:root{
  --paper:#efece4; --card:#f8f6f0; --ink:#141414; --soft:#5f5b52; --faint:#8d887c; --line:#d9d4c7;
  --led:#27d46b; --led-dim:#1a8f49; --red:#e4572e; --blue:#2d6cdf; --yellow:#f2c14e; --green:#3aa876; --violet:#7a5cd6;
  --sans:"Geist",system-ui,-apple-system,sans-serif; --mono:"Geist Mono",ui-monospace,Menlo,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.5 var(--sans);-webkit-font-smoothing:antialiased}
body{background-image:radial-gradient(rgba(20,20,20,.06) 1px,transparent 1px);background-size:18px 18px}
button,input{font:inherit;color:inherit}
a{color:inherit}
.mono{font-family:var(--mono);letter-spacing:.02em}
#app{max-width:560px;margin:0 auto;padding:0 16px calc(120px + env(safe-area-inset-bottom))}
.top{display:flex;justify-content:space-between;align-items:center;padding:calc(16px + env(safe-area-inset-top)) 0 6px}
.mark{display:flex;align-items:center;gap:10px;font:700 14px var(--mono);letter-spacing:.14em;text-decoration:none}
.led{width:10px;height:10px;border-radius:50%;background:#bdb8ab;box-shadow:inset 0 -1px 0 rgba(0,0,0,.2);transition:background .3s,box-shadow .3s}
.led.on{background:var(--led);box-shadow:0 0 0 3px rgba(39,212,107,.18),0 0 12px rgba(39,212,107,.6)}
.slot{font-size:11.5px;color:var(--faint);letter-spacing:.12em}

/* hero */
.hero{padding:44px 0 10px}
.kicker{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--soft);margin:0 0 14px}
.hero h1{font:800 clamp(52px,15vw,78px)/.92 var(--sans);letter-spacing:-.045em;margin:0 0 18px}
.lede{font-size:18px;color:var(--soft);margin:0 0 26px;max-width:30em}
.fine{font:12px var(--mono);color:var(--faint);margin:14px 0 0;letter-spacing:.02em}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;border-radius:14px;padding:15px 22px;min-height:52px;font:700 17px var(--sans);background:var(--ink);color:var(--paper);cursor:pointer;text-decoration:none;transition:transform .1s}
.btn:active{transform:scale(.97)}
.btn.wide{width:100%}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink)}
.btn.led-btn{background:var(--led);color:var(--ink)}
.btn[disabled]{opacity:.35;pointer-events:none}
.link{background:none;border:0;padding:12px 4px;font:600 15px var(--sans);text-decoration:underline;text-underline-offset:3px;cursor:pointer;color:var(--ink)}

/* step headers */
.step{padding:22px 0 8px}
.step .kicker{margin-bottom:8px}
.step h2{font:800 34px/1.02 var(--sans);letter-spacing:-.035em;margin:0 0 8px}
.step p{margin:0;color:var(--soft)}

/* filters and search */
.filters{display:flex;gap:8px;overflow-x:auto;padding:14px 0 4px;margin:0 -16px;padding-inline:16px;scrollbar-width:none}
.filters::-webkit-scrollbar{display:none}
.chip{flex:none;border:1.5px solid var(--line);background:var(--card);border-radius:999px;padding:8px 14px;min-height:40px;font:600 14px var(--sans);cursor:pointer;white-space:nowrap}
.chip.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.search{width:100%;margin:10px 0 4px;border:1.5px solid var(--line);background:var(--card);border-radius:12px;padding:12px 14px;font:500 16px var(--sans);outline:none}
.search:focus{border-color:var(--ink)}

/* cartridge label tiles */
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:12px}
@media (min-width:480px){.grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.cart{position:relative;display:flex;flex-direction:column;justify-content:space-between;text-align:left;min-height:112px;border:1.5px solid var(--line);background:var(--card);border-radius:12px;padding:0;cursor:pointer;overflow:hidden;transition:transform .12s,border-color .12s}
.cart:active{transform:scale(.97)}
.cart .stripe{height:8px;background:var(--c,var(--blue))}
.cart b{display:block;font:700 15px/1.2 var(--sans);letter-spacing:-.01em;padding:10px 12px 0}
.cart .yr{font:500 11.5px var(--mono);color:var(--faint);padding:8px 12px 10px;letter-spacing:.06em}
.cart .tick{position:absolute;bottom:9px;right:9px;font:700 10px var(--mono);letter-spacing:.1em;background:var(--ink);color:var(--led);border-radius:6px;padding:3px 6px;opacity:0;transform:scale(.8);transition:opacity .15s,transform .15s}
.cart[aria-pressed="true"]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.cart[aria-pressed="true"] .tick{opacity:1;transform:scale(1)}
.more{display:block;margin:16px auto 0}

/* bottom tray */
.tray{position:fixed;left:50%;bottom:calc(12px + env(safe-area-inset-bottom));transform:translateX(-50%);width:min(528px,calc(100% - 24px));display:flex;align-items:center;gap:12px;background:var(--ink);color:var(--paper);border-radius:18px;padding:10px 10px 10px 16px;z-index:20;box-shadow:0 14px 30px -12px rgba(0,0,0,.5)}
.tray .count{flex:1;font:600 14px var(--mono);letter-spacing:.04em}
.tray .count small{display:block;font:400 12px var(--mono);color:#a9a495}
.tray .btn{min-height:46px;padding:11px 18px;font-size:16px;background:var(--led);color:var(--ink)}
.tray.bump .count{animation:bump .3s ease}
@keyframes bump{40%{transform:scale(1.06)}}

