:root {
  color-scheme: light;
  --paper: #eee7da;
  --paper-light: #f7f2e9;
  --paper-dark: #dfd4c2;
  --ink: #102232;
  --ink-soft: #33424b;
  --navy: #0a2134;
  --navy-light: #16374d;
  --brass: #a16d36;
  --brass-bright: #c59859;
  --rust: #9d4939;
  --line: rgba(16, 34, 50, 0.24);
  --line-light: rgba(238, 231, 218, 0.22);
  --display: Baskerville, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --text: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --ui: "Avenir Next", Avenir, "Century Gothic", "Trebuchet MS", sans-serif;
  --shell: 88rem;
  --gutter: clamp(1.25rem, 4vw, 4.5rem);
  --ease: cubic-bezier(0.22, 0.7, 0.25, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 0 49.9%, rgba(16, 34, 50, 0.035) 50%, transparent 50.1%),
    radial-gradient(circle at 16% 4%, rgba(255, 255, 255, 0.75), transparent 29rem),
    var(--paper);
  font-family: var(--text);
  font-size: 1.05rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  z-index: 20;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.2;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.17'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }

::selection { color: var(--paper-light); background: var(--rust); }
:focus-visible { outline: 3px solid var(--rust); outline-offset: 4px; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: 0.7rem 1rem;
  transform: translateY(-160%);
  color: var(--paper-light);
  background: var(--ink);
  font-family: var(--ui);
  font-weight: 700;
}

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

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  min-height: 5.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-inline: var(--gutter);
  border-bottom: 1px solid var(--line);
  background: rgba(238, 231, 218, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  min-width: 14rem;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand img { width: 11rem; height: auto; }

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2.7rem);
  margin-left: auto;
  font-family: var(--ui);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.desktop-nav a, .language-link { position: relative; padding-block: 2rem; text-decoration: none; }
.desktop-nav a::after, .language-link::after {
  position: absolute;
  right: 0;
  bottom: 1.45rem;
  left: 0;
  height: 1px;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  background: var(--rust);
  transition: transform 220ms var(--ease);
}
.desktop-nav a:hover::after, .language-link:hover::after { transform: scaleX(1); transform-origin: left; }

.header-tools { display: flex; align-items: center; gap: 1.2rem; }
.language-link { font-family: var(--ui); font-size: 0.68rem; font-weight: 800; letter-spacing: 0.14em; text-decoration: none; }
.mobile-menu { display: none; }

.hero {
  position: relative;
  min-height: calc(100svh - 5.5rem);
  display: grid;
  grid-template-columns: minmax(3rem, 0.14fr) minmax(19rem, 1.05fr) minmax(20rem, 0.95fr);
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.coordinate-rail {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding-block: 2rem;
  border-right: 1px solid var(--line);
  font-family: var(--ui);
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  writing-mode: vertical-rl;
}

.hero-copy { z-index: 2; max-width: 48rem; padding: clamp(5rem, 10vw, 9rem) var(--gutter); }
.kicker { margin: 0 0 1.3rem; color: var(--rust); font-family: var(--ui); font-size: 0.68rem; font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; }

h1, h2, h3 { font-family: var(--display); font-weight: 400; }
h1 { max-width: 10ch; margin: 0; font-size: clamp(3.4rem, 7vw, 7.6rem); letter-spacing: -0.055em; line-height: 0.88; text-wrap: balance; }
h1 em { color: var(--rust); font-weight: 400; }
.hero-intro { max-width: 41rem; margin: 2rem 0 0; color: var(--ink-soft); font-size: clamp(1.1rem, 1.7vw, 1.4rem); line-height: 1.55; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.4rem 2rem; margin-top: 2.3rem; }

.button {
  min-height: 3.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.35rem;
  border: 1px solid var(--ink);
  font-family: var(--ui);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 180ms, background 180ms, transform 180ms;
}
.button:hover { transform: translateY(-2px); }
.button-dark { color: var(--paper-light); background: var(--ink); }
.button-dark:hover { background: var(--rust); border-color: var(--rust); }
.text-link { font-family: var(--ui); font-size: 0.76rem; font-weight: 750; letter-spacing: 0.08em; text-underline-offset: 0.35em; text-decoration-thickness: 1px; }
.text-link span { display: inline-block; margin-left: 0.4rem; transition: transform 180ms; }
.text-link:hover span { transform: translate(0.2rem, 0.2rem); }

