:root {
  --navy: #041725;
  --navy-2: #08283c;
  --navy-3: #103d56;
  --gold: #c88d35;
  --gold-light: #f1cf88;
  --paper: #f1dfb9;
  --paper-light: #fff5df;
  --ink: #1f1a14;
  --muted: #705f4d;
  --burgundy: #421b1c;
  --green: #254b3d;
  --white: #fffaf0;
  --danger: #8d2924;
  --shadow: 0 18px 50px rgba(0, 0, 0, .28);
  --radius: 22px;
  --serif: "Iowan Old Style", Baskerville, "Palatino Linotype", Georgia, serif;
  --sans: "Avenir Next", "Segoe UI", system-ui, sans-serif;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 9.25rem;
}

body {
  margin: 0;
  min-width: 300px;
  padding-bottom: calc(4rem + env(safe-area-inset-bottom));
  overflow-x: hidden;
  background:
    radial-gradient(circle at 16% 8%, rgba(200, 141, 53, .12), transparent 24rem),
    linear-gradient(135deg, #051a2a, #020d16 72%);
  color: var(--paper-light);
  font-family: var(--sans);
  font-size: 1.05rem;
}

body.dialog-open {
  overflow: hidden;
}

body.font-large {
  font-size: 1.18rem;
}

body.font-huge {
  font-size: 1.32rem;
}

body.reading-night .parchment,
body.reading-night .essentials,
body.reading-night .sources {
  background: linear-gradient(155deg, #102b3d, #061824 72%);
  color: #fff5df;
}

body.reading-night .parchment h2,
body.reading-night .parchment h3,
body.reading-night .parchment h4,
body.reading-night .parchment .lead,
body.reading-night .parchment .dark-question,
body.reading-night .parchment .subsection-title,
body.reading-night .parchment .essential-list strong,
body.reading-night .parchment .glossary dt {
  color: #fff5df;
}

body.reading-night .parchment .concept-panel,
body.reading-night .parchment .conservation-box,
body.reading-night .parchment .critical-note,
body.reading-night .parchment .maps-grid article,
body.reading-night .parchment .authors-grid article,
body.reading-night .parchment .essential-list li,
body.reading-night .parchment .glossary div {
  border-color: rgba(241, 207, 136, .35);
  background: rgba(255, 255, 255, .07);
}

body.reading-night .parchment a {
  color: #ffe3a0;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid #ffe39f;
  outline-offset: 4px;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: .65rem;
  left: .65rem;
  padding: .65rem 1rem;
  border-radius: 999px;
  background: var(--gold-light);
  color: var(--navy);
  font-weight: 700;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.reading-progress {
  position: fixed;
  z-index: 1001;
  top: 0;
  left: 0;
  width: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), #ffe8aa);
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 5rem;
  padding: .7rem max(1rem, env(safe-area-inset-left)) .7rem max(1rem, env(safe-area-inset-right));
  border-bottom: 1px solid rgba(200, 141, 53, .55);
  background: rgba(4, 23, 37, .94);
  box-shadow: 0 12px 35px rgba(0, 0, 0, .26);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  min-width: max-content;
  color: var(--gold-light);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.8rem;
  height: 2.8rem;
  place-items: center;
  border: 1px solid var(--gold);
  border-radius: 50%;
  background: linear-gradient(145deg, #0b3048, #03111d);
  font-family: var(--serif);
  font-size: 1.85rem;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-family: var(--serif);
  font-size: 1.35rem;
  line-height: 1;
}

.active-title {
  flex: 1 1 18rem;
  min-width: 8rem;
  margin: 0;
  overflow: hidden;
  color: #d7c7a6;
  font-family: var(--serif);
  font-size: 1rem;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand small {
  margin-top: .1rem;
  color: #d7c7a6;
  font-size: .72rem;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: .25rem;
  width: 100%;
}

.main-nav a,
.nav-button,
.menu-toggle {
  min-height: 2.75rem;
  padding: .62rem .74rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--paper-light);
  text-decoration: none;
  cursor: pointer;
}

.main-nav a:hover,
.nav-button:hover,
.main-nav a.active {
  border-color: rgba(200, 141, 53, .6);
  background: rgba(200, 141, 53, .14);
  color: var(--gold-light);
}

.install-button {
  border-color: var(--gold);
  color: var(--gold-light);
}

.menu-toggle {
  display: none;
  margin-left: auto;
  border-color: rgba(200, 141, 53, .6);
}

.reading-control {
  min-width: 3rem;
  font-weight: 800;
}

.study-tools {
  position: sticky;
  z-index: 90;
  top: 5rem;
  display: flex;
  align-items: center;
  gap: .5rem;
  min-height: 3.45rem;
  padding: .45rem max(1rem, env(safe-area-inset-left));
  overflow-x: auto;
  border-bottom: 1px solid rgba(200, 141, 53, .38);
  background: rgba(6, 29, 47, .97);
  box-shadow: 0 8px 20px rgba(0, 0, 0, .2);
  scrollbar-width: thin;
}

.study-tools-label {
  flex: 0 0 auto;
  color: var(--gold-light);
  font-weight: 800;
}

.study-tools button {
  flex: 0 0 auto;
  min-height: 2.45rem;
  padding: .45rem .72rem;
  border: 1px solid rgba(241, 207, 136, .52);
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  color: var(--paper-light);
  cursor: pointer;
}

.study-tools button:hover {
  background: rgba(200, 141, 53, .18);
}

.study-tools .quiet-button {
  border-color: transparent;
  color: #ddc99e;
  text-decoration: underline;
}

.tool-count {
  display: inline-grid;
  min-width: 1.5rem;
  min-height: 1.5rem;
  margin-left: .25rem;
  padding: 0 .3rem;
  place-items: center;
  border-radius: 999px;
  background: var(--gold-light);
  color: var(--navy);
  font-size: .78rem;
}

.selection-status {
  flex: 0 0 auto;
  color: #cdbd9d;
  font-size: .85rem;
}

mark.study-highlight {
  padding: .04em .08em;
  border-radius: .18em;
  background: #ffe071;
  box-decoration-break: clone;
  color: #17110a;
  -webkit-box-decoration-break: clone;
}

body.notebook-open > main,
body.notebook-open > .site-footer {
  transition: margin-right .22s ease;
}

