/* ============ TOKENS ============ */
:root{
  --bg:#07090a;
  --bg-alt:#0c100e;
  --panel:#101512;
  --border:rgba(255,255,255,.08);
  --white:#f5f7f6;
  --gray:#9aa39e;
  --gray-dim:#6b746f;
  --green:#25e07a;
  --green-strong:#1bc46a;
  --green-dark:#0c3a25;
  --font-head:'Sora', sans-serif;
  --font-body:'Manrope', sans-serif;
  --container:1180px;
  --radius:18px;
}

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

html{scroll-behavior:smooth;}

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

img{max-width:100%;display:block;}

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

h1,h2,h3{font-family:var(--font-head);line-height:1.15;letter-spacing:-.02em;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.container.narrow{max-width:760px;text-align:center;}

/* ============ REVEAL ANIMATION ============ */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .8s ease, transform .8s ease;
}
.reveal.in-view{opacity:1;transform:translateY(0);}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:16px 32px;
  border-radius:999px;
  font-weight:700;
  font-size:.95rem;
  letter-spacing:.01em;
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
  border:1px solid transparent;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--green) 0%, var(--green-strong) 100%);
  color:#04140b;
  box-shadow:0 8px 30px -6px rgba(37,224,122,.55);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 36px -6px rgba(37,224,122,.7);}
.btn-outline{
  background:transparent;
  border-color:rgba(255,255,255,.25);
  color:var(--white);
}
.btn-outline:hover{border-color:var(--green);color:var(--green);transform:translateY(-3px);}
.btn-lg{padding:19px 44px;font-size:1.05rem;}

.hero-buttons{display:flex;gap:16px;flex-wrap:wrap;margin-top:32px;}
.hero-buttons.center{justify-content:center;}

.micro-trust{
  margin-top:16px;
  font-size:.82rem;
  color:var(--gray);
  font-weight:600;
}

/* ============ BENEFIT LIST ============ */
.benefit-list{list-style:none;}
.benefit-list li{
  position:relative;
  padding-left:32px;
  margin-bottom:12px;
  color:var(--white);
  font-weight:600;
  font-size:.98rem;
}
.benefit-list li::before{
  content:'';
  position:absolute;
  left:0;top:4px;
  width:20px;height:20px;
  border-radius:50%;
  background:rgba(37,224,122,.14) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2325e07a' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 13 4 4 10-10'/%3E%3C/svg%3E") center/12px no-repeat;
  border:1px solid var(--green-dark);
}

/* ============ HEADER ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:20px 0;
  transition:background .35s ease, padding .35s ease, border-color .35s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(7,9,10,.85);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:14px 0;
  border-bottom-color:var(--border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;}
.logo{display:flex;align-items:center;}
.logo-img{height:38px;width:auto;display:block;}
.footer-logo-img{height:46px;width:auto;display:block;}
.nav-links{display:flex;align-items:center;gap:32px;font-size:.92rem;font-weight:600;color:var(--gray);}
.nav-links a{transition:color .2s ease;}
.nav-links a:hover{color:var(--white);}
.nav-cta{
  background:var(--green);
  color:#04140b !important;
  padding:10px 20px;
  border-radius:999px;
  font-weight:700;
}
.nav-cta:hover{background:var(--green-strong);}
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;border:none;cursor:pointer;padding:6px;
}
.nav-toggle span{width:24px;height:2px;background:var(--white);border-radius:2px;transition:transform .3s ease, opacity .3s ease;}