.instrument {
  position: relative;
  width: min(48vw, 42rem);
  aspect-ratio: 1;
  justify-self: center;
  margin-right: -12%;
  color: var(--brass);
}
.instrument-ring { position: absolute; border: 1px solid currentColor; border-radius: 50%; }
.ring-outer { inset: 0; border-width: 2px; box-shadow: inset 0 0 0 1.5rem rgba(161, 109, 54, 0.04); }
.ring-outer::before, .ring-outer::after {
  position: absolute; inset: -0.6rem; content: ""; border: 1px dashed rgba(16, 34, 50, 0.33); border-radius: inherit;
}
.ring-outer::after { inset: 1.6rem; border-style: dotted; }
.ring-middle { inset: 16%; }
.ring-inner { inset: 36%; border-color: var(--rust); }
.instrument-axis { position: absolute; top: 50%; left: 7%; width: 86%; height: 1px; background: currentColor; }
.axis-diagonal { transform: rotate(-42deg); }
.instrument-star { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); color: var(--rust); font-size: 2.4rem; }
.instrument-word { position: absolute; top: 10%; left: 50%; transform: translateX(-50%); font-family: var(--ui); font-size: 0.65rem; font-weight: 800; letter-spacing: 0.34em; }
.instrument-number { position: absolute; right: 8%; bottom: 16%; color: rgba(16, 34, 50, 0.12); font-family: var(--display); font-size: clamp(5rem, 12vw, 10rem); line-height: 1; }
.hero-folio { position: absolute; right: var(--gutter); bottom: 1.25rem; margin: 0; font-family: var(--ui); font-size: 0.58rem; font-weight: 800; letter-spacing: 0.18em; }

.section { position: relative; max-width: var(--shell); margin-inline: auto; padding: clamp(6rem, 11vw, 11rem) var(--gutter); }
.section-index { position: absolute; top: 2.2rem; right: var(--gutter); left: var(--gutter); display: flex; justify-content: space-between; padding-top: 0.7rem; border-top: 1px solid var(--line); font-family: var(--ui); font-size: 0.58rem; font-weight: 800; letter-spacing: 0.19em; }
.section h2, .contact h2 { margin: 0; font-size: clamp(2.6rem, 5.6vw, 5.5rem); letter-spacing: -0.045em; line-height: 0.98; text-wrap: balance; }

.maison { display: grid; grid-template-columns: minmax(18rem, 0.95fr) minmax(20rem, 1.05fr); gap: clamp(3rem, 9vw, 9rem); }
.section-heading h2 { max-width: 12ch; }
.section-copy { padding-top: 3.2rem; }
.section-copy p { max-width: 42rem; margin: 0 0 1.4rem; }
.section-copy .lead { margin-bottom: 2.2rem; color: var(--rust); font-family: var(--display); font-size: clamp(1.55rem, 2.7vw, 2.3rem); line-height: 1.28; }

.catalogue { max-width: none; color: var(--paper-light); background: var(--navy); }
.catalogue::before { position: absolute; inset: 0; content: ""; opacity: 0.18; background: repeating-linear-gradient(115deg, transparent 0 5rem, rgba(197, 152, 89, 0.14) 5rem calc(5rem + 1px)); }
.catalogue > * { position: relative; z-index: 1; width: min(100%, calc(var(--shell) - 2 * var(--gutter))); margin-inline: auto; }
.section-index.light { border-color: var(--line-light); }
.catalogue .kicker { color: var(--brass-bright); }
.catalogue-intro h2 { max-width: 13ch; }