/* this or that */
.vs{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:18px}
.vs .cart{min-height:190px}
.vs .cart b{font-size:19px;padding-top:14px}
.vsmid{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--ink);color:var(--led);font:700 10px var(--mono);letter-spacing:.04em;box-shadow:0 0 0 3px var(--paper,#efece4);pointer-events:none}
.dots{display:flex;gap:6px;margin-top:10px}.dots i{width:28px;height:4px;border-radius:4px;background:var(--line)}.dots i.on{background:var(--ink)}

/* saving */
.saving{min-height:60vh;display:flex;flex-direction:column;justify-content:center;gap:16px}
.saving .mono{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--soft)}
.bar{height:22px;border:2px solid var(--ink);border-radius:6px;padding:3px;background:var(--card)}
.bar i{display:block;height:100%;width:0;background:repeating-linear-gradient(90deg,var(--ink) 0 14px,transparent 14px 18px);border-radius:2px;transition:width 1.3s steps(12)}
.saved{font:800 64px/1 var(--sans);letter-spacing:-.05em;opacity:0;transform:translateY(6px);transition:opacity .25s,transform .25s}
.saved.show{opacity:1;transform:none}

/* the card */
.savecard{background:var(--ink);color:var(--paper);border-radius:22px;padding:20px 20px 18px;margin-top:20px;position:relative;overflow:hidden}
.savecard::after{content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;border-radius:50%;background:radial-gradient(circle,rgba(39,212,107,.16),transparent 70%)}
.sc-top{display:flex;justify-content:space-between;align-items:center;font:600 12px var(--mono);letter-spacing:.14em;color:#a9a495}
.sc-top .led{margin-right:8px}
.sc-class{margin:22px 0 4px;font:800 40px/1 var(--sans);letter-spacing:-.04em}
.sc-line{margin:0;color:#c9c4b6;font-size:16px}
.sc-list{list-style:none;margin:20px 0 0;padding:0;border-top:1px solid #2c2c2a}
.sc-list li{display:grid;grid-template-columns:34px 1fr auto;gap:8px;align-items:baseline;padding:11px 0;border-bottom:1px solid #2c2c2a}
.sc-list .n{font:700 13px var(--mono);color:var(--led)}
.sc-list b{font:650 17px/1.25 var(--sans)}
.sc-list .y{font:12px var(--mono);color:#8d887c}
.sc-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:16px}
.sc-stats div{background:#1f1f1e;border-radius:12px;padding:10px 12px}
.sc-stats dt{font:600 10.5px var(--mono);letter-spacing:.12em;color:#8d887c;text-transform:uppercase}
.sc-stats dd{margin:4px 0 0;font:700 20px var(--sans);letter-spacing:-.02em}
.sc-now{margin-top:12px;background:#1f1f1e;border-radius:12px;padding:12px}
.sc-now .mono{font-size:10.5px;letter-spacing:.12em;color:#8d887c;text-transform:uppercase}
.sc-now b{display:block;font:650 17px var(--sans);margin:4px 0 8px}
.segs{display:grid;grid-template-columns:repeat(10,1fr);gap:3px}.segs i{height:8px;border-radius:2px;background:#333330}.segs i.on{background:var(--led)}
.sc-foot{margin-top:14px;font:11px var(--mono);letter-spacing:.1em;color:#6f6b61;display:flex;justify-content:space-between}

.actions{display:grid;gap:10px;margin-top:16px}
.actions .row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.said{min-height:22px;font:13px var(--mono);color:var(--soft);margin:8px 0 0;text-align:center}

/* options (continue flow) */
.opts{display:grid;gap:10px;margin-top:18px}
.opt{text-align:left;border:1.5px solid var(--line);background:var(--card);border-radius:14px;padding:16px 18px;cursor:pointer}
.opt b{display:block;font:700 19px var(--sans);letter-spacing:-.02em}
.opt span{color:var(--soft);font-size:14.5px}
.opt:active{transform:scale(.98)}

.section{margin-top:34px}
.section h3{font:800 22px var(--sans);letter-spacing:-.03em;margin:0 0 6px}
.section p{margin:0 0 12px;color:var(--soft)}
.howto{list-style:none;counter-reset:s;margin:0;padding:0;display:grid;gap:10px}
.howto li{counter-increment:s;display:grid;grid-template-columns:44px 1fr;gap:10px;align-items:start;background:var(--card);border:1.5px solid var(--line);border-radius:14px;padding:14px}
.howto li::before{content:"0" counter(s);font:700 13px var(--mono);color:var(--soft);padding-top:3px}
.toast{position:fixed;left:50%;top:calc(14px + env(safe-area-inset-top));transform:translateX(-50%);background:var(--ink);color:var(--paper);font:600 14px var(--mono);padding:10px 14px;border-radius:10px;z-index:40}
/* next save */
.nextup .nlist{display:grid;gap:8px;margin:14px 0 10px}
.nrow{display:flex;align-items:stretch;border:1.5px solid var(--line);background:var(--card);border-radius:12px;overflow:hidden}
.ntitle{flex:1;display:flex;gap:12px;align-items:center;padding:12px 14px;text-decoration:none;color:inherit;min-width:0}
.ntitle b{display:block;font:700 15px/1.25 var(--sans)}
.ntitle small{display:block;color:var(--faint);font-size:13px;line-height:1.35;margin-top:2px}
.nsc{flex:none;width:40px;height:40px;border-radius:10px;background:var(--ink);color:var(--led);display:grid;place-items:center;font-weight:700;font-size:15px}
.nfind{flex:none;display:grid;place-items:center;padding:0 14px;border-left:1.5px solid var(--line);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;color:inherit}