/* ============ HERO ============ */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  padding:150px 0 90px;
  overflow:hidden;
  background:
    linear-gradient(180deg, rgba(7,9,10,.55) 0%, rgba(7,9,10,.92) 75%, var(--bg) 100%),
    url("../img/bg-texture.webp") center top / cover no-repeat;
}
.hero-glow{
  position:absolute;
  inset:-20% -10% auto -10%;
  height:900px;
  background:
    radial-gradient(600px 400px at 20% 20%, rgba(37,224,122,.22), transparent 60%),
    radial-gradient(500px 500px at 85% 15%, rgba(37,224,122,.14), transparent 65%);
  filter:blur(10px);
  pointer-events:none;
  z-index:0;
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:60px;
  align-items:center;
}
.eyebrow{
  display:inline-block;
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--green);
  border:1px solid var(--green-dark);
  background:rgba(37,224,122,.08);
  padding:8px 14px;
  border-radius:999px;
  margin-bottom:22px;
}
.hero-text h1{
  font-size:clamp(2.8rem,6vw,4.4rem);
  font-weight:800;
  color:var(--white);
}
.on-highlight{
  color:var(--green);
  text-shadow:0 0 40px rgba(37,224,122,.55);
}
.subtitle{
  font-family:var(--font-head);
  font-size:clamp(1.1rem,2vw,1.35rem);
  color:var(--green);
  font-weight:700;
  margin-top:12px;
  max-width:540px;
}
.hero-benefits{margin-top:28px;max-width:520px;}

/* ---- Book mockup (frente + segunda cópia 50% visível atrás) ---- */
.hero-visual{display:flex;justify-content:center;position:relative;}
.book-pair{
  position:relative;
  width:410px;
  max-width:92vw;
  height:540px;
  perspective:1600px;
}
.book-glow{
  position:absolute;
  inset:-30px;
  background:radial-gradient(circle, rgba(37,224,122,.3), transparent 70%);
  filter:blur(28px);
  z-index:0;
  animation:pulseGlow 4s ease-in-out infinite;
}
@keyframes pulseGlow{
  0%,100%{opacity:.6;transform:scale(1);}
  50%{opacity:1;transform:scale(1.05);}
}
.book-photo{
  position:absolute;
  height:auto;
  transition:transform .5s ease;
}
.book-photo-front{
  z-index:2;
  left:0;
  bottom:0;
  width:280px;
  filter:drop-shadow(0 28px 42px rgba(0,0,0,.65));
  transform:rotateY(-10deg);
  transform-origin:left center;
}
.book-photo-back{
  z-index:1;
  left:156px;
  bottom:4%;
  width:240px;
  filter:drop-shadow(0 22px 34px rgba(0,0,0,.55)) brightness(.78);
  transform:rotateY(-10deg);
  transform-origin:left center;
}
.book-pair:hover .book-photo-front{transform:rotateY(-4deg) translateY(-4px);}
.book-pair:hover .book-photo-back{transform:rotateY(-4deg);}

.scroll-hint{
  position:absolute;
  bottom:28px;left:50%;
  transform:translateX(-50%);
  width:26px;height:42px;
  border:2px solid rgba(255,255,255,.25);
  border-radius:999px;
  z-index:2;
}
.scroll-hint span{
  position:absolute;
  top:8px;left:50%;
  width:4px;height:8px;
  background:var(--green);
  border-radius:99px;
  transform:translateX(-50%);
  animation:scrollDot 1.8s ease infinite;
}
@keyframes scrollDot{
  0%{opacity:1;top:8px;}
  70%{opacity:0;top:22px;}
  100%{opacity:0;top:8px;}
}
@media (max-height:700px){.scroll-hint{display:none;}}

/* ============ TRUST BAR ============ */
.trust-bar{
  background:var(--bg-alt);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:16px 0;
}
.trust-inner{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:22px;
  flex-wrap:wrap;
  font-size:.88rem;
  font-weight:600;
  color:var(--gray);
  text-align:center;
}
.trust-inner span{display:inline-flex;align-items:center;gap:8px;}
.trust-sep{
  width:4px;height:4px;
  border-radius:50%;
  background:var(--green);
  opacity:.6;
}
.trust-icon{
  width:17px;height:17px;
  flex:none;
  fill:none;
  stroke:var(--green);
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
}

