/* Tabuada do Zero — páginas de vendas estáticas (Vercel). Sem framework. */
@font-face{font-family:"Manrope";src:url(/assets/fonts/manrope.woff2) format("woff2");font-weight:400 800;font-display:swap}
@font-face{font-family:"Space Grotesk";src:url(/assets/fonts/space-grotesk.woff2) format("woff2");font-weight:500 700;font-display:swap}

:root{
  --ink:#12375b;--ink-deep:#0b2440;--blue:#1464dc;--blue-soft:#d9e8ff;--sky:#edf5ff;--cyan:#13a6d8;
  --yellow:#ffda55;--yellow-deep:#f5c518;--paper:#ffffff;--paper-2:#f7f9fc;--line:#dfe7f2;--muted:#52647b;
  --ok:#0f8a5f;--ok-bg:#e3f6ee;--no:#c2410c;--no-bg:#fff0e6;
  --r:22px;--r-sm:14px;--shadow:0 30px 60px -28px rgba(11,36,64,.35),0 8px 18px -10px rgba(11,36,64,.18);
  --display:"Space Grotesk",ui-sans-serif,system-ui,sans-serif;--body:"Manrope",ui-sans-serif,system-ui,sans-serif;
  --w:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1.0625rem/1.6 var(--body);overflow-x:clip;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
button{font:inherit;color:inherit}
h1,h2,h3{font-family:var(--display);font-weight:700;letter-spacing:-.035em;line-height:1.02;margin:0}
p{margin:0}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:6px}
.wrap{width:min(var(--w),100% - 32px);margin-inline:auto}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Marca */
.logo{display:inline-flex;align-items:center;gap:.4rem;text-decoration:none;font:700 1.02rem/1 var(--display);letter-spacing:.01em;text-transform:uppercase;color:var(--cyan)}
.logo svg{width:20px;height:20px;flex:none}

/* Topo */
.top{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.82);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid transparent;transition:border-color .2s}
.top.scrolled{border-bottom-color:var(--line)}
.top .wrap{display:flex;align-items:center;gap:1.5rem;height:68px}
.top nav{display:flex;gap:1.6rem;margin-left:auto;font-size:.94rem;font-weight:600}
.top nav a{text-decoration:none;color:var(--muted)}
.top nav a:hover{color:var(--ink)}
.top .btn{padding:.6rem 1rem;font-size:.92rem}
@media (max-width:860px){.top nav{display:none}.top .btn{margin-left:auto}}

/* Botões */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;border:0;border-radius:999px;padding:1rem 1.6rem;font:700 1.02rem/1.1 var(--body);text-decoration:none;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s}
.btn-buy{background:var(--yellow);color:var(--ink-deep);box-shadow:0 10px 24px -10px rgba(245,197,24,.9),inset 0 -3px 0 rgba(0,0,0,.08)}
.btn-buy:hover{transform:translateY(-2px);background:#ffe170}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:var(--ink-deep)}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn-ghost:hover{box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn .arr{transition:transform .15s}
.btn:hover .arr{transform:translateX(3px)}

