:root {
  --sth-paper: #f1ede2;
  --sth-paper-deep: #ded7c9;
  --sth-ink: #10100e;
  --sth-muted: #5d5a52;
  --sth-line: rgba(16, 16, 14, .22);
  --sth-cyan: #04b9d1;
  --sth-magenta: #ed3b89;
  --sth-yellow: #f0d22f;
  --sth-white: #fffdf7;
  --sth-red: #b33125;
  --sth-green: #17694f;
  --sth-max: 1480px;
  --sth-gutter: clamp(18px, 4vw, 68px);
  --sth-radius: 0;
  --sth-shadow: 0 24px 70px rgba(16, 16, 14, .16);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--sth-paper); }
body {
  margin: 0;
  min-width: 300px;
  color: var(--sth-ink);
  background:
    linear-gradient(90deg, transparent calc(100% - 1px), rgba(16,16,14,.04) 1px) 0 0 / 24px 24px,
    linear-gradient(transparent calc(100% - 1px), rgba(16,16,14,.04) 1px) 0 0 / 24px 24px,
    var(--sth-paper);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: .18em; }
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }

.sth-skip {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  transform: translateY(-150%);
  background: var(--sth-yellow);
  border: 2px solid var(--sth-ink);
  font-weight: 800;
}
.sth-skip:focus { transform: none; }

:focus-visible {
  outline: 3px solid var(--sth-white);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px var(--sth-ink);
}
::selection { color: var(--sth-ink); background: var(--sth-yellow); }

.sth-proofline {
  min-height: 31px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 5px var(--sth-gutter);
  color: var(--sth-paper);
  background: var(--sth-ink);
  border-bottom: 1px solid rgba(255,255,255,.18);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .16em;
}

.sth-header {
  position: relative;
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto auto;
  gap: 30px;
  align-items: center;
  max-width: var(--sth-max);
  min-height: 94px;
  margin: 0 auto;
  padding: 15px var(--sth-gutter);
  background: rgba(241,237,226,.96);
  border-bottom: 2px solid var(--sth-ink);
}

.sth-wordmark {
  display: inline-flex;
  width: fit-content;
  gap: 14px;
  align-items: center;
  text-decoration: none;
}
.sth-wordmark b {
  display: block;
  font-size: clamp(13px, 1.4vw, 18px);
  line-height: 1.1;
  letter-spacing: -.02em;
}
.sth-wordmark small {
  display: block;
  margin-top: 5px;
  color: var(--sth-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.sth-regmark {
  position: relative;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  isolation: isolate;
}
.sth-regmark i { position: absolute; width: 26px; height: 26px; mix-blend-mode: multiply; }
.sth-regmark i:nth-child(1) { top: 4px; left: 4px; background: var(--sth-cyan); }
.sth-regmark i:nth-child(2) { top: 0; left: 8px; background: var(--sth-magenta); }
.sth-regmark i:nth-child(3) { top: 8px; left: 12px; background: var(--sth-yellow); }
.sth-regmark i:nth-child(4) { top: 8px; left: 8px; background: transparent; border: 3px solid var(--sth-ink); }

.sth-menu { display: flex; gap: clamp(12px, 2vw, 27px); align-items: center; }
.sth-menu a {
  position: relative;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .05em;
  text-decoration: none;
  text-transform: uppercase;
}
.sth-menu a::after { content: ''; position: absolute; left: 0; right: 100%; bottom: -6px; height: 3px; background: var(--sth-magenta); transition: right .2s ease; }
.sth-menu a:hover::after, .sth-menu a:focus-visible::after { right: 0; }
.sth-menu .sth-menu__contact { padding: 10px 14px; color: var(--sth-paper); background: var(--sth-ink); }
.sth-menu .sth-menu__contact::after { display: none; }
.sth-menu-button {
  display: none;
  min-width: 84px;
  padding: 11px 14px;
  border: 2px solid var(--sth-ink);
  background: transparent;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.sth-main { overflow: clip; }
.sth-wrap { width: min(100%, var(--sth-max)); margin-inline: auto; padding-inline: var(--sth-gutter); }
.sth-label {
  margin: 0 0 16px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.sth-kicker { font-weight: 800; color: var(--sth-muted); }
.sth-display {
  margin: 0;
  font-size: clamp(50px, 10vw, 150px);
  font-weight: 900;
  line-height: .82;
  letter-spacing: -.075em;
  text-transform: uppercase;
  overflow-wrap: anywhere;
  hyphens: auto;
}
.sth-display em { color: var(--sth-magenta); font-style: normal; }
.sth-heading {
  margin: 0;
  max-width: 16ch;
  font-size: clamp(37px, 6vw, 82px);
  font-weight: 900;
  line-height: .96;
  letter-spacing: -.055em;
  overflow-wrap: anywhere;
  hyphens: auto;
}
.sth-heading em { color: var(--sth-magenta); font-style: normal; }
.sth-lead { max-width: 66ch; font-size: clamp(18px, 2vw, 25px); line-height: 1.35; }
.sth-micro { color: var(--sth-muted); font-size: 12px; }

