/* eCandle 1 — product detail page. Light editorial, same palette as landing V2. */
:root{
--paper:oklch(0.985 0.006 95);--paper-2:oklch(0.968 0.008 95);--paper-3:oklch(0.938 0.010 95);
--ink:oklch(0.255 0.022 160);--ink-dim:oklch(0.44 0.020 162);--ink-faint:oklch(0.60 0.016 165);
--green:oklch(0.50 0.105 162);--green-deep:oklch(0.40 0.095 165);--amber:oklch(0.74 0.145 66);
--accent:var(--green);--accent-2:var(--amber);
--night:oklch(0.225 0.024 165);--night-2:oklch(0.275 0.026 165);
--line:color-mix(in oklch,var(--ink) 14%,transparent);--line-soft:color-mix(in oklch,var(--ink) 8%,transparent);
--font-display:"Instrument Serif",Georgia,serif;--font-body:"IBM Plex Sans",system-ui,sans-serif;--font-mono:"IBM Plex Mono",ui-monospace,monospace;
--maxw:1240px;--gutter:clamp(20px,5vw,76px);--radius:6px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px;overflow-x:clip}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:17px;line-height:1.62;-webkit-font-smoothing:antialiased}
::selection{background:color-mix(in oklch,var(--accent) 22%,transparent)}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--green-deep)}
img{max-width:100%}
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter);position:relative;z-index:1}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:400;line-height:1.04;letter-spacing:-0.01em;margin:0;text-wrap:balance}
.display{font-size:clamp(42px,6.4vw,84px);line-height:1.03}
.section-title{font-size:clamp(31px,4.2vw,56px)}
.lede{font-size:clamp(17px,1.4vw,21px);color:var(--ink-dim);line-height:1.55;max-width:62ch;text-wrap:pretty}
p{text-wrap:pretty}
.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);display:inline-flex;align-items:center;gap:10px;margin:0;font-weight:500}
.eyebrow::before{content:"";width:18px;height:1px;background:currentColor}
.mono-label{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint)}
.italic{font-style:italic;color:var(--accent)}
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:15px;padding:13px 22px;border-radius:100px;border:1px solid transparent;cursor:pointer;transition:.22s;white-space:nowrap}
.btn-primary{background:var(--accent);color:var(--paper)}
.btn-primary:hover{background:var(--green-deep);color:var(--paper);transform:translateY(-2px);box-shadow:0 12px 26px -12px color-mix(in oklch,var(--accent) 80%,transparent)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-disabled{background:transparent;color:var(--ink-faint);border-color:var(--line-soft);cursor:default}
.btn svg{width:16px;height:16px}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:60;border-bottom:1px solid transparent;transition:.3s}
.nav.scrolled{background:color-mix(in oklch,var(--paper) 84%,transparent);backdrop-filter:blur(14px) saturate(1.2);border-bottom-color:var(--line-soft)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.nav-inner>.btn{flex-shrink:0;padding:10px 18px;font-size:13.5px}
.brand{display:inline-flex;align-items:center;gap:11px;font-family:var(--font-display);font-size:23px;color:var(--ink);flex-shrink:0;white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand-arkreen,.brand-self{display:inline-flex;align-items:center;gap:11px;color:inherit}
.brand-arkreen:hover,.brand-self:hover{color:var(--ink)}
.brand img{height:21px;width:auto;display:block}
.brand-div{width:1px;height:18px;background:var(--line)}
.brand em{font-style:italic;color:var(--green)}
.nav-links{display:flex;align-items:center;gap:clamp(12px,1.4vw,22px)}
.nav-links a{font-size:13.5px;color:var(--ink-dim);white-space:nowrap}
.nav-links a:hover{color:var(--ink)}
@media (max-width:1180px){.nav-links{display:none}}

section{position:relative;padding-block:clamp(70px,10vh,132px)}
.section-head{max-width:74ch}
.section-head .section-title{margin-top:16px}
.section-head .lede{margin-top:20px}
.divider{height:1px;background:var(--line-soft)}
.night{background:var(--night);color:oklch(0.93 0.012 120)}
.night .section-title,.night h3,.night h4{color:oklch(0.96 0.010 120)}
.night .lede,.night p{color:oklch(0.80 0.014 140)}
.night .eyebrow{color:oklch(0.80 0.10 150)}
.night .mono-label{color:oklch(0.68 0.020 150)}
.night a{color:oklch(0.85 0.10 150)}

