/* Nazarban Skin Scan — marketing site. One file, no framework. */
:root{
  --bg:#f6f3ec; --paper:#fffdf8; --ink:#17171a; --soft:#3d3a34; --muted:#6a655c;
  --line:#e4ddcf; --accent:#0b6b50; --accent-2:#0e8a67; --tint:#e6f1ec; --gold:#b98a2e;
  --wa:#1f9d55; --radius:18px; --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Manrope,system-ui,-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased;line-height:1.55}
img,svg{max-width:100%}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.serif{font-family:Fraunces,Georgia,serif}

/* nav */
.nav{position:sticky;top:0;z-index:20;background:rgba(246,243,236,.86);backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid transparent;transition:border-color .2s}
.nav.scrolled{border-bottom-color:var(--line)}
.nav .wrap{display:flex;align-items:center;gap:24px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:Fraunces,serif;font-weight:600;font-size:19px;white-space:nowrap}
.logo svg{flex:none}
.nav .links{display:flex;gap:22px;margin-left:auto;align-items:center}
.nav .links a{text-decoration:none;font-weight:600;font-size:14.5px;color:var(--soft)}
.nav .links a:hover,.nav .links a[aria-current]{color:var(--ink)}
.menu-btn{display:none;margin-left:auto;background:none;border:0;padding:10px;cursor:pointer}
@media (max-width:860px){
  .nav .links{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);padding:8px 20px 16px}
  .nav .links a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav .links a.btn{margin-top:12px;border:0;text-align:center}
  .nav.open .links{display:flex}
  .menu-btn{display:block}
}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:0 22px;border-radius:14px;
  font:700 15.5px Manrope,sans-serif;text-decoration:none;border:0;cursor:pointer;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-2)}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn.small{min-height:40px;padding:0 16px;font-size:14px;border-radius:11px}
.nav .links a.btn.primary{color:#fff}

/* sections */
section{padding:84px 0}
.kicker{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:800}
h1,h2,h3{font-family:Fraunces,Georgia,serif;font-weight:500;letter-spacing:-.01em;margin:0}
h1{font-size:clamp(38px,6vw,64px);line-height:1.04}
h2{font-size:clamp(30px,4vw,44px);line-height:1.1}
h3{font-size:22px;line-height:1.25;font-weight:600}
.lede{font-size:clamp(17px,2vw,19.5px);color:var(--soft);max-width:620px}
.center{text-align:center}.center .lede{margin-left:auto;margin-right:auto}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto}
.sec-head h2{margin:10px 0 14px}
.band{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.dark{background:#11241d;color:#eef3ef}
.dark .lede,.dark p{color:#c9d6cf}
.dark .kicker{color:#7fd3b1}

/* hero */
.hero{padding:64px 0 72px}
.hero .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{margin:14px 0 18px}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 14px}
.fine{font-size:13.5px;color:var(--muted)}
.fine b{color:var(--soft)}
@media (max-width:900px){.hero .grid{grid-template-columns:1fr;gap:40px}.hero{padding-top:36px}}

/* phone mockup */
.stage{position:relative;display:flex;justify-content:center;padding:10px 0 30px}
.phone{width:300px;border-radius:40px;background:#111;padding:12px;box-shadow:0 40px 80px rgba(17,36,29,.25),0 8px 20px rgba(0,0,0,.12)}
.screen{border-radius:30px;background:var(--bg);overflow:hidden;min-height:560px}
.scr-head{display:flex;justify-content:space-between;align-items:baseline;padding:18px 16px 10px}
.scr-head b{font-family:Fraunces,serif;font-size:15px}
.scr-head span{font-size:9px;letter-spacing:.14em;color:var(--accent);font-weight:800}
.scr-face{margin:0 12px;border-radius:16px;background:linear-gradient(160deg,#d9c3b3,#e9d8cb);height:210px;position:relative;overflow:hidden}
.scr-face svg{position:absolute;inset:0;width:100%;height:100%}
.scr-body{padding:12px 14px}
.scr-h{font-family:Fraunces,serif;font-size:15px;line-height:1.3;margin:4px 2px 10px}
.scr-h em{font-style:normal;color:var(--accent);font-weight:600}
.chip{display:flex;justify-content:space-between;align-items:center;background:#fff;border:1px solid var(--line);border-radius:11px;padding:9px 11px;margin-bottom:7px;font-size:11.5px;font-weight:700}
.chip i{font-style:normal;color:var(--accent);font-weight:700}
.tx{background:#fff;border:1px solid var(--line);border-radius:11px;padding:10px 11px;margin-bottom:7px}
.tx div{display:flex;justify-content:space-between;font-size:11.5px;font-weight:800}
.tx div span{color:var(--accent)}
.tx small{display:block;color:var(--muted);font-size:10px;margin-top:2px}
.wa-btn{background:var(--wa);color:#fff;text-align:center;border-radius:11px;padding:10px;font-size:11.5px;font-weight:800;margin-top:6px}
.float{position:absolute;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 18px 40px rgba(17,36,29,.16);padding:13px 14px;width:236px;font-size:12.5px}
.float .t{font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:800;margin-bottom:4px}
.float b{display:block;font-size:14px;margin-bottom:3px}
.float .row{color:var(--muted);line-height:1.45}
.float .go{display:inline-block;margin-top:8px;background:var(--wa);color:#fff;border-radius:9px;padding:6px 10px;font-weight:800;font-size:11.5px}
.f1{right:-8px;top:40px}
.f2{left:-10px;bottom:36px;width:200px}
@media (max-width:1100px){.f1{right:0}.f2{left:0}}
@media (max-width:520px){.float{position:static;width:100%;margin-top:14px}.stage{flex-direction:column;align-items:center}.phone{width:280px}}