.sth-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.sth-button,
.sth-actions a,
.sth-register-controls button,
.sth-tool button,
.sth-lead button {
  display: inline-flex;
  min-height: 48px;
  justify-content: center;
  align-items: center;
  padding: 12px 18px;
  border: 2px solid var(--sth-ink);
  border-radius: 0;
  color: var(--sth-paper);
  background: var(--sth-ink);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .06em;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
}
.sth-button--paper,
.sth-actions a:nth-child(even),
.sth-tool button.sth-reset { color: var(--sth-ink); background: transparent; }
.sth-actions a:hover, .sth-button:hover, .sth-tool button:hover { color: var(--sth-ink); background: var(--sth-yellow); }

/* Cover: large typographic plate, not a card grid. */
.sth-cover {
  position: relative;
  width: min(100%, var(--sth-max));
  min-height: min(860px, calc(100svh - 125px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, .9fr);
  border-inline: 2px solid var(--sth-ink);
  border-bottom: 2px solid var(--sth-ink);
}
.sth-cover__copy { position: relative; z-index: 2; padding: clamp(48px, 7vw, 108px) var(--sth-gutter) 56px; }
.sth-cover__copy h1 {
  margin: 0;
  max-width: 9ch;
  font-size: clamp(62px, 9vw, 140px);
  font-weight: 900;
  line-height: .8;
  letter-spacing: -.075em;
  text-transform: uppercase;
}
.sth-cover__copy h1 span { position: relative; display: inline-block; color: var(--sth-ink); text-shadow: 5px 0 var(--sth-cyan), -4px 1px var(--sth-magenta), 0 5px var(--sth-yellow); }
.sth-cover__intro { max-width: 55ch; margin: 34px 0 0; font-size: clamp(18px, 1.8vw, 24px); }
.sth-cover__fine { max-width: 64ch; margin: 20px 0 0; color: var(--sth-muted); font-size: 12px; }
.sth-cover__visual { position: relative; min-height: 620px; overflow: hidden; background: var(--sth-ink); border-left: 2px solid var(--sth-ink); }
.sth-cover__visual img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.95) contrast(1.05); }
.sth-cover__visual::after {
  content: 'REG / 00';
  position: absolute;
  right: 16px;
  bottom: 15px;
  padding: 7px 10px;
  color: var(--sth-ink);
  background: var(--sth-yellow);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .13em;
}
.sth-cover__crop { position: absolute; inset: 14px; pointer-events: none; border: 1px solid rgba(255,255,255,.44); }
.sth-cover__crop::before, .sth-cover__crop::after { content: ''; position: absolute; width: 48px; height: 48px; border: 2px solid var(--sth-white); }
.sth-cover__crop::before { top: -7px; left: -7px; border-right: 0; border-bottom: 0; }
.sth-cover__crop::after { right: -7px; bottom: -7px; border-top: 0; border-left: 0; }

.sth-colophon-strip {
  display: grid;
  grid-template-columns: 1.4fr .7fr .7fr 1.2fr;
  width: min(100%, var(--sth-max));
  margin: 0 auto;
  border-inline: 2px solid var(--sth-ink);
  border-bottom: 2px solid var(--sth-ink);
  background: var(--sth-white);
}
.sth-colophon-strip > div { padding: 18px var(--sth-gutter); border-right: 1px solid var(--sth-ink); }
.sth-colophon-strip > div:last-child { border-right: 0; }
.sth-colophon-strip span { display: block; margin-bottom: 5px; font-size: 9px; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
.sth-colophon-strip strong { font-size: 13px; line-height: 1.2; }

