 2px;
}

@media (max-width: 900px) {
  .navbar__logo-sub { display: none; }
}

.navbar__links {
  display: flex;
  gap: 24px;
  flex: 1;
  justify-content: center;
}

.navbar__links a {
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color 0.15s;
}

.navbar__links a:hover { color: var(--gold-light); }

@media (max-width: 760px) {
  .navbar__links { display: none; }
}

/* ============================================
   HERO — com fundo geométrico 3D
   ============================================ */
.hero {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 60%, #1e3d5c 100%);
  color: var(--white);
  padding: 90px 0 100px;
  overflow: hidden;
  position: relative;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201,168,76,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,168,76,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  transform: perspective(600px) rotateX(30deg) scaleY(1.6) translateY(-10%);
  transform-origin: center top;
  opacity: 0.6;
}

.hero__glow {
  position: absolute;
  top: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(201,168,76,0.10) 0%, rgba(42,127,111,0.06) 40%, transparent 70%);
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(42,127,111,0.08) 0%, transparent 65%);
  pointer-events: none;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), rgba(201,168,76,0.3), transparent);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
}

.hero__text { max-width: 560px; }

.hero__pain {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gold-light);
  margin-bottom: 12px;
  letter-spacing: 0.01em;
}

.hero__text h1 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: clamp(2.1rem, 4.5vw, 3.1rem);
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--white);
}

.hero__sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero__cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero .btn--ghost {
  color: rgba(255,255,255,0.85);
  border-color: rgba(255,255,255,0.40);
}
.hero .btn--ghost:hover {
  background: rgba(255,255,255,0.12);
  color: var(--white);
  border-color: rgba(255,255,255,0.70);
}

/* ============================================
   BOOK MOCKUP 3D — INTERATIVO (tilt via JS)
   ============================================ */
.hero__mockup {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-scene {
  perspective: 900px;
  perspective-origin: 55% 50%;
  position: relative;
  padding: 0 16px 32px 24px;
}

.book-wrap {
  position: relative;
  width: 190px;
  height: 272px;
  transform-style: preserve-3d;
  transform: rotateY(-22deg) rotateX(4deg);
  transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

/* Fallback CSS hover (usado quando JS/tilt está desactivado) */
@media (hover: hover) {
  .book-scene:not(.has-tilt-js):hover .book-wrap {
    transform: rotateY(-10deg) rotateX(2deg) translateY(-6px);
  }
}

.book-back {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #0d1a2b 0%, #0a1520 100%);
  border-radius: 2px 6px 6px 2px;
  transform: translateZ(-8px);
}

.book-pages {
  position: absolute;
  top: 2px;
  right: -7px;
  width: 8px;
  height: calc(100% - 4px);
  background: repeating-linear-gradient(
    180deg,
    #e8e4dc 0px,
    #e8e4dc 1.5px,
    #d4cfc7 1.5px,
    #d4cfc7 3px
  );
  border-radius: 0 2px 2px 0;
  transform-style: preserve-3d;
  transform: rotateY(90deg) translateZ(4px);
  transform-origin: left center;
}

.book-spine {
  position: absolute;
  top: 0;
  left: -18px;
  width: 18px;
  height: 100%;
  background: linear-gradient(90deg, #060e18 0%, #0f1f33 50%, #1a2f4e 100%);
  border-radius: 3px 0 0 3px;
  transform-style: preserve-3d;
  transform: rotateY(-90deg) translateZ(0px);
  transform-origin: right center;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.book-spine::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  left: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(201,168,76,0.3), var(--gold));
}

.book-spine__text {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  font-family: var(--font-sans);
  font-size: 0.48rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: rgba(201,168,76,0.75);
  text-transform: uppercase;
  white-space: nowrap;
}

.book-cover {
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, #1e3555 0%, #152540 40%, #0f1d30 100%);
  border-radius: 2px 6px 6px 2px;
  transform: translateZ(0px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(201,168,76,0.18);
}

.book-cover__bar {
  height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--teal-light), rgba(201,168,76,0.4));
  flex-shrink: 0;
}

.book-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201,168,76,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,168,76,0.03) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
}