/* Herói */
.hero{position:relative;padding:clamp(48px,8vw,96px) 0 0;text-align:center;isolation:isolate;overflow-x:clip}
.hero::before{content:"";position:absolute;inset:0 0 30%;z-index:-1;background-image:linear-gradient(var(--sky) 1px,transparent 1px),linear-gradient(90deg,var(--sky) 1px,transparent 1px);background-size:34px 34px;-webkit-mask-image:radial-gradient(ellipse 70% 80% at 50% 0%,#000 30%,transparent 75%);mask-image:radial-gradient(ellipse 70% 80% at 50% 0%,#000 30%,transparent 75%)}
.hero::after{content:"";position:absolute;left:50%;top:58%;width:min(1200px,120vw);height:520px;transform:translateX(-50%);z-index:-1;background:radial-gradient(closest-side,rgba(20,100,220,.16),transparent);filter:blur(10px)}
.pill{display:inline-flex;align-items:center;gap:.5rem;padding:.42rem .9rem .42rem .5rem;border-radius:999px;background:#fff;box-shadow:inset 0 0 0 1px var(--line),0 4px 14px -8px rgba(11,36,64,.25);font-size:.86rem;font-weight:700;color:var(--ink)}
.pill b{display:inline-grid;place-items:center;min-width:1.6rem;height:1.6rem;padding:0 .45rem;border-radius:999px;background:var(--ink);color:var(--yellow);font:700 .8rem/1 var(--display)}
.hero h1{font-size:clamp(2.75rem,7.6vw,6.6rem);max-width:12.5ch;margin:1.4rem auto 0}
.hero h1.long{font-size:clamp(2.5rem,6vw,5.3rem);max-width:17ch}
mark{background:linear-gradient(transparent 58%,var(--yellow) 58%,var(--yellow) 92%,transparent 92%);color:inherit;padding:0 .06em;border-radius:2px}
.hero .lead{max-width:36ch;margin:1.3rem auto 0;font-size:clamp(1.08rem,1.6vw,1.3rem);color:var(--muted)}
.cta-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:1rem 1.4rem;margin-top:2rem}
.price-chip{display:flex;flex-direction:column;align-items:flex-start;line-height:1.15;text-align:left}
.price-chip strong{font:700 1.5rem/1 var(--display);letter-spacing:-.02em}
.price-chip span{font-size:.82rem;color:var(--muted);font-weight:600}
.ticks{display:flex;flex-wrap:wrap;justify-content:center;gap:.6rem 1.6rem;list-style:none;margin:1.6rem 0 0;padding:0;font-size:.93rem;font-weight:600;color:var(--muted)}
.ticks li{display:flex;align-items:center;gap:.45rem}
.ticks li::before{content:"";width:18px;height:18px;border-radius:50%;background:var(--ok-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3.2 3L15 6.8' fill='none' stroke='%230f8a5f' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat}

/* Tela da aula */
.stage{position:relative;width:min(1040px,100% - 32px);margin:clamp(36px,4.5vw,56px) auto 0;perspective:1800px}
.screen{position:relative;border-radius:var(--r);background:#0d1520;padding:10px;box-shadow:var(--shadow),0 0 0 1px rgba(11,36,64,.08);transform-origin:50% 100%}
.screen-bar{display:flex;align-items:center;gap:.5rem;padding:.35rem .5rem .6rem;color:#9fb3c8;font-size:.78rem;font-weight:600}
.screen-bar i{width:9px;height:9px;border-radius:50%;background:#2c3a4b}
.screen-bar i:first-child{background:#ff6b5f}.screen-bar i:nth-child(2){background:#ffcb47}.screen-bar i:nth-child(3){background:#35c95c}
.screen-bar span{margin-left:.6rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.screen img{width:100%;border-radius:12px;aspect-ratio:16/9;object-fit:cover;background:#fff}
.stage figcaption{margin-top:.9rem;font-size:.82rem;color:var(--muted);font-weight:600}
.note{position:absolute;z-index:2;max-width:210px;padding:.75rem .9rem;border-radius:12px;background:var(--yellow);color:var(--ink-deep);font:700 .9rem/1.3 var(--display);letter-spacing:-.01em;text-align:left;box-shadow:0 14px 30px -14px rgba(11,36,64,.45)}
.note.n1{left:-34px;top:56%;transform:rotate(-4deg)}
/* Interpretação: título no alto à esquerda e lista na coluna esquerda; as notas ficam no branco à direita. */
.stage-in .note.n1{left:auto;right:-30px;top:46%;transform:rotate(3deg)}
.stage-in .note.n2{bottom:15%;transform:rotate(-2deg)}
.note.n2{right:-30px;bottom:18%;transform:rotate(3deg);background:#fff;box-shadow:0 14px 30px -14px rgba(11,36,64,.45),inset 0 0 0 1px var(--line)}
.note.n2 em{font-style:normal;color:var(--blue)}
@media (max-width:1120px){.note{display:none}}
@media (prefers-reduced-motion:no-preference){
  @supports (animation-timeline:view()){
    .screen{animation:tilt linear both;animation-timeline:view();animation-range:entry 10% cover 45%}
    @keyframes tilt{from{transform:rotateX(16deg) scale(.93)}to{transform:none}}
  }
}

