:root{
  /* extraídos do ícone e das telas do app */
  --bg:#0A0A0B;
  --surface:#161618;
  --surface-2:#1F1F23;
  --line:rgba(245,245,247,.10);
  --line-2:rgba(245,245,247,.18);
  --text:#F5F5F7;
  --dim:#A1A1A6;
  --faint:#6E6E73;

  --blue:#2563EB;
  --violet:#7C3AED;
  --indigo:#6C5CE7;
  --grad:linear-gradient(135deg,#2563EB 0%,#7C3AED 100%);

  --yellow:#FFD426;
  --green:#00E07A;
  --red:#FF2D55;
  --pink:#FF2D6F;
  --orange:#FF9F0A;
  --magenta:#E040FB;

  --maxw:1140px;
  --display:"Archivo",system-ui,sans-serif;
  --body:"Inter Tight",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--indigo);outline-offset:3px;border-radius:6px}

.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--yellow);color:#1A1500;padding:11px 18px;border-radius:0 0 10px 0;font-weight:600;font-size:14px}
.skip:focus{left:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--yellow)}
h1,h2,h3{font-family:var(--display);line-height:1.02;letter-spacing:-.025em}
h2{font-size:clamp(32px,4.6vw,54px);font-variation-settings:"wdth" 100,"wght" 850;margin:14px 0 16px}
h2 .y{color:var(--yellow)}
.lede{color:var(--dim);font-size:18px;max-width:56ch}

/* header */
.hdr{position:sticky;top:0;z-index:50;background:rgba(10,10,11,.8);backdrop-filter:blur(16px);border-bottom:1px solid transparent;transition:border-color .3s}
.hdr.stuck{border-bottom-color:var(--line)}
.hdr-in{display:flex;align-items:center;gap:14px;height:66px;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:center;gap:10px;margin-right:auto}
.brand img{width:32px;height:32px;border-radius:9px}
.brand span{font-family:var(--display);font-variation-settings:"wdth" 105,"wght" 850;font-size:19px;letter-spacing:-.02em}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;padding:3px;font-family:var(--mono);font-size:11px}
.lang a{padding:4px 10px;border-radius:999px;color:var(--faint);transition:.2s;text-decoration:none}
.lang a:hover{color:var(--text)}
.lang a[aria-current="page"]{background:var(--surface-2);color:var(--text)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 22px;border-radius:999px;font-weight:600;font-size:15px;background:var(--grad);color:#fff;transition:transform .18s cubic-bezier(.2,.8,.2,1),box-shadow .18s;box-shadow:0 8px 24px -10px rgba(124,58,237,.7);white-space:nowrap}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 38px -10px rgba(124,58,237,.85)}
.btn.sm{padding:10px 17px;font-size:14px}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line-2);box-shadow:none}
.btn.ghost:hover{border-color:var(--indigo);box-shadow:none}
.btn.yellow{background:var(--yellow);color:#1A1500;box-shadow:0 8px 24px -12px rgba(255,212,38,.8)}
.btn.store{padding:11px 20px 11px 17px;text-align:left;line-height:1.15}
.btn.store .sl{display:block;font-family:var(--mono);font-size:9px;letter-spacing:.1em;text-transform:uppercase;opacity:.75;font-weight:400}
.btn.store .sn{display:block;font-size:15.5px;font-weight:600;letter-spacing:-.01em}
.btn.store svg{flex:none}
.btn.dark{background:var(--surface-2);color:var(--text);border:1px solid var(--line-2);box-shadow:none}
.btn.dark:hover{border-color:var(--line-2);background:#26262B;box-shadow:0 10px 26px -14px #000}
.btn.white{background:#fff;color:#0A0A0B;box-shadow:0 8px 24px -12px rgba(0,0,0,.6)}
.devices{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;color:var(--faint);margin-top:14px}
.devices span{border:1px solid var(--line);border-radius:6px;padding:3px 8px}
.hdr .btn{display:none}
@media(min-width:640px){.hdr .btn{display:inline-flex}}