/* ============ SECTIONS GENERIC ============ */
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-alt);}
.section-tag{
  display:block;
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--green);
  text-transform:uppercase;
  margin-bottom:16px;
}
.center-tag{text-align:center;}
.section h2{
  font-size:clamp(1.9rem,3.4vw,2.5rem);
  color:var(--white);
  font-weight:700;
  margin-bottom:24px;
}
.section-text{
  color:var(--gray);
  font-size:1.05rem;
  max-width:720px;
}
.section-text.center{margin:0 auto 44px;text-align:center;}
.narrow .section-text{margin-left:auto;margin-right:auto;}

/* ============ EMOTIONAL / PROBLEMA ============ */
.section-emotional{
  padding:96px 0;
  text-align:center;
  background:
    linear-gradient(180deg, var(--bg) 0%, rgba(7,9,10,.85) 40%, var(--bg) 100%),
    url("../img/bg-texture.webp") center / cover no-repeat;
}
.emotional-line{
  font-family:var(--font-head);
  font-weight:700;
  font-size:clamp(1.25rem,2.8vw,1.8rem);
  color:var(--gray);
  max-width:640px;
  margin:0 auto 34px;
  line-height:1.4;
}
.emotional-line-final{
  color:var(--green);
  text-shadow:0 0 30px rgba(37,224,122,.35);
  margin-bottom:0;
}
.emotional-bridge{
  margin-top:44px;
  color:var(--white);
  font-size:1.08rem;
  font-weight:600;
}
.emotional-bridge strong{color:var(--green);}

/* ============ SOBRE + BENEFÍCIOS ============ */
.about-grid{
  display:grid;
  grid-template-columns:.8fr 1.2fr;
  gap:56px;
  align-items:center;
}
.about-visual{display:flex;justify-content:center;}
.about-book{
  width:280px;
  height:auto;
  filter:drop-shadow(0 28px 42px rgba(0,0,0,.6));
  transform:rotateY(8deg);
}
.about-text .section-text{margin-bottom:28px;}
.about-text .benefit-list{margin-bottom:32px;}
.pull-quote{
  margin:64px auto 0;
  max-width:640px;
  text-align:center;
  font-family:var(--font-head);
  font-size:clamp(1.2rem,2.4vw,1.5rem);
  font-weight:700;
  color:var(--green);
  text-shadow:0 0 30px rgba(37,224,122,.35);
}

/* ============ GRID / CARDS ============ */
.grid{display:grid;gap:24px;margin-top:20px;}
.grid-5{grid-template-columns:repeat(5,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}

.card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 22px;
  text-align:left;
  transition:transform .3s ease, border-color .3s ease, background .3s ease;
}
.card:hover{
  transform:translateY(-6px);
  border-color:rgba(37,224,122,.4);
  background:#131a16;
}
.card-icon{
  width:44px;height:44px;
  border-radius:12px;
  background:rgba(37,224,122,.1);
  border:1px solid var(--green-dark);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.card-icon svg{
  width:22px;height:22px;
  fill:none;stroke:var(--green);
  stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;
}
.card p{color:var(--white);font-weight:600;font-size:.98rem;}

/* Chapters grid */
.grid-chapters{grid-template-columns:repeat(5,1fr);}
.chapter{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:14px;
  padding:22px 18px;
  display:flex;
  flex-direction:column;
  gap:8px;
  transition:border-color .3s ease, transform .3s ease;
}
.chapter:hover{border-color:rgba(37,224,122,.4);transform:translateY(-4px);}
.chapter-num{
  font-family:var(--font-head);
  font-weight:800;
  font-size:1.2rem;
  color:var(--green);
  opacity:.85;
}
.chapter-title{font-weight:700;font-size:.95rem;color:var(--white);line-height:1.3;}
.chapter-gain{font-size:.8rem;color:var(--gray);font-weight:500;line-height:1.4;}