/* hero */
.hero{padding-top:clamp(120px,17vh,176px);padding-bottom:clamp(30px,5vh,60px)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4.4vw,64px);align-items:center}
.hero h1{margin-top:22px;padding-bottom:.12em}
.hero .lede{margin-top:26px;max-width:52ch}
.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
.spec-strip{display:flex;flex-wrap:wrap;gap:9px;margin-top:34px}
.spec-chip{font-family:var(--font-mono);font-size:12.5px;color:var(--ink-dim);border:1px solid var(--line);border-radius:100px;padding:7px 15px;background:var(--paper)}
.spec-chip b{color:var(--accent);font-weight:600}
.hero-visual{position:relative;display:grid;gap:22px}
.hero-shot{position:relative;display:grid;place-items:center;aspect-ratio:1/1}
.hero-shot::before{content:"";position:absolute;inset:8%;border-radius:50%;background:radial-gradient(46% 42% at 50% 48%,color-mix(in oklch,var(--accent-2) 24%,transparent),transparent 70%)}
.hero-shot img{position:relative;width:98%;object-fit:contain;filter:drop-shadow(0 26px 44px rgba(40,50,40,.2))}
.flowline{display:flex;align-items:center;justify-content:center;gap:0;flex-wrap:wrap;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase}
.flowline .step{border:1px solid var(--line);border-radius:100px;padding:7px 14px;background:var(--paper-2);color:var(--ink-dim);white-space:nowrap}
.flowline .step.hot{border-color:color-mix(in oklch,var(--accent-2) 60%,transparent);color:color-mix(in oklch,var(--amber) 70%,var(--ink));background:color-mix(in oklch,var(--accent-2) 10%,var(--paper))}
.flowline .step.on{border-color:color-mix(in oklch,var(--accent) 46%,transparent);color:var(--accent)}
.flowline .arw{width:22px;height:1px;background:var(--line);flex:0 0 auto;position:relative}
.flowline .arw::after{content:"";position:absolute;right:0;top:-2.5px;border-left:5px solid var(--line);border-top:3px solid transparent;border-bottom:3px solid transparent}
@media (max-width:920px){.hero-grid{grid-template-columns:1fr}.hero-visual{order:-1;max-width:430px}}

/* two-col text + figure */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4.4vw,72px);align-items:center;margin-top:56px}
.split.wide-fig{grid-template-columns:.85fr 1.15fr}
@media (max-width:920px){.split,.split.wide-fig{grid-template-columns:1fr}}
.figure{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2);padding:18px;overflow:hidden}
.figure img{display:block;width:100%;border-radius:3px}
.figcap{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);margin-top:14px}
.body-copy p{color:var(--ink-dim);font-size:17px;margin:20px 0 0}
.body-copy p:first-child{margin-top:0}

/* numbered legend */
.legend{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-top:34px;list-style:none;padding:0}
.legend li{display:flex;gap:12px;align-items:flex-start;border-top:1px solid var(--line-soft);padding-top:12px;font-size:15px}
.legend .n{font-family:var(--font-mono);font-size:11px;color:var(--accent);border:1px solid color-mix(in oklch,var(--accent) 40%,transparent);border-radius:50%;width:22px;height:22px;display:grid;place-items:center;flex:0 0 auto;margin-top:2px}

/* metric row */
.metrics{display:grid;grid-template-columns:repeat(6,1fr);gap:0;margin-top:52px;border:1px solid var(--line-soft)}
.metrics div{background:var(--paper);padding:24px 20px;border-left:1px solid var(--line-soft)}
.metrics div:nth-child(6n+1){border-left:0}
.metrics .v{font-family:var(--font-display);font-size:clamp(26px,2.4vw,38px);line-height:1.05;color:var(--ink);white-space:nowrap}
.metrics .k{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin-top:10px}
@media (max-width:1020px){.metrics{grid-template-columns:repeat(3,1fr)}.metrics div:nth-child(6n+1){border-left:1px solid var(--line-soft)}.metrics div:nth-child(3n+1){border-left:0}.metrics div:nth-child(n+4){border-top:1px solid var(--line-soft)}}
@media (max-width:560px){.metrics{grid-template-columns:repeat(2,1fr)}.metrics div:nth-child(3n+1){border-left:1px solid var(--line-soft)}.metrics div:nth-child(2n+1){border-left:0}.metrics div:nth-child(n+3){border-top:1px solid var(--line-soft)}}