/* strip */
.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper)}
.strip div{padding:26px 22px;border-right:1px solid var(--line)}
.strip div:last-child{border-right:0}
.strip b{display:block;font-family:Fraunces,serif;font-size:30px;font-weight:600;line-height:1.1}
.strip span{font-size:14px;color:var(--muted)}
@media (max-width:760px){.strip{grid-template-columns:1fr 1fr}.strip div:nth-child(2){border-right:0}.strip div:nth-child(-n+2){border-bottom:1px solid var(--line)}}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:s}
.step{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.step:before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:38px;height:38px;border-radius:50%;
  background:var(--tint);color:var(--accent);font-weight:800;margin-bottom:16px}
.step h3{margin-bottom:8px}
.step p{margin:0;color:var(--soft)}
@media (max-width:860px){.steps{grid-template-columns:1fr}}

/* features */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{padding:24px;border-radius:var(--radius);background:var(--paper);border:1px solid var(--line)}
.feature .ic{width:40px;height:40px;border-radius:12px;background:var(--tint);display:grid;place-items:center;color:var(--accent);margin-bottom:14px}
.feature h3{font-size:19px;margin-bottom:6px}
.feature p{margin:0;color:var(--soft);font-size:15px}
.soon{display:inline-block;font:700 10.5px Manrope,sans-serif;letter-spacing:.08em;text-transform:uppercase;background:#f3ead6;color:#8a6414;border-radius:999px;padding:3px 8px;margin-left:6px;vertical-align:middle}
@media (max-width:900px){.features{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.features{grid-template-columns:1fr}}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
@media (max-width:860px){.split{grid-template-columns:1fr;gap:32px}}
.checks{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:12px}
.checks li{position:relative;padding-left:34px;font-size:16px}
.checks li:before{content:"";position:absolute;left:0;top:0;width:22px;height:22px;margin-top:2px;border-radius:50%;
  background:var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M5 12l5 5L19 7'/%3E%3C/svg%3E") center/13px no-repeat}
.dark .checks li:before{background-color:#2fae84}

/* math card */
.math{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:28px}
.math .line{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px dashed var(--line);font-size:16px}
.math .line:last-of-type{border-bottom:0}
.math .line b{font-size:18px}
.math .total{margin-top:10px;background:var(--tint);border-radius:14px;padding:16px;font-weight:700;color:var(--accent);font-size:16.5px}
.math small{display:block;color:var(--muted);margin-top:12px;font-size:12.5px}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.plan{background:var(--paper);border:1.5px solid var(--line);border-radius:22px;padding:28px;display:flex;flex-direction:column}
.plan.hi{border:2px solid var(--accent);box-shadow:0 24px 50px rgba(11,107,80,.12)}
.plan .tag{align-self:flex-start;background:var(--accent);color:#fff;font-size:11px;letter-spacing:.08em;font-weight:800;border-radius:999px;padding:5px 10px;margin-bottom:14px}
.plan h3{font-size:24px}
.plan .price{font-size:40px;font-weight:800;margin:14px 0 2px;letter-spacing:-.02em}
.plan .price small{font-size:15px;color:var(--muted);font-weight:600;letter-spacing:0}
.plan .sub{color:var(--muted);font-size:14px;min-height:42px}
.plan ul{list-style:none;padding:0;margin:18px 0 24px;display:grid;gap:9px;font-size:15px}
.plan ul li{padding-left:24px;position:relative}
.plan ul li:before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:800}
.plan .btn{margin-top:auto}
@media (max-width:960px){.plans{grid-template-columns:1fr}}