/* ---- Marquee ticker (só desktop) ---- */
.marquee{
  margin-top:56px;
  overflow:hidden;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:20px 0;
}
.marquee-track{
  display:flex;
  gap:48px;
  width:max-content;
  animation:marqueeScroll 32s linear infinite;
}
.marquee-track span{
  font-family:var(--font-head);
  font-weight:600;
  font-size:.95rem;
  color:var(--gray);
  white-space:nowrap;
}
@keyframes marqueeScroll{
  0%{transform:translateX(0);}
  100%{transform:translateX(-50%);}
}
@media (prefers-reduced-motion: reduce){
  .marquee-track{animation:none;}
}

/* ============ QUOTES ============ */
.section-quotes{position:relative;overflow:hidden;background:var(--bg);}
.quotes-glow{
  height:600px;
  background:radial-gradient(700px 400px at 50% 30%, rgba(37,224,122,.16), transparent 65%);
}
.quotes-grid{
  position:relative;z-index:1;
  margin-top:40px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.quote{
  background:var(--panel);
  border:1px solid var(--border);
  border-left:3px solid var(--green);
  border-radius:14px;
  padding:28px 24px;
  font-family:var(--font-head);
  font-size:1rem;
  font-weight:600;
  color:var(--white);
  font-style:normal;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.quote-tag{
  font-family:var(--font-body);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--green);
}

/* ============ AUTHORS ============ */
.authors-grid{margin-bottom:44px;max-width:760px;margin-left:auto;margin-right:auto;}
.author-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:36px 28px;
  text-align:center;
}
.author-avatar{
  width:84px;height:84px;
  margin:0 auto 18px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--green-dark),#081c12);
  border:1px solid var(--green-dark);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-head);
  font-weight:800;
  font-size:1.4rem;
  color:var(--green);
}
.author-photo{
  width:84px;height:84px;
  margin:0 auto 18px;
  border-radius:50%;
  object-fit:cover;
  border:2px solid var(--green-dark);
}
.author-card h3{color:var(--white);font-size:1.2rem;margin-bottom:6px;}
.author-role{color:var(--gray);font-size:.88rem;}
.authors-bio{max-width:760px;margin-bottom:0;}
.authors-quote{
  margin:40px auto 0;
  max-width:640px;
  text-align:center;
  font-family:var(--font-head);
  font-size:1.05rem;
  font-weight:600;
  color:var(--white);
  font-style:normal;
}
.authors-quote cite{
  display:block;
  margin-top:12px;
  font-style:normal;
  font-family:var(--font-body);
  font-size:.85rem;
  font-weight:700;
  color:var(--green);
}

/* ============ TESTIMONIALS ============ */
.testimonials-grid{margin-top:36px;}
.testimonial{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 24px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.testimonial p{color:var(--white);font-weight:500;font-size:.95rem;line-height:1.6;}
.testimonial-author{display:flex;align-items:center;gap:12px;}
.testimonial-photo{width:44px;height:44px;border-radius:50%;object-fit:cover;}
.testimonial-author strong{display:block;font-size:.9rem;color:var(--white);}
.testimonial-author span{font-size:.8rem;color:var(--gray);}

