/* ============================================================
   O Jogo Corporativo do UX — site promocional
   Sistema visual derivado da capa (Pedro Belleza)
   ============================================================ */

:root{
  --paper:        #f5f0e7;   /* fundo principal */
  --paper-2:      #efe8db;   /* painel mais fundo */
  --card:         #fbf8f2;   /* cartões claros */
  --ink:          #16120b;   /* preto quente */
  --ink-2:        #2c2519;   /* texto corpo */
  --ink-soft:     #6b6151;   /* secundário */
  --line:         #d8cfbd;   /* divisórias */
  --line-strong:  #1a160e;
  --amber:        #bf6c11;   /* acento principal */
  --amber-deep:   #9c560a;
  --amber-text:   #9c560a;   /* âmbar para texto pequeno (contraste AA em fundo claro) */
  --amber-soft:   rgba(191,108,17,.10);

  --maxw: 1240px;
  --pad: clamp(20px, 5vw, 64px);

  --f-display: 'Oswald', 'Archivo', sans-serif;
  --f-ui: 'Archivo', system-ui, sans-serif;
  --f-read: 'Newsreader', Georgia, serif;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
/* skip link — invisível até receber foco por teclado */
.skip-link{
  position:fixed; top:-100px; left:16px; z-index:200;
  background:var(--ink); color:var(--paper);
  font-family:var(--f-ui); font-weight:700; font-size:.8rem; letter-spacing:.06em;
  padding:12px 18px; border-radius:8px; text-decoration:none;
  transition:top .2s ease;
}
.skip-link:focus{ top:16px; outline:2px solid var(--amber); outline-offset:2px; }

/* anel de foco visível — apenas para navegação por teclado */
a:focus-visible,
button:focus-visible,
.lang-btn:focus-visible,
.sample__tab:focus-visible,
.chapter__bar:focus-visible,
[tabindex]:focus-visible{
  outline:3px solid var(--amber);
  outline-offset:3px;
  border-radius:3px;
}
.form input:focus-visible{
  outline:3px solid var(--amber);
  outline-offset:2px;
  border-color:var(--amber);
}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--f-ui);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
::selection{ background:var(--amber); color:var(--paper); }

/* ---------- helpers ---------- */
.wrap{ max-width:var(--maxw); margin:0 auto; padding-inline:var(--pad); }
.eyebrow{
  font-family:var(--f-ui);
  font-weight:700;
  font-size:.72rem;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--ink);
}
.eyebrow .amber{ color:var(--amber-text); }
.rule{ width:64px; height:3px; background:var(--ink); border:0; margin:0; }
.amber{ color:var(--amber-text); }
.display{
  font-family:var(--f-display);
  font-weight:400;
  line-height:.92;
  letter-spacing:.005em;
  text-transform:uppercase;
  margin:0;
}
.serif{ font-family:var(--f-read); }

/* ---------- grão/textura de papel sutil animado ---------- */
body::before{
  content:""; position:fixed; inset:-120%; z-index:9998; pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat:repeat; opacity:.22; mix-blend-mode:multiply;
}
@media (prefers-reduced-motion: no-preference){
  body::before{ animation:paper-grain 1s steps(4) infinite; will-change:transform; }
}
@keyframes paper-grain{
  0%{ transform:translate(0,0); }
  25%{ transform:translate(-3%,2%); }  50%{ transform:translate(2%,-2%); }
  75%{ transform:translate(-2%,-3%); }
  100%{ transform:translate(3%,2%); }
}

/* ---------- vinheta suave nas bordas (ar impresso) ---------- */
body::after{
  content:""; position:fixed; inset:0; z-index:9997; pointer-events:none;
  box-shadow:
    inset 30px 0 28px -30px rgba(20,15,8,.28),
    inset -30px 0 28px -30px rgba(20,15,8,.28);
}