.cover-section {
  padding: clamp(1rem, 3vw, 2.4rem) 0 clamp(4rem, 8vw, 7rem);
}

.study-workspace {
  min-width: 0;
}

.lesson-column {
  min-width: 0;
}

.study-rail {
  min-width: 0;
}

.context-panel {
  min-height: 0;
  padding: .9rem;
  overflow-y: auto;
  border: 1px solid rgba(200, 141, 53, .48);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at top right, rgba(200, 141, 53, .2), transparent 18rem),
    linear-gradient(160deg, #08283c, #03131f 76%);
  box-shadow: var(--shadow);
  overscroll-behavior: contain;
}

.context-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: .75rem;
  margin-bottom: .75rem;
}

.context-heading h2 {
  margin: 0;
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  line-height: 1.08;
}

.context-heading > span {
  flex: 0 0 auto;
  max-width: 8rem;
  padding: .28rem .55rem;
  border: 1px solid rgba(241, 207, 136, .42);
  border-radius: 999px;
  color: #d7c7a6;
  font-size: .72rem;
  text-align: center;
}

.context-image-button {
  display: grid;
  width: 100%;
  min-height: 44px;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(241, 207, 136, .52);
  border-radius: 14px;
  background: #020d15;
  color: var(--gold-light);
  cursor: zoom-in;
}

.context-image-button img {
  display: block;
  width: 100%;
  max-height: 27vh;
  object-fit: contain;
  background: #020d15;
}

.context-image-button span {
  padding: .45rem .6rem;
  border-top: 1px solid rgba(241, 207, 136, .32);
  font-size: .82rem;
  font-weight: 700;
}

.context-description {
  margin: .75rem 0;
  color: #e7dcc2;
  font-size: .88rem;
  line-height: 1.5;
}

.context-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .35rem;
}

.context-gallery button {
  min-height: 44px;
  padding: .4rem .25rem;
  border: 1px solid rgba(241, 207, 136, .38);
  border-radius: 10px;
  background: rgba(255, 255, 255, .05);
  color: var(--paper-light);
  font-size: .76rem;
  cursor: pointer;
}

.context-gallery button[aria-pressed="true"] {
  border-color: var(--gold-light);
  background: rgba(200, 141, 53, .23);
  color: var(--gold-light);
}

.cover-frame {
  position: relative;
  width: min(941px, calc(100vw - 1rem));
  margin: 0 auto;
  overflow: hidden;
  border: 2px solid var(--gold);
  border-radius: 6px;
  background: var(--navy);
  box-shadow: 0 28px 90px rgba(0, 0, 0, .55);
}

.cover-frame > img {
  display: block;
  width: 100%;
  height: auto;
}

.hotspot {
  position: absolute;
  display: block;
  border: 2px solid transparent;
  border-radius: 14px;
  background: transparent;
  transition: background-color .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.hotspot:hover,
.hotspot:focus-visible {
  border-color: #ffe4a3;
  outline: none;
  background: rgba(255, 213, 122, .2);
  box-shadow: inset 0 0 26px rgba(255, 225, 151, .3), 0 0 24px rgba(255, 213, 122, .55);
}

.hotspot::after {
  content: attr(aria-label);
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: calc(100% + .25rem);
  max-width: 18rem;
  padding: .35rem .65rem;
  border: 1px solid var(--gold);
  border-radius: 999px;
  background: var(--navy);
  color: var(--gold-light);
  font-size: .8rem;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%);
  white-space: nowrap;
}

.hotspot:hover::after,
.hotspot:focus-visible::after {
  opacity: 1;
}

.hs-home { left: 6.5%; top: 1.55%; width: 12.5%; height: 3.85%; }
.hs-percorso { left: 21.3%; top: 1.55%; width: 13%; height: 3.85%; }
.hs-testi { left: 36.2%; top: 1.55%; width: 10.5%; height: 3.85%; }
.hs-mappe { left: 49.1%; top: 1.55%; width: 11.5%; height: 3.85%; }
.hs-autori { left: 63.6%; top: 1.55%; width: 11.4%; height: 3.85%; }
.hs-enter { left: 78.1%; top: 1.25%; width: 18%; height: 4.45%; }
.hs-door-1 { left: 2.1%; top: 41.8%; width: 24%; height: 24.4%; }
.hs-door-2 { left: 27.3%; top: 41.8%; width: 22.8%; height: 24.4%; }
.hs-door-3 { left: 51%; top: 41.8%; width: 22.6%; height: 24.4%; }
.hs-door-4 { left: 74.5%; top: 41.8%; width: 23.2%; height: 24.4%; }
.hs-branch-1 { left: 2.8%; top: 69%; width: 10.8%; height: 10.1%; }
.hs-branch-2 { left: 15%; top: 69%; width: 10.8%; height: 10.1%; }
.hs-branch-3 { left: 27%; top: 69%; width: 10.8%; height: 10.1%; }
.hs-branch-4 { left: 39%; top: 69%; width: 10.8%; height: 10.1%; }
.hs-branch-5 { left: 51%; top: 69%; width: 10.8%; height: 10.1%; }
.hs-branch-6 { left: 63%; top: 69%; width: 10.8%; height: 10.1%; }
.hs-branch-7 { left: 75%; top: 69%; width: 10.8%; height: 10.1%; }
.hs-branch-8 { left: 87%; top: 69%; width: 10.4%; height: 10.1%; }
.hs-bridge-1 { left: 2%; top: 80%; width: 47%; height: 10.9%; }
.hs-bridge-2 { left: 51%; top: 80%; width: 47%; height: 10.9%; }

.cover-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(941px, calc(100vw - 1rem));
  margin: 1rem auto 0;
  padding: .8rem 1rem;
  border: 1px solid rgba(200, 141, 53, .55);
  border-radius: 18px;
  background: rgba(4, 23, 37, .82);
}