/* ============ OFERTA ============ */
.cta-section{
  text-align:left;
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(180deg, var(--bg-alt) 0%, rgba(12,16,14,.9) 100%),
    url("../img/bg-texture.webp") center / cover no-repeat;
}
.cta-glow{
  height:700px;
  background:radial-gradient(650px 450px at 50% 40%, rgba(37,224,122,.25), transparent 65%);
}
.offer-heading{text-align:center;margin-bottom:48px;}
.offer-card{
  position:relative;z-index:1;
  display:grid;
  grid-template-columns:.75fr 1.25fr;
  gap:48px;
  align-items:center;
  background:rgba(16,21,18,.88);
  border:1px solid rgba(37,224,122,.25);
  border-radius:24px;
  padding:48px;
  max-width:920px;
  margin:0 auto;
  box-shadow:0 30px 80px -30px rgba(0,0,0,.8);
}
.offer-visual{display:flex;justify-content:center;}
.offer-visual img{
  width:230px;height:auto;
  filter:drop-shadow(0 24px 36px rgba(0,0,0,.6));
}
.offer-details h3{color:var(--white);font-size:1.1rem;margin-bottom:20px;}
.offer-list{margin-bottom:28px;}
.offer-price{
  display:flex;
  align-items:baseline;
  gap:14px;
  flex-wrap:wrap;
  margin-bottom:24px;
}
.offer-price.hidden{display:none;}
.price-old{
  color:var(--gray-dim);
  text-decoration:line-through;
  font-size:1.05rem;
  font-weight:600;
}
.price{
  font-family:var(--font-head);
  font-weight:800;
  font-size:2.4rem;
  color:var(--green);
  text-shadow:0 0 30px rgba(37,224,122,.4);
}
.price-note{font-size:.85rem;color:var(--gray);font-weight:600;}
.offer-details .btn{width:100%;margin-bottom:12px;}
.offer-trust{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
  margin-top:10px;
  font-size:.8rem;
  color:var(--gray);
  font-weight:600;
}
.offer-trust span{display:inline-flex;align-items:center;gap:7px;}
.guarantee{
  position:relative;z-index:1;
  display:flex;
  gap:20px;
  align-items:flex-start;
  max-width:640px;
  margin:40px auto 0;
  background:rgba(16,21,18,.7);
  border:1px solid var(--border);
  border-radius:16px;
  padding:24px 28px;
}
.guarantee-icon{
  flex:none;
  width:48px;height:48px;
  border-radius:12px;
  background:rgba(37,224,122,.1);
  border:1px solid var(--green-dark);
  display:flex;align-items:center;justify-content:center;
  color:var(--green);
}
.guarantee-icon svg{width:26px;height:26px;}
.guarantee strong{color:var(--white);font-size:1rem;}
.guarantee p{color:var(--gray);font-size:.9rem;margin-top:6px;}

/* ============ FAQ ============ */
.faq-list{margin-top:36px;text-align:left;}
.faq-item{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:14px;
  padding:6px 24px;
  margin-bottom:14px;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 0;
  font-weight:700;
  color:var(--white);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex:none;
  width:22px;height:22px;
  border-radius:50%;
  border:1px solid var(--green-dark);
  position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:'';
  position:absolute;
  background:var(--green);
  top:50%;left:50%;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;transition:opacity .2s ease;}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-item p{color:var(--gray);padding-bottom:20px;font-size:.95rem;}

/* ============ CTA FINAL ============ */
.section-final{
  text-align:center;
  background:var(--bg-alt);
}
.section-final .section-text{margin:0 auto;}
.section-final .micro-trust{margin-top:20px;}

/* ============ FOOTER ============ */
.site-footer{
  background:var(--bg);
  border-top:1px solid var(--border);
  padding:56px 0 32px;
}
.footer-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  text-align:left;
}
.footer-brand p{color:var(--gray);font-size:.88rem;margin-top:10px;}
.footer-social{display:flex;gap:12px;}
.social-btn{
  display:flex;align-items:center;gap:8px;
  padding:10px 16px;
  border-radius:999px;
  border:1px solid var(--border);
  color:var(--white);
  font-size:.85rem;
  font-weight:600;
  transition:border-color .2s ease,color .2s ease;
}
.social-btn svg{width:16px;height:16px;fill:currentColor;}
.social-btn:hover{border-color:var(--green);color:var(--green);}
.footer-copy{
  width:100%;
  color:var(--gray-dim);
  font-size:.8rem;
  text-align:center;
  padding-top:28px;
  margin-top:12px;
  border-top:1px solid var(--border);
}