/* ---------- buttons ---------- */
.btn{
  position:relative; overflow:hidden;
  display:inline-flex; align-items:center; gap:.6em;
  font-family:var(--f-ui); font-weight:700;
  font-size:.78rem; letter-spacing:.14em; text-transform:uppercase;
  padding:1.05em 1.6em; border:2px solid var(--ink);
  cursor:pointer; transition:.18s ease; white-space:nowrap;
  background:transparent; color:var(--ink);
}
/* brilho que desliza (sheen) ao passar o mouse */
.btn::after{
  content:""; position:absolute; top:0; bottom:0; left:-60%; width:45%; z-index:1;
  background:linear-gradient(100deg, transparent 0%, rgba(255,255,255,.55) 50%, transparent 100%);
  transform:skewX(-18deg); pointer-events:none; opacity:0;
}
@media (prefers-reduced-motion: no-preference){
  .btn:hover::after{ animation:btn-sheen 1.5s ease; }
}
@keyframes btn-sheen{
  0%{ left:-60%; opacity:0; }
  10%{ opacity:1; }
  90%{ opacity:1; }
  100%{ left:130%; opacity:0; }
}
.btn--ghost::after{ background:linear-gradient(100deg, transparent 0%, rgba(20,15,8,.14) 50%, transparent 100%); }
.btn--primary{ background:var(--amber); border-color:var(--amber); color:#fff; }
.btn--primary:hover{ background:var(--amber-deep); border-color:var(--amber-deep); transform:translateY(-2px) scale(1.05); }
.btn--ghost:hover{ background:var(--ink); color:var(--paper); transform:translateY(-2px) scale(1.05); }
.btn--sm{ padding:.85em 1.2em; font-size:.7rem; }
.btn:hover{ transform:translateY(-2px) scale(1.05); }
.btn:active{ transform:translateY(0) scale(.98); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(245,240,231,.86);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease, box-shadow .3s ease;
}
.site-header__in{
  display:flex; align-items:center; justify-content:space-between;
  gap:24px; padding-block:14px;
  transition:padding-block .3s ease;
}
/* cabeçalho compacto ao rolar */
.site-header.is-shrunk{ background:rgba(245,240,231,.94); }
.site-header.is-shrunk .site-header__in{ padding-block:2px; }
.site-header.is-shrunk .brand__name{ font-size:.6rem; }
.brand__name{ transition:font-size .3s ease; }
.brand{ display:flex; align-items:center; gap:11px; min-width:0; }
.brand__mark{
  width:30px; height:30px; flex:none; background:var(--ink); color:var(--paper);
  display:grid; place-items:center; font-family:var(--f-display); font-size:18px;
}
.brand__mark span{ transform:translateY(1px); }
.brand__name{
  font-family:var(--f-ui); font-weight:800; font-size:.72rem;
  letter-spacing:.12em; text-transform:uppercase; line-height:1.15;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.brand__name b{ color:var(--amber); }
.nav{ display:flex; align-items:center; gap:30px; }
.nav a{
  position:relative;
  font-weight:600; font-size:.8rem; letter-spacing:.04em;
  color:var(--ink-2); transition:.15s; padding-block:7px;
}
.nav a::after{
  content:""; position:absolute; left:0; right:0; bottom:2px; height:2px;
  background:var(--amber); transform:scaleX(0); transform-origin:left;
  transition:transform .26s cubic-bezier(.2,.7,.2,1);
}
.nav a:hover::after{ transform:scaleX(1); }
.nav a:hover{ color:var(--amber); }
/* seção ativa no menu */
.nav a.is-active{ color:var(--ink); }
.nav a.is-active::after{ transform:scaleX(1); }
.header-cta{ display:flex; align-items:center; gap:16px; }
.lang-switch{ display:inline-flex; border:1.5px solid var(--ink); border-radius:8px; overflow:hidden; margin-right:28px; }
.lang-btn{
  font-family:var(--f-ui); font-weight:700; font-size:.68rem; letter-spacing:.08em;
  padding:.62em .9em; background:transparent; color:var(--ink); border:0; cursor:pointer;
  transition:.15s ease; line-height:1;
}
.lang-btn + .lang-btn{ border-left:1.5px solid var(--ink); }
.lang-btn[aria-pressed="true"]{ background:var(--ink); color:var(--paper); }
.lang-btn:hover[aria-pressed="false"]{ background:var(--amber-soft); }

/* ============================================================
   HERO
   ============================================================ */
.hero{ position:relative; padding-top:clamp(40px,7vw,90px); padding-bottom:clamp(50px,8vw,110px); overflow:hidden; }
@keyframes hero-glow{
  0%,100%{ opacity:.55; transform:scale(.92); }
  50%{ opacity:1; transform:scale(1.06); }
}
.hero > .wrap{ position:relative; z-index:1; }
.hero__grid{
  display:grid; grid-template-columns:1.15fr .85fr; gap:clamp(30px,5vw,70px);
  align-items:center;
}
.hero__eyebrow{ display:flex; flex-direction:column; gap:2px; margin-bottom:26px; }
.hero__eyebrow span:first-child{ color:var(--ink); }
.hero h1{
  font-family:var(--f-display); text-transform:uppercase; line-height:1.02;
  font-size:clamp(2.1rem, 4.4vw, 4rem); letter-spacing:.004em; margin:0;
}
.hero h1 .l1{ display:inline; }
.hero h1 .l2{ color:var(--amber); display:inline; }
/* ---------- Animação de título letra a letra (peso + leve deslize) ---------- */
.hl-word{ display:inline-block; white-space:nowrap; vertical-align:top; }
.hl-char{ display:inline-block; }
@media (prefers-reduced-motion: no-preference){
  html.js-anim .hl-anim.hl-ready .hl-char{ font-weight:200; opacity:0; visibility:visible; transition:none; transform:translateX(-5px); }
  html.js-anim .hl-anim.is-revealed .hl-char{ font-weight:600; opacity:1; transform:translateX(0); transition:font-weight .6s ease, opacity .45s ease, transform .45s ease; }
}
/* rede de segurança: garante estado final visível */
html.js-anim .hl-anim.hl-done .hl-char{ font-weight:600 !important; opacity:1 !important; transform:none !important; transition:none !important; }
.hero__sub{
  font-family:var(--f-read); font-size:clamp(1.05rem,1.5vw,1.28rem);
  line-height:1.5; color:var(--ink-2); max-width:46ch; margin:30px 0 0;
}
.hero__sub b{ color:var(--ink); font-weight:600; }
.hero__cta{ display:flex; flex-wrap:wrap; gap:14px; margin-top:34px; }
.hero__cta .btn{ font-size:.94rem; padding:1.4em 2.4em; }
.hero__meta{
  display:flex; flex-wrap:wrap; gap:0; margin-top:42px;
  border-top:1px solid var(--line);
}
.hero__meta div{
  padding:18px 28px 4px 0; margin-right:28px;
  border-right:1px solid var(--line);
}
.hero__meta div:last-child{ border-right:0; }
.hero__meta dt{ font-family:var(--f-display); font-size:2.1rem; line-height:1; }
.hero__meta dd{
  margin:6px 0 0; font-size:.66rem; font-weight:700; letter-spacing:.16em;
  text-transform:uppercase; color:var(--ink-soft);
}