/* Faixa de números */
.numbers{margin-top:clamp(64px,9vw,120px);background:var(--ink-deep);color:#fff;position:relative;overflow:hidden}
.numbers::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:34px 34px}
.numbers ul{position:relative;list-style:none;margin:0 auto;padding:clamp(40px,6vw,72px) 0;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.numbers li{display:flex;flex-direction:column;gap:.5rem;padding-left:1.25rem;border-left:2px solid rgba(255,218,85,.5)}
.numbers b{font:700 clamp(3.2rem,7vw,5.6rem)/.9 var(--display);letter-spacing:-.05em;color:var(--yellow)}
.numbers span{max-width:18ch;font-size:1rem;color:#c9d6e6;font-weight:600}
@media (max-width:860px){.numbers ul{grid-template-columns:repeat(2,1fr);gap:28px 20px}}

/* Seções */
.sec{padding:clamp(72px,10vw,128px) 0;overflow-x:clip}
.sec-alt{background:var(--paper-2)}
.eyebrow{display:inline-block;font:700 .78rem/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:1rem}
.sec h2{font-size:clamp(2.2rem,4.8vw,3.9rem);max-width:16ch}
.sec .sub{margin-top:1rem;max-width:46ch;font-size:1.12rem;color:var(--muted)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:1.5rem;margin-bottom:clamp(32px,5vw,56px)}
.center{text-align:center}.center h2,.center .sub{margin-inline:auto}

/* Demonstração */
.tabs{display:inline-flex;gap:4px;padding:5px;border-radius:999px;background:#fff;box-shadow:inset 0 0 0 1px var(--line)}
.tabs button{border:0;background:none;padding:.6rem 1.1rem;border-radius:999px;font-weight:700;font-size:.93rem;cursor:pointer;color:var(--muted)}
.tabs button[aria-selected=true]{background:var(--ink);color:#fff}
.lab{display:grid;grid-template-columns:1.15fr .85fr;border-radius:28px;background:#fff;box-shadow:var(--shadow),0 0 0 1px var(--line);overflow:hidden}
.lab[hidden]{display:none}
.lab-board{position:relative;padding:clamp(24px,4vw,48px);background:#fff;background-image:linear-gradient(var(--sky) 1px,transparent 1px),linear-gradient(90deg,var(--sky) 1px,transparent 1px);background-size:28px 28px;min-height:420px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:28px}
.lab-side{padding:clamp(24px,3.5vw,40px);background:var(--ink-deep);color:#fff;display:flex;flex-direction:column;gap:1.2rem}
.lab-side h3{font-size:clamp(1.5rem,2.4vw,2rem);letter-spacing:-.025em}
.lab-side .say{min-height:4.6em;font-size:clamp(1.1rem,1.6vw,1.3rem);line-height:1.45;color:#dbe6f3}
.lab-side .say b{color:var(--yellow)}
.dots{display:flex;gap:6px}
.dots i{flex:1;height:5px;border-radius:9px;background:rgba(255,255,255,.16);transition:background .3s}
.dots i.on{background:var(--yellow)}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:.35rem;counter-reset:st;font-size:.95rem;font-weight:600;color:#7f95ad}
.steps li{counter-increment:st;display:flex;align-items:center;gap:.7rem;padding:.45rem .6rem;border-radius:10px;transition:background .3s,color .3s}
.steps li::before{content:counter(st);display:grid;place-items:center;width:1.6rem;height:1.6rem;border-radius:50%;background:rgba(255,255,255,.08);font:700 .8rem/1 var(--display)}
.steps li.done{color:#c9d6e6}.steps li.done::before{content:"✓";background:rgba(255,218,85,.2);color:var(--yellow)}
.steps li.on{background:rgba(255,255,255,.07);color:#fff}.steps li.on::before{background:var(--yellow);color:var(--ink-deep)}
@media (max-width:860px){.steps{display:none}}
.lab-actions{display:flex;gap:.6rem;margin-top:auto;flex-wrap:wrap}
.lab-actions .btn{padding:.85rem 1.2rem;font-size:.95rem}
.lab-actions .btn-back{background:rgba(255,255,255,.08);color:#fff}
.lab-actions .btn-back:disabled{opacity:.35;cursor:default}
@media (max-width:860px){.lab{grid-template-columns:1fr}.lab-board{min-height:340px}}

