@font-face { font-family: 'Plex'; src: url('/fonts/ibm-plex-sans-latin-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Plex'; src: url('/fonts/ibm-plex-sans-latin-600-normal.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Plex Condensed'; src: url('/fonts/ibm-plex-sans-condensed-latin-600-normal.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Plex Mono'; src: url('/fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2'); font-weight: 500; font-display: swap; }

:root {
  --paper: #eef1f5; --sheet: #fff; --ink: #17202b; --muted: #5b6676; --line: #d5dbe4;
  --seal: #2b4c7e; --seal-ink: #fff; --tint: #dfe6f0;
  --hatch-a: rgb(43 76 126 / .34); --hatch-b: rgb(43 76 126 / .18);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --paper: #0f141b; --sheet: #161d27; --ink: #e4e9f0; --muted: #93a0b2; --line: #273243;
    --seal: #8db3e8; --seal-ink: #0f141b; --tint: #1d2939;
    --hatch-a: rgb(141 179 232 / .3); --hatch-b: rgb(141 179 232 / .14);
    color-scheme: dark;
  }
}
:root[data-theme='dark'] {
  --paper: #0f141b; --sheet: #161d27; --ink: #e4e9f0; --muted: #93a0b2; --line: #273243;
  --seal: #8db3e8; --seal-ink: #0f141b; --tint: #1d2939;
  --hatch-a: rgb(141 179 232 / .3); --hatch-b: rgb(141 179 232 / .14);
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.6 Plex, system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--seal); }
.band, .hatch {
  background: repeating-linear-gradient(45deg, var(--hatch-a) 0 1px, transparent 1px 4px),
              repeating-linear-gradient(-45deg, var(--hatch-b) 0 1px, transparent 1px 6px), var(--tint);
}
.band { height: 8px; }
header.top, footer, main { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
header.top { display: flex; align-items: center; gap: 16px; padding-block: 18px; }
.word { font: 600 20px/1 'Plex Condensed', sans-serif; letter-spacing: .08em; text-decoration: none; color: var(--ink); }
.word small { font: 400 13px Plex, sans-serif; letter-spacing: 0; color: var(--muted); margin-inline-start: 6px; }
nav { margin-inline-start: auto; display: flex; gap: 16px; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--ink); }
h1, h2, h3 { font-family: 'Plex Condensed', sans-serif; font-weight: 600; line-height: 1.1; text-wrap: balance; }
h1 { font-size: clamp(34px, 6vw, 60px); margin: 48px 0 16px; max-width: 16ch; }
h2 { font-size: 30px; margin: 64px 0 16px; }
h3 { font-size: 20px; margin: 0 0 6px; }
.lede { font-size: 20px; color: var(--muted); max-width: 46ch; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 18px; border-radius: 10px; background: var(--seal); color: var(--seal-ink); font-weight: 600; text-decoration: none; }
.btn.ghost { background: none; color: var(--ink); border: 1px solid var(--line); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0; }
/* The signature: the same letter twice — as you have it, and as the AI sees it. */
.letters { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 40px 0; }
.sheet { background: var(--sheet); border-radius: 4px; padding: 22px; box-shadow: 0 10px 30px -18px rgb(23 32 43 / .35); font-size: 15px; white-space: pre-line; }
.sheet .cap { font: 500 12px 'Plex Mono', monospace; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; display: block; }
.m { padding: 0 2px; border-radius: 3px; box-shadow: inset 0 -1.5px 0 var(--seal); }
.m { background: repeating-linear-gradient(45deg, var(--hatch-a) 0 1px, transparent 1px 4px), repeating-linear-gradient(-45deg, var(--hatch-b) 0 1px, transparent 1px 6px), var(--tint); }
.tag { font: 500 .86em 'Plex Mono', monospace; color: var(--seal); padding: 1px 4px; border-radius: 3px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; counter-reset: s; }
.steps li { list-style: none; counter-increment: s; }
.steps li::before { content: counter(s); display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--seal); color: var(--seal); font: 600 14px 'Plex Mono', monospace; margin-bottom: 10px; }
.steps { padding: 0; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.card { background: var(--sheet); border: 1px solid var(--line); border-radius: 14px; padding: 24px; }
.card ul { padding-inline-start: 20px; margin: 10px 0 0; }
.price { font: 600 44px/1 'Plex Condensed', sans-serif; }
.muted { color: var(--muted); }
footer { padding-block: 48px; color: var(--muted); font-size: 14px; display: flex; flex-wrap: wrap; gap: 18px; }
footer a { color: var(--muted); }
.narrow { max-width: 760px; }
.narrow h2 { font-size: 24px; margin-top: 40px; }
.label { font-weight: 600; margin-bottom: 4px; }
.key { font: 500 22px 'Plex Mono', monospace; background: var(--sheet); border: 1px dashed var(--seal); border-radius: 10px; padding: 14px 18px; user-select: all; }
@media (max-width: 760px) { .letters, .steps, .cols { grid-template-columns: 1fr; } nav { display: none; } }