/* book object */
.hero__art{ position:relative; display:grid; place-items:center; }
/* photo do livro na mesa */
.hero__photo{
  position:relative; margin:0 auto; width:min(440px,98%); aspect-ratio:4/5;
  border-radius:8px; overflow:hidden;
  transition:transform .45s cubic-bezier(.2,.7,.2,1), box-shadow .45s ease;
  box-shadow:
    0 44px 70px rgba(20,15,8,.30),
    0 14px 26px rgba(20,15,8,.16);
}
.hero__photo:hover{
  transform:translateY(-7px);
  box-shadow:0 56px 84px rgba(20,15,8,.34), 0 18px 32px rgba(20,15,8,.18);
}
.hero__photo img{
  position:absolute; left:50%; top:50%; transform:translate(-50%,-51%);
  width:125%; height:auto; max-width:none; display:block;
}
html[lang="en"] .hero__photo img{ transform:translate(-50%,-57%); }
.hero__pawn{
  position:absolute; right:-6%; bottom:-7%; width:92px; z-index:3;
  mix-blend-mode:multiply; pointer-events:none;
  filter:drop-shadow(0 12px 12px rgba(0,0,0,.12));
}
.hero__stamp{
  position:absolute; left:-7%; top:4%; z-index:4;
  width:120px; height:120px; border:2px solid var(--amber); border-radius:50%;
  display:grid; place-items:center; text-align:center; rotate:-9deg;
  background:rgba(245,240,231,.5);
}
.hero__stamp span{
  font-family:var(--f-ui); font-weight:800; font-size:.6rem; letter-spacing:.12em;
  text-transform:uppercase; color:var(--amber); line-height:1.35;
}
.hero__stamp span b{ font-family:var(--f-display); font-weight:400; font-size:1.5rem; display:block; color:var(--ink); }

/* ============================================================
   TRAILER / vídeo em destaque
   ============================================================ */
.trailer__head{ max-width:780px; margin:0 auto; text-align:center; }
.trailer__head .eyebrow{ display:block; margin-bottom:16px; }
.trailer__title{
  font-family:var(--f-display); text-transform:uppercase; line-height:1;
  font-size:clamp(1.9rem,4vw,3.2rem); margin:0;
}
.trailer__title .amber{ color:var(--amber); }
.video{ position:relative; max-width:960px; margin:clamp(54px,6vw,82px) auto 0; }
.video__btn{
  display:block; width:100%; aspect-ratio:16/9; position:relative; padding:0;
  border:3px solid var(--ink); background:var(--ink); cursor:pointer; overflow:hidden;
  box-shadow:18px 18px 0 var(--amber); transition:box-shadow .2s ease, transform .2s ease;
}
.video__btn:hover{ box-shadow:12px 12px 0 var(--amber); transform:translate(2px,2px); }
.video__thumb{ width:100%; height:100%; object-fit:cover; display:block; filter:saturate(1.02); }
.video__scrim{ position:absolute; inset:0; background:linear-gradient(0deg, rgba(20,15,8,.55), rgba(20,15,8,.04) 55%); }
.video__play{
  position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
  width:clamp(72px,9vw,104px); height:clamp(72px,9vw,104px); border-radius:50%;
  background:var(--amber); display:grid; place-items:center; transition:.18s; box-shadow:0 10px 30px rgba(20,15,8,.4);
}
.video__play svg{ width:42%; height:42%; margin-left:8%; display:block; }
.video__play svg path{ fill:#fff; }
.video__btn:hover .video__play{ background:var(--amber-deep); transform:translate(-50%,-50%) scale(1.07); }
.video__label{
  position:absolute; left:0; bottom:0; padding:14px 20px;
  font-family:var(--f-ui); font-weight:700; font-size:.72rem; letter-spacing:.16em;
  text-transform:uppercase; color:var(--paper);
}
.video__frame{
  position:relative; width:100%; aspect-ratio:16/9; display:block; overflow:hidden;
  border:3px solid var(--ink); box-shadow:18px 18px 0 var(--amber);
}
.video__frame iframe{
  position:absolute; inset:0; width:100%; height:100%; border:0; display:block;
}
.video__fallback{
  display:block; width:100%; aspect-ratio:16/9; position:relative; overflow:hidden;
  border:3px solid var(--ink); background:var(--ink); box-shadow:18px 18px 0 var(--amber);
}
.video__fallback .video__thumb{ width:100%; height:100%; object-fit:cover; }
.video__fallback-msg{
  position:absolute; left:50%; bottom:18px; transform:translateX(-50%);
  font-family:var(--f-ui); font-weight:700; font-size:.74rem; letter-spacing:.14em;
  text-transform:uppercase; color:var(--paper); background:rgba(20,15,8,.7);
  padding:10px 18px; white-space:nowrap;
}
.video__note{
  text-align:center; margin:22px 0 0; font-family:var(--f-ui);
  font-size:.85rem; color:var(--ink-soft);
}
.video__note a{ color:var(--amber); font-weight:700; border-bottom:1px solid currentColor; }
.video__note a:hover{ color:var(--amber-deep); }
body[data-videoblock="off"] .video__fallback{ box-shadow:none; }