/* Conta armada (vai um) */
.conta{display:grid;grid-template-columns:repeat(3,clamp(54px,9vw,84px));font:700 clamp(2.6rem,6vw,4.4rem)/1 var(--display);letter-spacing:-.02em;text-align:center;color:var(--ink)}
.conta>span{height:1.25em;display:grid;place-items:center;position:relative;transition:background .3s}
.conta .lbl{font:700 .72rem/1 var(--body);letter-spacing:.12em;color:var(--muted);height:1.6rem}
.conta .rule{grid-column:1/-1;height:4px;border-radius:4px;background:var(--ink);margin:.15em 0}
.conta .op{color:var(--blue)}
.conta .cr{height:.9em;font-size:.55em}
.carry{display:inline-grid;place-items:center;width:1.5em;height:1.5em;border-radius:50%;background:var(--yellow);color:var(--ink-deep);font-size:.8em;opacity:0;transform:translate(1.9em,4.3em) scale(.6)}
.res-d{opacity:0;transform:translateY(-.3em);transition:opacity .4s,transform .4s;color:var(--blue)}
.col-u,.col-t{border-radius:10px}
[data-s="0"] .col-u,[data-s="1"] .col-u{background:rgba(255,218,85,.35)}
[data-s="3"] .col-t{background:rgba(255,218,85,.35)}
.s2 .carry{opacity:1;transform:none;transition:transform .7s cubic-bezier(.3,1.4,.5,1),opacity .2s}
.s2 .res-u,.s3 .res-t{opacity:1;transform:none}
.cubes{display:flex;align-items:center;gap:18px;min-height:64px;flex-wrap:wrap;justify-content:center;opacity:0;transition:opacity .4s}
.s1 .cubes{opacity:1}
.cubes .grp{display:grid;grid-template-columns:repeat(5,16px);gap:4px}
.cubes .grp i{width:16px;height:16px;border-radius:4px;background:var(--blue);box-shadow:inset 0 -3px 0 rgba(0,0,0,.18);transition:transform .5s,opacity .5s,background .3s}
.cubes .bar{display:flex;align-items:center;gap:8px;font-weight:800;font-size:.85rem;color:var(--ink);opacity:0;transform:scale(.6);transition:opacity .4s .25s,transform .5s .25s}
.cubes .bar i{width:16px;height:94px;border-radius:5px;background:linear-gradient(var(--yellow-deep),var(--yellow));box-shadow:inset 0 -3px 0 rgba(0,0,0,.12);background-image:repeating-linear-gradient(var(--yellow) 0 7px,var(--yellow-deep) 7px 9px)}
.s2 .cubes .ten i{transform:scale(.2);opacity:0}
.s2 .cubes .bar{opacity:1;transform:none}
.cubes small{display:block;width:100%;text-align:center;font-weight:700;color:var(--muted);font-size:.85rem}
.check{font:700 1.15rem/1.2 var(--display);color:var(--ok);opacity:0;transition:opacity .4s}
.s4 .check{opacity:1}

/* Ordem das operações */
.expr{font:700 clamp(2.8rem,7vw,4.8rem)/1 var(--display);letter-spacing:-.03em;display:flex;gap:.25em;align-items:center}
.expr .hl{padding:0 .12em;border-radius:12px;transition:background .4s,color .4s}
.expr.go .hl{background:var(--yellow)}
.expr .eq{color:var(--blue);opacity:0;transition:opacity .4s}
.expr.done .eq{opacity:1}
.choice{display:grid;gap:.6rem;width:100%;max-width:420px}
.choice button{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.1rem;border-radius:14px;border:0;background:#fff;box-shadow:inset 0 0 0 1.5px var(--line);font-weight:700;cursor:pointer;text-align:left}
.choice button:hover{box-shadow:inset 0 0 0 1.5px var(--ink)}
.choice button.ok{background:var(--ok-bg);box-shadow:inset 0 0 0 2px var(--ok)}
.choice button.no{background:var(--no-bg);box-shadow:inset 0 0 0 2px var(--no)}