.cover-actions p {
  margin: 0;
}

.primary-button,
.map-button,
.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: 2.9rem;
  padding: .65rem 1rem;
  border: 1px solid #e7bd69;
  border-radius: 999px;
  background: linear-gradient(180deg, #f0cf8b, #bd8033);
  box-shadow: 0 7px 18px rgba(0, 0, 0, .18);
  color: #181006;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.primary-button:hover,
.map-button:hover,
.download-link:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.paper {
  background:
    radial-gradient(circle at top left, rgba(200, 141, 53, .18), transparent 22rem),
    linear-gradient(180deg, var(--paper-light), var(--paper));
  color: var(--ink);
}

.text-index {
  width: min(941px, calc(100vw - 1rem));
  margin: 1rem auto 0;
  padding: clamp(1rem, 3vw, 1.75rem);
  border: 1px solid rgba(200, 141, 53, .7);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.text-index h2 {
  margin: 0 0 .9rem;
  color: var(--navy);
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.journey-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.journey-index a {
  display: flex;
  align-items: center;
  gap: .65rem;
  min-height: 3rem;
  padding: .55rem .7rem;
  border: 1px solid rgba(86, 61, 30, .25);
  border-radius: 14px;
  background: rgba(255, 255, 255, .3);
  color: var(--navy);
  font-weight: 700;
  text-decoration: none;
}

.journey-index a:hover {
  background: rgba(200, 141, 53, .16);
}

.journey-index span {
  display: grid;
  flex: 0 0 auto;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold-light);
}

.chapter {
  position: relative;
  padding: clamp(4.5rem, 9vw, 8rem) max(1rem, env(safe-area-inset-left));
}

.chapter-inner {
  width: min(1180px, 100%);
  margin: 0 auto;
}

.chapter-inner.narrow {
  width: min(860px, 100%);
}

.chapter h2,
.chapter h3,
.chapter h4,
.bridges h2,
.bridges h3 {
  font-family: var(--serif);
}

.chapter-heading {
  display: flex;
  align-items: flex-end;
  gap: 1.1rem;
  margin-bottom: 2rem;
}

.chapter-heading h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(2.6rem, 7vw, 5.4rem);
  line-height: .92;
}

.chapter-number {
  margin: 0;
  color: rgba(4, 23, 37, .16);
  font-family: var(--serif);
  font-size: clamp(5rem, 15vw, 10rem);
  font-weight: 700;
  line-height: .65;
}

.kicker {
  margin: 0 0 .45rem;
  color: var(--gold);
  font-size: .9rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.lead {
  max-width: 72rem;
  margin: 0 auto 2rem;
  color: #3b2b1d;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.7vw, 1.8rem);
  line-height: 1.45;
}

.parchment {
  background:
    linear-gradient(90deg, rgba(111, 77, 38, .035) 1px, transparent 1px),
    radial-gradient(circle at 12% 15%, rgba(200, 141, 53, .22), transparent 20rem),
    linear-gradient(180deg, #f9edcf, #e8d0a2);
  background-size: 18px 100%, auto, auto;
  color: var(--ink);
}

.prologue {
  border-top: 1px solid rgba(200, 141, 53, .45);
  border-bottom: 1px solid rgba(200, 141, 53, .45);
  background:
    linear-gradient(rgba(4, 23, 37, .86), rgba(4, 23, 37, .9)),
    radial-gradient(circle at center, rgba(200, 141, 53, .3), transparent 35%);
  text-align: center;
}

.prologue h2,
.conclusion h2 {
  margin: 0 auto 1.5rem;
  color: var(--gold-light);
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: .98;
}

.generating-question {
  max-width: 920px;
  margin: 0 auto 2.5rem;
  color: var(--white);
  font-family: var(--serif);
  font-size: clamp(1.7rem, 4vw, 2.7rem);
  font-weight: 600;
  line-height: 1.25;
}

.dark-question {
  color: var(--navy);
}

.prologue-grid {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 1.25rem;
  text-align: left;
}

.prologue-grid > * {
  margin: 0;
  padding: clamp(1.2rem, 3vw, 1.8rem);
  border: 1px solid rgba(200, 141, 53, .5);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .05);
  line-height: 1.7;
}

.prologue-grid blockquote {
  background: linear-gradient(145deg, rgba(200, 141, 53, .18), rgba(255, 255, 255, .03));
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: 1.4rem;
}

.two-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.concept-panel,
.conservation-box,
.critical-note {
  padding: clamp(1.1rem, 3vw, 1.6rem);
  border: 1px solid rgba(80, 53, 21, .3);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .35);
}

.concept-panel h3,
.conservation-box h3,
.critical-note h3 {
  margin: 0 0 .7rem;
  color: var(--navy);
  font-size: 1.65rem;
}

.key-list {
  display: grid;
  gap: .45rem;
  margin: 0;
  padding-left: 1.2rem;
  line-height: 1.55;
}

.conservation-box {
  margin-top: 1.2rem;
  border-left: 6px solid var(--gold);
  background: rgba(255, 250, 235, .72);
}

.conservation-box p,
.critical-note p {
  margin: 0;
  line-height: 1.65;
}

.apparatus {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .7rem;
  margin: 2rem 0 1rem;
}

.apparatus > div {
  padding: 1rem;
  border: 1px solid rgba(80, 53, 21, .25);
  border-radius: 16px;
  background: rgba(255, 255, 255, .24);
}

.apparatus h3 {
  margin: 0 0 .4rem;
  color: var(--burgundy);
  font-size: 1.22rem;
}

.apparatus p {
  margin: 0;
  font-size: .96rem;
  line-height: 1.5;
}

.history-novel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
  margin: 1.5rem 0;
}

.history-novel-grid article {
  padding: 1rem;
  border: 1px solid rgba(241, 207, 136, .35);
  border-radius: 16px;
  background: rgba(255, 255, 255, .06);
}

.history-novel-grid h3 {
  margin: 0 0 .5rem;
  color: var(--gold-light);
  font-size: 1.35rem;
}

.history-novel-grid p {
  margin: 0;
  line-height: 1.6;
}

.comparison-table-wrap {
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid rgba(241, 207, 136, .45);
  border-radius: 16px;
  background: rgba(0, 0, 0, .18);
  overscroll-behavior-inline: contain;
}

.comparison-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  color: var(--paper-light);
}