/* hero */
.hero{position:relative;padding:60px 0 90px;overflow:hidden}
.hero::before{content:"";position:absolute;top:-240px;left:-140px;width:760px;height:640px;pointer-events:none;background:radial-gradient(48% 50% at 50% 50%,rgba(37,99,235,.30),transparent 70%)}
.hero::after{content:"";position:absolute;top:40px;right:-200px;width:700px;height:640px;pointer-events:none;background:radial-gradient(48% 50% at 50% 50%,rgba(124,58,237,.28),transparent 70%)}
.hero-grid{position:relative;display:grid;gap:52px;align-items:center;grid-template-columns:1fr}
@media(min-width:980px){.hero-grid{grid-template-columns:1.02fr .98fr;gap:44px}}
h1{font-size:clamp(40px,6.1vw,66px);font-variation-settings:"wdth" 102,"wght" 880;margin:18px 0 20px}
h1 .y{color:var(--yellow)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 22px}
.trust{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;color:var(--faint)}
.trust .stars{color:var(--yellow);letter-spacing:2px}
.trust b{color:var(--dim);font-weight:500}

/* animação de entrada: só existe se o JS estiver vivo (.js no <html>).
   Sem JS, o conteúdo aparece normal em vez de sumir. */
.js .rv{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.js .rv.in{opacity:1;transform:none}

/* ---- signature: card ao vivo ---- */
.demo{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:26px;padding:18px;box-shadow:0 50px 90px -40px #000}
.demo::before{content:"";position:absolute;inset:-1px;border-radius:26px;padding:1px;background:var(--grad);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.5;pointer-events:none}
.demo-top{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.streak{display:inline-flex;align-items:center;gap:6px;border:1px solid rgba(255,212,38,.4);background:rgba(255,212,38,.08);color:var(--yellow);border-radius:999px;padding:5px 11px;font-family:var(--mono);font-size:11px;font-weight:500}
.xp{margin-left:auto;font-family:var(--mono);font-size:11px;color:var(--faint)}
.xp b{color:var(--text);font-weight:500}
.counter{font-family:var(--mono);font-size:11px;color:var(--faint)}

.xpbar{height:4px;border-radius:99px;background:var(--surface-2);overflow:hidden;margin-bottom:14px}
.xpbar i{display:block;height:100%;width:20%;background:var(--grad);border-radius:99px;transition:width .5s cubic-bezier(.2,.8,.2,1)}

.stage{perspective:1400px;height:216px;margin-bottom:14px}
.card3d{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.3,1.15,.4,1);cursor:pointer}
.card3d.flipped{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:18px;padding:24px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;border:1px solid var(--line)}
.face.front{background:var(--grad);color:#fff;border-color:transparent}
.face.back{transform:rotateY(180deg);background:var(--surface-2);color:var(--text)}
.face .tag{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;opacity:.72;margin-bottom:12px}
.face p{font-family:var(--display);font-variation-settings:"wdth" 100,"wght" 720;font-size:21px;line-height:1.24;letter-spacing:-.015em}
.face .hint{margin-top:16px;font-family:var(--mono);font-size:10px;opacity:.6;letter-spacing:.08em}

.modes{display:flex;gap:4px;border:1px solid var(--line);border-radius:999px;padding:3px;margin-bottom:12px;font-family:var(--mono);font-size:10.5px}
.modes button{flex:1;padding:6px 8px;border-radius:999px;color:var(--faint);transition:.2s;letter-spacing:.04em}
.modes button[aria-pressed="true"]{background:var(--surface-2);color:var(--text)}

.grades{display:grid;gap:8px;opacity:.28;pointer-events:none;transition:opacity .35s}
.grades.on{opacity:1;pointer-events:auto}
.grades[data-mode="quick"]{grid-template-columns:1fr 1fr}
.grades[data-mode="full"]{grid-template-columns:repeat(4,1fr)}
.grade{border:1px solid var(--line);border-radius:12px;padding:11px 4px 10px;text-align:center;transition:transform .15s,background .2s,border-color .2s}
.grade:hover{transform:translateY(-2px);background:var(--surface-2)}
.grade .lb{display:block;font-size:13.5px;font-weight:600}
.grade .iv{display:block;font-family:var(--mono);font-size:10px;color:var(--faint);margin-top:3px}
.grade[data-g="wrong"] .lb,.grade[data-g="forgot"] .lb{color:var(--red)}
.grade[data-g="right"] .lb{color:var(--green)}
.grade[data-g="hard"] .lb{color:var(--orange)}
.grade[data-g="good"] .lb{color:var(--indigo)}
.grade[data-g="easy"] .lb{color:var(--green)}
.grade[data-g="wrong"]:hover,.grade[data-g="forgot"]:hover{border-color:var(--red)}
.grade[data-g="right"]:hover,.grade[data-g="easy"]:hover{border-color:var(--green)}
.grade[data-g="hard"]:hover{border-color:var(--orange)}
.grade[data-g="good"]:hover{border-color:var(--indigo)}