/* Interpretação: pistas */
.enun{max-width:34ch;font:600 clamp(1.25rem,2.4vw,1.65rem)/1.55 var(--display);letter-spacing:-.01em;text-align:left}
.pista{border:0;padding:.05em .3em;margin:0 -.05em;border-radius:8px;background:var(--sky);box-shadow:inset 0 -2px 0 var(--blue);font:inherit;cursor:pointer;transition:background .2s,transform .15s}
.pista:hover{transform:translateY(-1px)}
.pista.on{background:var(--yellow);box-shadow:inset 0 -2px 0 var(--yellow-deep)}
.enun-note{font-size:.82rem;color:var(--muted);font-weight:600;align-self:flex-start}
.polya{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;font-size:.78rem;font-weight:700;color:#8ea3bb}
.polya span{padding-top:.5rem;border-top:4px solid rgba(255,255,255,.14);transition:color .3s,border-color .3s}
.polya span.on{color:var(--yellow);border-color:var(--yellow)}
.mont{display:grid;gap:.5rem;font-size:1rem}
.mont li{list-style:none;padding:.65rem .8rem;border-radius:10px;background:rgba(255,255,255,.07);animation:pop .35s ease both}
.mont li b{color:var(--yellow)}
.mont .eqn{font:700 1.25rem/1.2 var(--display)}
@keyframes pop{from{opacity:0;transform:translateY(6px)}}
.mont{margin:0;padding:0}

/* Questão de múltipla escolha */
.alts{display:flex;flex-wrap:wrap;gap:.5rem}
.alts button{min-width:62px;padding:.8rem 1rem;border-radius:12px;border:0;background:#fff;box-shadow:inset 0 0 0 1.5px var(--line);font:700 1.2rem/1 var(--display);cursor:pointer}
.alts button.ok{background:var(--ok-bg);box-shadow:inset 0 0 0 2px var(--ok)}
.alts button.no{background:var(--no-bg);box-shadow:inset 0 0 0 2px var(--no)}
.fb{font-size:1rem;color:#dbe6f3}
.fb .alg{display:block;margin:.6rem 0;font:700 1.15rem/1.3 var(--display);color:var(--yellow)}

/* Carrossel */
.rail-ctrl{display:flex;gap:.5rem}
.rail-ctrl button{width:48px;height:48px;border-radius:50%;border:0;background:#fff;box-shadow:inset 0 0 0 1.5px var(--line);cursor:pointer;font-size:1.2rem}
.rail-ctrl button:hover{box-shadow:inset 0 0 0 1.5px var(--ink)}
.rail{display:grid;grid-auto-flow:column;grid-auto-columns:min(360px,82%);gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px max(16px,calc((100% - var(--w))/2)) 28px;scroll-padding-inline:max(16px,calc((100% - var(--w))/2));scrollbar-width:none;-webkit-overflow-scrolling:touch}
.rail::-webkit-scrollbar{display:none}
.card{scroll-snap-align:start;position:relative;display:flex;flex-direction:column;min-height:400px;padding:28px;border-radius:26px;background:#fff;box-shadow:0 0 0 1px var(--line),0 20px 40px -30px rgba(11,36,64,.4);overflow:hidden}
.card:nth-child(3n+1){background:var(--sky)}
.card:nth-child(3n+2){background:#fff8db}
.card .k{font:700 .85rem/1 var(--display);letter-spacing:.08em;color:var(--muted)}
.card .glyph{margin:auto 0;font:700 7.5rem/1 var(--display);letter-spacing:-.06em;color:var(--ink);opacity:.92}
.card .glyph small{font-size:.4em;letter-spacing:-.02em}
.card h3{font-size:1.55rem;letter-spacing:-.025em;line-height:1.1}
.card p{margin-top:.55rem;color:var(--muted);font-size:.98rem}