.comparison-table caption {
  padding: .9rem;
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 700;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: .8rem;
  border-top: 1px solid rgba(241, 207, 136, .28);
  border-right: 1px solid rgba(241, 207, 136, .22);
  line-height: 1.45;
  text-align: left;
  vertical-align: top;
}

.comparison-table th {
  color: var(--gold-light);
}

.comparison-table thead th {
  background: rgba(200, 141, 53, .16);
}

.next-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  width: max-content;
  max-width: 100%;
  min-height: 3rem;
  margin: 2rem auto 0;
  padding: .7rem 1.15rem;
  border-bottom: 1px solid var(--gold);
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 700;
  text-decoration: none;
}

.dark-link {
  color: var(--navy);
}

.midnight {
  background:
    radial-gradient(circle at 80% 20%, rgba(32, 84, 111, .38), transparent 28rem),
    linear-gradient(155deg, #071e30, #020c14 70%);
}

.light-heading h2 {
  color: var(--gold-light);
}

.light-heading .chapter-number {
  color: rgba(241, 207, 136, .16);
}

.light-lead {
  color: #eadfc8;
}

.fracture-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.fracture-card {
  overflow: hidden;
  border: 1px solid rgba(200, 141, 53, .55);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .05);
}

.fracture-card summary {
  display: flex;
  align-items: center;
  gap: .7rem;
  min-height: 4rem;
  padding: .8rem 1rem;
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 700;
  cursor: pointer;
}

.fracture-card summary span {
  display: grid;
  flex: 0 0 auto;
  width: 2.7rem;
  height: 2.7rem;
  place-items: center;
  border: 1px solid var(--gold);
  border-radius: 50%;
}

.fracture-card > div {
  padding: 0 1rem 1rem;
  line-height: 1.65;
}

.fracture-card .logic {
  padding: .75rem;
  border-left: 4px solid var(--gold);
  background: rgba(200, 141, 53, .11);
}

.light-map-button {
  background: transparent;
  color: var(--gold-light);
}

.dark-apparatus > div {
  border-color: rgba(200, 141, 53, .35);
  background: rgba(255, 255, 255, .04);
}

.dark-apparatus h3 {
  color: var(--gold-light);
}

.world-network {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.world-network article {
  position: relative;
  min-height: 14rem;
  padding: 1.2rem;
  overflow: hidden;
  border: 1px solid rgba(75, 51, 23, .28);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .36);
}

.world-network article > span {
  position: absolute;
  right: .7rem;
  top: -.7rem;
  color: rgba(4, 23, 37, .12);
  font-family: var(--serif);
  font-size: 7rem;
}

.world-network h3 {
  position: relative;
  margin: 0 0 .7rem;
  color: var(--navy);
  font-size: 2rem;
}

.world-network p {
  position: relative;
  line-height: 1.6;
}

.critical-note {
  margin-top: 1.2rem;
  border-color: rgba(107, 36, 34, .35);
  background: rgba(107, 36, 34, .08);
}

.burgundy {
  background:
    radial-gradient(circle at 15% 12%, rgba(200, 141, 53, .2), transparent 22rem),
    linear-gradient(155deg, #4d2021, #1d0c0d 72%);
}

.literature-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 1rem;
}

.literature-grid article {
  grid-column: span 2;
  padding: 1.2rem;
  border: 1px solid rgba(241, 207, 136, .38);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .055);
}

.literature-grid article:nth-last-child(-n+2) {
  grid-column: span 3;
}

.literature-grid h3 {
  margin: 0 0 .6rem;
  color: var(--gold-light);
  font-size: 1.6rem;
}

.literature-grid p {
  margin: 0;
  line-height: 1.62;
}

.large-quote,
.thesis-box,
.final-formula {
  margin: 2rem 0;
  padding: clamp(1.2rem, 4vw, 2rem);
  border: 1px solid rgba(241, 207, 136, .55);
  border-left: 6px solid var(--gold);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .06);
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.4;
}

.atlas {
  background:
    linear-gradient(rgba(4, 23, 37, .86), rgba(4, 23, 37, .92)),
    radial-gradient(circle at 50% 30%, #25516a, #061725);
}

.country-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .55rem;
  margin-bottom: 1rem;
}

.country-tabs button {
  min-height: 3.3rem;
  padding: .7rem;
  border: 1px solid rgba(200, 141, 53, .55);
  border-radius: 999px;
  background: rgba(255, 255, 255, .04);
  color: var(--gold-light);
  cursor: pointer;
}

.country-tabs button[aria-selected="true"] {
  background: linear-gradient(180deg, #f0cf8b, #bd8033);
  color: #181006;
  font-weight: 800;
}

.country-panel {
  display: grid;
  grid-template-columns: .8fr 1.4fr .8fr;
  gap: 1rem;
  min-height: 15rem;
  padding: clamp(1.2rem, 4vw, 2rem);
  border: 1px solid rgba(200, 141, 53, .55);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .05);
}

.country-panel[hidden] {
  display: none;
}

.country-panel > * {
  margin: 0;
}

.country-question {
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 700;
  line-height: 1.2;
}

.country-panel h3 {
  margin: 0 0 .5rem;
  color: var(--gold-light);
  font-size: 1.6rem;
}

.country-panel div p,
.country-panel aside {
  line-height: 1.65;
}

.country-panel aside {
  padding: 1rem;
  border-left: 4px solid var(--gold);
  background: rgba(200, 141, 53, .12);
}

.italy-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.italy-flow article {
  padding: 1.15rem;
  border: 1px solid rgba(75, 51, 23, .3);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .33);
}

.italy-flow span {
  color: var(--burgundy);
  font-weight: 800;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.italy-flow h3 {
  margin: .35rem 0 .55rem;
  color: var(--navy);
  font-size: 1.5rem;
}

.italy-flow p {
  margin: 0;
  line-height: 1.55;
}

.thesis-box {
  border-color: rgba(4, 23, 37, .32);
  background: var(--navy);
  color: var(--gold-light);
}

.library {
  background:
    linear-gradient(rgba(25, 13, 7, .87), rgba(25, 13, 7, .92)),
    radial-gradient(circle at 30% 10%, #67441d, #160d08 65%);
}

.text-lab {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.text-lab article {
  display: flex;
  flex-direction: column;
  padding: 1.2rem;
  border: 1px solid rgba(241, 207, 136, .45);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 248, 229, .11), rgba(255, 255, 255, .035));
}

