/* 다읽음 · A reading journal, in paper and ink.
   B1 Balanced Spine identity / docs/design/design-direction.md.
   The covers are fictional editorial samples, not app screenshots. */
@font-face {
  font-family: 'Pretendard Variable';
  src: url('/assets/PretendardVariable.woff2') format('woff2');
  font-weight: 45 920;
  font-style: normal;
  font-display: swap;
}
:root {
  color-scheme: light;
  --bg: #faf8f4;
  --surface: #f6f3ed;
  --sunken: #efeae1;
  --fg: #24231f;
  --fg-muted: #656158;
  --fg-subtle: #6a645c;
  --border: #e4dfd5;
  --border-strong: #ccc5b8;
  --primary: #ff8a3d;
  --primary-text: #8b3d0b;
  --primary-press: #f39a60;
  --on-primary: #24231f;
  --ink: #262a27;
  --on-ink: #f6f2e9;
  --ink-muted: #bcbfb3;
  --ink-line: #4f554c;
  --paper: #faf8f4;
  --book-orange: #df713b;
  --book-orange-ink: #351f17;
  --book-sage: #b7c2a8;
  --book-sage-ink: #263b2f;
  --book-blue: #314b60;
  --book-blue-ink: #f3dfb1;
  --book-cream: #e7d9bd;
  --book-cream-ink: #624235;
  --mark: #f5d6a7;
  --cover-line: rgba(36, 35, 31, .14);
  --shadow: rgba(36, 35, 31, .12);
  --maxw: 1280px;
  --gutter: 48px;
  --font: 'Pretendard Variable', Pretendard, sans-serif;
  --mono: 'SFMono-Regular', Consolas, monospace;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --radius-md: 3px;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #151411;
    --surface: #211f1b;
    --sunken: #2c2923;
    --fg: #f3efe5;
    --fg-muted: #bcb6aa;
    --fg-subtle: #b1a99b;
    --border: #36322b;
    --border-strong: #595245;
    --primary-text: #ffab72;
    --ink: #242a24;
    --on-ink: #f6f2e9;
    --mark: #694522;
    --shadow: rgba(0, 0, 0, .25);
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 104px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--font); font-size: 16px; line-height: 1.65; letter-spacing: -.025em; -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4, p, ol, ul, dl, dd, figure { margin: 0; }
h1, h2, h3, h4 { word-break: keep-all; }
a { color: inherit; text-decoration: none; text-underline-offset: .22em; }
button { font: inherit; color: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 2px solid var(--primary-text); outline-offset: 5px; }
::selection { color: var(--on-primary); background: var(--primary); }
[hidden] { display: none !important; }
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.num { font-variant-numeric: tabular-nums; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; padding: 12px 18px; background: var(--fg); color: var(--bg); transform: translateY(-160%); }
.skip-link:focus { transform: none; }

/* Shared navigation */
.nav { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: 1px solid var(--border); }
.nav__row { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; min-height: 44px; }
.brand__mark { width: 32px; height: 32px; flex: none; }
.brand__wordmark { display: block; width: 78px; height: 28px; background: var(--fg); -webkit-mask: url('/brand-wordmark.svg') left center / contain no-repeat; mask: url('/brand-wordmark.svg') left center / contain no-repeat; }
.nav__links { display: flex; align-items: center; gap: 32px; }
.nav__links a { display: inline-flex; min-height: 44px; align-items: center; color: var(--fg-muted); font-size: 14px; font-weight: 550; }
.nav__links a:hover { color: var(--fg); }
.nav__links .nav__cta { padding: 9px 18px; background: var(--fg); color: var(--bg); border-radius: 3px; gap: 24px; font-weight: 650; }
.nav__links .nav__cta:hover { background: var(--primary); color: var(--on-primary); }
.nav__toggle { display: none; border: 0; background: transparent; min-height: 44px; padding: 8px 0 8px 16px; font-size: 14px; }
.nav__toggle span { font-size: 24px; margin-left: 8px; font-weight: 300; line-height: 1; }

/* Opening spread */
.hero { padding-top: 102px; }
.hero__grid { display: grid; grid-template-columns: 1fr 1.04fr; gap: 64px; align-items: center; }
.hero__copy { padding-bottom: 12px; }
.hero h1 { font-size: clamp(46px, 5.25vw, 76px); font-weight: 620; letter-spacing: -.075em; line-height: 1.19; }
.hero__underline { position: relative; white-space: nowrap; }
.hero__underline::after { content: ''; position: absolute; left: 3px; right: 0; bottom: -.045em; height: 3px; background: var(--primary); }
.hero__sub { margin-top: 30px; font-size: 18px; line-height: 1.85; color: var(--fg-muted); font-weight: 400; }
.button { display: inline-flex; min-height: 54px; align-items: center; justify-content: space-between; gap: 48px; padding: 13px 22px; background: var(--primary); color: var(--on-primary); border: 1px solid var(--primary); border-radius: 3px; font-size: 15px; font-weight: 650; transition: background .18s var(--ease); }
.button span { font-size: 19px; line-height: 1; }
.button:hover { background: var(--primary-press); border-color: var(--primary-press); }
.hero__note { margin-top: 18px; font-size: 12px; line-height: 1.7; color: var(--fg-subtle); }
.hero__foot { display: flex; align-items: center; justify-content: space-between; padding-top: 76px; padding-bottom: 28px; font-size: 12px; color: var(--fg-subtle); }
.hero__foot a { display: inline-flex; gap: 16px; min-height: 44px; align-items: center; text-decoration: underline; }
.hero__foot a:hover { color: var(--fg); }