/* ============================================================
   SECTION shells
   ============================================================ */
section{ position:relative; }
.section-head{ max-width:720px; }
.section-head .eyebrow{ display:block; margin-bottom:18px; }
.section-head h2{
  font-family:var(--f-display); text-transform:uppercase; line-height:1;
  font-size:clamp(1.9rem,4vw,3.2rem); margin:0;
}
.pad-y{ padding-block:clamp(64px,9vw,120px); }
.divider{ height:1px; background:var(--line); }

/* ---------- PARA QUEM É ---------- */
.audience__list{
  list-style:none; margin:clamp(36px,5vw,54px) 0 0; padding:0;
  display:grid; grid-template-columns:1fr 1fr; grid-template-rows:auto auto; grid-auto-flow:column;
  gap:clamp(28px,4vw,48px) clamp(40px,6vw,80px);
}
.audience__list li{
  display:grid; grid-template-columns:auto 1fr; gap:20px; align-items:start;
}
.audience__num{ font-family:var(--f-display); font-weight:600; font-size:1.7rem; line-height:1; color:var(--amber); }
.audience__txt{ font-family:var(--f-read); font-size:1.26rem; line-height:1.5; color:var(--ink-2); }
.audience__txt b{ color:var(--ink); font-weight:600; }

/* ---------- PITCH / segundo jogo ---------- */
.pitch{ background:var(--paper-2); overflow:hidden; }
.pitch__grid{ display:grid; grid-template-columns:1.3fr .7fr; gap:clamp(30px,5vw,70px); align-items:start; }
.pitch .pitch__lead{
  font-family:var(--f-read); text-transform:none; line-height:1.32; color:var(--ink);
  font-weight:500; font-size:clamp(1.35rem,2.2vw,1.7rem); margin:24px 0 24px; max-width:54ch;
}
.pitch__lead .amber{ color:var(--amber-text); }
.pitch p{ font-family:var(--f-read); font-size:1.18rem; line-height:1.62; color:var(--ink-2); margin:0 0 18px; max-width:56ch; }
.pitch p:last-child{ margin-bottom:0; }
.pitch p b{ color:var(--ink); font-weight:600; }
.pitch .pitch__close{ font-size:1.3rem; line-height:1.45; color:var(--ink); margin-top:26px; padding-top:24px; border-top:1px solid var(--line); }
.pitch__queen{ position:relative; display:grid; place-items:center; position:sticky; top:90px; }
.pitch__queen img{
  width:auto; max-height:clamp(340px,38vw,480px); max-width:80%;
  filter:drop-shadow(0 22px 26px rgba(0,0,0,.22));
}

/* ---------- STRUCTURE (3 passos) ---------- */
.steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:0; margin-top:54px;
  border:1px solid var(--line); }
.step{ padding:38px 34px; border-right:1px solid var(--line); position:relative; }
.step:last-child{ border-right:0; }
.step__n{ font-family:var(--f-display); font-size:2.6rem; line-height:1; color:var(--amber); }
.step h3{ font-family:var(--f-ui); font-weight:800; font-size:1.05rem; letter-spacing:.02em;
  text-transform:uppercase; margin:16px 0 12px; }
.step p{ font-family:var(--f-read); font-size:1.04rem; color:var(--ink-2); margin:0; line-height:1.55; }

