/* Flashstub — flashstub.com
   Aesthetic: thermal-receipt editorial. Warm paper, black ink, one amber accent.
   Fonts are self-hosted; the site loads nothing from third parties. */

@font-face { font-family: "Fraunces"; src: url("fonts/fraunces-normal-300-700.woff2") format("woff2"); font-weight: 300 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Fraunces"; src: url("fonts/fraunces-italic-300-700.woff2") format("woff2"); font-weight: 300 700; font-style: italic; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("fonts/instrument-sans-normal-400-700.woff2") format("woff2"); font-weight: 400 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("fonts/instrument-sans-italic-400-700.woff2") format("woff2"); font-weight: 400 700; font-style: italic; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("fonts/plex-mono-normal-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("fonts/plex-mono-normal-500.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }

:root {
  --paper: #f3ede1;
  --paper-deep: #e9e1d0;
  --card: #fbf9f3;
  --ink: #17140f;
  --ink-soft: #5c564c;
  --ink-faint: #9a9284;
  --rule: #d8cfbd;
  --amber: #f28c1a;
  --amber-deep: #c96a00;
  --amber-wash: #fdebd3;
  --ok: #1f8a4c;
  --display: "Fraunces", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --body: "Instrument Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "Plex Mono", "SF Mono", Menlo, Consolas, monospace;
  --measure: 62ch;
  --radius: 18px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--body); font-size: 17px; line-height: 1.55;
  -webkit-font-smoothing: antialiased; position: relative; min-height: 100vh;
}
/* paper grain */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.35 0 0 0 0 0.3 0 0 0 0 0.22 0 0 0 .06 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
body > * { position: relative; z-index: 1; }

a { color: inherit; text-decoration-color: var(--amber); text-underline-offset: .18em; text-decoration-thickness: 1.5px; }
a:hover { color: var(--amber-deep); }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: .5rem .9rem; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

h1, h2, h3 { font-family: var(--display); font-weight: 500; letter-spacing: -.015em; line-height: 1.05; margin: 0 0 .5em; font-variation-settings: "opsz" 96; }
h1 { font-size: clamp(2.6rem, 6.2vw, 5rem); }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); }
h3 { font-size: 1.35rem; font-variation-settings: "opsz" 24; }
h1 em, h2 em { font-style: italic; color: var(--amber-deep); font-weight: 400; }
p { margin: 0 0 1em; max-width: var(--measure); }
.lede { font-size: 1.25rem; color: var(--ink-soft); }
.eyebrow { font-family: var(--mono); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 1.2rem; }
.eyebrow::before { content: "— "; color: var(--amber); }

.wrap { width: min(1120px, calc(100% - 2.5rem)); margin-inline: auto; }
.narrow { width: min(760px, calc(100% - 2.5rem)); margin-inline: auto; }

/* header */
.top { display: flex; align-items: center; justify-content: space-between; gap: .8rem 1.2rem; flex-wrap: wrap; padding: 1.4rem 0; }
.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; font-family: var(--display); font-size: 1.35rem; font-weight: 600; letter-spacing: -.01em; }
.brand img { width: 40px; height: 40px; border-radius: 10px; box-shadow: 0 1px 0 rgba(0,0,0,.08), 0 6px 18px -8px rgba(60,40,0,.35); }
.nav { display: flex; gap: 1.6rem; font-family: var(--mono); font-size: .86rem; letter-spacing: .04em; }
@media (max-width: 480px) { .brand { font-size: 1.2rem; gap: .5rem; } .brand img { width: 34px; height: 34px; } .nav { gap: .9rem; font-size: .78rem; letter-spacing: .02em; } }
.nav a { text-decoration: none; padding: .3rem 0; border-bottom: 1.5px solid transparent; }
.nav a[aria-current="page"], .nav a:hover { border-bottom-color: var(--amber); color: var(--ink); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: .6rem; padding: .95rem 1.35rem; border-radius: 14px; font-weight: 600; text-decoration: none; font-size: 1rem; line-height: 1; transition: transform .15s ease, box-shadow .15s ease; }
.btn:active { transform: translateY(1px); }
.btn-ink { background: var(--ink); color: var(--paper); box-shadow: 0 10px 26px -14px rgba(0,0,0,.6); }
.btn-ink:hover { color: #fff; box-shadow: 0 14px 30px -14px rgba(0,0,0,.7); }
.btn-ink small { display: block; font-weight: 400; font-size: .72rem; opacity: .75; letter-spacing: .02em; }
.btn-ink .apple { width: 22px; height: 22px; fill: currentColor; }
.btn-line { border: 1.5px solid var(--ink); color: var(--ink); background: transparent; }
.btn-line:hover { background: var(--ink); color: var(--paper); }

