:root {
  --paper: #f2ede3;
  --paper-light: #fbf8f1;
  --ink: #1f211d;
  --muted: #66675f;
  --forest: #263c32;
  --sage: #718273;
  --clay: #a24f38;
  --line: rgba(31, 33, 29, 0.22);
  --display: Georgia, "Times New Roman", serif;
  --body: "Segoe UI", Arial, sans-serif;
  --pad: clamp(1rem, 4vw, 5rem);
  --space: clamp(4.5rem, 10vw, 9rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--ink); }
body { margin: 0; color: var(--ink); background: var(--paper); font: 1rem/1.7 var(--body); }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.25em; }
button, a { overflow-wrap: anywhere; -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 3px solid var(--clay); outline-offset: 4px; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1, h2, h3 { font-family: var(--display); font-weight: 400; letter-spacing: -0.035em; line-height: 1.02; }
h1 { max-width: 15ch; margin: 0; font-size: clamp(3.2rem, 8vw, 7.8rem); }
h2 { margin: 0 0 0.65em; font-size: clamp(2rem, 4vw, 4rem); }
p { margin: 0 0 1.2rem; }

.skip-link { position: fixed; z-index: 100; top: 0.75rem; left: 0.75rem; padding: 0.75rem 1rem; color: white; background: var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { position: relative; z-index: 20; display: grid; grid-template-columns: auto 1fr auto; min-height: 5.75rem; align-items: center; gap: 2rem; padding: 0 var(--pad); border-bottom: 1px solid var(--line); }
.wordmark { display: grid; width: 3rem; aspect-ratio: 1; place-items: center; border: 1px solid currentColor; font: 700 0.8rem/1 var(--display); letter-spacing: 0.12em; text-decoration: none; }
.site-nav { display: flex; justify-content: center; gap: clamp(1rem, 3vw, 3.5rem); }
.site-nav a, .language-switch, .menu-toggle { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; }
.site-nav a, .language-switch { display: inline-flex; min-height: 2.75rem; align-items: center; text-decoration: none; }
.site-nav [aria-current="page"] { text-decoration: underline; text-decoration-thickness: 2px; }
.site-header > *, .book-card > *, .book-detail > *, .split-section > *, .share-panel > *, .contact-band > *, .site-footer > *, .audiobook-layout > *, .resource-book > * { min-width: 0; }
.menu-toggle { display: none; min-width: 3rem; min-height: 3rem; color: inherit; background: transparent; border: 0; }

.page-hero { position: relative; min-height: min(42rem, 76vh); display: flex; flex-direction: column; justify-content: flex-end; padding: clamp(8rem, 18vh, 13rem) var(--pad) clamp(3rem, 8vw, 7rem); border-bottom: 1px solid var(--line); background: radial-gradient(circle at 85% 20%, rgba(113, 130, 115, 0.28), transparent 24rem), var(--paper); }
.page-hero::after { position: absolute; right: var(--pad); bottom: 12%; width: clamp(5rem, 15vw, 13rem); aspect-ratio: 1; content: ""; border: 1px solid var(--line); border-radius: 50%; box-shadow: inset 0 0 0 clamp(1rem, 3vw, 2.5rem) var(--paper), inset 0 0 0 calc(clamp(1rem, 3vw, 2.5rem) + 1px) var(--line); }
.page-hero h1, .page-hero .eyebrow { position: relative; z-index: 1; }
.eyebrow, .book-number { margin: 0 0 1.4rem; color: var(--clay); font-size: 0.7rem; font-weight: 750; letter-spacing: 0.18em; text-transform: uppercase; }
.lede { max-width: 44ch; font: clamp(1.35rem, 2.4vw, 2.15rem)/1.35 var(--display); }
.intro-block, .prose-section, .plain-note, .contact-card, .usage-statement { padding: var(--space) var(--pad); }
.intro-block { display: flex; align-items: flex-end; justify-content: space-between; gap: 3rem; }
.button, .share-actions a, .share-actions button { display: inline-flex; min-height: 3.25rem; max-width: 100%; align-items: center; justify-content: center; padding: 0.75rem 1.3rem; color: var(--paper-light); background: var(--forest); border: 1px solid var(--forest); font-size: 0.75rem; font-weight: 750; letter-spacing: 0.08em; text-align: center; text-decoration: none; text-transform: uppercase; cursor: pointer; }
.button-quiet, .share-actions a, .share-actions button { color: var(--ink); background: transparent; border-color: var(--line); }
.button:hover, .share-actions a:hover, .share-actions button:hover { color: white; background: var(--clay); border-color: var(--clay); }
.text-link { font-weight: 700; }