/* Interactive shelf. Covers use their own print palette in both themes. */
.shelf { background: var(--sunken); padding: 28px 28px 22px; border-radius: 5px; position: relative; }
.shelf__heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.shelf__date { font-size: 11px; color: var(--fg-muted); }
.sample-label { font-size: 10px; font-weight: 450; color: var(--fg-subtle); white-space: nowrap; }
.shelf__title-row { margin-top: 16px; display: flex; justify-content: space-between; align-items: center; }
.shelf__title-row h2 { font-size: 29px; font-weight: 650; letter-spacing: -.055em; line-height: 1.3; }
.shelf__count { color: var(--fg-subtle); font: 12px var(--mono); }
.shelf__filters { display: none; gap: 19px; margin-top: 15px; border-bottom: 1px solid var(--border-strong); }
.is-enhanced .shelf__filters { display: flex; }
.shelf__filters button { position: relative; border: 0; background: transparent; padding: 12px 0; min-height: 44px; font-size: 12px; font-weight: 550; color: var(--fg-muted); }
.shelf__filters button[aria-selected='true'] { color: var(--fg); font-weight: 700; }
.shelf__filters button[aria-selected='true']::after { content: ''; position: absolute; bottom: -1px; left: 0; right: 0; height: 2px; background: var(--primary); }
.shelf__filters button:hover { color: var(--fg); }
.shelf__panel { padding-top: 25px; }
.shelf__panel:focus-visible { outline: 2px solid var(--primary-text); outline-offset: 6px; }
.shelf__fallback-title { margin-bottom: 16px; font-size: 14px; }
.is-enhanced .shelf__fallback-title { display: none; }
.book-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 13px; }
.book-item { min-width: 0; }
.book-cover { position: relative; aspect-ratio: .69; display: flex; flex-direction: column; overflow: hidden; padding: 13px 11px 12px 15px; border-radius: 1px 2px 2px 1px; box-shadow: 3px 4px 0 var(--cover-line); }
.book-cover::before { content: ''; position: absolute; top: 0; bottom: 0; left: 5px; border-left: 1px solid var(--cover-line); }
.book-cover__small { font-size: clamp(5px, .55vw, 8px); line-height: 1.3; letter-spacing: -.025em; opacity: 1; }
.book-cover strong { position: relative; z-index: 1; display: block; margin-top: 19px; font-size: clamp(21px, 2.1vw, 30px); font-weight: 560; line-height: 1.1; letter-spacing: -.075em; }
.book-cover__foot { font-size: 6px; margin-top: auto; padding-top: 12px; opacity: 1; }
.book-cover--orange { background: var(--book-orange); color: var(--book-orange-ink); }
.book-cover--orange strong { font-weight: 750; }
.book-cover--orange::after { content: ''; position: absolute; height: 25px; width: 80%; bottom: 29px; left: 15px; border-top: 1px solid currentColor; border-bottom: 1px solid currentColor; }
.book-cover--sage { background: var(--book-sage); color: var(--book-sage-ink); }
.book-cover--sage strong { font-size: clamp(18px, 1.75vw, 25px); line-height: 1.28; }
.book-cover__circle { position: absolute; width: 86%; aspect-ratio: 1; left: 31%; top: 48%; border: 1px solid currentColor; border-radius: 50%; }
.book-cover__circle::before, .book-cover__circle::after { content: ''; position: absolute; inset: 10px; border: 1px solid currentColor; border-radius: 50%; }
.book-cover__circle::after { inset: 21px; }
.book-cover--blue { background: var(--book-blue); color: var(--book-blue-ink); }
.book-cover--blue strong { margin-top: 20px; font-weight: 400; }
.book-cover--blue strong::after { content: ''; display: block; width: 31px; border-top: 1px solid currentColor; margin-top: 12px; }
.book-cover--cream { background: var(--book-cream); color: var(--book-cream-ink); }
.book-cover--cream strong { font-weight: 450; }
.book-item > h3 { font-size: 12px; font-weight: 650; letter-spacing: -.04em; margin-top: 16px; line-height: 1.4; }
.book-item > p { color: var(--fg-muted); font-size: 10px; margin-top: 4px; line-height: 1.6; white-space: nowrap; }
.book-progress { height: 3px; display: block; background: var(--border-strong); margin-top: 11px; overflow: hidden; }
.book-progress i { display: block; width: var(--progress); height: 100%; background: var(--fg-muted); }
.book-status { display: block; font-size: 9px; margin-top: 8px; color: var(--fg-muted); line-height: 1.1; }
.shelf__message { font-size: 12px; color: var(--fg-muted); margin-top: 29px; padding-top: 19px; border-top: 1px solid var(--border-strong); }
.shelf__disclaimer { font-size: 11px; color: var(--fg-subtle); margin-top: 10px; line-height: 1.6; word-break: keep-all; }