.book-cover::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 120px; height: 120px;
  background: radial-gradient(circle at 20% 20%, rgba(201,168,76,0.09) 0%, transparent 70%);
  pointer-events: none;
}

.book-cover__inner {
  flex: 1;
  padding: 16px 16px 0;
  position: relative;
  z-index: 1;
}

.book-cover__label {
  font-family: var(--font-sans);
  font-size: 0.50rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: 0.85;
  margin-bottom: 8px;
}

.book-cover__title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 0;
}

.book-cover__rc {
  display: block;
  font-size: 2.6rem;
  color: var(--gold);
  line-height: 1;
  margin-top: 2px;
  letter-spacing: -0.02em;
}

.book-cover__subtitle {
  font-size: 0.58rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.55;
  margin-top: 10px;
}

.book-cover__divider {
  width: 36px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin: 12px 0;
}

.book-cover__topics {
  font-size: 0.55rem;
  color: rgba(255,255,255,0.40);
  line-height: 1.7;
}

.book-cover__page-hint {
  position: absolute;
  top: 4px; bottom: 4px;
  right: -2px;
  width: 6px;
  background: linear-gradient(90deg, #c8c3bb, #e0dbd3);
  border-radius: 0 2px 2px 0;
  opacity: 0;
  transform: translateX(3px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  z-index: 2;
}

.book-scene:hover .book-cover__page-hint {
  opacity: 1;
  transform: translateX(5px);
}

.book-cover__footer {
  font-size: 0.52rem;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: rgba(201,168,76,0.55);
  text-align: center;
  border-top: 1px solid rgba(201,168,76,0.12);
  padding: 8px 16px;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.book-shadow {
  position: absolute;
  bottom: -8px;
  left: 10%;
  right: -5%;
  height: 28px;
  background: radial-gradient(ellipse, rgba(0,0,0,0.45) 0%, transparent 75%);
  filter: blur(8px);
  transform: scaleX(0.9);
  transition: transform 0.35s ease, opacity 0.35s ease;
}

.book-scene:hover .book-shadow {
  transform: scaleX(0.75) translateY(6px);
  opacity: 0.7;
}

/* ============================================
   PROBLEMA / DOR + PAINEL DE ANÁLISE
   ============================================ */
.problem {
  padding: var(--section-py) 0;
  background: var(--navy);
}

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

.problem__layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
  margin: 40px 0 36px;
}

.problem__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.problem__item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 0.2s;
}

.problem__item:hover { background: rgba(255,255,255,0.08); }

.problem__icon { font-size: 1.5rem; }

.problem__item p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.70);
  line-height: 1.65;
}

.problem__bridge {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  font-size: 1rem;
  color: var(--gold-light);
  font-style: italic;
  line-height: 1.7;
}

/* ---------- PAINEL 3D DE ANÁLISE FINANCEIRA ---------- */
.analysis-panel {
  position: relative;
  perspective: 800px;
}

.analysis-panel__surface {
  background: linear-gradient(145deg, #1e2e42 0%, #162336 100%);
  border: 1px solid rgba(201,168,76,0.20);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  transform: rotateY(-6deg) rotateX(3deg);
  transform-style: preserve-3d;
  box-shadow:
    0 20px 60px rgba(0,0,0,0.50),
    0 0 0 1px rgba(201,168,76,0.08),
    inset 0 1px 0 rgba(255,255,255,0.06);
  transition: transform 0.4s ease;
}

@media (hover: hover) {
  .analysis-panel:hover .analysis-panel__surface {
    transform: rotateY(-2deg) rotateX(1deg);
  }
}

.analysis-panel__header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.analysis-panel__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}
.analysis-panel__dot--red    { background: #ff5f57; }
.analysis-panel__dot--yellow { background: #febc2e; }
.analysis-panel__dot--green  { background: #28c840; }

.analysis-panel__title {
  font-size: 0.72rem;
  font-weight: 600;
  color: rgba(255,255,255,0.60);
  margin-left: 6px;
  flex: 1;
}

.analysis-panel__note {
  font-size: 0.65rem;
  color: var(--gold);
  opacity: 0.70;
  font-style: italic;
}

