/* CoinStable.us — mobile first, desktop runs near full width (same rule as SlopCup.com) */

:root{
  --paper:#f7f7f2;
  --paper-2:#eef0e9;
  --card:#ffffff;
  --ink:#0c1a17;
  --ink-soft:#4f5f59;
  --brand:#0d1b18;
  --brand-2:#123f34;
  --accent:#0f6b52;
  --accent-2:#1f8a6a;
  --accent-soft:#e4f1ec;
  --bolt:#c9a227;
  --line:#e2e5dd;
  --wrap:clamp(.9rem,1.6vw,1.6rem);
  --maxw:1840px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(12,26,23,.05),0 8px 24px -12px rgba(12,26,23,.18);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation-duration:.001ms!important;transition-duration:.001ms!important}}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font:16px/1.6 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg{max-width:100%;height:auto;display:block}
a{color:inherit}
p a,li a,td a{color:color-mix(in srgb,var(--accent) 78%,var(--ink));text-underline-offset:2px;text-decoration-thickness:1px}
p a:hover,li a:hover,td a:hover{color:var(--brand-2)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--wrap)}
.skip{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:.6rem .9rem;border-radius:0 0 8px 0;z-index:100}
.skip:focus{left:0}

/* ---------- header ---------- */
.hd{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:saturate(1.2) blur(10px);
  border-bottom:1px solid var(--line);
}
.hd-inner{display:flex;align-items:center;gap:.9rem;min-height:60px}
.brand{display:flex;align-items:center;gap:.55rem;text-decoration:none;font-weight:700;letter-spacing:-.01em;font-size:1.06rem;flex:1 1 auto;min-width:0}
.brand img{width:28px;height:28px;flex:none}
.brand span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand small{font-weight:500;color:var(--ink-soft);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;display:block;line-height:1}

.hd-nav{display:none;align-items:center;gap:.15rem;list-style:none;margin:0;padding:0}
.hd-nav a{display:inline-block;padding:.45rem .7rem;border-radius:999px;text-decoration:none;font-size:.92rem;color:var(--ink-soft)}
.hd-nav a:hover{background:var(--accent-soft);color:var(--brand-2)}
.hd-cta{display:none;margin-left:.4rem}

.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:4px;
  width:40px;height:40px;padding:0 8px;border:1px solid var(--line);border-radius:10px;
  background:var(--card);cursor:pointer
}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .18s ease,opacity .18s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.drawer{
  display:none;border-top:1px solid var(--line);background:var(--paper);
}
.drawer[data-open="true"]{display:block}
.drawer ul{list-style:none;margin:0;padding:.4rem var(--wrap) .9rem;display:grid;gap:.1rem}
.drawer a{display:block;padding:.6rem .2rem;text-decoration:none;font-size:1rem;border-bottom:1px solid var(--line)}
.drawer .btn{margin:.6rem .2rem .2rem}

@media (min-width:900px){
  .hd-inner{min-height:68px}
  .hd-nav{display:flex}
  .hd-cta{display:inline-flex}
  .nav-toggle{display:none}
  .drawer{display:none!important}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.7rem 1.1rem;border-radius:999px;border:1px solid transparent;
  font:inherit;font-size:.95rem;font-weight:600;text-decoration:none;cursor:pointer;
  transition:transform .12s ease,background .12s ease,border-color .12s ease
}
.btn:active{transform:translateY(1px)}
.btn--solid{background:var(--accent);color:#fff}
.btn--solid:hover{background:var(--brand-2)}
.btn--ghost{background:transparent;border-color:color-mix(in srgb,var(--ink) 22%,transparent);color:var(--ink)}
.btn--ghost:hover{border-color:var(--accent);color:var(--brand-2);background:var(--accent-soft)}
.btn--light{background:#fff;color:var(--brand)}
.btn--light:hover{background:var(--accent-soft)}

/* ---------- hero ---------- */
.hero{padding:clamp(1.6rem,4vw,3.4rem) 0 clamp(1.2rem,2.6vw,2.2rem)}
.hero-grid{display:grid;gap:clamp(1.2rem,3vw,2.4rem)}
.eyebrow{display:inline-flex;align-items:center;gap:.4rem;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:700;margin:0 0 .8rem}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
h1{font-size:clamp(1.9rem,4.6vw,3.4rem);line-height:1.06;letter-spacing:-.025em;margin:0 0 .7rem;font-weight:800}
.lede{font-size:clamp(1rem,1.5vw,1.18rem);color:var(--ink-soft);max-width:64ch;margin:0 0 1.3rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.6rem}
.badge{
  display:inline-flex;align-items:center;gap:.4rem;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  padding:.3rem .6rem;border-radius:999px;background:var(--accent-soft);color:var(--brand-2)
}
.badge--warn{background:#fdf3d8;color:#6b5410}