/* ============================================================
   EXPLORER — 10 capítulos / 100 lições
   ============================================================ */
.explorer{ background:var(--paper-2); color:var(--ink); }
.explorer .eyebrow{ color:var(--ink); }
.explorer .eyebrow .amber{ color:var(--amber-text); }
.explorer h2{ color:var(--ink); }
.explorer__intro{ display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between; gap:24px; }
.explorer__hint{ font-size:.78rem; color:var(--ink-soft); letter-spacing:.04em; }
.chapters{ margin-top:48px; border-top:1px solid var(--line); }
.chapter__heading{ margin:0; font:inherit; }
.chapter{ border-bottom:1px solid var(--line); }
.chapter__bar{
  width:100%; background:transparent; border:0; cursor:pointer;
  display:grid; grid-template-columns:auto 1fr auto auto; align-items:center;
  gap:clamp(16px,3vw,40px); padding:26px 4px; text-align:left; color:var(--ink);
  transition:.18s;
}
.chapter__bar:hover{ padding-left:14px; }
.chapter__bar:hover .chapter__title{ color:var(--amber); }
.chapter__num{
  font-family:var(--f-display); font-size:clamp(1.4rem,3vw,2rem);
  color:var(--ink-soft); min-width:1.6ch; transition:.18s;
}
.chapter[data-open="true"] .chapter__num{ color:var(--amber); }
.chapter__title{
  font-family:var(--f-display); text-transform:uppercase; line-height:1.05;
  font-size:1.26rem; transition:color .18s;
}
.chapter__count{ font-size:.72rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--ink-soft); white-space:nowrap; }
.chapter__plus{ width:26px; height:26px; position:relative; flex:none; }
.chapter__plus::before,.chapter__plus::after{
  content:""; position:absolute; background:var(--amber); inset:50% 0 auto 0; height:2px; margin-top:-1px; transition:.25s;
}
.chapter__plus::after{ rotate:90deg; }
.chapter[data-open="true"] .chapter__plus::after{ rotate:0deg; opacity:0; }
.chapter__panel{ overflow:hidden; height:0; transition:height .35s cubic-bezier(.4,0,.1,1); }
.lessons{
  list-style:none; margin:0; padding:6px 0 34px;
  display:grid; grid-template-columns:1fr 1fr; grid-template-rows:repeat(5, auto);
  grid-auto-flow:column; gap:2px clamp(24px,4vw,56px);
}
.lessons li{
  display:grid; grid-template-columns:auto 1fr; gap:16px; align-items:baseline;
  padding:11px 0; border-bottom:1px solid var(--line);
}
.lessons li .ln{ font-family:var(--f-ui); font-weight:700; font-size:1rem; color:var(--amber); min-width:2.2ch; letter-spacing:.04em; }
.lessons li .lt{ font-family:var(--f-read); font-size:1.26rem; line-height:1.4; color:var(--ink-2); }

/* ============================================================
   SAMPLE LESSON
   ============================================================ */
.sample__shell{ display:block; margin-top:44px; max-width:880px; }
.sample__single{ max-width:860px; margin:48px auto 0; }
.sample__note{
  max-width:880px; margin:40px 0 0; font-family:var(--f-read);
  font-size:1.18rem; line-height:1.5; color:var(--ink-2); text-align:center;
  font-weight:700;
}
.sample__tabs{ display:flex; gap:0; border-bottom:1px solid var(--line); margin-bottom:0; }
.sample__tab{
  flex:1 1 0; min-width:0; text-align:left; background:transparent; border:0; cursor:pointer;
  border-bottom:3px solid transparent; padding:16px 18px 18px; transition:.18s; margin-bottom:-1px;
  font-family:var(--f-ui); color:var(--ink-soft);
}
.sample__tab:hover{ background:var(--card); }
.sample__tab[aria-selected="true"]{ border-bottom-color:var(--amber); background:var(--card); }
.sample__tab .st-k{ font-weight:800; font-size:1.2rem; letter-spacing:.08em; text-transform:uppercase; color:var(--amber); display:block; }
.sample__tab .st-t{ font-family:var(--f-read); font-size:1.04rem; line-height:1.3; color:var(--ink-2); margin-top:5px; display:block; }
.sample__tab[aria-selected="true"] .st-t{ color:var(--ink); }

.lesson-card{ background:var(--card); border:1px solid var(--line); padding:clamp(28px,4vw,56px); }
@media (prefers-reduced-motion: no-preference){
  .lesson-card.lc-enter{ animation:lc-enter .5s cubic-bezier(.16,.84,.3,1); }
}
@keyframes lc-enter{
  from{ opacity:0; transform:translateX(28px); }
  to{ opacity:1; transform:none; }
}
.lesson-card[hidden]{ display:none; }
.lesson-card__kicker{ font-weight:700; font-size:.7rem; letter-spacing:.18em; text-transform:uppercase; color:var(--amber-text); }
.lesson-card h3{ font-family:var(--f-display); text-transform:uppercase; line-height:1.04; font-size:clamp(1.7rem,3.2vw,2.6rem); margin:16px 0 30px; }
.lesson-body p{ font-family:var(--f-read); font-size:1.26rem; line-height:1.65; color:var(--ink-2); margin:0 0 1.15em; }
.lesson-body p:last-child{ margin-bottom:0; }
.lesson-footnote{ font-size:.92rem !important; line-height:1.5 !important; color:var(--ink-soft) !important; margin-top:1.6em !important; padding-top:1em; border-top:1px solid var(--line); }
.lesson-block{ margin:0 0 28px; }
.lesson-block:last-child{ margin-bottom:0; }
.lesson-block__tag{
  display:inline-block; white-space:nowrap; font-weight:700; font-size:.64rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--ink); border-bottom:2px solid var(--amber); padding-bottom:3px; margin-bottom:14px;
}
.lesson-block p{ font-family:var(--f-read); font-size:1.14rem; line-height:1.62; color:var(--ink-2); margin:0 0 14px; }
.lesson-block p:last-child{ margin-bottom:0; }
.lesson-block.is-do{ background:var(--amber-soft); border-left:3px solid var(--amber); padding:22px 24px; }