.analysis-panel__body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ap-metrics {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.ap-metric {
  display: grid;
  grid-template-columns: 80px 1fr 36px;
  align-items: center;
  gap: 8px;
}

.ap-metric__label {
  font-size: 0.68rem;
  font-weight: 600;
  color: rgba(255,255,255,0.55);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.ap-metric__bar-wrap {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
  overflow: hidden;
}

.ap-metric__bar {
  height: 100%;
  border-radius: 99px;
  animation: bar-grow 1.2s cubic-bezier(0.4,0,0.2,1) both;
}

.ap-metric__bar--roe  { width: 72%; background: linear-gradient(90deg, var(--teal), var(--teal-light)); }
.ap-metric__bar--roic { width: 56%; background: linear-gradient(90deg, var(--teal), #4db8a6); }
.ap-metric__bar--fcf  { width: 38%; background: linear-gradient(90deg, var(--gold), var(--gold-light)); }
.ap-metric__bar--debt { width: 42%; background: linear-gradient(90deg, #7c8fa6, #a0b3c7); }

.ap-metric__value {
  font-size: 0.70rem;
  font-weight: 700;
  color: rgba(255,255,255,0.80);
  text-align: right;
}

@keyframes bar-grow {
  from { width: 0; opacity: 0; }
  to   { opacity: 1; }
}

.ap-valuation {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 14px;
}

.ap-valuation__label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.40);
  margin-bottom: 10px;
}

.ap-scenarios {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
  margin-bottom: 10px;
}

.ap-scenario {
  border-radius: var(--radius);
  padding: 8px 6px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ap-scenario--bear { background: rgba(100,120,140,0.20); border: 1px solid rgba(100,120,140,0.30); }
.ap-scenario--base { background: rgba(42,127,111,0.22);  border: 1px solid rgba(42,127,111,0.40); }
.ap-scenario--bull { background: rgba(201,168,76,0.15);  border: 1px solid rgba(201,168,76,0.30); }

.ap-scenario__name {
  font-size: 0.60rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: rgba(255,255,255,0.50);
}

.ap-scenario--base  .ap-scenario__name { color: var(--teal-light); }
.ap-scenario--bull  .ap-scenario__name { color: var(--gold-light); }

.ap-scenario__val {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--white);
}

.ap-price-line {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  flex-wrap: wrap;
}

.ap-price-line__label {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.45);
  flex: 1;
}

.ap-price-line__value {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
}

.ap-price-line__tag {
  font-size: 0.60rem;
  color: var(--teal-light);
  font-weight: 600;
  white-space: nowrap;
}

.analysis-panel__glare {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, transparent 50%);
  pointer-events: none;
}

.analysis-panel__shadow {
  position: absolute;
  bottom: -20px;
  left: 5%; right: 5%;
  height: 20px;
  background: radial-gradient(ellipse, rgba(0,0,0,0.45) 0%, transparent 75%);
  filter: blur(10px);
}

/* ============================================
   PARA QUEM É
   ============================================ */
.for-whom {
  padding: var(--section-py) 0;
  background: var(--off-white);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  transform-style: preserve-3d;
  will-change: transform;
}

@media (hover: hover) {
  .card:hover {
    transform: perspective(600px) rotateX(-1deg) rotateY(2deg) translateY(-5px);
    box-shadow: var(--shadow-lg);
  }
}

.card__icon { font-size: 1.8rem; margin-bottom: 14px; }

.card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--navy);
  margin-bottom: 10px;
}

.card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.65; }

/* ============================================
   CONFIANÇA + STATS
   ============================================ */
.trust-section {
  padding: var(--section-py) 0;
  background: var(--white);
}

.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 780px;
  margin: 0 auto 48px;
}

.stat {
  text-align: center;
  padding: 20px 12px;
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.1rem;
  color: var(--teal);
  line-height: 1;
  margin-bottom: 6px;
}

.stat__label {
  font-size: 0.76rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.trust-item {
  text-align: center;
  padding: 32px 24px;
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

@media (hover: hover) {
  .trust-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
  }
}

.trust-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.trust-item h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--navy);
  margin-bottom: 12px;
}

