:root{--brand:#0f766e;--brand-d:#115e59;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#fff;--soft:#f8fafc;--err:#b91c1c;--ok:#047857;--r:14px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
img{max-width:100%}
a{color:var(--brand-d)}
h1{font-size:clamp(1.9rem,4.5vw,3rem);line-height:1.15;margin:.2em 0 .4em;letter-spacing:-.02em}
h2{font-size:clamp(1.4rem,3vw,1.9rem);line-height:1.25;margin:0 0 .6em;letter-spacing:-.01em}
h3{font-size:1.1rem;margin:0 0 .3em}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.section{margin-top:56px}
.muted{color:var(--muted)}.small{font-size:.875rem}
.lead{font-size:1.15rem;color:#334155;max-width:720px}
/* nav */
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;flex-wrap:wrap}
.nav nav{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.nav nav a{text-decoration:none;color:var(--ink);font-weight:500}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);font-weight:700;font-size:1.1rem}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--brand);color:#fff!important;border:0;border-radius:10px;padding:10px 18px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer}
.btn:hover{background:var(--brand-d)}.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-sm{padding:6px 12px}.btn-lg{padding:14px 22px;font-size:1.05rem}
.btn-ghost{background:transparent;color:var(--brand-d)!important;border:1px solid var(--line)}.btn-ghost:hover{background:var(--soft)}
.btn-light{background:#fff;color:var(--brand-d)!important}.btn-light:hover{background:#f0fdfa}
.btn-danger{background:var(--err)}.btn-reward{background:#b45309}
/* forms */
label{display:flex;flex-direction:column;gap:4px;font-weight:500;font-size:.95rem}
input,select{font:inherit;padding:10px 12px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;width:100%;min-width:0}
input[type=color]{padding:2px;height:44px}input[type=range]{padding:0}
input[type=checkbox]{width:auto}
label.check{flex-direction:row;align-items:flex-start;gap:8px;font-weight:400}
.stack{display:flex;flex-direction:column;gap:14px}
.row{display:flex;gap:8px;align-items:center}.row input{flex:1}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.hp{position:absolute;left:-9999px}
.builder-form p:empty{display:none}
.flash{padding:12px 14px;border-radius:10px;margin:12px 0}
.flash.error{background:#fef2f2;color:var(--err)}.flash.ok{background:#ecfdf5;color:var(--ok)}.flash.info{background:#f0f9ff;color:#075985}
/* hero + builder */
.hero{background:linear-gradient(180deg,#f0fdfa,#fff);padding:40px 0 24px}
.builder{display:grid;grid-template-columns:1fr 340px;gap:32px;align-items:start;margin-top:24px}
.builder-form{display:flex;flex-direction:column;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:0 10px 30px -15px rgba(15,23,42,.2)}
.builder-preview{display:flex;justify-content:center}
.phone{width:300px;max-width:100%;aspect-ratio:9/18.5;background:#0f172a;border-radius:44px;padding:12px;box-shadow:0 30px 60px -20px rgba(15,23,42,.45);position:relative}
.phone-notch{position:absolute;top:18px;left:50%;transform:translateX(-50%);width:90px;height:22px;background:#0f172a;border-radius:12px;z-index:2}
.phone-screen{background:#f1f5f9;border-radius:34px;height:100%;overflow:hidden}
.screen-pad{padding:48px 14px 14px;display:flex;flex-direction:column;align-items:center;gap:10px}
.screen-hint{margin:0;font-size:.8rem;color:var(--muted)}
.qr-fake{width:110px;height:110px;background:repeating-conic-gradient(#0f172a 0 25%,#fff 0 50%) 0 0/22px 22px;border:8px solid #fff;border-radius:8px}
/* stamp card */
.card{text-align:left;--c:#0f766e;--fg:#fff;background:var(--c);color:var(--fg);border-radius:18px;padding:16px;width:100%;max-width:380px;box-shadow:0 12px 24px -12px rgba(0,0,0,.35);transition:background .2s}
.card-top{display:flex;gap:12px;align-items:center}
.card-logo{width:44px;height:44px;border-radius:12px;background:#fff;color:#0f172a;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.2rem;overflow:hidden;flex:none}
.card-logo img{width:100%;height:100%;object-fit:contain}
.card-name{font-weight:700;font-size:1.05rem;line-height:1.2}.card-title{opacity:.85;font-size:.85rem}