/* Editorial sections */
.section { padding-block: 106px; }
.section__heading { display: grid; grid-template-columns: 1fr 2.2fr; gap: 64px; margin-bottom: 64px; }
.section__index { display: flex; gap: 18px; align-items: baseline; font-size: 12px; color: var(--fg-muted); }
.section__index > span { font-family: var(--mono); font-size: 11px; color: var(--fg); }
.section h2 { font-size: clamp(30px, 3.1vw, 43px); letter-spacing: -.055em; line-height: 1.35; font-weight: 600; }
.section__intro { margin-top: 22px; color: var(--fg-muted); line-height: 1.8; font-size: 15px; word-break: keep-all; }
.reading { border-top: 1px solid var(--border); }
.reading__grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 100px; align-items: center; }
.journal { position: relative; background: var(--surface); border: 1px solid var(--border); padding: 30px 36px 0; }
.journal::after { content: ''; position: absolute; top: 8px; left: 8px; right: -8px; bottom: -8px; border-right: 1px solid var(--border-strong); border-bottom: 1px solid var(--border-strong); z-index: -1; }
.journal__top { display: flex; justify-content: space-between; gap: 16px; font-size: 11px; color: var(--fg-muted); padding-bottom: 23px; border-bottom: 1px solid var(--border); }
.journal__book { display: flex; align-items: center; gap: 15px; margin-top: 26px; }
.journal__book-line { display: block; flex: none; width: 28px; height: 40px; background: var(--book-orange); border-left: 4px solid var(--book-orange-ink); }
.journal__book-meta { display: block; font-size: 10px; color: var(--fg-muted); }
.journal__book h3 { font-size: 14px; font-weight: 600; }
.journal__entry { padding-block: 37px 32px; }
.journal__label { font-size: 11px; color: var(--fg-muted); }
.journal__entry p { font-size: clamp(27px, 2.6vw, 36px); font-weight: 450; line-height: 1.85; letter-spacing: -.055em; margin-top: 16px; }
.journal__entry mark { color: inherit; background: linear-gradient(transparent 53%, var(--mark) 53%, var(--mark) 92%, transparent 92%); padding-inline: 2px; }
.journal__date { display: block; margin-top: 28px; font-size: 10px; color: var(--fg-subtle); }
.journal__bottom { display: flex; align-items: center; gap: 8px; min-height: 60px; border-top: 1px solid var(--border); font-size: 11px; color: var(--fg-muted); }
.journal__dot { width: 5px; height: 5px; border: 1px solid var(--fg-muted); border-radius: 50%; }
.feature-list article { padding-block: 28px; border-bottom: 1px solid var(--border); }
.feature-list article:first-child { padding-top: 0; }
.feature-list article:last-child { border-bottom: 0; padding-bottom: 0; }
.feature-list__label { display: block; color: var(--fg-subtle); font-size: 11px; margin-bottom: 11px; }
.feature-list h3 { font-size: 22px; font-weight: 600; letter-spacing: -.045em; line-height: 1.4; }
.feature-list p { max-width: 360px; font-size: 14px; color: var(--fg-muted); margin-top: 12px; line-height: 1.8; word-break: keep-all; }
.feature-list__more { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; margin-top: 6px; font-size: 12px; color: var(--fg-muted); text-decoration: underline; }
.feature-list__more:hover { color: var(--primary-text); }

/* A different reading, a different spread */
.reread { background: var(--ink); color: var(--on-ink); padding-block: 100px 108px; }
.reread__grid { display: grid; grid-template-columns: 1.18fr 1fr; gap: 100px; }
.reread .section__index, .reread .section__index > span { color: var(--ink-muted); }
.reread h2 { font-size: clamp(58px, 7vw, 92px); letter-spacing: -.065em; font-weight: 500; line-height: 1.18; margin-top: 52px; }
.reread h2 > span { color: var(--ink-muted); }
.reread__copy > p:last-child { margin-top: 27px; font-size: 16px; line-height: 1.8; color: var(--ink-muted); }
.reread__record { padding-top: 12px; }
.reread__record-title { display: flex; justify-content: space-between; align-items: center; gap: 12px; border-bottom: 1px solid var(--ink-line); padding-bottom: 22px; font-size: 14px; }
.reread .sample-label { color: var(--ink-muted); }
.reading-history { list-style: none; padding: 0; }
.reading-history li { display: flex; gap: 25px; padding-top: 29px; position: relative; }
.reading-history li:first-child::after { content: ''; position: absolute; left: 12px; top: 59px; bottom: -9px; width: 1px; background: var(--ink-line); }
.reading-history__number { display: flex; flex: none; align-items: center; justify-content: center; height: 27px; width: 27px; border: 1px solid var(--ink-line); border-radius: 50%; font: 10px var(--mono); color: var(--ink-muted); }
.reading-history li:last-child .reading-history__number { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.reading-history h3 { font-size: 11px; font-weight: 400; color: var(--ink-muted); margin-top: 3px; }
.reading-history p { font-size: 20px; line-height: 1.6; letter-spacing: -.04em; margin-top: 12px; }
.reading-history div > span { display: block; margin-top: 14px; font-size: 10px; color: var(--ink-muted); }
.reread__caption { padding-top: 25px; margin-top: 28px; border-top: 1px solid var(--ink-line); font-size: 12px; line-height: 1.8; color: var(--ink-muted); }
.keep { padding-block: 110px 96px; }
.keep__grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 100px; }
.keep h2 { margin-top: 38px; }

