/* Back to School · página de apresentação. Mesma identidade do app: mesa, folha pautada, caneta azul e post-its. */
:root{
  --desk:#CFC7B6; --desk-ink:#3B362D;
  --paper:#FCFAF3; --paper-edge:#ECE6D6;
  --rule:#C8DCEC; --margin:#E8A2A2;
  --ink:#25303C; --pencil:#6C7079; --pen-blue:#1E4FA6; --pen-red:#C9302A;
  --marker:#FFEF6B; --postit:#FFF1A0; --postit-pink:#FFD3DC; --postit-blue:#CFE6F7; --good:#2B7A4B;
  --cover:#1F3B63;
  --tab1:#F4D46A; --tab2:#9FC8EE; --tab3:#F2A8B8; --tab4:#A8DBB3;
  --f-hand:"Caveat","Segoe Print","Bradley Hand",cursive;
  --f-body:"Atkinson Hyperlegible","Segoe UI",system-ui,sans-serif;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--desk:#1D1C1A;--desk-ink:#CFC8B8;color-scheme:dark}}
:root[data-theme="dark"]{--desk:#1D1C1A;--desk-ink:#CFC8B8;color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--desk);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.55;-webkit-text-size-adjust:100%}
a{color:var(--pen-blue)}
h1,h2,h3{font-family:var(--f-hand);font-weight:700;line-height:1.05;margin:0}
p{margin:0 0 12px}

/* ---------- topo ---------- */
.top{max-width:1100px;margin:0 auto;padding:18px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{white-space:nowrap;text-decoration:none;display:flex;align-items:baseline;gap:8px;color:var(--desk-ink)}
.brand-a{font-family:var(--f-hand);font-size:30px;font-weight:700}
.brand-b{font-family:var(--f-hand);font-size:24px;font-weight:700;color:var(--pen-red)}
.pen-link{font-family:var(--f-hand);font-size:22px;font-weight:700;color:var(--desk-ink);text-decoration:none;border:2px solid currentColor;padding:4px 16px 2px;border-radius:255px 18px 225px 18px/18px 225px 18px 255px}

/* ---------- botões ---------- */
.btn-postit{display:inline-block;background:var(--postit);color:#2A2A2A;text-decoration:none;font-family:var(--f-hand);font-size:28px;font-weight:700;padding:10px 26px 8px;border-radius:10px;box-shadow:0 10px 16px -10px rgba(0,0,0,.55);transform:rotate(-1deg);transition:transform .15s}
.btn-postit::after{content:" →"}
.btn-postit:hover{transform:rotate(0) translateY(-2px)}
.btn-pen{display:inline-block;font-family:var(--f-hand);font-size:24px;font-weight:700;color:var(--pen-blue);text-decoration:none;border:2px solid var(--pen-blue);padding:6px 18px 4px;border-radius:255px 18px 225px 18px/18px 225px 18px 255px;background:transparent}
.btn-pen:hover{background:color-mix(in srgb,var(--pen-blue) 8%,transparent)}

/* ---------- abertura ---------- */
.hero{max-width:1100px;margin:0 auto;padding:12px 16px 40px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hero-text{background:var(--paper);border-radius:6px;padding:34px 30px 28px 56px;position:relative;box-shadow:0 18px 30px -18px rgba(0,0,0,.45);
  background-image:linear-gradient(90deg,transparent 40px,var(--margin) 40px 41.5px,transparent 41.5px),repeating-linear-gradient(to bottom,transparent 0 31px,var(--rule) 31px 32px);background-position:0 0,0 18px}
.kicker{font-family:var(--f-hand);font-size:22px;color:var(--pen-red);margin:0 0 4px}
.hero h1{font-size:clamp(44px,6.4vw,72px);color:var(--pen-blue);margin-bottom:16px}
.hero h1 mark{background:linear-gradient(transparent 58%,var(--marker) 58%);color:inherit;padding:0 4px}
.lead{font-size:18px;line-height:32px;max-width:36em}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:20px 0 10px}
.fine{font-size:14.5px;color:var(--pencil);margin:0}