.book-feature { display: grid; grid-template-columns: minmax(17rem, 0.72fr) minmax(21rem, 1.28fr); gap: clamp(3rem, 9vw, 9rem); align-items: center; margin-top: clamp(4rem, 8vw, 8rem); }
.book-visual { margin: 0; }
.book-cover { position: relative; width: min(100%, 25rem); aspect-ratio: 6 / 9; overflow: hidden; border: 1px solid rgba(197, 152, 89, 0.44); box-shadow: 1.6rem 1.8rem 0 rgba(197, 152, 89, 0.11), 0 2.5rem 5rem rgba(0, 0, 0, 0.35); }
.book-cover img { width: 100%; height: 100%; object-fit: cover; }
.book-cover::after { position: absolute; inset: 0; content: ""; background: linear-gradient(180deg, rgba(3, 12, 26, 0.72), transparent 42%, rgba(3, 12, 26, 0.08)); }
.book-cover--complete::after { display: none; }
.book-cover--pending { display: flex; flex-direction: column; justify-content: space-between; gap: 2rem; padding: 10% 8%; color: var(--ink); background: var(--paper); border-color: var(--brass-bright); text-align: center; }
.book-cover--pending::after { display: none; }
.cover-status, .cover-placeholder-author, .cover-placeholder-edition { font-family: var(--ui); font-size: 0.6rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
.cover-status { align-self: center; margin: 0; padding-bottom: 0.8rem; border-bottom: 1px solid var(--line); color: var(--rust); }
.cover-placeholder-author { display: block; margin-bottom: 1.5rem; }
.cover-placeholder-title strong { display: block; font-family: var(--display); font-size: clamp(1.8rem, 3.4vw, 3.2rem); font-weight: 400; letter-spacing: -0.035em; line-height: 1.08; }
.cover-placeholder-edition { color: var(--ink-soft); }
.book-visual figcaption { max-width: 25rem; margin-top: 2rem; padding-top: 0.8rem; border-top: 1px solid var(--line-light); color: rgba(247, 242, 233, 0.58); font-family: var(--ui); font-size: 0.62rem; letter-spacing: 0.08em; }
.book-meta { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-bottom: 3rem; }
.book-meta span, .edition-list span { padding: 0.46rem 0.65rem; border: 1px solid var(--line-light); font-family: var(--ui); font-size: 0.56rem; font-weight: 800; letter-spacing: 0.12em; }
.book-number { margin: 0 0 0.8rem; color: var(--brass-bright); font-family: var(--ui); font-size: 0.62rem; font-weight: 800; letter-spacing: 0.18em; }
.book-copy h3 { max-width: 11ch; margin: 0; color: #fff4cf; font-size: clamp(3rem, 6vw, 6.2rem); letter-spacing: -0.055em; line-height: 0.88; }
.book-subtitle { max-width: 39rem; margin: 1.4rem 0 0; color: rgba(247, 242, 233, 0.72); font-style: italic; font-size: 1.12rem; }
.book-author { margin: 2rem 0; color: var(--brass-bright); font-family: var(--ui); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; }
.book-copy > p:not([class]) { max-width: 42rem; color: rgba(247, 242, 233, 0.78); font-size: 1.12rem; }
.edition-list { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 2.2rem; }
.availability { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--line-light); color: var(--brass-bright); font-family: var(--ui); font-size: 0.65rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }

.principles-heading { display: grid; grid-template-columns: 0.55fr 1.45fr; gap: 3rem; align-items: start; }
.principles-heading h2 { max-width: 14ch; }
.principles-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: clamp(4rem, 8vw, 7rem); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.principle { min-height: 20rem; padding: 2rem 1.8rem; border-right: 1px solid var(--line); }
.principle:first-child { padding-left: 0; }
.principle:last-child { padding-right: 0; border-right: 0; }
.principle > span { color: var(--rust); font-family: var(--ui); font-size: 0.58rem; font-weight: 800; letter-spacing: 0.15em; }
.principle h3 { margin: 4rem 0 1.3rem; font-size: 2rem; }
.principle p { margin: 0; color: var(--ink-soft); }

.contact { position: relative; min-height: 42rem; display: grid; grid-template-columns: 0.65fr 1.35fr; align-items: center; overflow: hidden; padding: clamp(5rem, 10vw, 9rem) var(--gutter); color: var(--paper-light); background: var(--rust); }
.contact-mark { display: grid; place-items: center; }
.contact-mark img { width: min(18rem, 62%); filter: brightness(0) invert(1); opacity: 0.72; }
.contact-copy { max-width: 59rem; }
.contact .kicker { color: var(--paper-light); opacity: 0.72; }
.contact h2 { max-width: 13ch; }
.email-link { display: inline-block; margin-top: 3rem; color: var(--paper-light); font-family: var(--display); font-size: clamp(1.35rem, 3vw, 2.45rem); text-decoration-thickness: 1px; text-underline-offset: 0.35em; overflow-wrap: anywhere; }
.submissions { max-width: 45rem; margin-top: 3rem; padding-top: 1.4rem; border-top: 1px solid rgba(247, 242, 233, 0.33); color: rgba(247, 242, 233, 0.74); }

.site-footer { display: grid; grid-template-columns: 1.1fr 1fr 1.4fr auto; gap: 1.5rem 3rem; align-items: center; padding: 2.4rem var(--gutter); color: rgba(247, 242, 233, 0.72); background: #061724; font-family: var(--ui); font-size: 0.6rem; letter-spacing: 0.08em; }
.site-footer p { margin: 0; }
.site-footer a { color: var(--paper-light); text-underline-offset: 0.3em; }
.footer-brand { display: flex; align-items: center; }
.footer-brand img { width: 12rem; height: auto; filter: brightness(0) invert(1); }