.trust-item p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================
   CITAÇÃO
   ============================================ */
.quote-section {
  padding: var(--section-py) 0;
  background: var(--off-white);
  text-align: center;
}

.quote-section blockquote {
  max-width: 700px;
  margin: 0 auto 20px;
}

.quote-section blockquote p {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-style: italic;
  color: var(--navy);
  line-height: 1.45;
  margin-bottom: 12px;
}

.quote-section blockquote cite {
  font-style: normal;
  font-size: 0.9rem;
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.quote-context {
  max-width: 580px;
  margin: 0 auto;
  color: var(--text-muted);
  font-size: 0.97rem;
  line-height: 1.7;
}

/* ============================================
   O QUE VAIS APRENDER
   ============================================ */
.learn {
  padding: var(--section-py) 0;
  background: var(--white);
}

.learn__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 16px;
}

.learn__part {
  background: var(--off-white);
  border: 1px solid var(--border);
  border-top: 3px solid var(--teal);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

@media (hover: hover) {
  .learn__part:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
  }
}

.learn__part-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--teal);
  display: block;
  margin-bottom: 6px;
}

.learn__part h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--navy);
  margin-bottom: 16px;
}

.learn__part ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.learn__part ul li {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}

.learn__part ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--teal);
  font-size: 0.8rem;
}

/* ============================================
   ÍNDICE COMPLETO (accordion)
   ============================================ */
.index-full {
  padding: var(--section-py) 0;
  background: var(--off-white);
}

.index-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.index-part {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.index-part summary {
  padding: 18px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  list-style: none;
  user-select: none;
  transition: background 0.15s ease;
}

.index-part summary::-webkit-details-marker { display: none; }
.index-part summary:hover { background: rgba(42,127,111,0.05); }

.index-part summary::after {
  content: '+';
  margin-left: auto;
  font-size: 1.2rem;
  color: var(--teal);
  transition: transform 0.2s ease;
}

.index-part[open] summary::after { transform: rotate(45deg); }

.index-part__label {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--teal);
  background: rgba(42,127,111,0.10);
  padding: 4px 10px;
  border-radius: 99px;
  flex-shrink: 0;
}

.index-part__title {
  font-weight: 700;
  color: var(--navy);
  font-size: 0.98rem;
}

.index-part__count {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-left: auto;
  padding-right: 4px;
}

.index-part ol {
  list-style: decimal;
  padding: 0 20px 20px 46px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.index-part ol.index-part__anexos {
  list-style: none;
  padding-left: 20px;
}

.index-part ol li {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.5;
}

.index-part__note {
  padding: 0 20px 18px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ============================================
   CTA INTERMÉDIO
   ============================================ */
.cta-mid {
  background: linear-gradient(90deg, var(--teal), #1f6b5c);
  padding: 48px 0;
}

.cta-mid__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  flex-wrap: wrap;
}

.cta-mid__label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.70);
  margin-bottom: 8px;
  display: block;
}

.cta-mid__text h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  color: var(--white);
  max-width: 560px;
  line-height: 1.4;
}

.cta-mid .btn--primary {
  background: var(--white);
  color: var(--teal);
  border-color: var(--white);
  flex-shrink: 0;
  box-shadow: none;
}

.cta-mid .btn--primary:hover {
  background: var(--off-white);
  color: var(--navy);
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
}

/* ============================================
   PILARES — ícones isométricos
   ============================================ */
.pillars {
  padding: var(--section-py) 0;
  background: linear-gradient(135deg, var(--navy-dark), var(--navy));
}

.pillars__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.pillar {
  text-align: center;
  padding: 40px 28px 36px;
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.04);
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}

.pillar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(201,168,76,0.4), transparent);
}

@media (hover: hover) {
  .pillar:hover {
    background: rgba(255,255,255,0.07);
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(0,0,0,0.25);
  }
}

.pillar__iso {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.iso-cube {
  width: 54px;
  height: 54px;
  position: relative;
  transform-style: preserve-3d;
  transform: rotateX(30deg) rotateZ(-45deg);
  transition: transform 0.35s ease;
}

@media (hover: hover) {
  .pillar:hover .iso-cube {
    transform: rotateX(30deg) rotateZ(-45deg) rotateY(20deg);
  }
}

