*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#fafaf9;
  --fg:#1c1917;
  --fg2:#57534e;
  --fg3:#a8a29e;
  --accent:#d97706;
  --accent-hover:#b45309;
  --card:#ffffff;
  --border:#e7e5e4;
  --font:-apple-system,BlinkMacSystemFont,'Segoe UI','Noto Sans',system-ui,sans-serif;
  --mono:'SF Mono','Fira Code','Cascadia Code',monospace
}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--fg);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased
}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-hover)}
strong{font-weight:600;color:var(--fg)}
img{max-width:100%;height:auto}

/* Nav */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(250,250,249,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border)
}
nav .nav-inner{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:.65rem 1.25rem
}
nav .logo{font-weight:700;font-size:1.05rem;letter-spacing:-.02em;color:var(--fg)}
nav .nav-links{display:flex;gap:1rem;align-items:center;flex-wrap:wrap}
nav .nav-links a{font-size:.8125rem;font-weight:500;white-space:nowrap}
nav .user-label{font-size:.75rem;color:var(--fg2);font-weight:500;padding:.15rem .45rem;background:var(--card);border-radius:5px;white-space:nowrap}
a.download{
  padding:.3rem .75rem;border:1px solid var(--accent);border-radius:999px;
  font-size:.75rem
}
a.download:hover{background:var(--accent);color:#fff}

.lang-select{
  font-size:.625rem;padding:.1rem .2rem;
  border:1px solid var(--border);border-radius:4px;
  background:var(--card);color:var(--fg2);
  font-family:var(--font);cursor:pointer;
  margin-left:.5rem;max-width:7rem;
  outline:none;flex-shrink:0
}
.lang-select:focus{border-color:var(--accent)}

/* Slides */
.slides{scroll-snap-type:y mandatory;overflow-y:scroll;height:100vh}
.slide{
  min-height:100vh;display:flex;flex-direction:column;justify-content:center;
  padding:5rem 1.5rem 3rem;scroll-snap-align:start
}
.slide-inner{max-width:680px;width:100%;margin:0 auto}
.slide h2{
  font-size:clamp(1.75rem,4.5vw,3rem);
  font-weight:700;letter-spacing:-.025em;line-height:1.15;margin-bottom:.85rem
}
.slide p{
  margin-bottom:.85rem;font-size:clamp(1rem,2vw,1.125rem);
  color:var(--fg2);line-height:1.65;max-width:600px
}
.slide .tagline{font-size:clamp(1.125rem,2.5vw,1.375rem)!important;color:var(--fg)!important;font-weight:500}
.slide ul{margin-bottom:.85rem;list-style:none}
.slide ul li{margin-bottom:.45rem;margin-left: 20px; font-size:clamp(.9375rem,1.8vw,1.0625rem);color:var(--fg2)}
.slide ul.check li::before{content:"\2713 ";color:var(--accent);font-weight:700}
.slide .em{font-style:italic;color:var(--fg);font-weight:500}
.sub{font-size:.9375rem!important;color:var(--fg2)!important}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:.3rem;
  padding:.6rem 1.25rem;border-radius:999px;
  font-weight:600;font-size:.875rem;
  transition:all .15s;cursor:pointer;border:none;white-space:nowrap
}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-hover);color:#fff}
.btn.secondary{
  background:transparent;color:var(--fg);
  border:1.5px solid var(--border)
}
.btn.secondary:hover{border-color:var(--accent);color:var(--accent)}
.btn.big{padding:.8rem 1.75rem;font-size:1rem}
.btn.small{padding:.35rem .75rem;font-size:.75rem}
.btns{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1.25rem}

/* Formula block */
.formula{
  background:var(--card);border:1px solid var(--border);border-radius:10px;
  padding:1.25rem;margin:.85rem 0
}
.formula p{margin-bottom:.15rem;color:var(--fg);font-size:.875rem}
.formula p.em{color:var(--fg2);font-style:italic;margin-top:.35rem}

/* Standard page */
.page{padding:5rem 1.25rem 3rem;max-width:680px;margin:0 auto}
.page h1{
  font-size:clamp(1.5rem,4vw,2.25rem);
  font-weight:700;letter-spacing:-.025em;line-height:1.15;margin-bottom:.85rem
}
.page h2{font-size:1.2rem;font-weight:600;margin-top:1.75rem;margin-bottom:.65rem}
.page .lede{font-size:1.0625rem;color:var(--fg2);margin-bottom:1.75rem;line-height:1.65}
.page p{margin-bottom:.85rem;color:var(--fg2);font-size:1rem}
.page hr{border:none;border-top:1px solid var(--border);margin:1.25rem 0}