/* reserve card in the hero */
.rcard{
  background:var(--card);color:var(--ink);border:1px solid var(--line);border-top:3px solid var(--accent);
  border-radius:var(--radius);padding:clamp(.95rem,1.6vw,1.25rem);
  box-shadow:var(--shadow);position:relative;overflow:hidden
}
.rcard h2{font-size:.74rem;letter-spacing:.13em;text-transform:uppercase;color:var(--accent);margin:0 0 .7rem;font-weight:700}
.rcard dl{display:grid;grid-template-columns:1fr auto;gap:.42rem .9rem;margin:0;align-items:baseline}
.rcard dt{color:var(--ink-soft);font-size:.92rem}
.rcard dd{margin:0;font-family:var(--mono);font-size:1rem;font-weight:600;text-align:right;color:var(--brand-2)}
.rcard .note{position:relative;margin:.85rem 0 0;font-size:.72rem;color:var(--ink-soft);line-height:1.45}

/* stats strip */
.stats{border-block:1px solid color-mix(in srgb,var(--brand) 32%,#fff);background:color-mix(in srgb,var(--brand) 50%,#fff);color:var(--ink)}
.stats ul{list-style:none;margin:0;padding:.9rem 0;display:grid;grid-template-columns:repeat(2,1fr);gap:.8rem}
.stats li{text-align:center}
.stats b{display:block;font-family:var(--mono);font-size:clamp(1.05rem,2vw,1.35rem);letter-spacing:-.02em;color:var(--ink)}
.stats span{font-size:.78rem;color:#243029}
@media (min-width:720px){.stats ul{grid-template-columns:repeat(4,1fr)}}

/* ---------- sections ---------- */
section{padding-block:clamp(1.8rem,4vw,3.2rem)}
.sec-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:.4rem .9rem;margin:0 0 1.2rem}
.sec-head h2{font-size:clamp(1.35rem,2.8vw,2rem);letter-spacing:-.02em;margin:0;line-height:1.15}
.sec-head p{margin:0;color:var(--ink-soft);max-width:78ch;text-wrap:pretty;flex:1 1 auto;min-width:0}
/* desktop: the sub-line sits under its heading and runs as one line when it fits */
@media (min-width:1024px){.sec-head{flex-direction:column;align-items:flex-start;gap:.35rem}.sec-head p{max-width:none}}

.cards{display:grid;gap:1rem;grid-template-columns:1fr}
@media (min-width:640px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1040px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.15rem 1.2rem;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:.45rem
}
.card .ico{width:34px;height:34px;border-radius:9px;background:var(--accent-soft);display:grid;place-items:center;color:var(--brand-2);margin-bottom:.2rem}
.card h3{margin:.1rem 0 0;font-size:1.05rem;letter-spacing:-.01em}
.card p{margin:0;color:var(--ink-soft);font-size:.95rem}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:1rem;counter-reset:step}
@media (min-width:720px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1100px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem 1.15rem;box-shadow:var(--shadow)}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);font-family:var(--mono);font-size:.8rem;color:var(--accent);font-weight:700;letter-spacing:.08em}
.step h3{margin:.35rem 0 .3rem;font-size:1rem}
.step p{margin:0;color:var(--ink-soft);font-size:.92rem}

/* split band */
.band{background:var(--brand);color:#e9f0ed}
.band .sec-head h2{color:#fff}
.band .sec-head p{color:#b9cec7}
.band .cards .card{background:#12261f;border-color:#1d3a31;color:#e9f0ed;box-shadow:none}
.band .cards .card p{color:#b9cec7}
.band .card .ico{background:#1d3a31;color:#7fd3b6}
.band a{color:#8fe0c2}