/* Material */
.mat{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(32px,6vw,80px);align-items:center}
.fan{position:relative;height:clamp(360px,42vw,520px)}
.paper{position:absolute;top:50%;left:50%;width:clamp(150px,15.5vw,224px);border:0;padding:0;background:#fff;border-radius:10px;cursor:pointer;box-shadow:0 26px 50px -24px rgba(11,36,64,.5),0 0 0 1px var(--line);transition:transform .35s cubic-bezier(.3,1.2,.5,1)}
.paper img{border-radius:10px}
.paper span{position:absolute;left:50%;bottom:-14px;transform:translateX(-50%);white-space:nowrap;padding:.4rem .75rem;border-radius:999px;background:var(--ink);color:#fff;font-size:.78rem;font-weight:700;opacity:0;transition:opacity .2s}
.paper:hover span,.paper:focus-visible span{opacity:1}
.paper.p1{transform:translate(-112%,-50%) rotate(-8deg)}
.paper.p2{transform:translate(-50%,-54%);z-index:2}
.paper.p3{transform:translate(12%,-50%) rotate(7deg)}
.paper.p1:hover{transform:translate(-116%,-56%) rotate(-10deg)}
.paper.p2:hover{transform:translate(-50%,-60%)}
.paper.p3:hover{transform:translate(16%,-56%) rotate(9deg)}
.paper.solo{width:min(100%,520px);transform:translate(-50%,-50%) rotate(-2deg)}
.paper.solo:hover{transform:translate(-50%,-53%) rotate(-1deg)}
.mat ul{list-style:none;padding:0;margin:1.6rem 0 0;display:grid;gap:.75rem}
.mat li{display:flex;gap:.85rem;align-items:flex-start;padding:1rem 1.1rem;border-radius:16px;background:#fff;box-shadow:0 0 0 1px var(--line)}
.mat li b{display:grid;place-items:center;flex:none;width:2.1rem;height:2.1rem;border-radius:10px;background:var(--yellow);font:700 1rem/1 var(--display)}
.mat li span{font-weight:600}
.mat li small{display:block;color:var(--muted);font-weight:500;font-size:.92rem}
@media (max-width:860px){.mat{grid-template-columns:1fr}.fan{order:-1}}
@media (max-width:600px){.fan{height:300px}.paper{width:36vw}.paper.solo{width:100%}.prof-photo::before{width:64px;height:64px;right:-8px;top:-20px}}

dialog{border:0;padding:0;border-radius:20px;max-width:min(560px,94vw);max-height:92vh;box-shadow:0 40px 80px -20px rgba(0,0,0,.5);overflow:auto}
dialog::backdrop{background:rgba(11,36,64,.6);backdrop-filter:blur(4px)}
dialog .dlg-top{position:sticky;top:0;display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.2rem;background:#fff;border-bottom:1px solid var(--line);font-weight:700}
dialog .dlg-top button{border:0;background:var(--paper-2);width:38px;height:38px;border-radius:50%;cursor:pointer;font-size:1.1rem}
dialog .dlg-body{padding:1.2rem;display:grid;gap:1rem}
dialog .dlg-body p{color:var(--muted);font-size:.95rem}
dialog .dlg-body img{border-radius:8px;box-shadow:0 0 0 1px var(--line)}

/* Professor */
.prof{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(32px,6vw,88px);align-items:center}
.prof-photo{position:relative}
.prof-photo img{border-radius:28px;width:100%;box-shadow:var(--shadow)}
.prof-photo::before{content:"";position:absolute;width:86px;height:86px;right:-26px;top:-26px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 40 40'%3E%3Cpath d='M15 3h10v12h12v10H25v12H15V25H3V15h12z' fill='%23ffda55' stroke='%230b2440' stroke-width='0' rx='3'/%3E%3C/svg%3E") center/contain no-repeat;z-index:1}
.prof h2{font-size:clamp(2.6rem,5.5vw,4.4rem)}
.prof .role{margin-top:1rem;font-size:1.2rem;color:var(--muted);max-width:30ch}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.6rem;padding:0;list-style:none}
.chips li{padding:.55rem .95rem;border-radius:999px;background:var(--sky);font-weight:700;font-size:.92rem}
.prof blockquote{margin:2rem 0 0;padding-left:1.1rem;border-left:4px solid var(--yellow);font:700 clamp(1.3rem,2.4vw,1.7rem)/1.25 var(--display);letter-spacing:-.02em}
@media (max-width:760px){.prof{grid-template-columns:1fr}.prof-photo{max-width:420px}}