/* capa em miniatura */
.hero-art{position:relative;display:flex;justify-content:center;padding:10px 0}
.mini-cover{position:relative;width:min(320px,100%);aspect-ratio:3/4;border-radius:8px 14px 14px 8px;padding:26px 30px 20px 40px;color:#F5F1E6;display:flex;flex-direction:column;align-items:center;gap:14px;transform:rotate(2deg);
  background:radial-gradient(120% 80% at 70% 20%,rgba(255,255,255,.10),transparent 60%),repeating-linear-gradient(35deg,rgba(255,255,255,.025) 0 2px,transparent 2px 5px),var(--cover);
  box-shadow:0 26px 40px -20px rgba(0,0,0,.65)}
.rings{position:absolute;left:-10px;top:18px;bottom:18px;width:22px;background:radial-gradient(circle at 50% 50%,transparent 4px,#8a8f97 4.5px 6.5px,transparent 7px) 0 0/22px 26px repeat-y}
.mc-top{font-family:var(--f-hand);font-size:17px;opacity:.85;margin:0}
.mc-label{width:100%;background:var(--paper);color:var(--ink);border-radius:12px;padding:12px 10px 10px;text-align:center;transform:rotate(-1.6deg);border:3px double #C9D7E6;box-shadow:0 10px 18px -8px rgba(0,0,0,.6)}
.mc-logo{font-family:var(--f-hand);font-size:38px;font-weight:700;line-height:1;color:var(--pen-blue);margin:0}
.mc-english{font-family:var(--f-hand);font-size:28px;font-weight:700;line-height:1;color:var(--pen-red);margin:2px 0 4px}
.mc-slogan{font-size:13px;font-style:italic;margin:0}
.mc-go{width:100%;background:var(--postit);color:#2A2A2A;border-radius:10px;padding:8px 10px 6px;text-align:center;font-family:var(--f-hand);font-size:22px;font-weight:700;transform:rotate(.8deg)}
.mc-tabs{position:absolute;right:-16px;top:40px;display:flex;flex-direction:column;gap:8px}
.mc-tabs span{display:block;width:18px;height:52px;border-radius:0 8px 8px 0}
.mc-tabs span:nth-child(1){background:var(--tab1)}
.mc-tabs span:nth-child(2){background:var(--tab2)}
.mc-tabs span:nth-child(3){background:var(--tab3)}
.mc-tabs span:nth-child(4){background:var(--tab4)}
.grade-note{position:absolute;right:4%;bottom:-6px;background:var(--paper);border-radius:6px;padding:8px 16px 6px;transform:rotate(-6deg);box-shadow:0 12px 20px -12px rgba(0,0,0,.6);display:flex;align-items:center;gap:8px}
.grade{font-family:var(--f-hand);font-size:44px;font-weight:700;color:var(--pen-red);line-height:1;border:3px solid var(--pen-red);border-radius:50%;width:70px;height:70px;display:grid;place-items:center}
.grade-txt{font-family:var(--f-hand);font-size:24px;font-weight:700;color:var(--pen-red)}

/* ---------- folhas ---------- */
.sheet{max-width:1100px;margin:0 auto 28px;background:var(--paper);border-radius:6px;padding:34px 30px 30px;box-shadow:0 18px 30px -18px rgba(0,0,0,.4);
  width:calc(100% - 32px)}
.sheet h2{font-size:clamp(36px,4.6vw,48px);color:var(--pen-blue);margin-bottom:8px}
.sub{color:var(--pencil);margin-bottom:22px}
.note{margin:18px 0 0;color:var(--pencil);font-size:15.5px}

/* passos */
.steps{list-style:none;padding:0;margin:0;counter-reset:st;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.steps li{counter-increment:st;position:relative;padding-top:48px}
.steps li::before{content:counter(st);position:absolute;left:0;top:0;width:38px;height:38px;border:2.5px solid var(--pen-blue);border-radius:50%;display:grid;place-items:center;font-family:var(--f-hand);font-size:26px;font-weight:700;color:var(--pen-blue)}
.steps h3{font-size:27px;margin-bottom:6px;color:var(--ink)}
.steps p{font-size:16px;margin:0}