/* Native disclosure controls are usable without JavaScript. */
.faq-section { border-top: 1px solid var(--border); }
.faq-section__grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 100px; }
.faq-section h2 { margin-top: 32px; }
.text-link { display: inline-flex; align-items: center; gap: 28px; min-height: 44px; margin-top: 28px; font-size: 13px; text-decoration: underline; }
.text-link:hover { color: var(--primary-text); }
.faq { border-top: 1px solid var(--border-strong); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 23px 0; font-size: 15px; font-weight: 550; line-height: 1.6; list-style: none; cursor: pointer; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; content: '+' / ''; flex: none; width: 18px; font-size: 23px; font-weight: 300; line-height: 1; color: var(--fg-muted); }
.faq details[open] summary::after { content: '−'; content: '−' / ''; }
.faq details p { padding: 0 32px 24px 0; font-size: 14px; color: var(--fg-muted); line-height: 1.9; word-break: keep-all; }
.faq details a { color: var(--primary-text); text-decoration: underline; }

/* Honest prelaunch state: badge slots are visibly placeholders, the working action is the notice form. */
.launch { background: var(--sunken); padding-block: 82px 86px; }
.launch__grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 100px; align-items: start; }
.launch__eyebrow { display: flex; align-items: center; gap: 9px; font-size: 12px; font-weight: 550; color: var(--fg-muted); }
.launch__eyebrow > span { width: 6px; height: 6px; background: var(--primary-text); border-radius: 50%; }
.launch h2 { font-size: clamp(32px, 3.6vw, 49px); line-height: 1.3; font-weight: 600; letter-spacing: -.06em; margin-top: 22px; }
.launch__text { color: var(--fg-muted); font-size: 14px; line-height: 1.8; margin-top: 22px; }

/* Opening spread: call to action. Badge slots keep the official artwork height (44px) so nothing shifts when real badges land. */
.hero__actions { margin-top: 32px; }
.hero__launch { display: flex; align-items: center; gap: 9px; font-size: 12px; font-weight: 550; color: var(--fg-muted); }
.hero__launch > span { width: 6px; height: 6px; background: var(--primary-text); border-radius: 50%; }
.store-badges { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 14px; }
.store-badge { display: inline-flex; align-items: center; min-height: 44px; }
.store-badge--placeholder { flex-direction: column; align-items: flex-start; justify-content: center; gap: 1px; min-width: 150px; padding: 5px 14px; border: 1px dashed var(--border-strong); border-radius: 6px; color: var(--fg-muted); line-height: 1.3; }
.store-badge__store { font-size: 13px; font-weight: 650; color: var(--fg); }
.store-badge__state { font-size: 10px; }
.hero__cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px; margin-top: 20px; }
.hero__browse { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; font-size: 13px; color: var(--fg-muted); text-decoration: underline; }
.hero__browse:hover { color: var(--fg); }

/* 00 Pain points as a ledger: the complaint on the left, the answer beside it, evidence beside the claim. */
.why { background: var(--sunken); border-top: 1px solid var(--border); }
.why__grid { display: grid; grid-template-columns: 1fr 1.8fr; gap: 100px; align-items: start; }
.why h2 { margin-top: 38px; }
.ledger { border-top: 1px solid var(--border-strong); }
.ledger__row { display: grid; grid-template-columns: 1fr 1.2fr; gap: 32px; padding-block: 30px; border-bottom: 1px solid var(--border-strong); align-items: start; }
.ledger__row--figure { grid-template-columns: 1fr 1.2fr auto; }
.ledger dt { font-size: clamp(20px, 1.9vw, 26px); font-weight: 450; line-height: 1.45; letter-spacing: -.045em; color: var(--fg-muted); word-break: keep-all; }
.ledger q { quotes: '“' '”'; }
.ledger dd { padding-top: 4px; font-size: 16px; font-weight: 550; line-height: 1.75; word-break: keep-all; }
.ledger__thumb { width: 84px; aspect-ratio: 3 / 4; padding: 0; overflow: hidden; border: 1px solid var(--border-strong); border-radius: 6px; background: var(--surface); }
.ledger__thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; }

/* Real screens: six across on wide screens, a snap strip on phones. The frame is a rounded rectangle with a 1px line only. */
.screens { border-top: 1px solid var(--border); }
.screens__heading { grid-template-columns: 1fr 2.2fr auto; align-items: start; }
.screen-strip { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 20px; }
.screen { margin: 0; }
.screen__frame { overflow: hidden; border: 1px solid var(--border-strong); border-radius: 14px; background: var(--surface); box-shadow: 0 1px 0 var(--shadow); }
.screen__frame img { width: 100%; height: auto; }
.screen figcaption { display: flex; align-items: baseline; gap: 10px; margin-top: 14px; font-size: 13px; line-height: 1.6; color: var(--fg-muted); word-break: keep-all; }
.screen__num { flex: none; font: 10px var(--mono); color: var(--fg); }
.screen-strip:focus-visible { outline: 2px solid var(--primary-text); outline-offset: 6px; }
.screens__note { margin-top: 36px; font-size: 11px; color: var(--fg-subtle); }

/* 03 Feature index: a two-column definition list, no icons. */
.feature-index { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; border-top: 1px solid var(--border-strong); }
.feature-index > div { padding-block: 22px; border-bottom: 1px solid var(--border); }
.feature-index dt { font-size: 16px; font-weight: 650; letter-spacing: -.035em; }
.feature-index dd { margin-top: 8px; font-size: 13px; line-height: 1.75; color: var(--fg-muted); word-break: keep-all; }