/* Cards */
.card{
  background:var(--card);border:1px solid var(--border);border-radius:10px;
  padding:1.5rem;margin-bottom:1.25rem
}
.cards{display:grid;gap:.85rem;margin:1.25rem 0}
@media(min-width:640px){.cards{grid-template-columns:1fr 1fr}}

/* Landing (invited) */
.landing{max-width:500px;margin:0 auto;text-align:center}
.landing h1{margin-bottom:1.25rem}
.landing .invited-by{font-size:1.15rem!important;color:var(--fg)!important}
.landing .btn{margin-top:.75rem}

/* Steps */
.steps{margin:1.75rem 0;display:flex;flex-direction:column;gap:.85rem}
.step{display:flex;gap:.85rem;align-items:flex-start}
.step .num{
  flex-shrink:0;width:2rem;height:2rem;
  background:var(--accent);color:#fff;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.85rem
}
.step h3{font-weight:600;font-size:1rem;margin-bottom:.1rem}
.step p{font-size:.875rem!important;color:var(--fg2)!important;margin:0!important}

/* Forms */
.form-page{max-width:440px}
.form-page form{display:flex;flex-direction:column;gap:.85rem;margin-top:1.25rem}
.field{display:flex;flex-direction:column;gap:.3rem}
.field label{font-size:.8125rem;font-weight:600;color:var(--fg)}
.field input{
  padding:.6rem .8rem;border:1px solid var(--border);border-radius:7px;
  font-size:.9375rem;font-family:var(--font);background:var(--card);
  outline:none;transition:border-color .15s
}
.field input:focus{border-color:var(--accent)}
.sub-link{text-align:center;margin-top:1.25rem;font-size:.875rem}
.alert{
  background:#fef3c7;color:#92400e;border:1px solid #fbbf24;
  border-radius:7px;padding:.65rem .85rem;font-size:.8125rem;font-weight:500
}

/* Dashboard */
.dashboard h1{margin-bottom:1.25rem}
.dashboard .card h2{margin-top:0;margin-bottom:.65rem;font-size:1.05rem}

.invite-box{
  display:flex;gap:.45rem;align-items:center;margin-top:.45rem
}
.invite-box code{
  flex:1;padding:.5rem .65rem;background:var(--bg);border:1px solid var(--border);
  border-radius:7px;font-family:var(--mono);font-size:.75rem;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap
}
.invited-by-card p{margin:0;color:var(--fg2)}

.tree{display:flex;flex-direction:column;gap:.3rem;margin-top:.85rem}
.tree-node{
  display:flex;align-items:center;gap:.35rem;
  padding:.4rem .65rem;border-radius:7px;
  background:var(--card);border:1px solid var(--border);
  font-size:.8125rem
}
.tree-node.root{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:600}
.tree-node.root .val{color:rgba(255,255,255,.85)}
.tree-node .indent{width:calc(var(--level,0)*1.1rem);flex-shrink:0;display:inline-block}
.tree-node .tag{font-size:.6875rem;font-weight:700;color:var(--fg3);min-width:1.3rem}
.tree-node .name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis}
.tree-node .val{font-weight:600;color:var(--accent);font-family:var(--mono);font-size:.75rem;white-space:nowrap}

.total .big{font-size:1.75rem;font-weight:700;color:var(--accent)}
.total .sub{font-size:.8125rem;margin-top:.15rem}
.token-breakdown{display:flex;flex-direction:column;gap:.35rem;margin-top:.65rem;font-size:.9375rem}
.token-breakdown .row{display:flex;justify-content:space-between;align-items:center;padding:.25rem 0;border-bottom:1px solid var(--border)}
.token-breakdown .row:last-child{border-bottom:none}
.token-breakdown .row.total{font-weight:700;border-top:2px solid var(--fg);padding-top:.5rem;margin-top:.25rem}
.token-breakdown .label{color:var(--fg2)}
.token-breakdown .row.total .label{color:var(--fg)}
.token-breakdown .val{font-family:var(--mono);font-weight:600;color:var(--accent)}