.sth-register-section { color: var(--sth-paper); background: var(--sth-ink); border-bottom: 2px solid var(--sth-ink); }
.sth-register-inner { width: min(100%, var(--sth-max)); margin: 0 auto; display: grid; grid-template-columns: .72fr 1.28fr; min-height: 720px; }
.sth-register-copy { padding: clamp(60px, 8vw, 120px) var(--sth-gutter); border-right: 1px solid rgba(255,255,255,.25); }
.sth-register-copy .sth-heading { color: var(--sth-paper); }
.sth-register-copy p:last-child { max-width: 50ch; color: #cbc5b8; }
.sth-register-lab { padding: clamp(35px, 6vw, 80px) var(--sth-gutter); display: flex; flex-direction: column; justify-content: center; }
.sth-register-plate {
  position: relative;
  min-height: 350px;
  overflow: hidden;
  color: var(--sth-ink);
  background: var(--sth-paper);
  border: 1px solid rgba(255,255,255,.45);
  box-shadow: 14px 14px 0 var(--sth-cyan), -12px -10px 0 var(--sth-magenta), 8px -12px 0 var(--sth-yellow);
}
.sth-register-plate::before, .sth-register-plate::after { content: ''; position: absolute; z-index: 4; width: 38px; height: 38px; border: 1px solid var(--sth-ink); border-radius: 50%; }
.sth-register-plate::before { top: 16px; left: 16px; }
.sth-register-plate::after { right: 16px; bottom: 16px; }
.sth-register-plate__claim { position: absolute; inset: 0; display: grid; place-items: center; padding: 64px 30px; font-size: clamp(34px, 5vw, 72px); font-weight: 900; line-height: .92; letter-spacing: -.055em; text-align: center; text-transform: uppercase; }
.sth-register-plate__layer { position: absolute; inset: 0; pointer-events: none; mix-blend-mode: multiply; transition: transform .5s cubic-bezier(.2,.8,.2,1), opacity .3s; }
.sth-register-plate__layer::before { content: ''; position: absolute; inset: 24% 17%; border: 22px solid currentColor; }
.sth-register-plate__layer[data-sth-layer="definition"] { color: var(--sth-cyan); transform: translate(-24px, 13px); }
.sth-register-plate__layer[data-sth-layer="source"] { color: var(--sth-magenta); transform: translate(20px, -17px); }
.sth-register-plate__layer[data-sth-layer="interval"] { color: var(--sth-yellow); transform: translate(13px, 24px); }
.sth-register-plate__layer[data-sth-layer="limit"] { color: rgba(16,16,14,.62); transform: translate(-14px, -23px); }
.sth-register-plate__layer[data-aligned="true"] { transform: translate(0,0); }
.sth-register-controls { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 36px; background: rgba(255,255,255,.25); border: 1px solid rgba(255,255,255,.25); }
.sth-register-controls button { min-height: 92px; justify-content: flex-start; align-items: flex-start; padding: 16px; border: 0; color: var(--sth-paper); background: var(--sth-ink); text-align: left; }
.sth-register-controls button span { display: block; margin-bottom: 8px; color: #aba596; font-size: 9px; }
.sth-register-controls button[aria-pressed="true"] { color: var(--sth-ink); background: var(--sth-yellow); }
.sth-register-output { min-height: 62px; margin: 24px 0 0; color: #dcd6ca; }
.sth-register-output strong { color: var(--sth-yellow); }

.sth-why { width: min(100%, var(--sth-max)); margin: 0 auto; padding: clamp(72px, 9vw, 132px) var(--sth-gutter); border-inline: 2px solid var(--sth-ink); }
.sth-why__intro { display: grid; grid-template-columns: .8fr 1.2fr; gap: 5vw; align-items: end; padding-bottom: 52px; border-bottom: 2px solid var(--sth-ink); }
.sth-why__intro p { max-width: 53ch; margin: 0; font-size: 20px; }
.sth-why__rows { counter-reset: overprint; }
.sth-why__row { counter-increment: overprint; display: grid; grid-template-columns: 80px .75fr 1.25fr; gap: 30px; align-items: baseline; padding: 28px 0; border-bottom: 1px solid var(--sth-ink); }
.sth-why__row::before { content: '0' counter(overprint); font-size: 11px; font-weight: 900; }
.sth-why__row h3 { margin: 0; font-size: clamp(28px, 4vw, 54px); line-height: .9; text-transform: uppercase; }
.sth-why__row p { margin: 0; font-size: 17px; }
.sth-why__row:nth-child(1) h3 { text-shadow: 3px 0 var(--sth-cyan); }
.sth-why__row:nth-child(2) h3 { text-shadow: 3px 0 var(--sth-magenta); }
.sth-why__row:nth-child(3) h3 { text-shadow: 3px 0 var(--sth-yellow); }

.sth-editions { color: var(--sth-paper); background: var(--sth-ink); }
.sth-editions__intro { width: min(100%, var(--sth-max)); margin: 0 auto; padding: 92px var(--sth-gutter) 48px; }
.sth-editions__list { width: min(100%, var(--sth-max)); margin: 0 auto; }
.sth-edition {
  position: relative;
  display: grid;
  grid-template-columns: 130px .85fr 1.15fr 160px;
  gap: 25px;
  align-items: center;
  min-height: 190px;
  padding: 30px var(--sth-gutter);
  color: var(--sth-ink);
  background: var(--sth-cyan);
  border-top: 2px solid var(--sth-ink);
  text-decoration: none;
}
.sth-edition:nth-child(2) { background: var(--sth-magenta); }
.sth-edition:nth-child(3) { background: var(--sth-yellow); }
.sth-edition:nth-child(4) { color: var(--sth-paper); background: #2a2926; border-bottom: 2px solid var(--sth-paper); }
.sth-edition > b { font-size: 62px; line-height: 1; }
.sth-edition h3 { margin: 0; font-size: clamp(30px, 4vw, 58px); line-height: .9; letter-spacing: -.05em; text-transform: uppercase; }
.sth-edition p { max-width: 52ch; margin: 0; font-size: 17px; }
.sth-edition span { font-size: 12px; font-weight: 900; text-transform: uppercase; }
.sth-edition:hover h3 { transform: translateX(9px); }
.sth-edition h3 { transition: transform .2s ease; }

