@font-face { font-family: "Inter Tight"; src: url("/fonts/inter-tight-latin.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
/* Demo hands: InkPiper pipeline output from test sheets (OFL derivatives, see /fonts/OFL-demo-hands.txt). */
@font-face { font-family: "Demo Hand 1"; src: url("/fonts/demo-hand-1.woff2") format("woff2"); font-display: swap; }
@font-face { font-family: "Demo Hand 2"; src: url("/fonts/demo-hand-2.woff2") format("woff2"); font-display: swap; }
@font-face { font-family: "Demo Hand 3"; src: url("/fonts/demo-hand-3.woff2") format("woff2"); font-display: swap; }
@font-face { font-family: "Demo Hand 4"; src: url("/fonts/demo-hand-4.woff2") format("woff2"); font-display: swap; }

:root {
  --ink: #17191d;
  --muted: #5b5f66;
  --paper: #f7f4ec;
  --sheet: #fffdf8;
  --accent: #1f3fbf;      /* fountain-pen blue: the one accent */
  --accent-dark: #162f91;
  --guide: #a9cfe8;       /* the template's baseline blue */
  --line: #e2ddd1;
  --display: "Inter Tight", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --text: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --hand: "Demo Hand 1", "Bradley Hand", "Segoe Print", cursive;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.0625rem/1.65 var(--text); }
.wrap { width: min(100% - 2.5rem, 72rem); margin-inline: auto; }
.narrow { width: min(100% - 2.5rem, 42rem); margin-inline: auto; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: #fff; padding: .6rem 1rem; z-index: 10; }
.skip:focus { left: 0; }
a { color: var(--accent); text-underline-offset: .18em; }
a:hover { color: var(--accent-dark); }
a:focus-visible, .btn:focus-visible, summary:focus-visible, [contenteditable]:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.hand { font-family: var(--hand); font-weight: 400; letter-spacing: 0; }
.h1f { font-family: "Demo Hand 1", cursive; }
.h2f { font-family: "Demo Hand 2", cursive; }
.h3f { font-family: "Demo Hand 3", cursive; }
.h4f { font-family: "Demo Hand 4", cursive; }

/* header */
.top { border-bottom: 1px solid var(--line); background: var(--paper); }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 0; flex-wrap: wrap; }
.brand { font: 600 1.3rem/1 var(--display); letter-spacing: -.03em; color: var(--ink); text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; margin-left: 1.4rem; font-size: .95rem; }
nav a:hover { color: var(--ink); text-decoration: underline; }
nav a:first-child { margin-left: 0; }

h1, h2, h3 { font-family: var(--display); color: var(--ink); }
h1 { font-weight: 600; font-size: clamp(2.2rem, 6vw, 3.6rem); line-height: 1.05; letter-spacing: -.04em; margin: 0 0 1.1rem; text-wrap: balance; }
h2 { font-weight: 600; font-size: clamp(1.45rem, 3vw, 1.9rem); line-height: 1.15; letter-spacing: -.03em; margin: 0 0 1rem; }
h3 { font-weight: 600; font-size: 1.1rem; letter-spacing: -.015em; margin: 1.5rem 0 .25rem; }
p { margin: 0 0 1rem; }
.lede { font-size: 1.2rem; line-height: 1.55; color: #2a2d33; max-width: 34rem; margin: 0; }
.small { font-size: .88rem; color: var(--muted); margin: 0; }
.sub { color: var(--muted); max-width: 40rem; }
.eyebrow { font: 500 .8rem/1 var(--display); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin: 0 0 1.2rem; }

/* hero: the headline is set in a demo hand, on notebook rules */
.hero {
  padding: 3.4rem 0 3rem;
  background:
    linear-gradient(to right, transparent 0 3.2rem, #e9b9b5 3.2rem calc(3.2rem + 1px), transparent calc(3.2rem + 1px)),
    repeating-linear-gradient(to bottom, transparent 0 2.45rem, var(--guide) 2.45rem calc(2.45rem + 1px));
  background-color: var(--sheet);
  border-bottom: 1px solid var(--line);
}
.h1-hand { font-family: "Demo Hand 1", cursive; font-weight: 400; font-size: clamp(3.4rem, 10.5vw, 8.6rem); line-height: .98; letter-spacing: -.01em; margin: 0 0 2rem; max-width: 14ch; }
.hero-row { display: grid; gap: 1.4rem; align-items: end; }
@media (max-width: 55.99rem) { .hero { background: repeating-linear-gradient(to bottom, transparent 0 2.45rem, var(--guide) 2.45rem calc(2.45rem + 1px)); background-color: var(--sheet); } }
@media (min-width: 56rem) { .hero-row { grid-template-columns: 1.1fr .9fr; gap: 3rem; } .hero { padding: 4.6rem 0 3.8rem; } }