.text-lab h3 {
  margin: 0;
  color: var(--gold-light);
  font-size: 1.8rem;
}

.text-lab h4 {
  margin: .1rem 0 .7rem;
  color: #f5e4c4;
  font-family: var(--serif);
  font-size: 1.2rem;
}

.text-lab p {
  line-height: 1.55;
}

.text-lab a {
  width: fit-content;
  margin-top: auto;
  color: var(--gold-light);
  font-weight: 700;
}

.text-meta {
  margin: 0 0 .55rem;
  color: #d6a95d;
  font-size: .84rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.source-note,
.copyright-note {
  color: #d8c6a6;
  font-size: .92rem;
}

.source-excerpt {
  margin: .75rem 0;
  padding: 1rem;
  border-left: 4px solid var(--gold);
  background: rgba(0, 0, 0, .2);
  color: #fff4d9;
  font-family: var(--serif);
  font-size: 1.12rem;
  line-height: 1.55;
}

.translation {
  margin: -.25rem 0 .8rem;
  color: #ead8b7;
  font-size: .9rem;
}

.text-workshop {
  margin: .3rem 0 1rem;
  padding-top: .65rem;
  border-top: 1px solid rgba(241, 207, 136, .25);
}

.text-workshop p {
  margin: .4rem 0;
}

.copyright-note {
  margin-top: 1rem;
}

.maps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.maps-grid article {
  display: flex;
  min-height: 12rem;
  flex-direction: column;
  padding: 1.1rem;
  border: 1px solid rgba(75, 51, 23, .3);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .32);
}

.maps-grid h3 {
  margin: 0 0 .4rem;
  color: var(--navy);
  font-size: 1.45rem;
}

.maps-grid p {
  margin: 0 0 1rem;
}

.maps-grid button {
  width: fit-content;
  min-height: 2.6rem;
  margin-top: auto;
  padding: .5rem .85rem;
  border: 1px solid var(--navy);
  border-radius: 999px;
  background: var(--navy);
  color: var(--gold-light);
  cursor: pointer;
}

.subsection-title {
  margin: 3rem 0 .6rem;
  color: var(--navy);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
}

.illustrated-maps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.illustrated-maps button {
  overflow: hidden;
  padding: 0;
  border: 1px solid rgba(75, 51, 23, .38);
  border-radius: var(--radius);
  background: var(--navy);
  color: var(--gold-light);
  cursor: pointer;
}

.illustrated-maps img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2.35;
  object-fit: cover;
  object-position: top;
}

.illustrated-maps span {
  display: block;
  min-height: 3.2rem;
  padding: .8rem;
  font-weight: 700;
}

.timeline-section {
  background:
    radial-gradient(circle at 75% 20%, rgba(200, 141, 53, .18), transparent 25rem),
    linear-gradient(150deg, #183b36, #071b1c 70%);
}

.timeline-controls {
  display: flex;
  gap: .55rem;
  padding: .5rem 0 1rem;
  overflow-x: auto;
  scroll-snap-type: x proximity;
}

.timeline-controls button {
  flex: 0 0 auto;
  min-width: 6rem;
  min-height: 3.2rem;
  padding: .6rem .75rem;
  border: 1px solid rgba(241, 207, 136, .45);
  border-radius: 999px;
  background: rgba(255, 255, 255, .04);
  color: var(--gold-light);
  font-weight: 800;
  cursor: pointer;
  scroll-snap-align: start;
}

.timeline-controls button.active {
  background: linear-gradient(180deg, #f0cf8b, #bd8033);
  color: #181006;
}

.timeline-detail {
  min-height: 14rem;
  padding: clamp(1.2rem, 4vw, 2rem);
  border: 1px solid rgba(241, 207, 136, .5);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .055);
}

.timeline-year {
  margin: 0;
  color: var(--gold);
  font-family: var(--serif);
  font-size: 3rem;
  font-weight: 700;
}

.timeline-detail h3 {
  margin: .2rem 0 .7rem;
  color: var(--gold-light);
  font-size: 2rem;
}

.timeline-detail p:last-child {
  max-width: 75ch;
  line-height: 1.7;
}

.authors-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.authors-grid article {
  padding: 1.1rem;
  border: 1px solid rgba(75, 51, 23, .3);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .33);
}

.authors-grid h3 {
  margin: 0;
  color: var(--navy);
  font-size: 1.55rem;
}

.authors-grid p {
  line-height: 1.55;
}

.authors-grid span {
  color: var(--burgundy);
  font-size: .88rem;
  font-weight: 800;
}

.conclusion {
  background:
    linear-gradient(rgba(4, 23, 37, .8), rgba(4, 23, 37, .92)),
    radial-gradient(circle at 50% 20%, #31566e, #04121e 68%);
}

.legacy-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: .8rem;
}

.legacy-grid article {
  padding: 1rem;
  border: 1px solid rgba(241, 207, 136, .35);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .04);
}

.legacy-grid h3,
.legacy-grid h4 {
  margin: 0 0 .35rem;
  color: var(--gold-light);
  font-size: 1.25rem;
}

.legacy-grid h4 {
  margin-top: 1rem;
  color: #e7a899;
}

.legacy-grid p {
  margin: 0;
  line-height: 1.5;
}

.final-formula {
  text-align: center;
}

.essential-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem 1.2rem;
  counter-reset: essential;
  margin: 0;
  padding: 0;
  list-style: none;
}

.essential-list li {
  position: relative;
  min-height: 5rem;
  padding: 1rem 1rem 1rem 4rem;
  border: 1px solid rgba(75, 51, 23, .28);
  border-radius: 18px;
  background: rgba(255, 255, 255, .3);
  line-height: 1.55;
  counter-increment: essential;
}

.essential-list li::before {
  content: counter(essential);
  position: absolute;
  left: 1rem;
  top: .9rem;
  display: grid;
  width: 2.2rem;
  height: 2.2rem;
  place-items: center;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold-light);
  font-weight: 800;
}

.glossary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .6rem;
}

.glossary details {
  border: 1px solid rgba(75, 51, 23, .28);
  border-radius: 14px;
  background: rgba(255, 255, 255, .28);
}