.sth-feature { width: min(100%, var(--sth-max)); margin: 0 auto; display: grid; grid-template-columns: 1.08fr .92fr; border-inline: 2px solid var(--sth-ink); }
.sth-feature figure { margin: 0; min-height: 560px; background: var(--sth-ink); }
.sth-feature figure img { width: 100%; height: 100%; object-fit: cover; }
.sth-feature article { padding: clamp(60px, 8vw, 120px) var(--sth-gutter); display: flex; flex-direction: column; justify-content: center; background: var(--sth-white); border-left: 2px solid var(--sth-ink); }
.sth-feature article p { max-width: 48ch; font-size: 18px; }

.sth-boundary { color: var(--sth-paper); background: var(--sth-ink); }
.sth-boundary__inner { width: min(100%, var(--sth-max)); margin: 0 auto; padding: clamp(72px, 10vw, 145px) var(--sth-gutter); display: grid; grid-template-columns: 1.15fr .85fr; gap: 7vw; }
.sth-boundary h2 { margin: 0; font-size: clamp(48px, 8vw, 118px); line-height: .82; letter-spacing: -.07em; text-transform: uppercase; }
.sth-boundary h2 em { display: block; color: var(--sth-yellow); font-style: normal; }
.sth-boundary p { max-width: 48ch; font-size: 19px; }
.sth-boundary a { color: var(--sth-yellow); font-weight: 900; }

.sth-request { width: min(100%, var(--sth-max)); margin: 0 auto; display: grid; grid-template-columns: .9fr 1.1fr; border: 2px solid var(--sth-ink); border-top: 0; background: var(--sth-paper); }
.sth-request__copy, .sth-lead { padding: clamp(45px, 6vw, 86px) var(--sth-gutter); }
.sth-request__copy { border-right: 2px solid var(--sth-ink); }
.sth-request__copy h2 { margin: 0; max-width: 12ch; font-size: clamp(38px, 5vw, 70px); line-height: .92; letter-spacing: -.055em; }
.sth-request__copy p:last-child { max-width: 54ch; font-size: 17px; }
.sth-lead { display: flex; flex-direction: column; justify-content: center; background: var(--sth-yellow); }
.sth-lead label { display: block; margin-bottom: 9px; font-size: 12px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.sth-lead__row { display: grid; grid-template-columns: 1fr auto; }
.sth-lead input[type="email"] { min-width: 0; height: 58px; padding: 0 15px; border: 2px solid var(--sth-ink); border-right: 0; border-radius: 0; color: var(--sth-ink); background: var(--sth-white); }
.sth-lead button { min-height: 58px; }
.sth-lead button:disabled, .sth-lead input:disabled { opacity: .58; cursor: not-allowed; }
.sth-hp { position: absolute !important; width: 1px !important; height: 1px !important; overflow: hidden !important; clip: rect(0 0 0 0) !important; white-space: nowrap !important; }
.sth-form-state { min-height: 26px; margin: 12px 0 0; font-weight: 800; }
.sth-form-state[data-kind="error"] { color: #852219; }
.sth-form-state[data-kind="success"] { color: #12553f; }
html:not(.sth-js) .sth-form-state--runtime { display: none; }

/* Internal page system */
.sth-page-opening { width: min(100%, var(--sth-max)); margin: 0 auto; display: grid; grid-template-columns: 220px 1fr; min-height: 480px; border-inline: 2px solid var(--sth-ink); border-bottom: 2px solid var(--sth-ink); }
.sth-page-opening__symbol { display: grid; place-items: center; color: var(--sth-paper); background: var(--sth-ink); font-size: clamp(110px, 20vw, 280px); font-weight: 900; line-height: .7; overflow: hidden; }
.sth-page-opening__copy { padding: clamp(58px, 8vw, 115px) var(--sth-gutter); }
.sth-page-opening__copy h1 { margin: 0; max-width: 14ch; font-size: clamp(47px, 7vw, 100px); line-height: .86; letter-spacing: -.065em; text-transform: uppercase; overflow-wrap: anywhere; hyphens: auto; }
.sth-page-opening__copy p:not(.sth-label) { max-width: 62ch; font-size: 20px; }
.sth-page-opening--cyan .sth-page-opening__symbol { color: var(--sth-ink); background: var(--sth-cyan); }
.sth-page-opening--magenta .sth-page-opening__symbol { color: var(--sth-ink); background: var(--sth-magenta); }
.sth-page-opening--yellow .sth-page-opening__symbol { color: var(--sth-ink); background: var(--sth-yellow); }