.js .reveal { opacity: 0; transform: translateY(1.35rem); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }
.js .principle.reveal:nth-child(2) { transition-delay: 80ms; }
.js .principle.reveal:nth-child(3) { transition-delay: 160ms; }
.js .principle.reveal:nth-child(4) { transition-delay: 240ms; }

@media (max-width: 70rem) {
  .desktop-nav { display: none; }
  .header-tools { margin-left: auto; }
  .mobile-menu { position: relative; display: block; }
  .mobile-menu summary { width: 2.8rem; height: 2.8rem; display: grid; place-content: center; gap: 0.38rem; border: 1px solid var(--line); cursor: pointer; list-style: none; }
  .mobile-menu summary::-webkit-details-marker { display: none; }
  .mobile-menu summary span { width: 1.05rem; height: 1px; display: block; background: var(--ink); transition: transform 180ms; }
  .mobile-menu[open] summary span:first-child { transform: translateY(0.19rem) rotate(45deg); }
  .mobile-menu[open] summary span:last-child { transform: translateY(-0.19rem) rotate(-45deg); }
  .mobile-menu nav { position: fixed; top: 5.5rem; right: 0; left: 0; display: grid; padding: 1rem var(--gutter) 1.4rem; border-bottom: 1px solid var(--line); background: var(--paper-light); box-shadow: 0 1rem 2rem rgba(16, 34, 50, 0.14); }
  .mobile-menu nav a { padding: 0.8rem 0; border-bottom: 1px solid var(--line); font-family: var(--ui); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.1em; text-decoration: none; text-transform: uppercase; }
  .mobile-menu nav a:last-child { border-bottom: 0; }
  .hero { grid-template-columns: 3rem 1.15fr 0.85fr; }
  .instrument { width: min(49vw, 34rem); margin-right: -30%; }
  .principles-grid { grid-template-columns: repeat(2, 1fr); }
  .principle:nth-child(2) { border-right: 0; }
  .principle:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .principle:first-child, .principle:nth-child(3) { padding-left: 0; }
  .principle:nth-child(2), .principle:last-child { padding-right: 0; }
  .site-footer { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 48rem) {
  body { font-size: 1rem; }
  .site-header { min-height: 4.75rem; }
  .brand { min-width: 0; }
  .brand img { width: 10rem; }
  .language-link { padding-block: 1.4rem; }
  .language-link::after { bottom: 1rem; }
  .mobile-menu nav { top: 4.75rem; }
  .hero { min-height: calc(100svh - 4.75rem); grid-template-columns: 1fr; align-items: end; }
  .coordinate-rail { position: absolute; z-index: 3; top: 0; right: 0; bottom: 0; width: 2.25rem; padding-block: 1rem; border-right: 0; border-left: 1px solid var(--line); }
  .hero-copy { padding: 17rem calc(var(--gutter) + 1.2rem) 5rem var(--gutter); }
  .instrument { position: absolute; top: -8rem; right: -9rem; width: 27rem; opacity: 0.57; }
  h1 { font-size: clamp(3.25rem, 15vw, 5rem); }
  .hero-intro { font-size: 1.08rem; }
  .hero-folio { display: none; }
  .section { padding-top: 7.5rem; }
  .maison, .book-feature, .principles-heading, .contact { grid-template-columns: 1fr; }
  .section-copy { padding-top: 0; }
  .section h2, .contact h2 { font-size: clamp(2.75rem, 12vw, 4.4rem); }
  .catalogue-intro h2 { max-width: 11ch; }
  .book-feature { gap: 4rem; }
  .book-cover { width: min(88%, 22rem); margin-inline: auto; }
  .book-visual figcaption { width: min(88%, 22rem); margin-inline: auto; }
  .book-copy h3 { font-size: clamp(3.2rem, 14vw, 5rem); }
  .principles-heading { gap: 0; }
  .principles-grid { grid-template-columns: 1fr; }
  .principle, .principle:first-child, .principle:nth-child(2), .principle:nth-child(3), .principle:last-child { min-height: 0; padding: 2rem 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .principle:last-child { border-bottom: 0; }
  .principle h3 { margin-top: 1.5rem; }
  .contact { padding-block: 6rem; }
  .contact-mark { position: absolute; right: -4rem; bottom: -4rem; opacity: 0.16; }
  .contact-mark img { width: 18rem; }
  .site-footer { grid-template-columns: 1fr; gap: 1rem; }
  .privacy-note { max-width: 30rem; }
}

@media (max-width: 25rem) {
  .site-header { gap: 0.6rem; }
  .header-tools { gap: 0.55rem; }
  .hero-actions { align-items: stretch; }
  .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition-duration: 0.01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}