.iso-cube__face {
  position: absolute;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(201,168,76,0.35);
}

.iso-cube__face--top {
  background: linear-gradient(135deg, rgba(201,168,76,0.25), rgba(201,168,76,0.10));
  transform: rotateX(90deg) translateZ(18px);
  top: 9px; left: 9px;
}

.iso-cube__face--left {
  background: linear-gradient(180deg, rgba(42,127,111,0.20), rgba(42,127,111,0.08));
  transform: rotateY(-90deg) translateZ(9px) translateX(-9px);
  top: 9px; left: 0;
  width: 18px;
}

.iso-cube__face--right {
  background: linear-gradient(180deg, rgba(42,127,111,0.30), rgba(42,127,111,0.12));
  top: 9px; left: 9px;
  border-color: rgba(42,127,111,0.40);
  display: flex;
  align-items: center;
  justify-content: center;
}

.iso-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  width: 26px;
  height: 26px;
}

.iso-grid span {
  background: rgba(42,127,111,0.55);
  border-radius: 1px;
}

.iso-grid span:nth-child(2),
.iso-grid span:nth-child(6) { background: var(--gold); opacity: 0.8; }

.iso-shield {
  position: relative;
  width: 44px;
  height: 52px;
  transition: transform 0.35s ease;
}

@media (hover: hover) {
  .pillar:hover .iso-shield {
    transform: scale(1.08) translateY(-2px);
  }
}

.iso-shield__body {
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, rgba(42,127,111,0.55) 0%, rgba(26,47,78,0.60) 100%);
  border: 1.5px solid rgba(42,127,111,0.55);
  clip-path: polygon(50% 0%, 100% 20%, 100% 60%, 50% 100%, 0% 60%, 0% 20%);
}

.iso-shield__side {
  position: absolute;
  top: 4px; left: -4px;
  width: 44px;
  height: 52px;
  background: rgba(15,30,50,0.60);
  clip-path: polygon(50% 0%, 100% 20%, 100% 60%, 50% 100%, 0% 60%, 0% 20%);
  transform: translateX(-3px) translateY(3px);
  z-index: -1;
}

.iso-shield__accent {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 14px;
  height: 14px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  opacity: 0.75;
}

.iso-shield__accent::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  opacity: 0.85;
}

.iso-layers {
  position: relative;
  width: 50px;
  height: 46px;
  transition: transform 0.35s ease;
}

@media (hover: hover) {
  .pillar:hover .iso-layers {
    transform: translateY(-4px);
  }
}

.iso-layer {
  position: absolute;
  width: 50px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid rgba(255,255,255,0.12);
  transition: transform 0.35s ease;
}

.iso-layer--1 {
  bottom: 0;
  background: linear-gradient(90deg, rgba(42,127,111,0.60), rgba(42,127,111,0.30));
  border-color: rgba(42,127,111,0.50);
  width: 50px;
}

.iso-layer--2 {
  bottom: 14px;
  width: 40px;
  left: 5px;
  background: linear-gradient(90deg, rgba(201,168,76,0.45), rgba(201,168,76,0.20));
  border-color: rgba(201,168,76,0.40);
}

.iso-layer--3 {
  bottom: 28px;
  width: 28px;
  left: 11px;
  background: linear-gradient(90deg, rgba(255,255,255,0.25), rgba(255,255,255,0.10));
  border-color: rgba(255,255,255,0.22);
}

@media (hover: hover) {
  .pillar:hover .iso-layer--1 { transform: translateY(2px); }
  .pillar:hover .iso-layer--2 { transform: translateY(0px); }
  .pillar:hover .iso-layer--3 { transform: translateY(-4px); }
}

.pillar__letter {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2rem;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 10px;
  display: block;
}

.pillar__letter--accent { color: var(--teal-light); }

.pillar h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--white);
  margin-bottom: 10px;
}

.pillar p {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.62);
  line-height: 1.7;
}

/* ============================================
   COMPARAÇÃO COM ALTERNATIVAS
   ============================================ */
.compare {
  padding: var(--section-py) 0;
  background: var(--white);
}