.demo-foot{margin-top:13px;padding-top:12px;border-top:1px solid var(--line);min-height:38px;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:11.5px;color:var(--faint);text-align:center}
.demo-foot b{color:var(--yellow);font-weight:500}
.demo-foot.pulse{animation:pulse .5s ease}
@keyframes pulse{0%{opacity:.15;transform:translateY(4px)}100%{opacity:1;transform:none}}
.done{display:flex;flex-direction:column;align-items:center;gap:11px;justify-content:center;height:100%;text-align:center;padding:16px}
.done h3{font-size:23px;font-variation-settings:"wdth" 102,"wght" 850}
.done p{font-size:14px;color:var(--dim);max-width:34ch;line-height:1.5}

section{padding:88px 0}
.sec-head{max-width:720px;margin-bottom:46px}
.s-shots{padding-bottom:60px}
.s-faq{padding-top:20px}
.s-cta{padding-top:16px}
.sec-head.tight{margin-bottom:26px}

/* curva SM-2 */
.curve-wrap{border:1px solid var(--line);border-radius:22px;background:radial-gradient(80% 100% at 50% 0%,rgba(255,45,111,.10),transparent 70%),var(--surface);padding:26px 22px 18px}
.curve-legend{display:flex;gap:22px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;color:var(--faint);margin-top:10px}
.curve-legend i{display:inline-block;width:16px;height:2px;vertical-align:middle;margin-right:7px;border-radius:2px}
svg .draw{stroke-dasharray:1600;stroke-dashoffset:1600;transition:stroke-dashoffset 2.1s ease .15s}
.in svg .draw{stroke-dashoffset:0}
.sm2-chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.chip{font-family:var(--mono);font-size:10.5px;border:1px solid var(--line-2);border-radius:8px;padding:6px 11px;color:var(--dim)}
.chip.g{border-color:rgba(0,224,122,.5);color:var(--green)}
.chip.o{border-color:rgba(255,159,10,.5);color:var(--orange)}
.chip.m{border-color:rgba(224,64,251,.5);color:var(--magenta)}

/* pilares */
.pillars{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:720px){.pillars{grid-template-columns:1fr 1fr}}
.pillar{position:relative;border:1px solid var(--line);border-radius:20px;padding:26px;background:var(--surface);transition:border-color .3s,transform .3s}
.pillar:hover{border-color:var(--line-2);transform:translateY(-3px)}
.pillar .num{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;color:var(--faint)}
.pillar h3{font-size:22px;font-variation-settings:"wdth" 100,"wght" 780;margin:12px 0 9px}
.pillar p{color:var(--dim);font-size:15.5px}
.pillar.ai{background:radial-gradient(90% 120% at 0% 0%,rgba(255,212,38,.10),transparent 60%),var(--surface)}
.pillar.ai .num{color:var(--yellow)}
.pillar.ai h3 span{color:var(--yellow)}