/* table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--card)}
table{border-collapse:collapse;width:100%;min-width:520px;font-size:.94rem}
caption{caption-side:top;text-align:left;padding:.9rem 1rem;color:var(--ink-soft);font-size:.85rem}
th,td{text-align:left;padding:.75rem 1rem;border-bottom:1px solid var(--line)}
th{font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);font-weight:700;background:var(--paper-2)}
tbody tr:last-child td{border-bottom:0}
td.num{font-family:var(--mono);text-align:right;white-space:nowrap}
tfoot td{font-weight:700;background:var(--paper-2)}

/* code */
.snippet{background:var(--brand);color:#dff0e9;border-radius:var(--radius);padding:1rem;overflow-x:auto;font-family:var(--mono);font-size:.86rem;line-height:1.65}
.snippet .c{color:#8fb5a8}

/* faq */
.faq{display:grid;gap:.6rem}
details{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:.85rem 1rem;box-shadow:var(--shadow)}
details+details{margin-top:0}
summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-family:var(--mono);color:var(--accent);font-weight:700;font-size:1.1rem}
details[open] summary::after{content:"–"}
details p{margin:.6rem 0 0;color:var(--ink-soft);font-size:.95rem}

/* cta band */
.cta{background:var(--accent-soft);border-block:1px solid var(--line)}
.cta .wrap{display:grid;gap:1rem;align-items:center}
@media (min-width:820px){.cta .wrap{grid-template-columns:1.5fr auto}}
.cta h2{margin:0 0 .35rem;font-size:clamp(1.3rem,2.6vw,1.8rem);letter-spacing:-.02em}
.cta p{margin:0;color:var(--ink-soft);max-width:70ch}

/* footer */
.ft{background:var(--brand);color:#b9cec7;margin-top:0;padding-block:clamp(1.6rem,3vw,2.4rem) 1.2rem}
.ft-grid{display:grid;gap:1.4rem;grid-template-columns:1fr}
@media (min-width:720px){.ft-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
.ft h3{color:#fff;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;margin:.2rem 0 .6rem}
.ft ul{list-style:none;margin:0;padding:0;display:grid;gap:.35rem}
.ft a{color:#cfe0da;text-decoration:none;font-size:.92rem}
.ft a:hover{color:#8fe0c2}
.ft-brand{display:flex;align-items:center;gap:.5rem;font-weight:700;color:#fff;font-size:1.02rem;margin-bottom:.5rem}
.ft-brand img{width:24px;height:24px}
.ft p{margin:.35rem 0 0;font-size:.85rem;line-height:1.6;color:#9fb8b0}
.ft .legal{border-top:1px solid #1d3a31;margin-top:1.4rem;padding-top:1rem;font-size:.78rem;color:#8fa8a0}
.ft .legal p{margin:0;max-width:95ch}

/* prose pages */
.prose{max-width:80ch}
.prose h1{font-size:clamp(1.6rem,3.4vw,2.3rem)}
.prose h2{font-size:1.2rem;margin:2rem 0 .5rem;letter-spacing:-.01em}
.prose p,.prose li{color:var(--ink-soft)}
.prose ul{padding-left:1.1rem}
.prose .stamp{font-family:var(--mono);font-size:.8rem;color:var(--ink-soft)}

/* small print */
.fine{font-size:.78rem;color:var(--ink-soft);line-height:1.6}
.opt{color:var(--ink-soft);font-weight:400;font-size:.85em;letter-spacing:.02em}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.notfound{min-height:52vh;display:grid;place-items:center;text-align:center;padding-block:3rem}

/* ---------- hero side panel ---------- */
.hero-art{display:block}
@media (min-width:980px){
  .hero-grid{grid-template-columns:minmax(0,1.3fr) minmax(0,.8fr);align-items:center}
  .hero-art{max-width:440px;justify-self:end;width:100%}
}
.hero-art .rcard{display:flex;flex-direction:column;justify-content:center}
.rcard dl{grid-template-columns:1fr auto}

/* ---------- use-case cards with media ---------- */
.use-cases .card{padding:0;overflow:hidden;gap:0}
.use-cases .card img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block}
.use-cases .card h3{padding:1rem 1.1rem 0}
.use-cases .card p{padding:.35rem 1.1rem 1.15rem}

/* ---------- developer split ---------- */
.dev-grid{display:grid;gap:1.2rem}
@media (min-width:900px){.dev-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);align-items:start}}
code{font-family:var(--mono);font-size:.88em;background:var(--paper-2);padding:.1em .35em;border-radius:5px}