.compare__table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.compare__table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
  font-size: 0.88rem;
}

.compare__table th,
.compare__table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.compare__table thead th {
  background: var(--navy);
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
}

.compare__table thead th.compare__highlight {
  background: var(--teal);
}

.compare__table tbody th {
  font-weight: 600;
  color: var(--navy);
  background: var(--off-white);
  white-space: nowrap;
}

.compare__table tbody td {
  color: var(--text-muted);
}

.compare__table tbody td.compare__highlight {
  color: var(--navy);
  font-weight: 700;
  background: rgba(42,127,111,0.06);
}

.compare__table tbody tr:last-child td,
.compare__table tbody tr:last-child th { border-bottom: none; }

/* ============================================
   O QUE ESTÁ INCLUÍDO
   ============================================ */
.includes {
  padding: var(--section-py) 0;
  background: var(--off-white);
}

.includes__list {
  list-style: none;
  max-width: 680px;
  margin: 40px auto 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.includes__list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 1rem;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: 0 2px 8px rgba(26,47,78,0.06);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

@media (hover: hover) {
  .includes__list li:hover {
    box-shadow: var(--shadow);
    transform: translateX(4px);
  }
}

.check {
  color: var(--teal);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ============================================
   PREVIEW DO LIVRO (excerto real)
   ============================================ */
.preview {
  padding: var(--section-py) 0;
  background: var(--navy);
}

.preview .section-title { color: var(--white); }
.preview .section-sub { color: rgba(255,255,255,0.55); }

.preview__frame {
  max-width: 640px;
  margin: 0 auto;
}

.preview__page {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.preview__page::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--teal), var(--gold));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.preview__eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 16px;
}

.preview__body {
  font-family: var(--font-serif);
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 16px;
}

.preview__body--insight {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-style: normal;
  background: rgba(201,168,76,0.10);
  border-left: 3px solid var(--gold);
  padding: 12px 16px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 0;
}

/* ============================================
   TRATAMENTO DE OBJEÇÕES
   ============================================ */
.objections {
  padding: var(--section-py) 0;
  background: var(--off-white);
}

.objections__grid {
  max-width: 800px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.objection {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.objection summary {
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--navy);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  user-select: none;
  transition: background 0.15s ease;
}

.objection summary::-webkit-details-marker { display: none; }

.objection summary::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--teal);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.objection[open] summary::after { transform: rotate(45deg); }
.objection summary:hover { background: rgba(42,127,111,0.05); }

.objection p {
  padding: 0 20px 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================
   SOBRE O AUTOR
   ============================================ */
.author {
  padding: var(--section-py) 0;
  background: var(--white);
}

.author__content {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 48px;
  align-items: start;
  margin-top: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.author__avatar {
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  border: 3px solid var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow);
}

.author__avatar-initials {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2rem;
  color: var(--white);
  letter-spacing: 0.05em;
}

.author__bio {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.author__intro {
  font-size: 1.05rem;
  color: var(--text);
}

.author__bio p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.author__contact {
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 0.9rem !important;
}

.author__contact a {
  color: var(--teal);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 2px solid var(--teal);
  transition: color 0.15s, border-color 0.15s;
}

.author__contact a:hover {
  color: var(--navy);
  border-color: var(--navy);
}

.author__note {
  background: var(--off-white);
  border-left: 3px solid var(--teal);
  padding: 16px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.author__note em {
  color: var(--navy);
  font-style: italic;
}

/* ============================================
   COMPRA
   ============================================ */
.buy {
  padding: var(--section-py) 0;
  background: var(--off-white);
}

.buy__box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: center;
  padding: 48px;
  max-width: 920px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.buy__box::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--teal), var(--gold));
}

.buy__left {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.buy__left h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  color: var(--navy);
  line-height: 1.3;
}

.buy__left > p {
  color: var(--text-muted);
  font-size: 0.97rem;
  line-height: 1.65;
}

.buy__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.buy__features li {
  font-size: 0.92rem;
  color: var(--text);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.buy__features li span {
  color: var(--teal);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.buy__anchor {
  font-size: 0.87rem;
  color: var(--text);
  background: rgba(201,168,76,0.08);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 18px;
  line-height: 1.7;
}