/* card grids */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:52px}
.card{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2);padding:28px 26px}
.card h3{font-size:24px;margin-bottom:0}
.card p{color:var(--ink-dim);font-size:15.5px;margin:12px 0 0}
.card .ic{width:30px;height:30px;color:var(--accent);margin-bottom:16px}
.card .ic svg{width:100%;height:100%}
.night .card{background:var(--night-2);border-color:oklch(0.36 0.02 165)}

/* stack diagram */
.stack{display:grid;gap:10px;margin-top:52px}
.stack-row{border:1px solid oklch(0.38 0.02 165);border-radius:var(--radius);padding:20px 24px;background:var(--night-2);display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:baseline}
.stack-row .lv{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:oklch(0.66 0.03 150)}
.stack-row .t{font-family:var(--font-display);font-size:25px;color:oklch(0.96 0.01 120)}
.stack-row .s{font-family:var(--font-mono);font-size:12.5px;color:oklch(0.74 0.02 145);margin-top:8px;line-height:1.7}
.stack-row.app{border-color:oklch(0.55 0.10 150)}
.stack-row.hw{background:oklch(0.31 0.02 165)}
.stack-row.hw .t{color:oklch(0.88 0.06 96)}
.stack-arrow{height:16px;display:grid;place-items:center}
.stack-arrow::after{content:"";width:1px;height:16px;background:oklch(0.44 0.02 165)}
@media (max-width:640px){.stack-row{grid-template-columns:1fr}}

/* status pill */
.pill{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;padding:5px 11px;border-radius:100px;border:1px solid}
.pill.live{color:var(--green-deep);border-color:color-mix(in oklch,var(--green) 45%,transparent);background:color-mix(in oklch,var(--green) 10%,transparent)}
.pill.dev{color:color-mix(in oklch,var(--amber) 62%,var(--ink));border-color:color-mix(in oklch,var(--amber) 55%,transparent);background:color-mix(in oklch,var(--amber) 12%,transparent)}
.pill.plan{color:var(--ink-faint);border-color:var(--line)}
.pill .dot{width:6px;height:6px;border-radius:50%;background:currentColor}

/* paygo two-panel */
.panels{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:52px}
@media (max-width:920px){.panels{grid-template-columns:1fr}}
.panel{border:1px solid var(--line);border-radius:var(--radius);padding:32px 30px;background:var(--paper-2)}
.panel h3{font-size:27px;margin-top:18px}
.panel p{color:var(--ink-dim);font-size:15.5px;margin:14px 0 0}
.vflow{display:grid;gap:0;margin-top:24px;font-family:var(--font-mono);font-size:13px}
.vflow .s{border:1px solid var(--line);border-radius:4px;padding:11px 14px;background:var(--paper);color:var(--ink-dim)}
.vflow .s.mark{border-color:color-mix(in oklch,var(--accent) 45%,transparent);color:var(--accent)}
.vflow .s.out{border-color:color-mix(in oklch,var(--accent-2) 60%,transparent);color:color-mix(in oklch,var(--amber) 66%,var(--ink))}
.vflow .a{height:14px;margin-left:20px;border-left:1px dashed var(--line)}
.ticks{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:9px}
.ticks li{display:flex;gap:11px;font-size:15px;color:var(--ink-dim);align-items:flex-start}
.ticks li::before{content:"";width:7px;height:7px;border-radius:50%;border:1px solid var(--ink-faint);flex:0 0 auto;margin-top:8px}
.ticks.done li::before{background:var(--accent);border-color:var(--accent)}
.note{margin-top:44px;border-left:2px solid var(--accent);padding:4px 0 4px 20px;font-size:17px;color:var(--ink);max-width:70ch}
.night .note{border-color:oklch(0.72 0.10 150);color:oklch(0.90 0.012 130)}