/* ============================================================
   AUTHOR
   ============================================================ */
.author{ background:var(--paper-2); }
.author__grid{ display:grid; grid-template-columns:.8fr 1.2fr; gap:clamp(30px,5vw,70px); align-items:start; }
.author__photo{ position:relative; text-align:center; }
.author__photo-frame{
  position:relative; width:min(340px,80%); aspect-ratio:1; margin:0 auto;
  border-radius:50%; overflow:hidden; border:1px solid var(--line);
}
.author__photo img{ width:100%; height:100%; object-fit:cover; object-position:50% 15%; display:block; transition:transform .5s cubic-bezier(.2,.7,.2,1); }
.author__photo-hover{ position:absolute; inset:0; opacity:0; transition:opacity .5s ease, transform .5s cubic-bezier(.2,.7,.2,1) !important; }
.author__photo-frame:hover .author__photo-hover{ opacity:1; }
.author__photo:hover img{ transform:scale(1.05); }
.author__photo figcaption{
  display:block; margin-top:20px; text-align:center; color:var(--ink);
  font-family:var(--f-display); text-transform:uppercase; font-size:1.5rem; letter-spacing:.02em;
}
.author__body .eyebrow{ display:block; margin-bottom:16px; }
.author__body h2{ font-family:var(--f-display); text-transform:uppercase; line-height:1.0; font-size:clamp(1.8rem,3.6vw,2.8rem); margin:0 0 22px; }
.author__body p{ font-family:var(--f-read); font-size:1.26rem; line-height:1.6; color:var(--ink-2); margin:0 0 16px; max-width:58ch; }
.author__body p b{ color:var(--ink); font-weight:600; }
.author__tags{ display:flex; flex-wrap:wrap; gap:10px; margin-top:26px; }
.author__social{ display:flex; flex-wrap:wrap; justify-content:center; gap:8px 22px; margin-top:18px; }
.author__social a{
  font-family:var(--f-ui); font-weight:600; font-size:.9rem; color:var(--ink); white-space:nowrap;
  background-image:linear-gradient(var(--amber), var(--amber));
  background-repeat:no-repeat; background-position:0 100%;
  background-size:100% 2px; padding:0 .12em .06em;
  transition:background-size .28s cubic-bezier(.4,0,.1,1), color .28s ease;
}
.author__social a:hover,
.author__social a:focus-visible{ background-size:100% 100%; color:#fff; }
.tag{ font-family:var(--f-ui); font-weight:700; font-size:.68rem; letter-spacing:.1em; text-transform:uppercase; white-space:nowrap;
  border:1.5px solid var(--ink); padding:.7em 1em; color:var(--ink); }
.tag--link{ cursor:pointer; transition:.16s ease; }
.tag--link:hover{ background:var(--ink); color:var(--paper); border-color:var(--ink); }
.author__body p a.alink{
  color:var(--ink); position:relative; font-weight:600;
  background-image:linear-gradient(var(--amber), var(--amber));
  background-repeat:no-repeat; background-position:0 100%;
  background-size:100% 2px; padding:0 .06em .06em;
  transition:background-size .28s cubic-bezier(.4,0,.1,1), color .28s ease;
}
.author__body p a.alink:hover,
.author__body p a.alink:focus-visible{
  background-size:100% 100%; color:#fff;
}
.author__body p a.alink:hover b,
.author__body p a.alink:focus-visible b{ color:#fff; }

/* ============================================================
   CTA / lançamento
   ============================================================ */
.launch{ background:var(--ink); color:var(--paper); overflow:hidden; }
.launch__grid{ display:block; }
.launch__top{ max-width:680px; }
.launch .eyebrow{ color:var(--paper); }
.launch .eyebrow .amber{ color:var(--amber); }
.launch h2{ font-family:var(--f-display); text-transform:uppercase; line-height:1.0; font-size:clamp(1.9rem,3.6vw,3rem); margin:18px 0 18px; color:var(--paper); white-space:nowrap; }
.launch h2 .amber{ color:var(--amber); }
.launch__lead{ font-family:var(--f-read); font-size:1.26rem; color:#cfc6b4; max-width:none; margin:0 0 32px; }
.form{ display:flex; gap:12px; flex-wrap:wrap; max-width:680px; }
.form input{
  flex:1; min-width:200px; background:#221d14; border:1.5px solid #3a3122; color:var(--paper);
  padding:1.05em 1.2em; font-family:var(--f-ui); font-size:.95rem; outline:none; transition:.15s;
}
.form input:focus{ border-color:var(--amber); }
.form input::placeholder{ color:#8a7e69; }
.form__msg{ margin-top:14px; font-size:.85rem; color:var(--amber); min-height:1.2em; font-weight:600; opacity:1; transition:opacity .8s ease; }
.form__msg.is-fading{ opacity:0; }
.launch__note{ margin-top:18px; font-size:.78rem; color:#8a7e69; }
.launch__note--privacy{ margin-top:6px; }
.launch__privacy-link{ color:#c9c0ad; text-decoration:underline; text-underline-offset:2px; }
.launch__privacy-link:hover,
.launch__privacy-link:focus-visible{ color:var(--amber); }