/* duas colunas */
.two-col{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center}
.checks{list-style:none;padding:0;margin:12px 0 0}
.checks li{position:relative;padding-left:32px;margin-bottom:10px}
.checks li::before{content:"✓";position:absolute;left:4px;top:-4px;font-family:var(--f-hand);font-size:28px;font-weight:700;color:var(--good)}
.postits{position:relative;min-height:220px}
.postit{position:absolute;width:150px;padding:18px 14px;font-family:var(--f-hand);font-size:28px;font-weight:700;line-height:1.05;text-align:center;box-shadow:0 12px 18px -12px rgba(0,0,0,.55);color:#2A2A2A}
.postit small{font-size:22px}
.p1{background:var(--postit);left:4%;top:6px;transform:rotate(-5deg)}
.p2{background:var(--postit-blue);left:40%;top:60px;transform:rotate(4deg)}
.p3{background:var(--postit-pink);left:10%;top:120px;transform:rotate(2deg)}

/* módulos */
.modules{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.mod{border:2px solid var(--paper-edge);border-radius:10px;padding:16px 16px 12px;background:#fff8;position:relative}
.mod h3{font-size:28px;display:flex;align-items:center;gap:10px;margin-bottom:6px}
.mod h3 span{width:34px;height:34px;flex:none;border-radius:50%;background:var(--tab2);display:grid;place-items:center;font-size:22px}
.mod p{font-size:15.5px;margin:0;color:var(--ink)}
.mod.soon{opacity:.7}
.mod.soon small{display:inline-block;margin-top:6px;font-family:var(--f-hand);font-size:20px;color:var(--pen-red)}

/* planos */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:10px}
.plan{border:2px solid var(--paper-edge);border-radius:12px;padding:20px 20px 22px;display:flex;flex-direction:column;gap:6px;background:#fff8}
.plan.featured{border-color:var(--pen-blue);box-shadow:0 0 0 3px color-mix(in srgb,var(--pen-blue) 14%,transparent)}
.plan h3{font-size:34px;color:var(--pen-blue)}
.price{font-family:var(--f-hand);font-size:34px;font-weight:700;margin:0 0 4px}
.soon-price{color:var(--pencil);font-size:28px}
.plan ul{margin:0 0 14px;padding-left:20px;flex:1}
.plan li{margin-bottom:6px;font-size:16px}
.plan li small{color:var(--pencil)}
.plan .btn-pen{align-self:flex-start}

/* perguntas */
.faq details{border-bottom:1px dashed var(--rule);padding:12px 0}
.faq summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:30px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:-6px;font-family:var(--f-hand);font-size:30px;color:var(--pen-blue)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:8px 0 0;color:var(--ink)}

/* final */
.final{max-width:1100px;margin:10px auto 0;padding:30px 16px 50px;text-align:center}
.final h2{font-size:clamp(34px,4.4vw,46px);color:var(--desk-ink);margin-bottom:20px}
.foot{text-align:center;padding:0 16px 30px;color:var(--desk-ink);opacity:.75;font-size:14px}

/* ---------- celular ---------- */
@media (max-width:860px){
  .hero{grid-template-columns:1fr;gap:26px}
  .hero-art{order:-1}
  .mini-cover{width:min(240px,70%)}
  .steps{grid-template-columns:1fr 1fr}
  .two-col{grid-template-columns:1fr}
  .plans{grid-template-columns:1fr}
}
@media (max-width:520px){
  body{font-size:16px}
  .hero-text{padding:26px 18px 22px 46px;background-image:linear-gradient(90deg,transparent 32px,var(--margin) 32px 33.5px,transparent 33.5px),repeating-linear-gradient(to bottom,transparent 0 31px,var(--rule) 31px 32px)}
  .lead{font-size:17px}
  .sheet{padding:26px 18px 22px}
  .steps{grid-template-columns:1fr}
  .postits{min-height:200px}
  .postit{width:130px;font-size:24px}
  .grade-note{display:none}
  .mini-cover{width:min(220px,62%)}
  .brand-a{font-size:26px}
}