.sth-reading { width: min(100%, var(--sth-max)); margin: 0 auto; padding: clamp(60px, 8vw, 120px) var(--sth-gutter); border-inline: 2px solid var(--sth-ink); }
.sth-reading--white { background: var(--sth-white); }
.sth-reading__grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 7vw; }
.sth-reading__grid + .sth-reading__grid { margin-top: 80px; padding-top: 80px; border-top: 2px solid var(--sth-ink); }
.sth-reading h2 { margin: 0; max-width: 13ch; font-size: clamp(34px, 5vw, 68px); line-height: .95; letter-spacing: -.05em; }
.sth-reading h3 { margin: 0 0 16px; font-size: clamp(25px, 3vw, 40px); line-height: 1; }
.sth-reading p, .sth-reading li { font-size: 17px; }
.sth-reading ul, .sth-reading ol { padding-left: 1.2em; }
.sth-reading li + li { margin-top: 12px; }
.sth-note { margin: 28px 0; padding: 22px 24px; border-left: 9px solid var(--sth-magenta); background: rgba(237,59,137,.11); }
.sth-proof-example { padding: 30px; color: var(--sth-paper); background: var(--sth-ink); box-shadow: 10px 10px 0 var(--sth-cyan), 19px 19px 0 var(--sth-magenta); }
.sth-proof-example span { font-size: 10px; font-weight: 900; letter-spacing: .14em; }
.sth-proof-example blockquote { margin: 24px 0 0; font-size: clamp(24px, 3vw, 38px); font-weight: 800; line-height: 1.1; }

.sth-edition-index { width: min(100%, var(--sth-max)); margin: 0 auto; border-inline: 2px solid var(--sth-ink); }
.sth-edition-index a { display: grid; grid-template-columns: 90px 1fr 1fr auto; gap: 24px; align-items: center; min-height: 132px; padding: 24px var(--sth-gutter); border-bottom: 2px solid var(--sth-ink); text-decoration: none; }
.sth-edition-index a:nth-child(4n+1) { background: var(--sth-cyan); }
.sth-edition-index a:nth-child(4n+2) { background: var(--sth-magenta); }
.sth-edition-index a:nth-child(4n+3) { background: var(--sth-yellow); }
.sth-edition-index a:nth-child(4n+4) { color: var(--sth-paper); background: var(--sth-ink); }
.sth-edition-index b { font-size: 40px; }
.sth-edition-index h2, .sth-edition-index h3 { margin: 0; font-size: clamp(25px, 3vw, 45px); line-height: .95; text-transform: uppercase; }
.sth-edition-index p { margin: 0; }
.sth-edition-index span { font-size: 24px; font-weight: 900; }

.sth-tool { width: min(100%, var(--sth-max)); margin: 0 auto; border-inline: 2px solid var(--sth-ink); border-bottom: 2px solid var(--sth-ink); }
.sth-tool__head { padding: 56px var(--sth-gutter); border-bottom: 2px solid var(--sth-ink); }
.sth-tool__head h2 { margin: 0; max-width: 17ch; font-size: clamp(38px, 6vw, 82px); line-height: .9; letter-spacing: -.055em; }
.sth-tool__surface { padding: clamp(35px, 6vw, 82px) var(--sth-gutter); background: var(--sth-white); }
.sth-tool__output { min-height: 74px; margin-top: 24px; padding: 20px; color: var(--sth-paper); background: var(--sth-ink); font-size: 17px; }
.sth-tool__output strong { color: var(--sth-yellow); }
.sth-tool__controls { display: flex; flex-wrap: wrap; gap: 8px; }
.sth-tool__controls button[aria-pressed="true"], .sth-tool__controls button[data-active="true"] { color: var(--sth-ink); background: var(--sth-yellow); }
.sth-field { display: grid; gap: 7px; }
.sth-field input, .sth-field select { height: 52px; padding: 0 12px; border: 2px solid var(--sth-ink); border-radius: 0; background: var(--sth-paper); }
.sth-cost-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.sth-results-strip { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 28px; border: 2px solid var(--sth-ink); }
.sth-results-strip > div { min-height: 130px; padding: 18px; border-right: 1px solid var(--sth-ink); }
.sth-results-strip > div:last-child { border-right: 0; }
.sth-results-strip span { display: block; font-size: 10px; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.sth-results-strip strong { display: block; margin-top: 20px; font-size: 28px; }

.sth-scan-list { display: grid; gap: 1px; background: var(--sth-ink); border: 2px solid var(--sth-ink); }
.sth-scan-list label { display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: center; min-height: 66px; padding: 14px 18px; background: var(--sth-paper); font-weight: 800; }
.sth-scan-list input { width: 23px; height: 23px; accent-color: var(--sth-magenta); }