.actions { display: flex; flex-wrap: wrap; gap: .8rem 1.4rem; align-items: center; margin: 0 0 .7rem; }
.btn { display: inline-block; background: var(--ink); color: #fff; text-decoration: none; font: 600 1rem/1 var(--display); letter-spacing: -.01em; padding: 1rem 1.4rem; border-radius: 999px; }
.btn:hover { background: var(--accent); color: #fff; }
.link { font-weight: 500; }

/* type tester (no JS: contenteditable + radio pills via :has) */
.tester { padding: 2.6rem 0 2.8rem; background: var(--ink); color: #f4f1ea; }
.tester-head { display: flex; flex-wrap: wrap; align-items: center; gap: .8rem 1.2rem; margin-bottom: 1.4rem; }
.tester .label { font: 500 .8rem/1 var(--display); letter-spacing: .08em; text-transform: uppercase; color: #b9b5ab; margin: 0 auto 0 0; }
.pills { border: 0; margin: 0; padding: 0; display: flex; gap: .3rem; }
.pills input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.pills label { font: 500 .88rem/1 var(--display); padding: .55rem .85rem; border: 1px solid #45484f; border-radius: 999px; cursor: pointer; color: #d7d3ca; }
.pills input:checked + label { background: #f4f1ea; color: var(--ink); border-color: #f4f1ea; }
.pills input:focus-visible + label { outline: 3px solid var(--guide); outline-offset: 2px; }
.tester-text { font-size: clamp(2.4rem, 6.4vw, 5.2rem); line-height: 1.12; min-height: 2.4em; outline: none; caret-color: var(--guide); padding: .2rem 0 .6rem; border-bottom: 1px solid #45484f; overflow-wrap: anywhere; }
.tester:has(#h2:checked) .tester-text { font-family: "Demo Hand 2", cursive; }
.tester:has(#h3:checked) .tester-text { font-family: "Demo Hand 3", cursive; }
.tester:has(#h4:checked) .tester-text { font-family: "Demo Hand 4", cursive; }
.tester:has(#s1:checked) .tester-text { font-size: clamp(1.6rem, 3.4vw, 2.6rem); }
.tester:has(#s3:checked) .tester-text { font-size: clamp(3.2rem, 9vw, 7.6rem); }
.note { font-size: .86rem; color: #a8a49a; margin: 1rem 0 0; max-width: 46rem; }
.note a { color: #d7d3ca; }

/* sections */
.sec { padding: 3.6rem 0 0; }
.pair { display: grid; gap: 1.2rem; align-items: center; }
.pair figure, .use { margin: 0; }
.pair-sheet img { display: block; width: 100%; height: auto; border-radius: 6px; box-shadow: 0 1px 2px rgba(0,0,0,.08), 0 12px 30px -12px rgba(0,0,0,.25); }
.pair-arrow { font: 400 2.4rem/1 var(--display); color: var(--accent); text-align: center; transform: rotate(90deg); }
.card { background: var(--sheet); border: 1px solid var(--line); border-radius: 6px; padding: 1.8rem 2rem; font-size: clamp(1.7rem, 3vw, 2.3rem); line-height: 1.32; box-shadow: 0 12px 30px -16px rgba(0,0,0,.2); }
.sign { display: inline-block; margin-top: .4rem; }
figcaption { font-size: .86rem; color: var(--muted); margin-top: .7rem; }
@media (min-width: 56rem) { .pair { grid-template-columns: 1fr auto 1fr; gap: 2rem; } .pair-arrow { transform: none; } }