/* payment neutrality */
.payflow{display:grid;gap:0;margin-top:52px;justify-items:center;text-align:center}
.payflow .rails{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.payflow .rail{font-family:var(--font-mono);font-size:12.5px;border:1px solid var(--line);border-radius:100px;padding:9px 18px;background:var(--paper-2);color:var(--ink-dim)}
.payflow .a{width:1px;height:26px;background:var(--line)}
.payflow .box{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;border:1px solid color-mix(in oklch,var(--accent) 45%,transparent);color:var(--accent);border-radius:4px;padding:12px 24px;background:color-mix(in oklch,var(--accent) 7%,var(--paper))}
.payflow .dev{font-family:var(--font-display);font-size:30px}

/* json */
.code{border:1px solid oklch(0.38 0.02 165);border-radius:var(--radius);background:oklch(0.19 0.02 165);padding:24px 26px;overflow-x:auto;font-family:var(--font-mono);font-size:13px;line-height:1.85;color:oklch(0.86 0.02 140);margin:0}
.code .k{color:oklch(0.78 0.09 150)}
.code .s{color:oklch(0.86 0.09 96)}
.code .n{color:oklch(0.84 0.06 60)}

/* boundary table */
.boundary{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:52px}
@media (max-width:920px){.boundary{grid-template-columns:1fr}}
.bcol{border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px}
.bcol.open{background:color-mix(in oklch,var(--green) 5%,var(--paper));border-color:color-mix(in oklch,var(--green) 30%,transparent)}
.bcol.closed{background:var(--paper-3)}
.bcol h3{font-size:25px;margin-top:16px}
.bcol ul{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:10px}
.bcol li{font-size:15.5px;color:var(--ink-dim);display:flex;gap:11px}
.bcol li b{color:var(--ink);font-weight:600}
.bcol.open li::before{content:"↗";color:var(--accent)}
.bcol.closed li::before{content:"◆";color:var(--ink-faint);font-size:11px;line-height:1.9}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;margin-top:52px;background:var(--line-soft);border:1px solid var(--line-soft)}
.steps div{background:var(--paper);padding:26px 22px}
.steps .n{font-family:var(--font-mono);font-size:11px;color:var(--accent);letter-spacing:.14em}
.steps h4{font-size:23px;margin-top:12px}
.steps p{font-size:14.5px;color:var(--ink-dim);margin:10px 0 0}
@media (max-width:920px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}

/* status columns */
.status{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:52px}
@media (max-width:920px){.status{grid-template-columns:1fr}}
.scol{border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;background:var(--paper-2)}
.scol ul{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:10px}
.scol li{font-size:15px;color:var(--ink-dim);padding-left:16px;position:relative}
.scol li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:1px;background:var(--ink-faint)}

/* specs accordion */
.specs{margin-top:48px;border-top:1px solid var(--line)}
.specs details{border-bottom:1px solid var(--line)}
.specs summary{cursor:pointer;list-style:none;padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:20px;font-family:var(--font-display);font-size:27px}
.specs summary::-webkit-details-marker{display:none}
.specs summary .plus{font-family:var(--font-mono);font-size:20px;color:var(--accent);transition:.2s}
.specs details[open] summary .plus{transform:rotate(45deg)}
.specs dl{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:0 40px;margin:0 0 26px}
.specs .row{display:flex;justify-content:space-between;gap:18px;padding:11px 0;border-top:1px dotted var(--line-soft);font-size:15px}
.specs dt{color:var(--ink-dim)}
.specs dd{margin:0;font-family:var(--font-mono);font-size:13.5px;color:var(--ink);text-align:right}

/* cta */
.cta{text-align:center}
.cta .display{font-size:clamp(34px,4.6vw,62px)}
.cta .lede{margin:22px auto 0;text-align:center}
.cta .hero-actions{justify-content:center}

/* footer */
footer{border-top:1px solid var(--line);padding:52px 0 40px;font-size:14.5px;color:var(--ink-faint)}
.foot{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center}
.foot-links{display:flex;gap:22px;flex-wrap:wrap}
.foot-links a{color:var(--ink-dim)}
.foot-links a:hover{color:var(--accent)}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}