/* 04 Friends: what you can do, and the safeguards next to it. */
.friends { background: var(--sunken); border-top: 1px solid var(--border); }
.friends__grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 100px; }
.friends h2 { margin-top: 38px; }
.friends__lists { display: grid; grid-template-columns: 1.25fr 1fr; gap: 48px; align-items: start; }
.friends__group h3 { padding-bottom: 14px; border-bottom: 1px solid var(--border-strong); font-size: 12px; font-weight: 550; color: var(--fg-muted); }
.friends__group ul { list-style: none; padding: 0; }
.friends__group li { padding-block: 16px; border-bottom: 1px solid var(--border); font-size: 15px; line-height: 1.7; word-break: keep-all; }

/* Price: one asymmetric comparison, the paid column gets the single coral rule. */
.price-section { border-top: 1px solid var(--border); }
.price { display: grid; grid-template-columns: 1.6fr 1fr; gap: 0 64px; border-top: 1px solid var(--border-strong); }
.price__col { position: relative; padding-top: 26px; }
.price__col--support::before { content: ''; position: absolute; top: -1px; left: 0; right: 0; height: 3px; background: var(--primary); }
.price h3 { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; font-size: 22px; font-weight: 600; letter-spacing: -.045em; }
.price__amount { font-size: 15px; font-weight: 500; color: var(--fg-muted); white-space: nowrap; }
.price__amount small { margin-left: 6px; font-size: 11px; }
.price ul { list-style: none; padding: 0; margin-top: 22px; }
.price li { padding-block: 13px; border-top: 1px solid var(--border); font-size: 15px; word-break: keep-all; }
.price__fine { margin-top: 18px; font-size: 11px; color: var(--fg-subtle); }
.price__quote { grid-column: 1 / -1; margin: 56px 0 0; padding-top: 28px; border-top: 1px solid var(--border-strong); }
.price__quote p { font-size: clamp(20px, 2vw, 26px); font-weight: 450; line-height: 1.6; letter-spacing: -.045em; word-break: keep-all; }
.price__quote footer { margin-top: 14px; font-size: 11px; color: var(--fg-subtle); }

/* Maker: the colophon page, set in ink. */
.maker { background: var(--ink); color: var(--on-ink); padding-block: 96px 100px; }
.maker__grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 100px; }
.maker .section__index, .maker .section__index > span { color: var(--ink-muted); }
.maker h2 { margin-top: 44px; font-size: clamp(34px, 3.6vw, 52px); font-weight: 500; line-height: 1.25; letter-spacing: -.06em; }
.maker__story { max-width: 520px; margin-top: 26px; font-size: 16px; line-height: 1.85; color: var(--ink-muted); word-break: keep-all; }
.maker__sign { max-width: 220px; margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--ink-line); font-size: 13px; }
.maker__facts { padding-top: 12px; border-top: 1px solid var(--ink-line); }
.maker__facts > div { display: grid; grid-template-columns: 72px 1fr; gap: 20px; padding-block: 22px; border-bottom: 1px solid var(--ink-line); }
.maker__facts dt { padding-top: 4px; font-size: 12px; color: var(--ink-muted); }
.maker__facts dd { font-size: 14px; line-height: 1.8; word-break: keep-all; }
.maker__facts a { color: var(--on-ink); text-decoration: underline; }
.maker__facts a:hover { color: var(--primary); }
.maker a:focus-visible { outline-color: var(--primary); }

/* Launch notice form. Works as a plain POST without JavaScript. */
.launch__copy .store-badges { margin-top: 30px; }
.notify { position: relative; width: 100%; max-width: 420px; justify-self: end; padding: 30px 32px 28px; background: var(--bg); border: 1px solid var(--border-strong); }
.notify h3 { font-size: 20px; font-weight: 650; letter-spacing: -.045em; }
.notify__lead { margin-top: 8px; font-size: 13px; line-height: 1.7; color: var(--fg-muted); }
.notify__field { margin-top: 22px; }
.notify__field label { display: block; margin-bottom: 8px; font-size: 12px; color: var(--fg-muted); }
.notify input[type='email'] { width: 100%; min-height: 48px; padding: 10px 14px; font: inherit; font-size: 15px; color: var(--fg); background: var(--surface); border: 1px solid var(--fg-subtle); border-radius: 3px; }
.notify input::placeholder { color: var(--fg-subtle); opacity: 1; }
.notify input[type='email']:focus-visible { outline: 2px solid var(--primary-text); outline-offset: 2px; }
.notify__trap { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.notify__consent { margin-top: 18px; }
.check { display: flex; gap: 12px; align-items: flex-start; padding-block: 12px; font-size: 13px; line-height: 1.6; color: var(--fg-muted); cursor: pointer; }
.check input { flex: none; width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--primary); }
.check a { color: var(--primary-text); text-decoration: underline; }
.notify__hint { margin: 0 0 0 30px; font-size: 12px; line-height: 1.6; color: var(--fg-muted); }
.notify .button { width: 100%; margin-top: 20px; }
.notify__status { margin-top: 14px; font-size: 13px; line-height: 1.6; }
.notify__status:empty { margin-top: 0; }
.notify__result { display: none; margin-top: 14px; font-size: 13px; line-height: 1.6; }
.notify__result:target { display: block; }
.notify__fine { margin-top: 16px; font-size: 11px; line-height: 1.7; color: var(--fg-subtle); word-break: keep-all; }

