/* ============ RESET & TOKENS ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --black: #0a0a0a;
  --black-soft: #121211;
  --panel: #15140f;
  --panel-2: #1b1a14;
  --gold: #e8b923;
  --gold-bright: #f5cb47;
  --gold-deep: #b8901a;
  --cream: #f3f0e8;
  --cream-dim: #c9c6bd;
  --muted: #8a877d;
  --line: rgba(232, 185, 35, 0.18);
  --line-soft: rgba(243, 240, 232, 0.08);
  --green: #4caf50;
  --red: #e05555;
  --serif: 'Playfair Display', Georgia, serif;
  --mono: 'Space Mono', ui-monospace, monospace;
  --sans: 'Inter', -apple-system, sans-serif;
}

html { scroll-behavior: smooth; }

/* Lenis smooth scroll */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }
.lenis.lenis-smooth iframe { pointer-events: none; }

body {
  font-family: var(--sans);
  background: var(--black);
  color: var(--cream);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img, svg { max-width: 100%; display: block; }
s { color: var(--muted); }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 860px; }
.center { text-align: center; }

.gold { color: var(--gold); }
.gold-text { color: var(--gold-bright); }

/* ============ TYPOGRAPHY ============ */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 18px;
}
.eyebrow.center { display: block; text-align: center; }

.section-title {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(30px, 4.5vw, 54px);
  line-height: 1.08;
  color: var(--cream);
  letter-spacing: -0.01em;
}
.section-title.center { text-align: center; margin-bottom: 28px; }

.lead {
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--cream-dim);
  margin: 18px 0;
}
.lead strong { color: var(--cream); }

/* ============ SECTIONS ============ */
.section { padding: 90px 0; position: relative; }
.section-alt { background: var(--black-soft); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.04em;
  padding: 18px 34px;
  border-radius: 6px;
  cursor: pointer;
  border: none;
  transition: transform .2s ease, box-shadow .25s ease, background .25s ease;
  text-align: center;
}
.btn-arrow { transition: transform .25s ease; }
.btn:hover .btn-arrow { transform: translateX(4px); }
.btn-block { width: 100%; }
.btn-lg { padding: 22px 44px; font-size: 17px; }

.btn-gold {
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  color: #1a1400;
  box-shadow: 0 10px 30px rgba(232, 185, 35, 0.28);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 44px rgba(232, 185, 35, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--gold);
  border: 1.5px solid var(--gold);
}
.btn-outline:hover { background: rgba(232, 185, 35, 0.1); transform: translateY(-2px); }

/* ============ TOPBAR ============ */
.topbar {
  background: linear-gradient(90deg, var(--gold-deep), var(--gold));
  color: #1a1400;
  font-size: 13px;
  font-weight: 600;
  position: relative;
  z-index: 30;
}
.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 9px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}
.topbar-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #1a1400;
  animation: blink 1.2s ease-in-out infinite;
}
@keyframes blink { 50% { opacity: 0.3; } }
.topbar-timer {
  font-family: var(--mono);
  font-weight: 700;
  background: #1a1400;
  color: var(--gold-bright);
  padding: 2px 10px;
  border-radius: 4px;
}

/* ============ HERO ============ */
.hero {
  position: relative;
  padding: 70px 0 80px;
  overflow: hidden;
  background:
    radial-gradient(900px 500px at 85% 10%, rgba(232,185,35,0.10), transparent 60%),
    var(--black);
}
.hero-glow {
  position: absolute;
  top: -120px; right: -120px;
  width: 480px; height: 480px;
  background: radial-gradient(circle, rgba(232,185,35,0.25), transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(38px, 6vw, 70px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}
.hero-title em { font-style: italic; color: var(--gold); }
.hero-sub {
  font-size: clamp(16px, 1.5vw, 19px);
  color: var(--cream-dim);
  max-width: 540px;
  margin-bottom: 24px;
}
.hero-sub strong { color: var(--cream); }
.hero-bullets { list-style: none; margin-bottom: 30px; }
.hero-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 7px 0;
  color: var(--cream-dim);
  font-size: 15px;
}
.check {
  color: var(--gold);
  font-weight: 700;
  flex-shrink: 0;
}
.hero-cta { display: flex; flex-direction: column; gap: 18px; align-items: flex-start; }
.hero-trust {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--muted);
}