/* ============ BARRA FIXA MOBILE ============ */
.mobile-cta-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:120;
  background:rgba(7,9,10,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--border);
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  align-items:center;
  gap:14px;
  transform:translateY(110%);
  transition:transform .35s ease;
}
.mobile-cta-bar.visible{transform:translateY(0);}
.mobile-cta-price{
  font-family:var(--font-head);
  font-weight:800;
  font-size:1.15rem;
  color:var(--green);
  white-space:nowrap;
}
.mobile-cta-price:empty{display:none;}
.mobile-cta-btn{
  flex:1;
  padding:14px 20px;
  font-size:.92rem;
}

/* ============ RESPONSIVE ============ */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;text-align:center;gap:36px;}
  .hero-text{order:1;}
  .hero-visual{order:2;}
  .subtitle,.hero-benefits{margin-left:auto;margin-right:auto;}
  .hero-benefits{text-align:left;}
  .hero-buttons{justify-content:center;}
  .about-grid{grid-template-columns:1fr;gap:36px;text-align:center;}
  .about-text .benefit-list{text-align:left;max-width:520px;margin-left:auto;margin-right:auto;}
  .grid-5{grid-template-columns:repeat(3,1fr);}
  .grid-chapters{grid-template-columns:repeat(3,1fr);}
  .grid-2{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:1fr;}
  .quotes-grid{grid-template-columns:repeat(2,1fr);}
  .offer-card{grid-template-columns:1fr;gap:32px;padding:36px 28px;text-align:center;}
  .offer-details h3{text-align:left;}
  .offer-list{text-align:left;}
  .offer-price{justify-content:center;}
}

@media (max-width:820px){
  .nav-links{
    position:fixed;
    top:0;right:0;
    height:100vh;
    width:min(78vw,320px);
    background:#0a0e0c;
    border-left:1px solid var(--border);
    flex-direction:column;
    align-items:flex-start;
    justify-content:center;
    gap:26px;
    padding:40px;
    transform:translateX(100%);
    transition:transform .35s ease;
    z-index:99;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-cta{margin-top:8px;}
  .nav-toggle{display:flex;}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle.open span:nth-child(2){opacity:0;}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
}

@media (max-width:640px){
  .hero{padding:120px 0 70px;min-height:auto;}
  .section{padding:72px 0;}
  .section-emotional{padding:72px 0;}
  .grid-5{grid-template-columns:repeat(2,1fr);}
  .grid-chapters{grid-template-columns:1fr 1fr;}

  /* hero mobile: um livro só, menor */
  .book-pair{width:230px;height:330px;}
  .book-photo-front{width:200px;left:50%;transform:translateX(-50%) rotateY(0);transform-origin:center;}
  .book-photo-back{display:none;}
  .book-pair:hover .book-photo-front{transform:translateX(-50%) translateY(-4px);}

  /* trechos: carrossel horizontal com swipe */
  .quotes-grid{
    display:flex;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    gap:16px;
    padding-bottom:12px;
    -webkit-overflow-scrolling:touch;
  }
  .quotes-grid .quote{
    flex:0 0 78vw;
    scroll-snap-align:center;
  }

  /* marquee vira estático discreto */
  .marquee{display:none;}

  .about-book{width:210px;}
  .offer-visual img{width:180px;}
  .offer-card{padding:28px 20px;}
  .price{font-size:2rem;}
  .btn-lg{padding:17px 32px;font-size:.98rem;}
  .guarantee{flex-direction:column;text-align:center;align-items:center;}

  .footer-inner{justify-content:center;text-align:center;}
  .footer-brand{width:100%;}
  .footer-brand .footer-logo-img{margin:0 auto;}

  /* barra fixa aparece */
  .mobile-cta-bar{display:flex;}
  /* respiro para o conteúdo não ficar atrás da barra */
  .site-footer{padding-bottom:110px;}
}