/* streak */
.streak-grid{display:grid;gap:44px;grid-template-columns:1fr;align-items:center}
@media(min-width:900px){.streak-grid{grid-template-columns:1fr 1fr}}
.panel{border:1px solid var(--line);border-radius:22px;padding:24px;background:var(--surface)}
.flame{width:64px;height:64px;margin:6px auto 10px;display:block;filter:drop-shadow(0 0 22px rgba(255,159,10,.55))}
.flame-n{text-align:center;font-family:var(--display);font-variation-settings:"wdth" 100,"wght" 850;font-size:40px}
.flame-l{text-align:center;font-family:var(--mono);font-size:10.5px;color:var(--faint);letter-spacing:.1em;text-transform:uppercase;margin-top:2px}
.track{display:flex;align-items:center;justify-content:space-between;gap:4px;margin:24px 0 6px}
.node{flex:1;text-align:center}
.node .d{width:30px;height:30px;margin:0 auto;border-radius:50%;border:1px solid var(--line-2);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:11px;color:var(--faint);transition:.4s}
.node.done .d{background:var(--yellow);border-color:var(--yellow);color:#1A1500;font-weight:700}
.node .c{font-family:var(--mono);font-size:9px;color:var(--faint);margin-top:6px;display:block}
.node.done .c{color:var(--yellow)}
.heat{display:grid;grid-auto-flow:column;grid-template-rows:repeat(7,1fr);gap:3px;margin-top:20px}
.cell{width:100%;aspect-ratio:1;border-radius:2px;background:var(--surface-2);transition:opacity .4s,transform .4s}
.js .heat .cell{opacity:0;transform:scale(.4)}
.heat.in .cell{opacity:1;transform:none}
.heat-legend{display:flex;align-items:center;gap:5px;justify-content:flex-end;margin-top:12px;font-family:var(--mono);font-size:9.5px;color:var(--faint)}
.heat-legend .cell{width:10px;opacity:1;transform:none}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:24px}
.stat{border:1px solid var(--line);border-radius:14px;padding:15px;background:var(--surface)}
.stat .ic{font-size:15px}
.stat .v{font-family:var(--display);font-variation-settings:"wdth" 100,"wght" 850;font-size:26px;margin-top:5px}
.stat .k{font-family:var(--mono);font-size:9.5px;color:var(--faint);letter-spacing:.08em;text-transform:uppercase;margin-top:2px}

/* categorias */
.cats{display:flex;flex-wrap:wrap;gap:10px}
.cat{border:1px solid var(--line-2);border-radius:14px;padding:11px 16px;font-size:15px;color:var(--dim);display:flex;align-items:center;gap:10px;transition:.25s;background:var(--surface)}
.cat:hover{color:var(--text);transform:translateY(-2px)}
.cat i{width:8px;height:8px;border-radius:50%;flex:none}
.cat em{font-style:normal;font-size:16px}

/* shots */
.shots{display:flex;gap:16px;overflow-x:auto;padding:6px 24px 24px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.shots::-webkit-scrollbar{height:6px}
.shots::-webkit-scrollbar-thumb{background:var(--surface-2);border-radius:99px}
.shot img{width:100%;height:auto;aspect-ratio:440/956}
.shot{flex:none;width:218px;margin:0;border-radius:18px;overflow:hidden;border:1px solid var(--line);scroll-snap-align:center;background:var(--surface)}

/* faq */
.faq{max-width:760px}
details{border-bottom:1px solid var(--line);padding:20px 0}
summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;font-family:var(--display);font-variation-settings:"wdth" 100,"wght" 680;font-size:18px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--yellow);font-family:var(--mono);flex:none;transition:transform .25s}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--dim);font-size:15.5px;margin-top:12px;max-width:64ch}

/* band */
.band{position:relative;border-radius:26px;overflow:hidden;padding:66px 28px;text-align:center;background:var(--grad)}
.band::after{content:"";position:absolute;inset:0;background:radial-gradient(60% 90% at 50% 120%,rgba(255,212,38,.30),transparent 65%);pointer-events:none}
.band>*{position:relative;z-index:1}
.band .eyebrow{color:#FFE787}
.band h2{margin-bottom:14px}
.band .lede{margin:0 auto 28px;color:rgba(255,255,255,.86)}

footer{border-top:1px solid var(--line);padding:44px 0 56px;font-size:14px;color:var(--faint)}
.f-grid{display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;align-items:flex-start}
.f-links{display:flex;flex-wrap:wrap;gap:22px}
.f-links a:hover{color:var(--text)}
.f-note{margin-top:28px;font-family:var(--mono);font-size:11px;line-height:1.8;opacity:.7}