/* faq */
.faq{max-width:780px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line);padding:18px 4px}
.faq summary{cursor:pointer;font-weight:700;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-size:24px;line-height:1;color:var(--accent);flex:none}
.faq details[open] summary:after{content:"–"}
.faq p{margin:10px 0 0;color:var(--soft)}

/* cta */
.cta-box{background:var(--accent);color:#fff;border-radius:28px;padding:56px 40px;text-align:center}
.cta-box h2{color:#fff;margin-bottom:12px}
.cta-box p{color:#d7efe5;max-width:560px;margin:0 auto 26px;font-size:18px}
.cta-box .btn.primary{background:#fff;color:var(--accent)}
.cta-box .btn.ghost{color:#fff;border-color:#fff}
.cta-box .ctas{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* prose (legal) */
.prose{max-width:760px;margin:0 auto}
.prose h1{font-size:42px;margin-bottom:8px}
.prose h2{font-size:24px;margin:34px 0 10px}
.prose p,.prose li{color:var(--soft);font-size:16px}
.prose .updated{color:var(--muted);font-size:14px}

/* flow diagram (how it works) */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.flow .node{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:18px;position:relative}
.flow .node b{display:block;font-size:15.5px;margin-bottom:4px}
.flow .node span{font-size:13.5px;color:var(--muted)}
.flow .node:not(:last-child):after{content:"→";position:absolute;right:-12px;top:50%;transform:translate(50%,-50%);color:var(--accent);font-weight:800}
@media (max-width:900px){.flow{grid-template-columns:1fr}.flow .node:not(:last-child):after{content:"↓";right:50%;top:auto;bottom:-18px;transform:translateX(50%)}}

/* footer */
footer.site{padding:56px 0 40px;border-top:1px solid var(--line);margin-top:40px;font-size:14px;color:var(--muted)}
footer.site .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
footer.site h4{color:var(--ink);margin:0 0 10px;font-size:14px}
footer.site a{display:block;text-decoration:none;margin:6px 0;color:var(--soft)}
footer.site a:hover{color:var(--ink)}
footer.site .legal{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
@media (max-width:760px){footer.site .cols{grid-template-columns:1fr 1fr}}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* checkout (/start) */
.checkout{padding:48px 0 84px}
.co-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.co-pitch h1{font-size:clamp(34px,4.6vw,50px);margin:12px 0 16px}
.co-pitch .checks{margin:20px 0 26px}
.co-plans{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.co-plan{background:var(--paper);border:1.5px solid var(--line);border-radius:var(--radius);padding:20px}
.co-plan.main{border:2px solid var(--accent)}
.co-plan h3{margin:8px 0 2px}
.co-plan .price{font-size:24px;font-weight:800;margin:4px 0}
.co-plan .price small{font-size:13px;color:var(--muted);font-weight:600}
.co-plan p{margin:6px 0 0;font-size:14px;color:var(--soft)}
.co-plan .tag{display:inline-block;background:var(--accent);color:#fff;border-radius:999px;font-size:11px;font-weight:800;padding:4px 10px;letter-spacing:.06em;text-transform:uppercase}
.co-form{position:sticky;top:88px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:0 18px 50px -30px rgba(17,36,29,.35);margin-bottom:14px}
.card h3{margin-bottom:14px}
.card label{display:block;margin-bottom:12px}
.card label span{display:block;font-size:12.5px;font-weight:800;margin-bottom:6px}
.card input{width:100%;min-height:50px;border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;font:500 16px Manrope,sans-serif;background:#fff}
.card input:focus{outline:none;border-color:var(--accent)}
.card .pay h4{margin:18px 0 8px;font-size:14px}
#sendOnly{width:100%;min-height:52px;border:0;border-radius:14px;background:var(--accent);color:#fff;font:700 16px Manrope,sans-serif;cursor:pointer;margin-top:6px}
.err{background:#fff4f2;border:1px solid #f1c4bb;color:#8a2c1c;border-radius:12px;padding:10px 12px;font-size:14px;margin-bottom:12px}
.ok{background:#eef7f2;border:1px solid #b9dcc9;border-radius:22px;padding:24px;font-size:16px;line-height:1.6;margin-bottom:14px}
.hidden{display:none!important}
@media (max-width:900px){.co-grid{grid-template-columns:1fr;gap:32px}.co-form{position:static}.checkout{padding-top:28px}}
@media (max-width:520px){.co-plans{grid-template-columns:1fr}}

.dark .feature p{color:#c9d6cf}
.founding{margin-top:14px;padding:12px 14px;border-radius:12px;background:var(--tint);border:1px solid #b9dcc9;font-size:14px;line-height:1.5}
.founding b{display:block;color:var(--accent);font-size:12px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:2px}