.buy__anchor strong {
  color: var(--navy);
  font-weight: 700;
}

.buy__right {
  text-align: center;
  border-left: 1px solid var(--border);
  padding-left: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.buy__price {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.buy__old-price {
  font-size: 1.1rem;
  color: var(--text-muted);
  text-decoration: line-through;
  text-decoration-color: rgba(107,114,128,0.6);
}

.buy__amount {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 3.2rem;
  color: var(--navy);
  line-height: 1;
}

.buy__vat {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.buy__secure {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ============================================
   FAQ
   ============================================ */
.faq {
  padding: var(--section-py) 0;
  background: var(--white);
}

.faq__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin-top: 48px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.faq__item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--off-white);
}

.faq__item summary {
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--navy);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: background 0.15s ease;
}

.faq__item summary::-webkit-details-marker { display: none; }

.faq__item summary::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--teal);
  flex-shrink: 0;
  margin-left: 12px;
  transition: transform 0.2s ease;
}

.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__item summary:hover { background: rgba(42,127,111,0.08); }

.faq__item p {
  padding: 0 20px 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.faq__item p a {
  color: var(--teal);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid var(--teal);
}

.faq__item p a:hover { color: var(--navy); border-color: var(--navy); }

.faq__cta {
  text-align: center;
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.faq__cta p { color: var(--text-muted); font-size: 0.95rem; }
.faq__cta p a { color: var(--teal); font-weight: 600; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.50);
  padding: 48px 0;
  text-align: center;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.footer__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--white);
}

.footer__brand strong { color: var(--gold); }

.footer__links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer__links a {
  color: rgba(255,255,255,0.50);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.15s;
}

.footer__links a:hover { color: var(--gold); }

.footer__legal {
  font-size: 0.76rem;
  max-width: 640px;
  line-height: 1.7;
}

.footer__copy {
  font-size: 0.74rem;
  color: rgba(255,255,255,0.28);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .problem__layout {
    grid-template-columns: 1fr;
  }

  .analysis-panel {
    max-width: 480px;
    margin: 0 auto;
  }

  .analysis-panel__surface {
    transform: rotateY(0deg) rotateX(2deg);
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root { --section-py: 56px; }

  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__mockup {
    order: -1;
  }

  .hero__cta { justify-content: center; }
  .hero__text h1 { font-size: 1.9rem; }

  .problem__grid {
    grid-template-columns: 1fr;
  }

  .hero__grid {
    opacity: 0.35;
  }

  .cta-mid__inner {
    flex-direction: column;
    text-align: center;
    gap: 24px;
  }

  .buy__box {
    grid-template-columns: 1fr;
    padding: 36px 28px;
    gap: 32px;
  }

  .buy__right {
    border-left: none;
    border-top: 1px solid var(--border);
    padding-left: 0;
    padding-top: 32px;
  }

  .preview__page { padding: 28px 22px; }
}

@media (max-width: 480px) {
  .hero { padding: 56px 0 60px; }

  .book-wrap {
    width: 150px;
    height: 214px;
  }

  .book-scene {
    padding: 0 12px 24px 18px;
  }

  .book-cover__rc { font-size: 2rem; }
  .book-cover__title { font-size: 1.1rem; }

  .hero__cta { flex-direction: column; align-items: center; }
  .btn--lg { width: 100%; max-width: 320px; }

  .buy__box { padding: 28px 20px; }

  .faq__grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }

  .author__content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 24px;
  }

  .author__avatar { margin: 0 auto; }

  .analysis-panel__surface {
    transform: none;
  }
}

/* ============================================
   PREFERS-REDUCED-MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .book-wrap,
  .book-shadow,
  .book-cover__page-hint,
  .iso-cube,
  .iso-shield,
  .iso-layers,
  .analysis-panel__surface,
  .card,
  .trust-item,
  .learn__part,
  .pillar,
  .includes__list li,
  .btn--primary {
    transition: none !important;
    transform: none !important;
    animation: none !important;
  }

  .book-wrap {
    transform: rotateY(-18deg) rotateX(4deg) !important;
  }

  .ap-metric__bar {
    animation: none !important;
  }
}