/* Oferta */
.offers{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:stretch;max-width:980px;margin:0 auto}
.offer{position:relative;display:flex;flex-direction:column;padding:clamp(26px,3.5vw,40px);border-radius:28px;background:#fff;box-shadow:0 0 0 1px var(--line),0 24px 50px -36px rgba(11,36,64,.5)}
.offer.feat{background:var(--ink-deep);color:#fff;box-shadow:var(--shadow)}
.offer .tag{align-self:flex-start;padding:.38rem .75rem;border-radius:999px;background:var(--sky);color:var(--ink);font-size:.78rem;font-weight:800;letter-spacing:.02em}
.offer.feat .tag{background:var(--yellow);color:var(--ink-deep)}
.offer h3{margin-top:1.1rem;font-size:1.7rem;letter-spacing:-.025em}
.offer .amt{display:flex;align-items:baseline;gap:.45rem;margin-top:1.1rem;font:700 clamp(3rem,6vw,4.2rem)/1 var(--display);letter-spacing:-.05em}
.offer .amt small{font:600 1rem/1 var(--body);letter-spacing:0;color:var(--muted)}
.offer.feat .amt small{color:#a8bbd0}
.offer .once{margin-top:.35rem;font-size:.88rem;font-weight:600;color:var(--muted)}
.offer.feat .once{color:#a8bbd0}
.offer ul{list-style:none;margin:1.5rem 0 1.8rem;padding:1.4rem 0 0;border-top:1px solid var(--line);display:grid;gap:.7rem}
.offer.feat ul{border-top-color:rgba(255,255,255,.12)}
.offer li{display:flex;gap:.6rem;font-weight:600}
.offer li::before{content:"✓";color:var(--ok);font-weight:800}
.offer.feat li::before{color:var(--yellow)}
.offer .btn{margin-top:auto;width:100%}
.offer:not(.feat) .btn{background:var(--ink);color:#fff;box-shadow:none}
.offer:not(.feat) .btn:hover{background:var(--ink-deep)}
@media (max-width:760px){.offers{grid-template-columns:1fr}}
.guar{display:flex;align-items:center;gap:1.4rem;max-width:980px;margin:22px auto 0;padding:1.4rem 1.6rem;border-radius:22px;background:#fff8db}
.seal{flex:none;display:grid;place-items:center;width:84px;height:84px;border-radius:50%;background:var(--yellow);box-shadow:0 0 0 6px #fff,0 0 0 7px var(--yellow-deep);text-align:center;font:700 .72rem/1 var(--body);letter-spacing:.06em;text-transform:uppercase}
.seal b{display:block;font:700 2rem/.9 var(--display);letter-spacing:-.04em}
.guar p{font-size:.98rem;color:var(--muted)}
.guar p strong{display:block;color:var(--ink);font:700 1.2rem/1.3 var(--display);letter-spacing:-.01em}
.fine{max-width:980px;margin:14px auto 0;text-align:center;font-size:.85rem;color:var(--muted)}

/* Dúvidas */
.faq{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(32px,6vw,80px)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;display:flex;justify-content:space-between;gap:1rem;padding:1.3rem 0;cursor:pointer;font:700 1.15rem/1.3 var(--display);letter-spacing:-.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--sky);font-size:1.2rem;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg);background:var(--yellow)}
.faq details p{padding:0 0 1.3rem;color:var(--muted);max-width:60ch}
.faq .contact{margin-top:1.5rem;color:var(--muted)}
@media (max-width:760px){.faq{grid-template-columns:1fr}}

/* Fechamento */
.final{position:relative;padding:clamp(80px,11vw,140px) 0;text-align:center;background:var(--ink-deep);color:#fff;overflow:hidden;isolation:isolate}
.final::before{content:"";position:absolute;inset:0;z-index:-1;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:34px 34px;-webkit-mask-image:radial-gradient(ellipse at center,#000 20%,transparent 70%);mask-image:radial-gradient(ellipse at center,#000 20%,transparent 70%)}
.final h2{font-size:clamp(2.6rem,6.5vw,5.4rem);max-width:13ch;margin:0 auto}
.final h2 mark{background:none;color:var(--yellow)}
.final p{margin-top:1.4rem;color:#a8bbd0;font-weight:600}
.final .btn{margin-top:2rem}

.foot{padding:40px 0 calc(40px + env(safe-area-inset-bottom));font-size:.88rem;color:var(--muted)}
.foot .wrap{display:flex;flex-wrap:wrap;gap:1rem 2rem;justify-content:space-between;align-items:center}
.foot nav{display:flex;gap:1.2rem}
.foot p{max-width:62ch}