.sth-overprint-stage {
  --sth-shift: 28px;
  position: relative;
  min-height: 420px;
  overflow: hidden;
  color: var(--sth-ink);
  background: var(--sth-paper);
  border: 2px solid var(--sth-ink);
  isolation: isolate;
}
.sth-overprint-stage__claim { position: absolute; inset: 0; z-index: 5; display: grid; place-items: center; padding: 40px; font-size: clamp(38px, 7vw, 96px); font-weight: 900; line-height: .85; text-align: center; text-transform: uppercase; }
.sth-overprint-stage i { position: absolute; inset: 14% 20%; mix-blend-mode: multiply; transition: transform .15s linear; }
.sth-overprint-stage i:nth-child(1) { background: rgba(4,185,209,.72); transform: translate(calc(var(--sth-shift) * -1), calc(var(--sth-shift) * .4)); }
.sth-overprint-stage i:nth-child(2) { background: rgba(237,59,137,.7); transform: translate(var(--sth-shift), calc(var(--sth-shift) * -.7)); }
.sth-overprint-stage i:nth-child(3) { background: rgba(240,210,47,.7); transform: translate(calc(var(--sth-shift) * .4), var(--sth-shift)); }
.sth-overprint-stage i:nth-child(4) { border: 12px solid rgba(16,16,14,.55); transform: translate(calc(var(--sth-shift) * -.55), calc(var(--sth-shift) * -.45)); }
.sth-overprint-stage[data-shift="0"] { --sth-shift: 0px; }
.sth-overprint-stage[data-shift="1"] { --sth-shift: 6px; }
.sth-overprint-stage[data-shift="2"] { --sth-shift: 14px; }
.sth-overprint-stage[data-shift="3"] { --sth-shift: 24px; }
.sth-overprint-stage[data-shift="4"] { --sth-shift: 36px; }
.sth-range-row { display: grid; grid-template-columns: auto 1fr auto; gap: 18px; align-items: center; margin-top: 26px; }
.sth-range-row input { width: 100%; accent-color: var(--sth-magenta); }

.sth-ink-words { display: flex; flex-wrap: wrap; gap: clamp(12px, 3vw, 38px); justify-content: center; padding: 40px 0; }
.sth-ink-words button { min-height: 0; padding: 0; border: 0; color: var(--sth-ink); background: transparent; font-size: clamp(43px, 8vw, 112px); font-weight: 900; line-height: .8; letter-spacing: -.07em; text-transform: uppercase; }
.sth-ink-words button[aria-pressed="true"] { color: var(--sth-paper); background: var(--sth-ink); box-shadow: 8px 8px 0 var(--sth-magenta); }

.sth-quiz-list { display: grid; gap: 16px; }
.sth-quiz-row { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; padding: 22px; border: 2px solid var(--sth-ink); background: var(--sth-paper); }
.sth-quiz-row p { margin: 0; font-size: 17px; font-weight: 800; }
.sth-quiz-row fieldset { display: flex; gap: 12px; margin: 0; padding: 0; border: 0; }
.sth-quiz-row label { display: flex; gap: 5px; align-items: center; font-size: 12px; font-weight: 900; text-transform: uppercase; }

.sth-two-print { display: grid; grid-template-columns: 1fr 1fr; border: 2px solid var(--sth-ink); }
.sth-two-print article { min-height: 330px; padding: 34px; background: var(--sth-cyan); }
.sth-two-print article + article { background: var(--sth-magenta); border-left: 2px solid var(--sth-ink); }
.sth-two-print h3 { font-size: clamp(32px, 4vw, 54px); line-height: .9; }
.sth-two-print button { color: var(--sth-ink); background: transparent; }
.sth-two-print button[aria-pressed="true"] { background: var(--sth-yellow); }

.sth-library { width: min(100%, var(--sth-max)); margin: 0 auto; border-inline: 2px solid var(--sth-ink); }
.sth-library a { display: grid; grid-template-columns: 100px 1fr 1fr auto; gap: 26px; align-items: center; min-height: 150px; padding: 26px var(--sth-gutter); border-bottom: 1px solid var(--sth-ink); text-decoration: none; }
.sth-library a:hover { background: var(--sth-yellow); }
.sth-library b { font-size: 11px; letter-spacing: .14em; }
.sth-library h2, .sth-library h3 { margin: 0; font-size: clamp(28px, 4vw, 54px); line-height: .9; }
.sth-library p { margin: 0; }

.sth-glossary { width: min(100%, var(--sth-max)); margin: 0 auto; border-inline: 2px solid var(--sth-ink); }
.sth-glossary__filter { position: sticky; top: 0; z-index: 4; display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; padding: 18px var(--sth-gutter); color: var(--sth-paper); background: var(--sth-ink); }
.sth-glossary__filter input { height: 48px; padding: 0 14px; border: 2px solid var(--sth-paper); color: var(--sth-paper); background: transparent; }
.sth-glossary__list { display: grid; grid-template-columns: 1fr 1fr; }
.sth-glossary article { min-height: 210px; padding: 30px var(--sth-gutter); border-right: 1px solid var(--sth-ink); border-bottom: 1px solid var(--sth-ink); }
.sth-glossary article:nth-child(even) { border-right: 0; }
.sth-glossary h2 { margin: 0 0 18px; font-size: 32px; text-transform: uppercase; }

.sth-faq { width: min(100%, var(--sth-max)); margin: 0 auto; border-inline: 2px solid var(--sth-ink); }
.sth-faq details { border-bottom: 2px solid var(--sth-ink); background: var(--sth-paper); }
.sth-faq summary { display: grid; grid-template-columns: 70px 1fr auto; gap: 22px; align-items: center; min-height: 104px; padding: 20px var(--sth-gutter); cursor: pointer; list-style: none; font-size: clamp(20px, 2.5vw, 34px); font-weight: 900; line-height: 1.05; }
.sth-faq summary::-webkit-details-marker { display: none; }
.sth-faq summary::after { content: '+'; font-size: 40px; }
.sth-faq details[open] summary { background: var(--sth-yellow); }
.sth-faq details[open] summary::after { content: '−'; }
.sth-faq details > div { max-width: 900px; padding: 0 var(--sth-gutter) 36px calc(var(--sth-gutter) + 92px); font-size: 18px; }