.glossary summary {
  min-height: 3rem;
  padding: .7rem .9rem;
  color: var(--navy);
  font-weight: 800;
  cursor: pointer;
}

.glossary p {
  margin: 0;
  padding: 0 .9rem .9rem;
  line-height: 1.55;
}

.quiz-section {
  background:
    radial-gradient(circle at 20% 10%, rgba(200, 141, 53, .2), transparent 24rem),
    linear-gradient(155deg, #30203e, #100b16 75%);
}

.quiz-intro {
  padding: 1.2rem;
  border: 1px solid rgba(241, 207, 136, .4);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .045);
}

.quiz-intro p {
  margin: 0 0 1rem;
  font-size: 1.2rem;
}

.quiz-form {
  display: grid;
  gap: 1rem;
}

.quiz-question {
  margin: 0;
  padding: 1.1rem;
  border: 1px solid rgba(241, 207, 136, .4);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .045);
}

.quiz-question legend {
  padding: 0 .4rem;
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 700;
}

.quiz-options {
  display: grid;
  gap: .55rem;
  margin-top: .7rem;
}

.quiz-options label {
  display: flex;
  align-items: flex-start;
  gap: .65rem;
  min-height: 3rem;
  padding: .7rem;
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 14px;
  cursor: pointer;
}

.quiz-options label:hover {
  background: rgba(255, 255, 255, .06);
}

.quiz-options input {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: .15rem;
}

.quiz-options label.correct {
  border-color: #91c8a2;
  background: rgba(91, 163, 112, .22);
}

.quiz-options label.wrong {
  border-color: #e59b8a;
  background: rgba(170, 64, 48, .22);
}

.quiz-feedback {
  margin: .75rem 0 0;
  padding: .7rem;
  border-left: 4px solid var(--gold);
  background: rgba(200, 141, 53, .1);
  line-height: 1.55;
}

.quiz-result {
  margin-top: 1rem;
  color: var(--gold-light);
}

.result-summary {
  padding: 1rem;
  border: 1px solid rgba(241, 207, 136, .45);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .055);
}

.result-summary strong {
  font-family: var(--serif);
  font-size: 1.55rem;
}

.recovery-list {
  display: grid;
  gap: .8rem;
  margin-top: 1rem;
}

.recovery-card {
  padding: 1rem;
  border-left: 5px solid #e2a04a;
  border-radius: 0 16px 16px 0;
  background: rgba(255, 255, 255, .06);
}

.recovery-card h3 {
  margin: 0 0 .45rem;
  color: var(--gold-light);
  font-size: 1.2rem;
}

.recovery-card p {
  margin: .4rem 0;
  line-height: 1.5;
}

.recovery-card a {
  display: inline-block;
  margin-top: .35rem;
  color: #ffe3a0;
  font-weight: 800;
}

.retry-wrong {
  margin-top: 1rem;
}

.bridges {
  padding: clamp(4rem, 8vw, 7rem) max(1rem, env(safe-area-inset-left));
  background: #071724;
}

.bridges h2 {
  margin: 0 0 2rem;
  color: var(--gold-light);
  font-size: clamp(2.7rem, 7vw, 5rem);
}

.bridge-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.bridge {
  padding: clamp(1.3rem, 4vw, 2.2rem);
  border: 1px solid var(--gold);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 100% 0, rgba(200, 141, 53, .28), transparent 18rem),
    linear-gradient(145deg, #f5e7c7, #dcc08e);
  color: var(--ink);
}

.bridge.leopardi {
  background:
    radial-gradient(circle at 100% 0, rgba(49, 86, 110, .3), transparent 18rem),
    linear-gradient(145deg, #e8dfc8, #c6b88f);
}

.bridge-label {
  color: var(--burgundy);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.bridge h3 {
  margin: .3rem 0 .8rem;
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3rem);
}

.bridge p {
  line-height: 1.65;
}

.keywords {
  font-weight: 700;
}

.sources h2 {
  margin: 0 0 1rem;
  color: var(--navy);
  font-size: clamp(2.5rem, 6vw, 4rem);
}

.sources li {
  margin: .55rem 0;
}

.download-link {
  margin-top: 1rem;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem max(1rem, env(safe-area-inset-left)) calc(1.25rem + env(safe-area-inset-bottom));
  border-top: 1px solid rgba(200, 141, 53, .5);
  background: #020d15;
}

.study-dock {
  position: fixed;
  z-index: 450;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  min-height: calc(3.65rem + env(safe-area-inset-bottom));
  padding: .4rem max(.5rem, env(safe-area-inset-right)) calc(.4rem + env(safe-area-inset-bottom)) max(.5rem, env(safe-area-inset-left));
  border-top: 1px solid rgba(200, 141, 53, .65);
  background: rgba(3, 18, 29, .96);
  box-shadow: 0 -10px 30px rgba(0, 0, 0, .32);
  backdrop-filter: blur(12px);
}

.study-dock a {
  display: grid;
  min-height: 44px;
  padding: .45rem .6rem;
  place-items: center;
  border-right: 1px solid rgba(200, 141, 53, .24);
  color: var(--gold-light);
  font-size: .86rem;
  font-weight: 750;
  text-align: center;
  text-decoration: none;
}

.study-dock a:last-child {
  border-right: 0;
}

.site-footer p {
  margin: 0;
}

.site-footer div {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

.site-footer a,
.site-footer button {
  border: 0;
  background: transparent;
  color: var(--gold-light);
  text-decoration: underline;
  cursor: pointer;
}

dialog {
  max-width: none;
  max-height: none;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
}

dialog::backdrop {
  background: rgba(0, 0, 0, .82);
  backdrop-filter: blur(5px);
}

.map-dialog,
.image-dialog {
  width: min(1200px, 96vw);
  height: min(900px, 94vh);
}

.dialog-shell {
  display: flex;
  height: 100%;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--gold);
  border-radius: var(--radius);
  background: var(--navy);
  box-shadow: 0 30px 90px rgba(0, 0, 0, .65);
}

.dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .9rem 1rem;
  border-bottom: 1px solid rgba(200, 141, 53, .5);
}