.uses { display: grid; gap: 1.6rem; }
@media (min-width: 48rem) { .uses { grid-template-columns: repeat(3, 1fr); } }
.paper { background: var(--sheet); border: 1px solid var(--line); border-radius: 4px; padding: 1.3rem 1.4rem 1.5rem; font-size: 1.65rem; line-height: 1.6rem; min-height: 15rem; box-shadow: 0 10px 24px -16px rgba(0,0,0,.25); }
.ruled { line-height: 2.2rem; padding-top: .9rem; background-image: repeating-linear-gradient(to bottom, transparent 0 calc(2.2rem - 1px), var(--guide) calc(2.2rem - 1px) 2.2rem); background-position: 0 calc(.9rem + .35rem); }
.ruled .u-title { margin-bottom: 0; line-height: 2.2rem; }
.recipe { border-top: 6px solid #d8a3a0; line-height: 2rem; }
.tag { display: grid; place-content: center; text-align: center; font-size: 2rem; line-height: 1.2; border-radius: 4px 4px 40px 4px; }
.u-title { display: block; font-size: 1.9rem; margin-bottom: .5rem; color: var(--accent); }
.u-small { display: block; font-size: 1.3rem; color: var(--muted); margin-top: .5rem; }
.use figcaption strong { color: var(--ink); }

.glyphs { display: grid; grid-template-columns: repeat(auto-fill, minmax(4.2rem, 1fr)); }
.glyphs span { margin: 0 -1px -1px 0; border-top: 1px solid var(--guide); border-left: 1px solid var(--guide); background-color: var(--sheet); display: grid; place-items: center; aspect-ratio: 1; font-size: 2.3rem; border-right: 1px solid var(--guide); border-bottom: 1px solid var(--guide); background: linear-gradient(to bottom, transparent 70%, #d6e9f5 70% calc(70% + 1px), transparent calc(70% + 1px)); }

.steps3 { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.6rem; }
@media (min-width: 52rem) { .steps3 { grid-template-columns: repeat(3, 1fr); gap: 2.2rem; } }
.steps3 li { border-top: 1px solid var(--ink); padding-top: 1rem; }
.steps3 strong { display: block; font-family: var(--display); font-size: 1.15rem; letter-spacing: -.015em; margin-bottom: .3rem; }
.num { display: block; font-size: 3.4rem; line-height: 1; color: var(--accent); margin-bottom: .4rem; }

.offer { display: grid; gap: 1.6rem; background: var(--sheet); border: 1px solid var(--line); border-radius: 10px; padding: 2rem; }
@media (min-width: 52rem) { .offer { grid-template-columns: 1.3fr .7fr; padding: 2.6rem 3rem; align-items: center; } }
.ticks { list-style: none; padding: 0; margin: 0; }
.ticks li { padding-left: 1.6rem; position: relative; margin: 0 0 .55rem; }
.ticks li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.price { margin: 0 0 1rem; }
.price span { font: 600 3.6rem/1 var(--display); letter-spacing: -.05em; }

.plain { padding-left: 1.2rem; margin: 0 0 1rem; }
.plain li { margin: 0 0 .6rem; padding-left: .2rem; }
.steps { padding-left: 1.4rem; margin: 0 0 1rem; }
.steps li { margin: 0 0 .9rem; padding-left: .3rem; }
.steps li::marker { font-family: var(--display); font-weight: 600; color: var(--accent); }

details { border-top: 1px solid var(--line); padding: .9rem 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font: 600 1.02rem/1.4 var(--display); letter-spacing: -.01em; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-weight: 400; font-size: 1.3rem; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { margin: .6rem 0 .2rem; color: #33363c; }

/* inner pages */
.crumbs { padding-top: 1.4rem; font-size: .9rem; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: .4rem; margin: 0; padding: 0; color: var(--muted); }
.crumbs li + li::before { content: "/"; margin-right: .4rem; color: var(--guide); }
.crumbs a { color: var(--muted); }
main > .narrow { padding-bottom: 2rem; }
.sheet { margin: 1.4rem 0 .5rem; }
.sheet img { display: block; width: 100%; max-width: 30rem; height: auto; border: 1px solid var(--line); background: #fff; }

.foot { margin-top: 4rem; border-top: 1px solid var(--line); padding: 1.6rem 0 2.4rem; font-size: .9rem; color: var(--muted); }
.foot p { margin: 0 0 .4rem; }
.foot a { color: var(--muted); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print { .top, .foot, .skip, .actions, .tester { display: none; } }