/* Shared footer and document pages */
.footer { padding-block: 54px 28px; border-top: 1px solid var(--border); }
.footer__top { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer__tagline { font-size: 13px; color: var(--fg-muted); }
.footer__links { display: flex; flex-wrap: wrap; gap: 2px 26px; margin-top: 29px; }
.footer__links a { display: inline-flex; align-items: center; min-height: 44px; font-size: 12px; color: var(--fg-muted); }
.footer a:hover { color: var(--primary-text); }
.footer__biz { margin-top: 19px; padding-top: 23px; border-top: 1px solid var(--border); }
.footer__biz dl { display: flex; flex-wrap: wrap; gap: 5px 22px; max-width: 900px; }
.footer__biz dl > div { display: flex; gap: 7px; font-size: 10px; line-height: 1.8; }
.footer__biz dt { color: var(--fg-subtle); flex: none; }
.footer__biz dd { color: var(--fg-muted); }
.footer__biz a { text-decoration: underline; }
.footer__legal { margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--border); font-size: 10px; color: var(--fg-subtle); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }
.footer__grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 32px; }
.footer__grid h4 { font-size: 13px; font-weight: 600; margin-bottom: 12px; }
.footer__grid ul { padding: 0; list-style: none; }
.footer__grid a { display: inline-block; padding-block: 6px; font-size: 12px; }
.footer__brand p { color: var(--fg-muted); margin-top: 12px; font-size: 13px; }
.doc { padding-block: 65px 100px; }
.doc .wrap { max-width: 900px; }
.doc h1 { font-size: clamp(34px, 5vw, 52px); font-weight: 600; line-height: 1.25; letter-spacing: -.06em; margin-block: 12px 18px; }
.doc .updated { color: var(--fg-muted); font-size: 13px; line-height: 1.8; padding-bottom: 28px; margin-bottom: 30px; border-bottom: 1px solid var(--border); }
.doc h2 { font-size: 22px; font-weight: 650; line-height: 1.5; margin: 42px 0 15px; letter-spacing: -.04em; }
.doc h3 { font-size: 17px; font-weight: 600; margin: 26px 0 10px; }
.doc p, .doc li { color: var(--fg-muted); font-size: 15px; line-height: 1.95; margin-bottom: 13px; overflow-wrap: anywhere; }
.doc strong { color: var(--fg); font-weight: 650; }
.doc ul, .doc ol { padding-left: 24px; margin-bottom: 19px; }
.doc li { margin-bottom: 7px; }
.doc a { color: var(--primary-text); text-decoration: underline; }
.doc .button { color: var(--on-primary); text-decoration: none; }
.doc table { display: block; width: 100%; max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; border-collapse: collapse; margin-block: 22px; font-size: 13px; line-height: 1.8; }
.doc table th, .doc table td { min-width: 100px; word-break: keep-all; }
.doc th, .doc td { border: 1px solid var(--border); padding: 13px 15px; text-align: left; }
.doc th { background: var(--sunken); color: var(--fg); font-weight: 600; }
.doc td { color: var(--fg-muted); }
.doc pre { max-width: 100%; overflow: auto; padding: 20px; background: var(--surface); border: 1px solid var(--border); color: var(--fg-muted); font: 12px/1.8 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere; }
.doc code { font-family: var(--mono); font-size: .88em; }
.back, .doc .back { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; color: var(--fg-muted); font-size: 12px; text-decoration: none; margin-bottom: 15px; }
.back:hover { color: var(--primary-text); }