.dialog-header h2 {
  margin: 0;
  color: var(--gold-light);
  font-family: var(--serif);
  font-size: 1.7rem;
}

.dialog-header > button {
  display: grid;
  flex: 0 0 auto;
  width: 2.8rem;
  height: 2.8rem;
  place-items: center;
  border: 1px solid var(--gold);
  border-radius: 50%;
  background: transparent;
  color: var(--gold-light);
  font-size: 1.5rem;
  cursor: pointer;
}

.map-toolbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  padding: .6rem;
  border-bottom: 1px solid rgba(200, 141, 53, .25);
}

.map-toolbar button {
  min-width: 2.8rem;
  min-height: 2.6rem;
  padding: .4rem .7rem;
  border: 1px solid rgba(200, 141, 53, .55);
  border-radius: 999px;
  background: rgba(255, 255, 255, .05);
  color: var(--gold-light);
  cursor: pointer;
}

.map-toolbar output {
  min-width: 4rem;
  text-align: center;
}

.map-viewport,
.image-viewport {
  flex: 1;
  overflow: auto;
  overscroll-behavior: contain;
}

.map-content {
  display: grid;
  width: max(100%, 900px);
  min-height: 100%;
  padding: clamp(1rem, 4vw, 2rem);
  place-items: center;
  transform-origin: top left;
}

.map-image-figure {
  width: min(1100px, 100%);
  margin: 0;
  padding: 1rem;
  border: 1px solid rgba(200, 141, 53, .45);
  border-radius: var(--radius);
  background: #020d15;
}

.map-image-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.map-image-figure figcaption {
  padding: .75rem .25rem .1rem;
  color: var(--gold-light);
  font-size: .92rem;
  text-align: center;
}

.concept-map {
  width: min(1000px, 100%);
  padding: 1.5rem;
  border: 1px solid rgba(200, 141, 53, .45);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at top left, rgba(200, 141, 53, .18), transparent 20rem),
    linear-gradient(180deg, #f7e9c8, #e4c997);
  color: var(--ink);
}

.map-node,
.map-center {
  display: flex;
  min-height: 5rem;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: .8rem;
  border: 1px solid rgba(4, 23, 37, .35);
  border-radius: 16px;
  background: rgba(255, 255, 255, .5);
  text-align: center;
}

.map-node strong,
.map-center strong {
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.35rem;
}

.map-node span,
.map-center span {
  margin-top: .25rem;
}

.map-node.source,
.map-node.outcome,
.map-center {
  border-color: var(--gold);
  background: var(--navy);
  color: var(--gold-light);
}

.map-node.source strong,
.map-node.outcome strong,
.map-center strong {
  color: var(--gold-light);
}

.map-node.process {
  background: rgba(200, 141, 53, .18);
}

.map-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
}

.map-row.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.map-arrow {
  padding: .55rem;
  color: var(--burgundy);
  font-size: 1.35rem;
  font-weight: 800;
  text-align: center;
}

.radial-map .map-center,
.network-map .map-center {
  width: min(28rem, 100%);
  margin: 1rem auto;
}

.image-viewport {
  display: grid;
  padding: 1rem;
  place-items: start center;
  background: #01080d;
}

.image-viewport img {
  max-width: none;
  width: min(1055px, 100%);
  height: auto;
}

.notebook-panel {
  position: fixed;
  z-index: 500;
  top: 0;
  right: 0;
  width: min(390px, 100vw);
  height: 100dvh;
  visibility: hidden;
  background: #f2dfb5;
  box-shadow: -24px 0 60px rgba(0, 0, 0, .45);
  color: var(--ink);
  opacity: 0;
  transform: translateX(105%);
  transition: transform .22s ease, opacity .22s ease, visibility 0s linear .22s;
}

.notebook-panel.open {
  visibility: visible;
  opacity: 1;
  transform: translateX(0);
  transition-delay: 0s;
}

.notebook-shell {
  display: flex;
  height: 100%;
  flex-direction: column;
  background: linear-gradient(180deg, #f4e3bd, #dcc18e);
}

.notebook-shell > .dialog-header {
  flex: 0 0 auto;
  background: var(--navy);
}

.notebook-content {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.notebook-shell label {
  display: block;
  margin-bottom: .45rem;
  color: var(--navy);
  font-weight: 800;
}

.notebook-shell textarea {
  width: 100%;
  min-height: 13rem;
  padding: 1rem;
  border: 1px solid rgba(4, 23, 37, .4);
  border-radius: 14px;
  background:
    repeating-linear-gradient(#fff9e9 0 31px, rgba(91, 118, 138, .2) 32px);
  color: var(--ink);
  line-height: 2rem;
  resize: vertical;
}

.save-status {
  color: var(--muted);
  font-size: .9rem;
}

.citation-box {
  margin: 1rem 0;
  padding: .85rem;
  border: 1px solid rgba(4, 23, 37, .28);
  border-radius: 16px;
  background: rgba(255, 250, 235, .58);
}

.citation-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
}

.citation-heading h3 {
  margin: 0;
  color: var(--navy);
  font-family: var(--serif);
  font-size: 1.3rem;
}

.citation-heading span {
  display: grid;
  min-width: 1.7rem;
  min-height: 1.7rem;
  padding: 0 .35rem;
  place-items: center;
  border-radius: 999px;
  background: var(--navy);
  color: var(--gold-light);
  font-size: .8rem;
  font-weight: 800;
}

.citation-help,
.citation-empty {
  color: var(--muted);
  font-size: .85rem;
  line-height: 1.45;
}

.citation-list {
  display: grid;
  gap: .6rem;
}

.citation-item {
  position: relative;
  margin: 0;
  padding: .75rem 2.2rem .75rem .75rem;
  border-left: 4px solid var(--gold);
  background: #fff7e4;
}

.citation-item blockquote {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  line-height: 1.45;
}

.citation-item cite {
  display: block;
  margin-top: .4rem;
  color: var(--muted);
  font-size: .8rem;
  font-style: normal;
}

.citation-remove {
  position: absolute;
  top: .35rem;
  right: .35rem;
  width: 1.7rem;
  height: 1.7rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--danger);
  cursor: pointer;
}