@media(max-width:760px){
  section{padding:52px 0}
  .s-shots{padding-bottom:28px}
  .s-faq{padding-top:8px}
  .s-cta{padding-top:8px}
  .sec-head{margin-bottom:26px}
  .sec-head.tight{margin-bottom:18px}
  .hero{padding:32px 0 52px}
  .hero-grid{gap:34px}
  .streak-grid{gap:30px}
  h2{margin:10px 0 12px}
  .lede{font-size:16.5px}
  .band{padding:46px 20px}
  .pillar{padding:22px}
  .curve-wrap{padding:18px 14px 14px}
  .panel{padding:18px}
  .demo{padding:14px;border-radius:22px}
  .demo::before{border-radius:22px}
  footer{padding:34px 0 44px}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .js .rv{opacity:1;transform:none}
  svg .draw{stroke-dashoffset:0}
  .js .heat .cell{opacity:1;transform:none}
}
/* ═══════════════ BLOG ═══════════════ */
.nav-blog{font-size:14.5px;font-weight:500;color:var(--dim);transition:color .2s;display:none}
.nav-blog:hover{color:var(--text)}
@media(min-width:640px){.nav-blog{display:inline}}

.blog-head{padding:56px 0 10px}
.blog-head h1{font-size:clamp(38px,6vw,60px);font-variation-settings:"wdth" 102,"wght" 880;margin:14px 0 16px}

.post-grid{display:grid;gap:14px;grid-template-columns:1fr}
@media(min-width:760px){.post-grid{grid-template-columns:1fr 1fr}}
.post-card{border:1px solid var(--line);border-radius:20px;padding:26px;background:var(--surface);
  transition:border-color .3s,transform .3s;display:block}
.post-card:hover{border-color:var(--indigo);transform:translateY(-3px)}
.post-card h2{font-size:22px;font-variation-settings:"wdth" 100,"wght" 780;margin:10px 0 9px;letter-spacing:-.02em}
.post-ex{color:var(--dim);font-size:15px;line-height:1.55}
.post-meta{font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:.04em}
.post-meta a{color:var(--faint);transition:color .2s}
.post-meta a:hover{color:var(--yellow)}

/* artigo */
.post{padding:44px 0 80px}
.post-wrap{max-width:760px}
.post h1{font-size:clamp(31px,4.6vw,46px);font-variation-settings:"wdth" 100,"wght" 850;margin:16px 0 14px;letter-spacing:-.025em}

.prose{margin-top:34px;font-size:17.5px;line-height:1.72;color:#DCDCE0}
.prose>*+*{margin-top:1.15em}
.prose h2{font-size:clamp(24px,3vw,31px);font-variation-settings:"wdth" 100,"wght" 800;margin-top:2em;color:var(--text)}
.prose h3{font-size:20px;font-variation-settings:"wdth" 100,"wght" 720;margin-top:1.7em;color:var(--text)}
.prose a{color:var(--yellow);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;
  text-decoration-color:rgba(255,212,38,.4);transition:text-decoration-color .2s}
.prose a:hover{text-decoration-color:var(--yellow)}
.prose strong{color:var(--text);font-weight:600}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin-top:.45em}
.prose li::marker{color:var(--indigo)}
.prose code{font-family:var(--mono);font-size:.86em;background:var(--surface-2);border:1px solid var(--line);
  border-radius:6px;padding:2px 6px;color:var(--yellow)}
.prose pre{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px;overflow-x:auto}
.prose pre code{background:none;border:0;padding:0;color:var(--dim);font-size:13.5px;line-height:1.6}
.prose blockquote{border-left:3px solid var(--indigo);padding-left:20px;color:var(--dim);font-style:italic}
.prose blockquote p{margin:0}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.prose img{border-radius:14px;border:1px solid var(--line);margin:1.6em 0}

.post-cta{margin-top:64px;border:1px solid rgba(124,58,237,.35);border-radius:22px;padding:34px 28px;
  background:radial-gradient(90% 130% at 50% 0%,rgba(124,58,237,.16),transparent 65%),var(--surface);text-align:center}
.post-cta h2{font-size:26px;font-variation-settings:"wdth" 100,"wght" 820;margin-bottom:9px}
.post-cta p{color:var(--dim);font-size:15.5px;margin-bottom:22px}
.post-cta .hero-cta{justify-content:center;margin:0}

@media(max-width:760px){
  .blog-head{padding:36px 0 4px}
  .post{padding:28px 0 56px}
  .post-card{padding:20px}
  .prose{font-size:17px;margin-top:26px}
  .post-cta{padding:28px 20px;margin-top:44px}
}