.book-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; padding: 1px; background: var(--line); }
.book-card { display: grid; grid-template-columns: minmax(10rem, 0.65fr) minmax(0, 1fr); align-items: center; gap: clamp(1.5rem, 4vw, 4rem); padding: clamp(2rem, 5vw, 5rem); background: var(--paper-light); }
.cover-link { display: block; }
.book-card img, .book-detail img, .resource-book img { width: 100%; box-shadow: 0 1.5rem 3rem rgba(31, 33, 29, 0.22); }
.book-card h2 { font-size: clamp(1.8rem, 3.2vw, 3.2rem); }
.book-card h2 a { text-decoration: none; }
.split-section { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 8vw, 9rem); padding: var(--space) var(--pad); border-bottom: 1px solid var(--line); }
.quiet-section { color: var(--paper-light); background: var(--forest); }
.quiet-section .eyebrow { color: #d9957f; }
.theme-callout { padding: var(--space) var(--pad); text-align: center; }
.theme-callout h2 { max-width: 22ch; margin-right: auto; margin-left: auto; }
.share-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; padding: var(--space) var(--pad); color: var(--paper-light); background: var(--ink); }
.share-actions { display: flex; flex-wrap: wrap; align-content: center; gap: 0.75rem; }
.share-panel .share-actions a, .share-panel .share-actions button { color: var(--paper-light); border-color: rgba(255,255,255,0.35); }
.share-status { flex-basis: 100%; min-height: 1.7rem; }
.contact-band { display: grid; grid-template-columns: 1fr 1fr; padding: var(--space) var(--pad); gap: 3rem; }

.book-detail { display: grid; grid-template-columns: minmax(16rem, 0.75fr) minmax(0, 1.25fr); align-items: center; gap: clamp(3rem, 9vw, 10rem); padding: var(--space) var(--pad); }
.book-detail figure { width: min(24rem, 100%); margin: 0 auto; }
.byline a { font-weight: 700; }
.book-actions, .guide-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin: 2rem 0; }
.translation-link { margin-top: 1.5rem; }
.audiobook { padding: var(--space) var(--pad); color: var(--paper-light); background: var(--forest); }
.audiobook-layout { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(2rem, 7vw, 7rem); min-width: 0; }
.audiobook-controls { min-width: 0; }
.audiobook audio { display: block; width: 100%; max-width: 100%; }
.audiobook select { max-width: 100%; }
.audiobook-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.8rem; margin-top: 1.5rem; }
.audiobook-actions select { min-height: 3.25rem; padding: 0 0.75rem; color: var(--ink); background: var(--paper-light); border: 1px solid var(--line); font: inherit; }
.audiobook .button-quiet { color: var(--paper-light); border-color: rgba(255,255,255,0.35); }

.reading-notes { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--line); gap: 1px; }
.reading-notes article { padding: clamp(2rem, 5vw, 4.5rem); background: var(--paper-light); }
.reading-notes h2 { font-size: 2rem; }
.usage-statement { max-width: 70rem; }

.link-list, .principle-list { padding: 0; list-style: none; }
.link-list { padding: 0 var(--pad) var(--space); }
.link-list ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.link-list li { border-bottom: 1px solid var(--line); }
.link-list a { display: block; padding: 1.3rem 0; font: clamp(1.4rem, 3vw, 2.7rem)/1.2 var(--display); }
.principle-list li { padding: 0.8rem 0 0.8rem 2rem; border-bottom: 1px solid var(--line); }
.principle-list li::before { margin-left: -2rem; margin-right: 1rem; color: var(--clay); content: "—"; }
.themes-list { padding: 0 var(--pad) var(--space); }
.theme-row { display: grid; grid-template-columns: 5rem 1fr; gap: 2rem; padding: clamp(2rem, 5vw, 4rem) 0; border-bottom: 1px solid var(--line); }
.theme-row > span { color: var(--clay); font-weight: 750; }
.theme-row p { max-width: 58ch; color: var(--muted); }