/* ----- BOOK MOCKUP ----- */
.hero-book {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  perspective: 1600px;
}
.book {
  position: relative;
  transform: rotateY(-18deg) rotateX(4deg);
  transform-style: preserve-3d;
  transition: transform .25s ease;
  animation: bookFloat 5s ease-in-out infinite;
  will-change: transform;
}
.book:hover { transform: rotateY(-8deg) rotateX(2deg); }
@keyframes bookFloat {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -14px; }
}
.book-cover {
  width: 320px;
  height: 452px;
  background:
    radial-gradient(420px 300px at 80% 12%, rgba(232,185,35,0.12), transparent 55%),
    linear-gradient(160deg, #131210, #0a0a09);
  border: 1px solid rgba(232,185,35,0.25);
  border-radius: 4px 8px 8px 4px;
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  box-shadow:
    0 40px 80px rgba(0,0,0,0.6),
    inset 0 1px 0 rgba(255,255,255,0.06);
  position: relative;
}
.bc-badge {
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.22em;
  color: var(--gold);
  border: 1px solid var(--gold-deep);
  padding: 5px 9px;
  border-radius: 3px;
  align-self: flex-start;
  margin-bottom: 26px;
}
.bc-title { display: flex; flex-direction: column; line-height: 0.98; }
.bc-50 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 64px;
  color: var(--gold);
}
.bc-formas {
  font-family: var(--serif);
  font-weight: 800;
  font-size: 38px;
  color: var(--cream);
  letter-spacing: 0.01em;
}
.bc-proibidas {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 900;
  font-size: 40px;
  color: var(--gold);
  margin: 2px 0;
}
.bc-rest {
  font-family: var(--serif);
  font-weight: 800;
  font-size: 30px;
  color: var(--cream);
  line-height: 1.05;
  margin-top: 2px;
}
.bc-sub {
  font-size: 11px;
  color: var(--cream-dim);
  margin-top: 18px;
  line-height: 1.5;
}
.bc-foot { margin-top: auto; }
.bc-line {
  display: block;
  width: 60%;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin-bottom: 12px;
}
.bc-tag {
  display: block;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin-bottom: 6px;
}
.bc-year {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 22px;
  color: var(--gold);
}
.book-spine {
  position: absolute;
  top: 0; left: -14px;
  width: 14px; height: 100%;
  background: linear-gradient(90deg, #060605, #0f0e0c);
  transform: rotateY(90deg) translateX(-7px);
  transform-origin: right;
  border-radius: 4px 0 0 4px;
}
.book-float {
  position: absolute;
  bottom: -10px; right: 0;
  background: var(--gold);
  color: #1a1400;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: 6px;
  box-shadow: 0 10px 24px rgba(0,0,0,0.4);
  transform: rotate(-4deg);
}

/* ============ STRIP ============ */
.strip {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
  background: var(--black-soft);
}
.strip-label {
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin-bottom: 18px;
}
.strip-items {
  display: flex;
  justify-content: center;
  gap: 14px 34px;
  flex-wrap: wrap;
}
.strip-items span {
  font-family: var(--serif);
  font-style: italic;
  font-size: 20px;
  color: var(--cream-dim);
  opacity: 0.7;
}

/* ============ QUOTE / PUNCH ============ */
.quote-block {
  border-left: 3px solid var(--gold);
  padding: 14px 0 14px 22px;
  margin: 28px 0;
  font-size: clamp(17px, 1.6vw, 21px);
  color: var(--cream);
  font-style: italic;
}
.quote-block strong { color: var(--gold); font-style: normal; }
.punch {
  background: linear-gradient(180deg, var(--panel), var(--black-soft));
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: 8px;
  padding: 24px 28px;
  margin-top: 28px;
  font-size: clamp(17px, 1.7vw, 22px);
  font-family: var(--serif);
  font-style: italic;
  color: var(--cream);
}
.punch strong { color: var(--gold); }