/* Vision slides */
.vision{text-align:center;padding-top:4.5rem}
.vision .counter{
  display:inline-block;margin-bottom:.4rem;
  font-size:.75rem;font-weight:600;color:var(--fg2);
  background:var(--card);border:1px solid var(--border);
  padding:.2rem .65rem;border-radius:999px
}
.vision h1{margin-bottom:1.25rem;font-size:clamp(1.5rem,3.5vw,2.25rem)}
.vision .body{max-width:600px;margin:0 auto;text-align:left}
.vision .body p{font-size:1rem;color:var(--fg2)}
.vision .body ul{list-style:none;margin:.85rem 0}
.vision .body ul li{margin-bottom:.65rem;color:var(--fg2);font-size:.9375rem}
.vision .body ul.arrow li::before{content:"\2192 ";color:var(--accent);font-weight:700}
.vision .body ul.check li::before{content:"\2713 ";color:var(--accent);font-weight:700}
.vision .body p.em{font-style:italic;color:var(--fg);font-weight:500;margin-top:1.25rem}
.vision .nav-btns{display:flex;gap:.75rem;justify-content:center;margin-top:1.75rem;flex-wrap:wrap}
.vision .back{display:inline-block;margin-top:1.25rem;font-size:.8125rem;color:var(--fg2)}

/* FAQ */
.faq details{
  background:var(--card);border:1px solid var(--border);border-radius:8px;
  margin-bottom:.65rem;overflow:hidden
}
.faq summary{
  padding:.85rem 1rem;cursor:pointer;font-weight:600;font-size:.9375rem;
  color:var(--fg);user-select:none;list-style:none;
  display:flex;align-items:center;gap:.5rem
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";color:var(--accent);font-weight:700;font-size:1.1rem;width:1.1rem;text-align:center;flex-shrink:0}
.faq details[open] summary::before{content:"\2212"}
.faq details[open] summary{border-bottom:1px solid var(--border)}
.faq .answer{padding:0 1rem .85rem;font-size:.9375rem;color:var(--fg2)}
.faq .answer p{margin-bottom:.5rem;color:var(--fg2);font-size:.9375rem}
.faq .answer ul{margin-bottom:.5rem}
.faq .answer .btn{margin-top:.5rem}
.faq .formula.small{padding:.85rem;margin:.5rem 0}
.faq .formula.small p{font-size:.8125rem;margin-bottom:.1rem}


.faq ul{list-style:none;margin:.85rem 0}
.faq ul li{margin-bottom:.65rem;color:var(--fg2);font-size:.9375rem}
.faq ul.arrow li::before{content:"\2192 ";color:var(--accent);font-weight:700}
.faq ul.check li::before{content:"\2713 ";color:var(--accent);font-weight:700}
.faq p.em{font-style:italic;color:var(--fg);font-weight:500;margin-top:1.25rem}

/* Mobile */
/* Admin */
.admin .table-wrap{overflow-x:auto;margin-top:1rem}
.admin table{width:100%;border-collapse:collapse;font-size:.875rem}
.admin th,.admin td{text-align:left;padding:.55rem .65rem;border-bottom:1px solid var(--border)}
.admin th{font-weight:600;color:var(--fg);background:var(--card);position:sticky;top:0}
.admin td{color:var(--fg2)}
.admin .muted{color:var(--fg3)}
.admin .badge{display:inline-block;padding:.15rem .5rem;border-radius:999px;font-size:.75rem;font-weight:600}
.admin .badge.active{background:#dcfce7;color:#166534}
.admin .badge.inactive{background:#fef2f2;color:#991b1b}
.admin form{margin:0}
.admin .back{display:inline-block;margin-top:1.5rem;font-size:.8125rem;color:var(--fg2)}
.admin .btn.small{padding:.25rem .65rem;font-size:.75rem}

@media(max-width:480px){
  .lang-select{font-size:.5625rem;margin-left:.3rem;max-width:5.5rem}
  .lang-select option{font-size:.5625rem}
  .slide{padding:4.5rem 1rem 2.5rem}
  .slide-inner{padding:0}
  .btns{flex-direction:column;align-items:stretch}
  .btns .btn{justify-content:center}
  nav .nav-inner{padding:.5rem .85rem}
  nav .nav-links{gap:.55rem}
  nav .nav-links a{font-size:.75rem}
  a.download{display:none}
  .page{padding:4.5rem .85rem 2.5rem}
  .card{padding:1.15rem}
  .tree-node{padding:.35rem .5rem;font-size:.75rem}
}

@media(min-width:481px)and(max-width:768px){
  .slide{padding:5rem 1.5rem 3rem}
  .page{padding:5rem 1.5rem 3rem}
}