/* hero */
.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 3rem; align-items: center; padding: 3.5rem 0 4.5rem; }
.hero .actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 1.8rem; align-items: center; }
.hero .note { font-family: var(--mono); font-size: .8rem; color: var(--ink-faint); margin-top: 1.1rem; }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; gap: 2.4rem; padding-top: 2rem; } }

/* the receipt */
.receipt {
  --w: 360px; position: relative; width: min(var(--w), 100%); margin-inline: auto;
  background: var(--card); color: var(--ink); padding: 1.6rem 1.5rem 1.2rem; font-family: var(--mono); font-size: .92rem;
  box-shadow: 0 1px 0 rgba(0,0,0,.05), 0 30px 50px -30px rgba(60,40,0,.45), 0 12px 24px -18px rgba(0,0,0,.25);
  transform: rotate(-1.2deg);
}
.receipt::after { /* torn bottom edge */
  content: ""; position: absolute; left: 0; right: 0; bottom: -11px; height: 12px;
  background: linear-gradient(135deg, var(--card) 50%, transparent 50%) 0 0 / 16px 12px repeat-x,
              linear-gradient(225deg, var(--card) 50%, transparent 50%) 8px 0 / 16px 12px repeat-x;
}
.receipt .head { text-align: center; padding-bottom: .9rem; border-bottom: 1.5px dashed var(--rule); margin-bottom: .9rem; }
.receipt .head b { display: block; font-family: var(--display); font-weight: 600; font-size: 1.35rem; letter-spacing: -.01em; }
.receipt .head span { color: var(--ink-faint); font-size: .78rem; letter-spacing: .12em; }
.receipt .row { display: flex; justify-content: space-between; gap: .8rem; padding: .32rem 0; align-items: baseline; }
.receipt .row .k { color: var(--ink-soft); flex: 0 0 auto; }
.receipt .row .dots { flex: 1 1 auto; border-bottom: 2px dotted var(--rule); transform: translateY(-.35em); }
.receipt .row .v { font-weight: 500; text-align: right; }
.receipt .row.total { border-top: 1.5px dashed var(--rule); margin-top: .6rem; padding-top: .8rem; font-size: 1.15rem; }
.receipt .row.total .v { color: var(--ok); font-weight: 500; }
.receipt .tag { display: inline-block; background: var(--amber-wash); color: var(--amber-deep); padding: .12rem .5rem; border-radius: 6px; font-size: .8rem; }
.receipt .foot { text-align: center; color: var(--ink-faint); font-size: .74rem; letter-spacing: .1em; margin-top: 1rem; }
/* printing animation */
.receipt [data-i] { opacity: 0; transform: translateY(-6px); animation: print .5s ease-out forwards; animation-delay: calc(var(--i, 0) * 130ms + 200ms); }
@keyframes print { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .receipt [data-i] { animation: none; opacity: 1; transform: none; } html { scroll-behavior: auto; } }

/* sections */
section { padding: 3.6rem 0; }
.rule { border: 0; border-top: 1.5px dashed var(--rule); margin: 0; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; counter-reset: step; }
.step { background: var(--card); border-radius: var(--radius); padding: 1.6rem 1.5rem 1.4rem; position: relative; box-shadow: 0 1px 0 rgba(0,0,0,.04), 0 18px 30px -26px rgba(60,40,0,.5); }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--mono); color: var(--amber-deep); font-size: .85rem; letter-spacing: .12em; display: block; margin-bottom: .8rem; }
.step h3 { margin-bottom: .4rem; }
.step p { margin: 0; color: var(--ink-soft); font-size: 1rem; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }

.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 3rem; }
.feature { padding: 1.4rem 0; border-top: 1.5px dashed var(--rule); }
.feature h3 { margin-bottom: .3rem; }
.feature p { margin: 0; color: var(--ink-soft); font-size: 1rem; }
@media (max-width: 760px) { .features { grid-template-columns: 1fr; } }

.promise { background: var(--ink); color: var(--paper); border-radius: 26px; padding: 3rem clamp(1.4rem, 4vw, 3.4rem); display: grid; grid-template-columns: 1.1fr .9fr; gap: 2.5rem; align-items: start; }
.promise h2 { color: #fff; }
.promise h2 em { color: var(--amber); }
.promise p { color: #cfc7b8; }
.promise .receipt { --w: 100%; transform: none; background: #fbf9f3; color: var(--ink); font-size: .86rem; }
.promise .receipt .row .v.no { color: var(--ok); }
.promise a { color: #fff; }
@media (max-width: 860px) { .promise { grid-template-columns: 1fr; } }

/* article pages */
.article { padding: 2.5rem 0 4rem; }
.article h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
.article h2 { font-size: 1.6rem; margin-top: 2.4rem; }
.article ul { padding-left: 1.2rem; max-width: var(--measure); }
.article li { margin: .35rem 0; }
.article .meta { font-family: var(--mono); font-size: .8rem; color: var(--ink-faint); letter-spacing: .06em; }
.summary { background: var(--card); border-radius: var(--radius); padding: 1.4rem 1.5rem; margin: 1.6rem 0 2.2rem; box-shadow: 0 1px 0 rgba(0,0,0,.04), 0 18px 30px -26px rgba(60,40,0,.5); }
.summary .row { display: flex; justify-content: space-between; gap: 1rem; padding: .4rem 0; border-bottom: 1.5px dashed var(--rule); font-family: var(--mono); font-size: .9rem; }
.summary .row:last-child { border-bottom: 0; }
.summary .row .v { font-weight: 500; text-align: right; }
.summary .row .v.no { color: var(--ok); }
.summary .row .v.opt { color: var(--amber-deep); }
details { border-top: 1.5px dashed var(--rule); padding: 1rem 0; max-width: 760px; }
details:last-of-type { border-bottom: 1.5px dashed var(--rule); }
summary { cursor: pointer; font-family: var(--display); font-size: 1.25rem; font-weight: 500; 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(--amber-deep); font-size: 1.3rem; transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p, details ul { color: var(--ink-soft); margin-top: .8rem; }
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin: 1.6rem 0 2.4rem; }
.contact .card { background: var(--card); border-radius: var(--radius); padding: 1.5rem; box-shadow: 0 1px 0 rgba(0,0,0,.04), 0 18px 30px -26px rgba(60,40,0,.5); }
.contact .card h3 { margin-bottom: .4rem; }
.contact .card p { font-size: 1rem; color: var(--ink-soft); margin-bottom: 1rem; }
.contact code, .article code { font-family: var(--mono); font-size: .9em; background: var(--paper-deep); padding: .1em .4em; border-radius: 6px; }
@media (max-width: 700px) { .contact { grid-template-columns: 1fr; } }

/* footer */
footer { padding: 3rem 0 3.5rem; border-top: 1.5px dashed var(--rule); margin-top: 2rem; font-size: .95rem; color: var(--ink-soft); }
footer .cols { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.2rem 2rem; align-items: flex-start; }
footer .links { display: flex; flex-wrap: wrap; gap: 1.4rem; font-family: var(--mono); font-size: .84rem; }
footer .links a { text-decoration: none; border-bottom: 1.5px solid transparent; }
footer .links a:hover { border-bottom-color: var(--amber); }
footer .fine { font-size: .82rem; color: var(--ink-faint); margin-top: .8rem; max-width: 60ch; }