.launch__card{
  margin-top:clamp(40px,5vw,64px); padding-top:32px;
  border-top:1px solid #3a3122;
}
.launch__card h3{
  font-family:var(--f-ui); font-weight:700; text-transform:uppercase; letter-spacing:.16em;
  font-size:.72rem; margin:0 0 22px; color:#8a7e69;
}
.specs{
  list-style:none; margin:0; padding:0;
  display:grid; grid-template-columns:repeat(auto-fill, minmax(190px, 1fr));
  gap:18px 36px;
}
.specs li{ display:flex; flex-direction:column; gap:4px; padding:0; border:0; font-size:.9rem; }
.specs li:last-child{ border-bottom:0; }
.specs li span:first-child{ color:#8a7e69; font-weight:700; font-size:.62rem; letter-spacing:.14em; text-transform:uppercase; }
.specs li span:last-child{ font-family:var(--f-read); color:#c9c0ad; text-align:left; font-size:.96rem; line-height:1.35; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{ background:var(--paper); padding-block:46px; border-top:1px solid var(--line); }
.site-footer__in{ display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:18px; }
.site-footer__brand{ font-family:var(--f-display); text-transform:uppercase; font-size:1.1rem; }
.site-footer__brand b{ color:var(--amber); }
.site-footer small{ color:var(--ink-soft); font-size:.78rem; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 960px){
  .nav{ display:none; }
  .hero__grid{ grid-template-columns:1fr; }
  .hero__art{ order:-1; }
  .hero__photo{ width:min(360px,80%); }
  .hero__stamp{ width:96px; height:96px; left:2%; }
  .pitch__grid{ grid-template-columns:1fr; }
  .pitch__queen{ min-height:0; margin-top:10px; }
  .pitch__queen img{ max-height:300px; }
  .steps{ grid-template-columns:1fr; }  .step{ border-right:0; border-bottom:1px solid var(--line); }
  .step:last-child{ border-bottom:0; }
  .lessons{ grid-template-columns:1fr; grid-template-rows:none; grid-auto-flow:row; }
  .audience__list{ grid-template-columns:1fr; grid-template-rows:none; grid-auto-flow:row; }
  .sample__shell{ max-width:none; }
  .sample__tabs{ overflow-x:auto; }
  .sample__tab{ flex:1 0 auto; min-width:150px; }
  .author__grid{ grid-template-columns:1fr; }
  .author__photo{ max-width:340px; }
  .launch__grid{ grid-template-columns:1fr; }
}
@media (max-width: 560px){
  body{ font-size:16px; }
  .header-cta .btn--ghost{ display:none; }
  .hero__meta div{ padding-right:18px; margin-right:18px; }
  .hero__meta dt{ font-size:1.7rem; }
  .lesson-block.is-do{ padding:18px; }
}

@media (prefers-reduced-motion: reduce){
  *{ scroll-behavior:auto !important; }
  .chapter__panel{ transition:none; }
}

/* ---------- Menos transparência / mais contraste ---------- */
@media (prefers-reduced-transparency: reduce){
  body::before{ display:none; }      /* grão de papel */
  .hero::before{ display:none; }      /* brilho do herói */
}
@media (prefers-contrast: more){
  :root{ --ink-soft:#4a4233; --line:#b3a78f; --amber-text:#8a4c08; }
  body::before{ display:none; }
  .hero::before{ display:none; }
}
@media (forced-colors: active){
  .btn, .lang-switch, .lang-btn, .chapter, .sample__tab, .video__frame, .author__photo-frame{ border:1px solid; }
  .nav a.is-active::after, .nav a:hover::after{ forced-color-adjust:none; }
}

/* ---------- Animações de entrada ao rolar ---------- */
@media (prefers-reduced-motion: no-preference){
  html.js-anim .reveal{
    opacity:0; transform:translateY(38px) scale(.86);
    transition:opacity .9s ease, transform 1s cubic-bezier(.16,.84,.3,1);
    will-change:opacity, transform;
  }
  html.js-anim .reveal.is-in{ opacity:1; transform:none; }
  /* fotos: fade + leve zoom de entrada */
  html.js-anim .fade-in{ opacity:0; transform:scale(.85); transition:opacity 1.8s ease, transform 1.6s cubic-bezier(.16,.84,.3,1); }
  html.js-anim .fade-in.is-in{ opacity:1; transform:none; }
  /* o livro do herói mantém o hover de elevação intacto */
  html.js-anim .hero__photo.fade-in{ transform:none; transition:opacity 1.2s ease, transform .5s cubic-bezier(.2,.7,.2,1), box-shadow .5s ease; }
  html.js-anim .hero__photo.fade-in.is-in{ transform:none; }
  /* foto do autor: fade puro de opacidade, bem suave (sem zoom) */
  html.js-anim .author__photo.fade-in{ transform:none; transition:opacity 2.6s ease; }
  html.js-anim .author__photo.fade-in.is-in{ transform:none; }
  /* leve escalonamento dentro de grupos */
  html.js-anim .audience__list li:nth-child(2){ transition-delay:.09s; }
  html.js-anim .audience__list li:nth-child(3){ transition-delay:.18s; }
  html.js-anim .audience__list li:nth-child(4){ transition-delay:.27s; }
}