/* ============ SOLUÇÃO ============ */
.solve-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 50px;
  align-items: center;
}
.feature-list { list-style: none; margin-top: 22px; }
.feature-list li {
  position: relative;
  padding: 10px 0 10px 30px;
  color: var(--cream-dim);
  border-bottom: 1px solid var(--line-soft);
}
.feature-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
}
.feature-list strong { color: var(--cream); }
.solve-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.stat-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 26px 18px;
  text-align: center;
}
.stat-num {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 46px;
  color: var(--gold);
  line-height: 1;
}
.stat-label {
  font-size: 12px;
  color: var(--cream-dim);
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ============ PARTS GRID ============ */
.parts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 50px;
}
.part-card {
  background: linear-gradient(180deg, var(--panel), var(--black-soft));
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  padding: 30px 26px;
  transition: transform .3s ease, border-color .3s ease;
  position: relative;
  overflow: hidden;
}
.part-card:hover {
  transform: translateY(-6px);
  border-color: var(--line);
}
.part-num {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 40px;
  color: var(--gold);
  opacity: 0.5;
  line-height: 1;
  margin-bottom: 14px;
}
.part-card h3 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 10px;
  color: var(--cream);
}
.part-card > p {
  font-size: 14px;
  color: var(--cream-dim);
  margin-bottom: 16px;
}
.part-card ul { list-style: none; }
.part-card li {
  font-size: 13.5px;
  color: var(--cream-dim);
  padding: 5px 0 5px 18px;
  position: relative;
}
.part-card li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--gold);
}
.part-card-cta {
  background: linear-gradient(180deg, rgba(232,185,35,0.1), var(--black-soft));
  border-color: var(--line);
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}
.part-card-cta p { margin-bottom: 22px; }
.part-card-cta .btn { align-self: center; }

/* ============ PARA QUEM ============ */
.forwho {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}
.forwho-col {
  background: var(--panel);
  border-radius: 14px;
  padding: 32px 30px;
  border: 1px solid var(--line-soft);
}
.forwho-col.is-yes { border-top: 3px solid var(--gold); }
.forwho-col.is-no { border-top: 3px solid var(--red); opacity: 0.92; }
.forwho-col h3 {
  font-family: var(--serif);
  font-size: 24px;
  margin-bottom: 18px;
}
.forwho-col.is-yes h3 { color: var(--gold); }
.forwho-col.is-no h3 { color: var(--red); }
.forwho-col ul { list-style: none; }
.forwho-col li {
  padding: 9px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--cream-dim);
  font-size: 15px;
}

/* ============ AUTOR ============ */
.author { text-align: center; }
.author-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 0 auto 24px;
  animation: zfloat 4.5s ease-in-out infinite;
}
.zlogo-mark {
  width: 104px; height: 104px;
  flex: 0 0 auto;
  animation: zglow 4.5s ease-in-out infinite;
}
.zlogo-z {
  --len: 122;
  stroke-dasharray: var(--len);
  stroke-dashoffset: var(--len);
  animation: zdraw 4.5s ease-in-out infinite;
}
.zlogo-word {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 52px;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--cream);
  animation: zword 4.5s ease-in-out infinite;
}
@keyframes zdraw {
  0%   { stroke-dashoffset: var(--len); }
  35%  { stroke-dashoffset: 0; }
  78%  { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: var(--len); }
}
@keyframes zword {
  0%   { opacity: 0; transform: translateX(-8px); }
  35%  { opacity: 1; transform: translateX(0); }
  78%  { opacity: 1; transform: translateX(0); }
  100% { opacity: 0; transform: translateX(-8px); }
}
@keyframes zfloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-7px); }
}
@keyframes zglow {
  0%, 100% { filter: drop-shadow(0 14px 30px rgba(232,185,35,0.28)); }
  50%      { filter: drop-shadow(0 18px 42px rgba(232,185,35,0.45)); }
}
@media (prefers-reduced-motion: reduce) {
  .author-logo, .zlogo-mark { animation: none; }
  .zlogo-mark { filter: drop-shadow(0 14px 30px rgba(232,185,35,0.3)); }
  .zlogo-z { stroke-dashoffset: 0; animation: none; }
  .zlogo-word { opacity: 1; transform: none; animation: none; }
}
@media (max-width: 560px) {
  .zlogo-mark { width: 84px; height: 84px; }
  .zlogo-word { font-size: 40px; }
}
.author .eyebrow.center,
.author .eyebrow { text-align: center; }

/* ============ DEPOIMENTOS ============ */
.testi-marquee {
  overflow: hidden;
  margin-top: 40px;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 7%, #000 93%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 7%, #000 93%, transparent);
}
.testi-track {
  display: flex;
  width: max-content;
  animation: testi-scroll 32s linear infinite;
}
.testi-marquee:hover .testi-track { animation-play-state: paused; }
@keyframes testi-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.testi {
  flex: 0 0 360px;
  margin-right: 22px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  padding: 26px;
}
@media (prefers-reduced-motion: reduce) {
  .testi-track { animation: none; }
}
.testi-stars { color: var(--gold); letter-spacing: 2px; margin-bottom: 12px; }
.testi p { font-size: 15px; color: var(--cream-dim); font-style: italic; margin-bottom: 16px; }
.testi-who {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}
.testi-avatar {
  width: 46px; height: 46px;
  border-radius: 50%;
  object-fit: cover;
  flex: 0 0 auto;
  border: 1px solid var(--line-soft);
}
.testi-note {
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  margin-top: 26px;
}