.sth-company-ledger { display: grid; grid-template-columns: .65fr 1.35fr; border: 2px solid var(--sth-ink); }
.sth-company-ledger dt, .sth-company-ledger dd { margin: 0; padding: 18px; border-bottom: 1px solid var(--sth-ink); }
.sth-company-ledger dt { font-size: 10px; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; background: var(--sth-yellow); }
.sth-company-ledger dd { font-weight: 800; background: var(--sth-white); }

.sth-storage {
  position: fixed;
  z-index: 90;
  right: 18px;
  bottom: 18px;
  left: 18px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  color: var(--sth-paper);
  background: var(--sth-ink);
  border: 2px solid var(--sth-paper);
  box-shadow: var(--sth-shadow);
}
.sth-storage[hidden] { display: none; }
.sth-storage p { margin: 5px 0 0; }
.sth-storage > div:last-child { display: flex; gap: 8px; }
.sth-storage button, .sth-storage a { padding: 9px 12px; border: 1px solid var(--sth-paper); color: var(--sth-paper); background: transparent; font-size: 12px; font-weight: 800; text-decoration: none; cursor: pointer; }
.sth-storage-open { position: fixed; z-index: 80; right: 10px; bottom: 10px; padding: 7px 9px; border: 1px solid var(--sth-ink); background: var(--sth-paper); font-size: 10px; font-weight: 800; }

.sth-footer { width: min(100%, var(--sth-max)); margin: 0 auto; display: grid; grid-template-columns: 1.1fr 1.2fr .7fr; gap: 0; color: var(--sth-paper); background: var(--sth-ink); border-inline: 2px solid var(--sth-ink); }
.sth-footer > div { padding: 52px var(--sth-gutter); border-right: 1px solid rgba(255,255,255,.25); }
.sth-footer__mark strong { display: block; margin-top: 18px; }
.sth-footer__mark p, .sth-footer__legal p { color: #c7c1b5; font-size: 13px; }
.sth-footer__legal a { color: var(--sth-yellow); font-size: 13px; font-weight: 800; }
.sth-footer__nav { display: flex; flex-direction: column; padding: 52px 26px; gap: 10px; }
.sth-footer__nav a { font-size: 12px; font-weight: 800; }
.sth-footer__end { grid-column: 1 / -1; margin: 0; padding: 14px var(--sth-gutter); border-top: 1px solid rgba(255,255,255,.25); font-size: 10px; letter-spacing: .08em; }

@media (max-width: 1100px) {
  .sth-header { grid-template-columns: 1fr auto; }
  .sth-menu-button { display: inline-flex; align-items: center; justify-content: center; }
  .sth-menu {
    position: absolute;
    top: 100%;
    right: var(--sth-gutter);
    left: var(--sth-gutter);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    padding: 0;
    color: var(--sth-paper);
    background: var(--sth-ink);
    border: 2px solid var(--sth-paper);
    box-shadow: var(--sth-shadow);
  }
  .sth-js .sth-menu { display: none; }
  .sth-js .sth-menu[data-open="true"] { display: grid; }
  html:not(.sth-js) .sth-menu-button { display: none; }
  html:not(.sth-js) .sth-menu { position: static; grid-column: 1 / -1; }
  .sth-menu a { padding: 18px; border: 1px solid rgba(255,255,255,.2); }
  .sth-cover { grid-template-columns: 1fr 38%; }
  .sth-cover__copy h1 { font-size: clamp(57px, 9vw, 108px); }
  .sth-colophon-strip { grid-template-columns: 1fr 1fr; }
  .sth-colophon-strip > div:nth-child(2) { border-right: 0; }
  .sth-colophon-strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--sth-ink); }
  .sth-register-inner { grid-template-columns: 1fr; }
  .sth-register-copy { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.25); }
  .sth-edition { grid-template-columns: 90px 1fr 1fr; }
  .sth-edition > span { grid-column: 2 / -1; }
  .sth-cost-grid, .sth-results-strip { grid-template-columns: 1fr 1fr; }
  .sth-results-strip > div:nth-child(2) { border-right: 0; }
  .sth-results-strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--sth-ink); }
}