/* ============================================================
   Estados controlados pelos Tweaks
   ============================================================ */
body[data-seal="off"] .hero__stamp{ display:none; }
body[data-videoblock="off"] .video__btn{ box-shadow:none; }
body[data-videoblock="off"] .video__frame{ box-shadow:none; }

/* ============================================================
   Cantos levemente arredondados (8px)
   ============================================================ */
.btn,
.brand__mark,
.steps,
.lesson-card,
.tag,
.video__btn,
.video__frame,
.video__fallback,
.launch__card,
.form input,
.author__photo figcaption{ border-radius:8px; }
.steps{ overflow:hidden; }
.sample__tab{ border-radius:8px 8px 0 0; }

/* ---------- Botão: estados carregando / sucesso ---------- */
.btn--loading, .btn--success{ pointer-events:none; }
.btn--success{ background:var(--amber); border-color:var(--amber); color:#fff; }
.btn .btn-spinner{
  width:1.1em; height:1.1em; border-radius:50%;
  border:2px solid rgba(255,255,255,.4); border-top-color:#fff;
  display:inline-block; animation:btn-spin .7s linear infinite;
}
.btn-check{
  position:relative; display:inline-block; width:1.05em; height:1.05em;
}
.btn-check::after{
  content:""; position:absolute; left:50%; top:48%;
  width:.32em; height:.62em; border:solid #fff; border-width:0 .16em .16em 0;
  transform:translate(-50%,-58%) rotate(45deg); transform-origin:center;
  animation:btn-check-pop .35s cubic-bezier(.2,.8,.3,1.4) both;
}
.btn-check-label{ display:inline-block; }
@keyframes btn-spin{ to{ transform:rotate(360deg); } }
@keyframes btn-check-pop{
  0%{ width:0; height:0; opacity:0; }
  60%{ opacity:1; }
  100%{ width:.32em; height:.62em; opacity:1; }
}
@media (prefers-reduced-motion: reduce){
  .btn .btn-spinner{ animation-duration:1.4s; }
  .btn-check::after{ animation:none; }
}

/* ---------- Confete (peças de xadrez) ---------- */
.confetti-layer{
  position:fixed; inset:0; z-index:9999; pointer-events:none; overflow:hidden;
}
.confetti-piece{
  position:fixed; top:0; left:0; line-height:1; border-radius:2px;
  transform:translate(-50%,-50%);
  animation-name:confetti-fly; animation-timing-function:cubic-bezier(.2,.6,.3,1);
  animation-fill-mode:forwards; will-change:transform, opacity;
}
@keyframes confetti-fly{
  0%{ transform:translate(-50%,-50%) rotate(0deg); opacity:0; }
  12%{ opacity:1; }
  40%{ transform:translate(calc(-50% + var(--dx)*0.6), calc(-50% + var(--dy))) rotate(calc(var(--rot)*0.5)); opacity:1; }
  100%{ transform:translate(calc(-50% + var(--dx)), calc(-50% + var(--dy) + 90vh)) rotate(var(--rot)); opacity:0; }
}

/* ---------- Easter egg: chuva de peças (Konami) ---------- */
.konami-layer{ position:fixed; inset:0; z-index:10000; pointer-events:none; overflow:hidden; }
.konami-piece{
  position:fixed; top:-8%; line-height:1;
  animation-name:konami-fall; animation-timing-function:cubic-bezier(.3,.1,.5,1);
  animation-fill-mode:forwards; will-change:transform, opacity;
}
@keyframes konami-fall{
  0%{ transform:translateY(-10vh) translateX(0) rotate(0deg); opacity:0; }
  8%{ opacity:1; }
  90%{ opacity:1; }
  100%{ transform:translateY(118vh) translateX(var(--drift)) rotate(var(--spin)); opacity:.85; }
}
.konami-badge{
  position:fixed; left:50%; top:50%; transform:translate(-50%,-50%) scale(.9);
  display:flex; align-items:center; gap:22px; max-width:90vw; text-align:center;
  background:var(--ink); color:var(--paper);
  padding:48px 78px; border-radius:20px; box-shadow:0 18px 44px rgba(20,15,8,.4);
  font-family:var(--f-ui); font-weight:700; font-size:3.68rem; letter-spacing:.02em;
  opacity:0; animation:konami-badge-in .5s cubic-bezier(.2,.8,.3,1.3) .2s forwards;
}
.konami-badge__k{ font-size:6rem; color:var(--amber); line-height:1; }
.konami-badge.is-out{ animation:konami-badge-out .6s ease forwards; }
@keyframes konami-badge-in{ to{ opacity:1; transform:translate(-50%,-50%) scale(1); } }
@keyframes konami-badge-out{ to{ opacity:0; transform:translate(-50%,-50%) scale(.9); } }

/* ============================================================
   Peso da fonte de destaque (Oswald) — um pouco mais leve
   ============================================================ */
.display,
.brand__mark,
.hero h1,
.hero__meta dt,
.hero__stamp span b,
.trailer__title,
.section-head h2,
.step__n,
.chapter__num,
.chapter__title,
.author__photo figcaption,
.author__body h2,
.launch h2,
.launch__card h3,
.site-footer__brand{ font-weight:600; }
.lesson-card h3{ font-weight:400; }