/* ============ OFERTA ============ */
.offer { background:
  radial-gradient(700px 400px at 50% 0%, rgba(232,185,35,0.1), transparent 60%),
  var(--black); }
.offer-box {
  background: linear-gradient(180deg, var(--panel-2), var(--black-soft));
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 48px 44px;
  text-align: center;
  position: relative;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}
.offer-flag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  background: var(--gold);
  color: #1a1400;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 22px;
}
.offer-title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.08;
  margin-bottom: 30px;
}
.offer-stack {
  text-align: left;
  max-width: 460px;
  margin: 0 auto 30px;
}
.stack-item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 15px;
  color: var(--cream-dim);
}
.stack-val { color: var(--gold); font-weight: 600; white-space: nowrap; }
.price { margin: 10px 0 28px; }
.price-from { color: var(--muted); font-size: 15px; }
.price-now {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 4px;
  margin: 4px 0;
}
.price-cur { font-family: var(--serif); font-size: 30px; color: var(--gold); margin-top: 14px; }
.price-val { font-family: var(--serif); font-weight: 900; font-size: 96px; color: var(--gold); line-height: 1; }
.price-install { color: var(--cream-dim); font-size: 14px; }
.offer-badges {
  display: flex;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
  margin-top: 22px;
  font-size: 13px;
  color: var(--muted);
}
.offer-timer { margin-top: 18px; font-size: 14px; color: var(--cream-dim); }
.offer-timer strong { font-family: var(--mono); color: var(--gold); }

/* ============ GARANTIA ============ */
.guarantee {
  display: flex;
  gap: 36px;
  align-items: center;
}
.guarantee-seal {
  flex-shrink: 0;
  width: 130px; height: 130px;
  border-radius: 50%;
  border: 3px dashed var(--gold);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-family: var(--serif);
  font-weight: 900;
  color: var(--gold);
  text-align: center;
}
.guarantee-seal strong { font-size: 46px; font-weight: 900; line-height: 0.72; }
.guarantee-seal span { font-size: 16px; line-height: 1; letter-spacing: 0.2em; text-indent: 0.2em; }

/* ============ FAQ ============ */
.faq { margin-top: 36px; }
.faq-item {
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  margin-bottom: 12px;
  background: var(--panel);
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--cream);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  color: var(--gold);
  font-size: 24px;
  font-weight: 400;
  transition: transform .25s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-body {
  padding: 0 24px 20px;
  color: var(--cream-dim);
  font-size: 15px;
}

/* ============ CTA FINAL ============ */
.final {
  background:
    radial-gradient(800px 400px at 50% 100%, rgba(232,185,35,0.12), transparent 60%),
    var(--black-soft);
}
.final .btn { margin-top: 28px; }
.final-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--muted);
}

/* ============ FOOTER ============ */
.footer {
  background: #060605;
  border-top: 1px solid var(--line-soft);
  padding: 50px 0 30px;
}
.footer-disc p {
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 14px;
  line-height: 1.6;
}
.footer-disc strong { color: var(--cream-dim); }
.footer-bottom {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
}
.footer-links { display: flex; gap: 20px; }
.footer-links a:hover { color: var(--gold); }

/* ============ STICKY MOBILE CTA ============ */
.sticky-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 40;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px;
  background: rgba(10,10,10,0.96);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
}
.sticky-price { font-size: 15px; }
.sticky-price strong { color: var(--gold); font-size: 20px; }
.sticky-cta .btn { padding: 14px 20px; font-size: 14px; }

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 50px; }
  .hero-book { order: -1; }
  .solve-grid { grid-template-columns: 1fr; gap: 36px; }
  .parts-grid { grid-template-columns: 1fr 1fr; }
  .testi { flex-basis: 300px; }
  .forwho { grid-template-columns: 1fr; }
  .guarantee { flex-direction: column; text-align: center; }
}

@media (max-width: 560px) {
  .section { padding: 64px 0; }
  .parts-grid { grid-template-columns: 1fr; }
  .solve-stats { grid-template-columns: 1fr 1fr; }
  .hero-trust { gap: 12px; font-size: 12px; }
  .btn { width: 100%; }
  .hero-cta { align-items: stretch; }
  .sticky-cta { display: flex; }
  body { padding-bottom: 72px; }
  .book-cover { width: 270px; height: 382px; }
  .price-val { font-size: 76px; }
  .offer-box { padding: 36px 22px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}