@media (max-width: 820px) {
  .sth-proofline span:last-child { display: none; }
  .sth-header { min-height: 82px; padding-block: 12px; }
  .sth-wordmark small { letter-spacing: .07em; }
  .sth-cover { grid-template-columns: 1fr; }
  .sth-cover__copy { min-height: 570px; }
  .sth-cover__visual { min-height: 440px; border-top: 2px solid var(--sth-ink); border-left: 0; }
  .sth-why__intro, .sth-reading__grid, .sth-boundary__inner, .sth-request { grid-template-columns: 1fr; }
  .sth-why__row { grid-template-columns: 48px 1fr; }
  .sth-why__row p { grid-column: 2; }
  .sth-register-controls { grid-template-columns: 1fr 1fr; }
  .sth-edition { grid-template-columns: 62px 1fr; }
  .sth-edition > p, .sth-edition > span { grid-column: 2; }
  .sth-feature { grid-template-columns: 1fr; }
  .sth-feature figure { min-height: 420px; }
  .sth-feature article { border-top: 2px solid var(--sth-ink); border-left: 0; }
  .sth-page-opening { grid-template-columns: 100px 1fr; min-height: 400px; }
  .sth-page-opening__symbol { font-size: 116px; }
  .sth-edition-index a, .sth-library a { grid-template-columns: 60px 1fr auto; }
  .sth-edition-index a p, .sth-library a p { grid-column: 2 / -1; }
  .sth-request__copy { border-right: 0; border-bottom: 2px solid var(--sth-ink); }
  .sth-two-print { grid-template-columns: 1fr; }
  .sth-two-print article + article { border-top: 2px solid var(--sth-ink); border-left: 0; }
  .sth-glossary__list { grid-template-columns: 1fr; }
  .sth-glossary article { border-right: 0; }
  .sth-footer { grid-template-columns: 1fr 1fr; }
  .sth-footer__mark { grid-column: 1 / -1; border-bottom: 1px solid rgba(255,255,255,.25); }
  .sth-footer__legal { border-right: 1px solid rgba(255,255,255,.25); }
}

@media (max-width: 560px) {
  :root { --sth-gutter: 18px; }
  .sth-wordmark b { max-width: 220px; }
  .sth-wordmark small { display: none; }
  .sth-regmark { width: 36px; height: 36px; transform: scale(.85); transform-origin: left center; }
  .sth-menu { right: 10px; left: 10px; grid-template-columns: 1fr; }
  .sth-cover__copy { min-height: 510px; padding-top: 55px; }
  .sth-cover__copy h1 { font-size: clamp(50px, 18vw, 80px); }
  .sth-cover__visual { min-height: 360px; }
  .sth-colophon-strip { grid-template-columns: 1fr; }
  .sth-colophon-strip > div { border-right: 0; border-bottom: 1px solid var(--sth-ink); }
  .sth-colophon-strip > div:last-child { border-bottom: 0; }
  .sth-register-plate { min-height: 300px; }
  .sth-register-controls { grid-template-columns: 1fr; }
  .sth-register-controls button { min-height: 70px; }
  .sth-edition { min-height: 0; grid-template-columns: 1fr; padding-block: 35px; }
  .sth-edition > p, .sth-edition > span { grid-column: 1; }
  .sth-edition > b { font-size: 34px; }
  .sth-feature figure { min-height: 320px; }
  .sth-boundary__inner { padding-block: 75px; }
  .sth-page-opening { grid-template-columns: 1fr; }
  .sth-page-opening__symbol { min-height: 120px; font-size: 110px; }
  .sth-page-opening__copy { padding-block: 50px; }
  .sth-page-opening__copy h1 { font-size: clamp(34px, 11.5vw, 44px); }
  .sth-edition-index a, .sth-library a { grid-template-columns: 1fr auto; padding-block: 28px; }
  .sth-edition-index a b, .sth-library a b { grid-column: 1 / -1; }
  .sth-edition-index a h2, .sth-edition-index a h3, .sth-library a h2, .sth-library a h3 { grid-column: 1; }
  .sth-edition-index a p, .sth-library a p { grid-column: 1 / -1; }
  .sth-cost-grid, .sth-results-strip { grid-template-columns: 1fr; }
  .sth-results-strip > div { border-right: 0; border-bottom: 1px solid var(--sth-ink); }
  .sth-results-strip > div:last-child { border-bottom: 0; }
  .sth-lead__row { grid-template-columns: 1fr; gap: 8px; }
  .sth-lead input[type="email"] { border-right: 2px solid var(--sth-ink); }
  .sth-faq summary { grid-template-columns: 42px 1fr auto; padding-inline: 16px; }
  .sth-faq details > div { padding-left: 58px; }
  .sth-storage { grid-template-columns: 1fr; }
  .sth-footer { grid-template-columns: 1fr; }
  .sth-footer > div { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.25); }
  .sth-footer__legal { border-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .001ms !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}

@media print {
  .sth-proofline, .sth-header, .sth-storage, .sth-storage-open, .sth-footer__nav, .sth-actions, .sth-request, button { display: none !important; }
  body { color: #000; background: #fff; }
  .sth-main, .sth-reading, .sth-page-opening, .sth-footer { border: 0; }
  .sth-page-opening { min-height: 0; grid-template-columns: 1fr; }
  .sth-page-opening__symbol { display: none; }
  .sth-footer { display: block; color: #000; background: #fff; border-top: 1px solid #000; }
  a { color: #000; text-decoration: underline; }
}