@media (min-width: 1440px) {
  .hero { padding-top: 116px; }
  .hero__foot { padding-top: 90px; }
}
@media (max-width: 1100px) {
  :root { --gutter: 36px; }
  .hero__grid { gap: 36px; }
  .hero h1 { font-size: clamp(43px, 5.3vw, 60px); }
  .hero__sub { font-size: 16px; }
  .shelf { padding: 23px 22px 20px; }
  .book-row { gap: 10px; }
  .book-cover { padding: 12px 8px 10px 13px; }
  .book-cover strong { margin-top: 15px; }
  .reading__grid, .reread__grid, .keep__grid, .faq-section__grid, .launch__grid { gap: 60px; }
  .journal { padding-inline: 28px; }
  .section__heading { gap: 44px; }
}
@media (max-width: 900px) {
  .nav__links { gap: 22px; }
  .hero { padding-top: 70px; }
  .hero__grid { grid-template-columns: 1fr; gap: 52px; }
  .hero__copy { padding-bottom: 0; }
  .hero h1 { font-size: clamp(54px, 8.5vw, 72px); }
  .hero__sub { margin-top: 25px; font-size: 18px; }
  .hero__foot { padding-top: 40px; }
  .shelf { width: 100%; max-width: 620px; justify-self: end; padding: 29px 32px 25px; }
  .shelf__title-row h2 { font-size: 30px; }
  .book-row { gap: 18px; }
  .book-cover { padding: 18px 15px 16px 20px; }
  .book-cover__small { font-size: 8px; }
  .book-cover strong { font-size: 36px; margin-top: 24px; }
  .book-cover--sage strong { font-size: 29px; }
  .book-cover__foot { font-size: 7px; }
  .book-cover--orange::after { bottom: 40px; }
  .book-item > h3 { font-size: 13px; }
  .book-item > p { font-size: 11px; }
  .section { padding-block: 80px; }
  .section__heading { grid-template-columns: 1fr; gap: 25px; margin-bottom: 45px; }
  .reading__grid { gap: 44px; }
  .journal { padding-inline: 22px; }
  .journal__entry p { font-size: 27px; }
  .feature-list h3 { font-size: 20px; }
  .feature-list p { font-size: 13px; }
  .reread { padding-block: 75px; }
  .reread__grid, .keep__grid, .faq-section__grid, .launch__grid { gap: 44px; }
  .reread h2 { font-size: 64px; }
  .reread__copy > p:last-child { font-size: 14px; }
  .keep__grid { grid-template-columns: 1fr; gap: 36px; }
  .launch { padding-block: 65px; }
}
@media (max-width: 760px) {
  :root { --gutter: 24px; }
  html { scroll-padding-top: 88px; }
  .nav__row { min-height: 72px; flex-wrap: wrap; gap: 0 20px; }
  .brand__mark { width: 29px; height: 29px; }
  .brand__wordmark { width: 72px; height: 25px; }
  .nav__links { flex-basis: 100%; padding-block: 5px 17px; gap: 6px 22px; flex-wrap: wrap; }
  .nav__links a { font-size: 13px; }
  .nav__links .nav__cta { padding: 7px 14px; gap: 19px; }
  .has-menu .nav__toggle { display: inline-flex; align-items: center; }
  .has-menu .nav__links { display: none; }
  .has-menu .nav.is-open .nav__links { display: flex; }
  .nav.is-open .nav__toggle span { transform: rotate(45deg); }
  .hero { padding-top: 53px; }
  .hero__grid { gap: 43px; }
  .hero h1 { font-size: clamp(43px, 8.9vw, 62px); }
  .hero__sub { font-size: 16px; margin-top: 24px; }
  .button { min-height: 50px; padding: 11px 19px; font-size: 14px; }
  .hero__note { margin-top: 13px; font-size: 11px; }
  .hero__foot { padding-top: 26px; padding-bottom: 20px; font-size: 11px; }
  .hero__foot a { gap: 11px; }
  .shelf { justify-self: start; max-width: 560px; }
  .book-cover strong { font-size: clamp(25px, 5.5vw, 36px); }
  .book-cover--sage strong { font-size: clamp(22px, 4.6vw, 29px); }
  .section { padding-block: 66px; }
  .section__heading { margin-bottom: 34px; gap: 24px; }
  .section__index { gap: 15px; font-size: 11px; }
  .section h2 { font-size: 32px; line-height: 1.4; }
  .section__intro { margin-top: 17px; font-size: 14px; }
  .reading__grid { grid-template-columns: 1fr; gap: 50px; }
  .journal { padding: 24px 27px 0; max-width: 480px; }
  .journal__entry p { font-size: 33px; }
  .feature-list article { padding-block: 25px; }
  .feature-list h3 { font-size: 23px; }
  .feature-list p { font-size: 14px; max-width: 100%; }
  .reread { padding-block: 63px 58px; }
  .reread__grid { grid-template-columns: 1fr; gap: 39px; }
  .reread h2 { margin-top: 34px; font-size: clamp(58px, 13vw, 84px); }
  .reread__copy > p:last-child { font-size: 15px; margin-top: 23px; }
  .reread__record { padding-top: 0; }
  .reread__record-title { padding-bottom: 19px; }
  .reading-history li { gap: 20px; padding-top: 25px; }
  .reading-history p { font-size: 21px; }
  .reading-history li:first-child::after { bottom: -7px; }
  .reread__caption { font-size: 12px; }
  .keep__grid { grid-template-columns: 1fr; gap: 35px; }
  .keep h2 { margin-top: 24px; }
  .faq-section__grid { grid-template-columns: 1fr; gap: 28px; }
  .faq-section h2 { margin-top: 23px; }
  .text-link { margin-top: 14px; }
  .faq summary { font-size: 14px; padding-block: 20px; gap: 18px; }
  .faq details p { font-size: 13px; padding-right: 20px; }
  .launch { padding-block: 58px; }
  .launch__grid { grid-template-columns: 1fr; gap: 37px; }
  .launch h2 { font-size: clamp(32px, 7.6vw, 44px); }
  .footer { padding-block: 32px 23px; }
  .footer__top { align-items: flex-start; flex-direction: column; gap: 7px; }
  .footer__tagline { font-size: 11px; }
  .footer__links { gap: 0 22px; margin-top: 18px; }
  .footer__links a { font-size: 11px; }
  .footer__biz { margin-top: 11px; padding-top: 18px; }
  .footer__biz dl { gap: 6px 17px; }
  .footer__legal { margin-top: 20px; padding-top: 17px; font-size: 10px; }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