.reader-guide { padding: 0 var(--pad) var(--space); }
.reader-guide fieldset { margin: 0; padding: 0; border: 0; }
.reader-guide legend { margin-bottom: 1.5rem; font: clamp(1.7rem, 3vw, 2.7rem)/1.2 var(--display); }
.reader-guide label { display: flex; min-height: 4.25rem; align-items: center; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--line); cursor: pointer; }
.reader-guide input { width: 1.4rem; height: 1.4rem; accent-color: var(--clay); }
.guide-result { margin-top: 2rem; padding: clamp(1.5rem, 4vw, 3rem); background: var(--paper-light); border-left: 5px solid var(--clay); }
.guide-result h2 { font-size: 2rem; }
.book-questions { padding: var(--space) var(--pad); background: var(--paper-light); }
.book-questions > h2 { max-width: 28ch; margin-bottom: 2rem; }
.book-question-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.book-question-grid article { padding: clamp(1.25rem, 3vw, 2.25rem); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.book-question-grid h3 { margin: 0 0 0.75rem; font: 1.25rem/1.2 var(--display); }
.book-question-grid p { margin: 0; }
.resource-list { padding: 0 var(--pad) var(--space); }
.resource-book { display: grid; grid-template-columns: minmax(9rem, 14rem) 1fr; align-items: center; gap: clamp(2rem, 6vw, 6rem); padding: 3rem 0; border-bottom: 1px solid var(--line); }
.language-choice { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); }
.language-choice a { min-height: 16rem; display: flex; flex-direction: column; justify-content: space-between; padding: clamp(2rem, 5vw, 5rem); background: var(--paper-light); text-decoration: none; }
.language-choice span { color: var(--clay); font-weight: 750; letter-spacing: 0.12em; text-transform: uppercase; }
.language-choice strong { font: clamp(1.8rem, 4vw, 3.5rem)/1.1 var(--display); }

.site-footer { display: grid; grid-template-columns: 0.6fr 1.4fr; align-items: end; gap: 3rem; padding: clamp(3rem, 7vw, 6rem) var(--pad); color: var(--paper-light); background: var(--ink); }
.site-footer p { max-width: 70ch; margin: 0; color: rgba(255,255,255,0.68); font-size: 0.78rem; }

@media (max-width: 900px) {
  .book-grid, .reading-notes, .book-question-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .site-header { grid-template-columns: auto 1fr auto; gap: 0.7rem; }
  .site-nav { grid-column: 1 / -1; grid-row: 2; flex-wrap: wrap; justify-content: flex-start; gap: 0.35rem 1rem; padding-bottom: 1rem; }
  .language-switch { grid-column: 3; grid-row: 1; }
  .js .menu-toggle { display: block; grid-column: 2; grid-row: 1; justify-self: end; }
  .js .site-nav { position: absolute; top: 100%; right: var(--pad); left: var(--pad); display: grid; padding: 1rem; color: white; background: var(--ink); opacity: 0; pointer-events: none; transform: translateY(-0.5rem); visibility: hidden; }
  .js .site-nav.is-open { opacity: 1; pointer-events: auto; transform: none; visibility: visible; }
  .js .site-nav a { min-height: 3rem; display: flex; align-items: center; }
  .page-hero { min-height: 34rem; }
  .page-hero::after { opacity: 0.35; }
  .intro-block { align-items: flex-start; flex-direction: column; }
  .book-card, .book-detail, .split-section, .share-panel, .contact-band, .site-footer, .language-choice { grid-template-columns: 1fr; }
  .book-card { padding: 2rem var(--pad) 3rem; }
  .book-card img { max-width: 18rem; margin: 0 auto; }
  .reading-notes { display: block; }
  .audiobook-layout { grid-template-columns: 1fr; }
  .resource-book { grid-template-columns: 7rem 1fr; align-items: start; gap: 1.5rem; }
  .theme-row { grid-template-columns: 2.5rem 1fr; gap: 0.75rem; }
  .language-switch { font-size: 0.65rem; }
}

@media (max-width: 380px) {
  .site-header { padding-right: 0.75rem; padding-left: 0.75rem; }
  h1 { font-size: clamp(2.45rem, 13vw, 3.2rem); }
  .page-hero { min-height: 30rem; padding-top: 6.5rem; }
  .wordmark { width: 2.65rem; }
  .resource-book { grid-template-columns: 1fr; }
  .resource-book img { max-width: 12rem; }
  .book-actions .button, .guide-actions .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}


.writing-support { max-width: 1100px; margin: 36px auto; padding: clamp(24px, 5vw, 48px); background: #e9e2d5; border-radius: 16px; color: #26312e; }
.writing-support p { max-width: 65ch; }
.support-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; }
@media(max-width: 600px) { .writing-support { margin: 24px 16px; } }

.site-header { flex-wrap: wrap; } .app-toolbar { width: 100%; display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 12px; padding: 12px; background: #e9e2d5; border-radius: 10px; } .app-toolbar button { min-height: 44px; padding: 10px 18px; border: 1px solid #26312e; border-radius: 999px; background: #26312e; color: white; cursor: pointer; } .app-toolbar [data-app-status] { flex-basis: 100%; text-align: center; } .app-toolbar [data-app-status]:empty { display: none; } .large-reading { font-size: 125%; } .large-reading main p { font-size: 1.25rem; }

.app-toolbar { grid-column: 1 / -1; }