/* Barra fixa no celular */
.mbar{position:fixed;left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:50;display:flex;align-items:center;justify-content:space-between;gap:.8rem;padding:.6rem .6rem .6rem 1rem;border-radius:18px;background:var(--ink-deep);color:#fff;box-shadow:0 18px 40px -12px rgba(11,36,64,.6);transform:translateY(140%);transition:transform .3s ease}
.mbar.show{transform:none}
.mbar span{font-size:.86rem;font-weight:700;line-height:1.2}
.mbar span small{display:block;color:#a8bbd0;font-weight:600}
.mbar .btn{padding:.8rem 1.1rem;font-size:.92rem}
@media (min-width:861px){.mbar{display:none}}

/* Revelar ao rolar (só com JS e sem redução de movimento) */
.motion .rv{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.motion .rv.in{opacity:1;transform:none}

/* Herói: benefícios e prova curta */
.ticks.points{margin-top:1.4rem;font-size:.98rem;color:var(--ink)}
.proof-line{display:flex;flex-wrap:wrap;justify-content:center;gap:.4rem 1.2rem;margin-top:1.3rem;font-size:.9rem;font-weight:600;color:var(--muted)}
.proof-line a{text-decoration:none;color:var(--ink);border-bottom:1.5px solid var(--yellow-deep)}
.proof-line a::before{content:"";display:inline-block;width:.6rem;height:.6rem;margin-right:.45rem;border-radius:2px;background:var(--yellow-deep);transform:rotate(45deg) translateY(-1px)}
.proof-line span::before{content:"·";margin-right:1.2rem;color:var(--line)}
@media (max-width:560px){.proof-line span{display:none}}

/* Dor: três cenas e a tese */
.dor{list-style:none;margin:clamp(28px,4vw,44px) 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.dor li{position:relative;padding:22px 22px 26px;border-radius:var(--r);background:var(--paper-2);box-shadow:inset 0 0 0 1px var(--line)}
.dor span{font:700 .82rem/1 var(--display);color:var(--no);letter-spacing:.06em}
.dor p{margin-top:.7rem;font:600 1.12rem/1.4 var(--display);letter-spacing:-.01em;color:var(--ink)}
.tese{max-width:68ch;margin-top:clamp(24px,3vw,36px);padding:clamp(20px,2.6vw,28px);border-radius:var(--r);background:var(--ink-deep);color:#d6e2f0;font-size:1.06rem;line-height:1.65}
.tese b{color:var(--yellow)}
@media (max-width:860px){.dor{grid-template-columns:1fr}}

/* Prova social */
.prova-head{max-width:760px;margin:0 auto clamp(28px,4vw,44px)}
.prova-head .sub{margin-inline:auto}
.quotes{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.quotes li{display:flex;flex-direction:column;justify-content:space-between;gap:1.2rem;padding:26px;border-radius:var(--r);background:#fff;box-shadow:var(--shadow),inset 0 0 0 1px var(--line)}
.quotes blockquote{margin:0;font:700 clamp(1.3rem,2.1vw,1.6rem)/1.2 var(--display);letter-spacing:-.025em;color:var(--ink)}
.quotes blockquote::before{content:"";display:block;width:34px;height:6px;margin-bottom:1rem;border-radius:4px;background:var(--yellow)}
.quotes p{display:flex;flex-direction:column;gap:.2rem;font-size:.95rem}
.src{font-size:.82rem;font-weight:600;color:var(--muted)}
.src-hot{color:#d2451e}
.fine.center{text-align:center;margin-top:1.2rem}
.fine a{color:var(--blue)}
@media (max-width:860px){.quotes{grid-template-columns:1fr}}

/* Páginas legais e de contato */
.legal h1{font-size:clamp(2.2rem,5vw,3.4rem);margin-bottom:1.5rem}
.legal-body{max-width:72ch;color:var(--ink);font-size:1rem;line-height:1.7}
.legal-body h2,.legal-body h3,.legal-body h4{font-size:1.3rem;margin:2rem 0 .6rem;letter-spacing:-.02em}
.legal-body p,.legal-body li{margin:0 0 .8rem;color:#2c4766}
.legal-body a{color:var(--blue)}