.notebook-actions {
  position: sticky;
  bottom: -.1rem;
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  padding: .65rem 0 .25rem;
  background: linear-gradient(180deg, rgba(232, 211, 167, 0), #e2c995 22%);
}

.notebook-actions button {
  min-height: 2.65rem;
  padding: .55rem .8rem;
  border: 1px solid var(--navy);
  border-radius: 999px;
  background: var(--navy);
  color: var(--gold-light);
  cursor: pointer;
}

.notebook-actions .danger-button {
  margin-left: auto;
  border-color: var(--danger);
  background: transparent;
  color: var(--danger);
}

@media (min-width: 900px) {
  .study-workspace {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(19rem, 1fr);
    align-items: start;
    gap: 1rem;
    padding: 1rem max(1rem, env(safe-area-inset-right)) 1rem max(1rem, env(safe-area-inset-left));
  }

  .lesson-column {
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .lesson-column .chapter,
  .lesson-column .bridges {
    padding-right: clamp(1rem, 3vw, 2.5rem);
    padding-left: clamp(1rem, 3vw, 2.5rem);
  }

  .lesson-column .chapter-heading h2 {
    font-size: clamp(2.2rem, 4.4vw, 4.5rem);
  }

  .lesson-column .apparatus,
  .lesson-column .italy-flow,
  .lesson-column .maps-grid,
  .lesson-column .world-network,
  .lesson-column .text-lab,
  .lesson-column .authors-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lesson-column .legacy-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lesson-column .history-novel-grid {
    grid-template-columns: 1fr;
  }

  .study-rail {
    position: sticky;
    top: 9.25rem;
    display: grid;
    grid-template-rows: minmax(15rem, 42%) minmax(20rem, 58%);
    gap: .75rem;
    height: calc(100dvh - 13.7rem);
  }

  .notebook-panel,
  .notebook-panel.open {
    position: static;
    z-index: auto;
    width: 100%;
    height: 100%;
    min-height: 0;
    visibility: visible;
    overflow: hidden;
    border: 1px solid rgba(200, 141, 53, .48);
    border-radius: var(--radius);
    opacity: 1;
    transform: none;
    transition: none;
  }

  .notebook-panel .notebook-shell {
    min-height: 0;
  }

  .notebook-panel .notebook-content {
    min-height: 0;
  }

  #notebookClose {
    display: none;
  }
}

.toast {
  position: fixed;
  z-index: 1000;
  bottom: calc(1rem + env(safe-area-inset-bottom));
  left: 50%;
  max-width: calc(100vw - 2rem);
  padding: .7rem 1rem;
  border: 1px solid var(--gold);
  border-radius: 999px;
  background: var(--navy);
  box-shadow: var(--shadow);
  color: var(--gold-light);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 1rem);
  transition: opacity .18s ease, transform .18s ease;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 1050px) {
  .main-nav a:nth-of-type(4),
  .main-nav a:nth-of-type(5) {
    display: none;
  }

  .apparatus,
  .italy-flow,
  .maps-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .world-network,
  .text-lab,
  .authors-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .legacy-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1200px) {
  .active-title {
    display: none;
  }
}

@media (max-width: 800px) {
  html {
    scroll-padding-top: 8rem;
  }

  .site-header {
    min-height: 4.35rem;
  }

  .study-tools {
    top: 4.35rem;
  }

  .study-workspace {
    display: block;
  }

  .study-rail {
    display: contents;
  }

  .context-panel {
    display: none;
  }

  .brand small {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
  }

  .main-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: .5rem;
    display: none;
    width: min(22rem, calc(100vw - 1rem));
    flex-direction: column;
    align-items: stretch;
    padding: .7rem;
    border: 1px solid rgba(200, 141, 53, .55);
    border-radius: 0 0 18px 18px;
    background: #041725;
    box-shadow: var(--shadow);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a,
  .nav-button,
  .main-nav a:nth-of-type(4),
  .main-nav a:nth-of-type(5) {
    display: block;
    width: 100%;
    text-align: left;
  }

  .hotspot::after {
    display: none;
  }

  .prologue-grid,
  .two-columns,
  .country-panel,
  .bridge-grid,
  .history-novel-grid {
    grid-template-columns: 1fr;
  }

  .fracture-grid {
    grid-template-columns: 1fr;
  }

  .country-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .country-panel {
    min-height: auto;
  }

  .literature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .literature-grid article,
  .literature-grid article:nth-last-child(-n+2) {
    grid-column: auto;
  }

  .illustrated-maps {
    grid-template-columns: 1fr;
  }

  .illustrated-maps img {
    aspect-ratio: 16 / 9;
  }

  .essential-list,
  .glossary {
    grid-template-columns: 1fr;
  }

  .map-content {
    width: max(100%, 740px);
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .study-dock a {
    padding-right: .25rem;
    padding-left: .25rem;
    font-size: .75rem;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 1rem;
  }

  .cover-section {
    padding-top: .5rem;
  }

  .cover-frame,
  .cover-actions,
  .text-index {
    width: calc(100vw - .5rem);
  }

  .cover-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .journey-index,
  .world-network,
  .text-lab,
  .authors-grid,
  .apparatus,
  .italy-flow,
  .maps-grid,
  .legacy-grid,
  .literature-grid {
    grid-template-columns: 1fr;
  }

  .chapter {
    padding: 4.5rem .8rem;
  }

  .chapter-heading {
    gap: .5rem;
  }

  .chapter-number {
    font-size: 4.3rem;
  }

  .country-tabs {
    grid-template-columns: 1fr;
  }

  .notebook-panel {
    width: 100vw;
  }

  .notebook-actions button,
  .notebook-actions .danger-button {
    width: 100%;
    margin-left: 0;
  }

  .map-dialog,
  .image-dialog {
    width: 100vw;
    height: 100dvh;
  }

  .dialog-shell {
    border-radius: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  .site-header,
  .study-tools,
  .notebook-panel,
  .cover-section,
  .map-button,
  .next-link,
  .site-footer,
  dialog,
  .toast {
    display: none !important;
  }

  body,
  .chapter,
  .bridges {
    background: #fff !important;
    color: #000 !important;
  }

  .chapter {
    padding: 1.5rem 0;
    break-inside: avoid;
  }
}