  .doc { padding-block: 35px 70px; }
  .doc h1 { font-size: 34px; }
  .doc h2 { font-size: 21px; }
  .doc p, .doc li { font-size: 14px; }
  .doc .updated { font-size: 12px; }
}
@media (max-width: 480px) {
  .shelf { padding: 21px 19px 18px; }
  .shelf__title-row { margin-top: 13px; }
  .shelf__title-row h2 { font-size: 26px; }
  .shelf__filters { margin-top: 10px; gap: 22px; }
  .shelf__filters button { font-size: 11px; }
  .shelf__panel { padding-top: 22px; }
  .book-row { gap: 10px; }
  .book-cover { padding: 10px 7px 10px 11px; }
  .book-cover__small, .book-cover__foot { display: none; }
  .book-cover strong { font-size: 25px; margin-top: 15px; }
  .book-cover--sage strong { font-size: 20px; }
  .book-cover--blue strong { margin-top: 16px; }
  .book-cover--orange::after { display: none; }
  .book-cover__foot { font-size: 5px; }
  .book-cover__circle { top: 48%; }
  .book-item > h3 { font-size: 10px; margin-top: 12px; }
  .book-item > p { font-size: 10px; }
  .book-progress { margin-top: 9px; }
  .book-status { font-size: 10px; }
  .shelf__message { margin-top: 21px; padding-top: 16px; font-size: 11px; }
  .shelf__disclaimer { font-size: 11px; margin-top: 8px; }
}
@media (max-width: 360px) {
  :root { --gutter: 20px; }
  .hero h1 { font-size: 39px; }
  .hero__sub { font-size: 15px; }
  .hero__foot > span { max-width: 110px; }
  .shelf { padding-inline: 15px; }
  .book-row { gap: 8px; }
  .book-cover { padding-left: 10px; }
  .book-cover strong { font-size: 21px; margin-top: 12px; }
  .book-cover--sage strong { font-size: 17px; }
  .book-cover__small { font-size: 4px; }
  .book-cover--orange::after { bottom: 25px; height: 12px; }
  .book-cover__foot { font-size: 4px; }
  .book-item > h3 { font-size: 10px; }
  .book-item > p, .book-status { font-size: 10px; }
  .section h2 { font-size: 28px; }
  .journal { padding-inline: 23px; }
  .journal__entry p { font-size: 29px; }
  .launch h2 { font-size: 30px; }
}
/* Responsive rules for the sections added in the 2026-10 renewal. */
@media (max-width: 1100px) {
  .why__grid, .friends__grid, .maker__grid { gap: 60px; }
  .ledger__row { gap: 24px; }
  .screen-strip { gap: 14px; }
  .price { gap: 0 40px; }
}
@media (max-width: 900px) {
  .why__grid, .friends__grid, .maker__grid { grid-template-columns: 1fr; gap: 40px; }
  .why h2, .friends h2 { margin-top: 24px; }
  .maker h2 { margin-top: 30px; }
  .screens__heading { grid-template-columns: 1fr auto; }
  .screens__heading > div { grid-column: 1 / -1; }
  .screens__heading .sample-label { grid-row: 1; grid-column: 2; justify-self: end; align-self: start; }
  .screen-strip { display: flex; gap: 16px; margin-inline: calc(var(--gutter) * -1); padding: 2px var(--gutter) 10px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: thin; }
  .screen-strip > li { flex: 0 0 46%; scroll-snap-align: start; }
  .friends__lists { gap: 36px; }
  .maker { padding-block: 75px; }
}
@media (max-width: 760px) {
  .hero__actions { margin-top: 26px; }
  .store-badge--placeholder { min-width: 0; flex: 1 1 140px; }
  .hero__cta-row { gap: 6px 22px; margin-top: 16px; }
  .ledger__row, .ledger__row--figure { grid-template-columns: 1fr auto; gap: 10px 20px; padding-block: 24px; }
  .ledger__row dt { grid-column: 1 / -1; }
  .ledger__thumb { width: 64px; }
  .screen-strip > li { flex-basis: 64%; }
  .screen figcaption { font-size: 12px; margin-top: 12px; }
  .feature-index { gap: 0 28px; }
  .feature-index dt { font-size: 15px; }
  .friends__lists { grid-template-columns: 1fr; gap: 28px; }
  .price { grid-template-columns: 1fr; }
  .price__col--support { margin-top: 40px; border-top: 1px solid var(--border-strong); }
  .price__quote { margin-top: 44px; }
  .maker { padding-block: 63px 58px; }
  .maker__story { font-size: 15px; }
  .maker__facts > div { grid-template-columns: 60px 1fr; gap: 14px; padding-block: 18px; }
  .notify { max-width: 100%; justify-self: start; padding: 24px 22px 22px; }
  .launch__copy .store-badges { margin-top: 24px; }
}
@media (max-width: 480px) {
  .feature-index { grid-template-columns: 1fr; }
  .screen-strip > li { flex-basis: 74%; }
  .ledger dt { font-size: 19px; }
  .ledger dd { font-size: 15px; }
  .price h3 { font-size: 20px; }
}
@media (max-width: 360px) {
  .maker h2 { font-size: 30px; }
  .store-badge--placeholder { flex-basis: 100%; }
}

@media (forced-colors: active) {
  .brand__wordmark, .book-progress i, .shelf__filters button[aria-selected='true']::after, .price__col--support::before, .hero__underline::after { forced-color-adjust: none; background: CanvasText; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media print {
  .nav, .nav__toggle, .hero__foot, .footer__links, .skip-link, .notify, .store-badges { display: none; }
  .reread, .maker { background: none; color: var(--fg); }
  .reread .section__index, .reread .section__index > span, .reread h2 > span, .reread__copy > p:last-child, .reread .sample-label, .reading-history h3, .reading-history__number, .reading-history div > span, .reread__caption, .maker .section__index, .maker .section__index > span, .maker__story, .maker__facts dt { color: var(--fg-muted); }
  .maker__facts a { color: var(--fg); }
  .wrap { padding-inline: 0; }
  .doc { padding-block: 0; }
  a { text-decoration: underline; }
  .footer { margin-top: 32px; }
}