.stamps{display:grid;grid-template-columns:repeat(var(--n),1fr);gap:8px;margin:16px 0 12px}
.stamp{aspect-ratio:1;border-radius:50%;border:2px dashed currentColor;opacity:.55}
.stamp.on{opacity:1;border-style:solid;background:currentColor;box-shadow:inset 0 0 0 4px var(--c)}
.card-reward{font-size:.85rem;font-weight:600}.card-holder{font-size:.8rem;opacity:.85;margin-top:6px}
/* content */
.steps{list-style:none;counter-reset:s;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.steps li{counter-increment:s;background:var(--soft);border-radius:var(--r);padding:20px;display:flex;flex-direction:column;gap:6px}
.steps li::before{content:counter(s);width:32px;height:32px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.tile{display:flex;flex-direction:column;gap:4px;padding:16px;border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--ink)}
.tile:hover{border-color:var(--brand)}
.dot{width:14px;height:14px;border-radius:50%}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.panel{background:var(--soft);border-radius:var(--r);padding:20px}
.panel.highlight{background:#f0fdfa;border:1px solid #99f6e4}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.checks{padding:0;list-style:none}.checks li{padding-left:28px;position:relative;margin:6px 0}
.checks li::before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:800}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{font-weight:600;cursor:pointer}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:8px 14px;border:1px solid var(--line);border-radius:999px;text-decoration:none;color:var(--ink);font-size:.9rem}
.crumbs{font-size:.85rem;color:var(--muted);padding-top:12px}.crumbs a{color:var(--muted)}
.cta{background:var(--brand);color:#fff;text-align:center;padding:56px 0;margin-top:64px}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:24px 0}
.plan{border:1px solid var(--line);border-radius:var(--r);padding:24px;display:flex;flex-direction:column}
.plan.featured{border:2px solid var(--brand)}.plan .btn{margin-top:auto}
.price strong{font-size:2rem}
.prose{max-width:760px}
.site-footer{border-top:1px solid var(--line);margin-top:64px;padding:32px 0;background:var(--soft)}
.footer-grid{display:grid;grid-template-columns:2fr 2fr 1fr;gap:24px;margin-bottom:16px}
.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:4px 0}
.site-footer h3{font-size:.95rem}
/* auth + app */
.auth{max-width:440px;padding-top:32px}
.app{padding-top:16px;padding-bottom:48px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.stat{background:var(--soft);border-radius:var(--r);padding:16px;display:flex;flex-direction:column}
.stat strong{font-size:1.8rem}.stat span{color:var(--muted);font-size:.9rem}
.qr{background:#fff;border-radius:8px}
.table-wrap{overflow-x:auto;margin-top:16px}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);white-space:nowrap}
.scanner{display:flex;flex-direction:column;align-items:center;gap:8px;margin-bottom:16px}
.scanner video{width:100%;max-width:420px;border-radius:var(--r);background:#000;display:none}
.scanner.on video{display:block}
.results{list-style:none;padding:0}.results li{border-bottom:1px solid var(--line)}.results a{display:block;padding:12px 4px;text-decoration:none;color:var(--ink)}
/* customer */
.customer{max-width:440px;margin:0 auto;padding:24px 16px;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}
.customer form{width:100%;text-align:left}
.customer .btn{background:var(--c)}
.customer-qr{width:220px;background:#fff;padding:8px;border-radius:12px}
.customer-qr svg,.poster-qr svg{display:block;width:100%;height:auto}
.code{font-size:1.1rem;margin:0}.card-status{font-weight:600}
.powered{font-size:.8rem;color:var(--muted);margin-top:24px}
.poster{max-width:700px;margin:0 auto;text-align:center;padding:48px 16px}
.poster h1{color:var(--c)}.poster-reward{font-size:1.5rem;font-weight:700}
.poster-qr{width:min(360px,80vw);margin:24px auto;border:12px solid var(--c);border-radius:24px;padding:12px;background:#fff}
@media print{.no-print{display:none}.poster{padding:0}}
@media (max-width:860px){
  .builder,.two-col,.grid3,.steps,.footer-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .phone{width:260px}
}