:root {
  --ink: #241c16;
  --paper: #f6f1e7;
  --brick: #8d3b32;
  --brass: #9a7044;
  --mist: #e7dfd2;
  --line: rgba(36, 28, 22, 0.16);
  --shadow: 0 18px 40px rgba(36, 28, 22, 0.12);
  --serif: "Fraunces", "Iowan Old Style", Palatino, "Palatino Linotype", serif;
  --sans: "Outfit", "Avenir Next", "Segoe UI", sans-serif;
  --pad: clamp(1rem, 3vw, 1.75rem);
  --wide: 74rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-bottom: 7rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.65;
  overflow-x: clip;
}

body.has-cookie {
  padding-bottom: 9.5rem;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

h1, h2, h3, p, figure, blockquote, ul, ol {
  margin: 0;
}

::selection {
  background: var(--brass);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--brick);
  outline-offset: 3px;
}

:focus:not(:focus-visible) {
  outline: none;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  z-index: 80;
  background: var(--brass);
  color: var(--ink);
  padding: 0.55rem 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.skip:focus {
  top: 0.75rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 3.25rem;
  padding: 0.45rem var(--pad);
  background: var(--paper);
  border-bottom: 1px solid var(--brass);
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  color: var(--ink);
  text-decoration: none;
}

.wordmark-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.45rem;
  letter-spacing: -0.03em;
  line-height: 1;
}

.wordmark-sub {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brick);
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--brass);
  background: var(--paper);
  color: var(--ink);
  padding: 0;
}

.menu-bars,
.menu-bars::before,
.menu-bars::after {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: var(--ink);
  position: relative;
  content: "";
}

.menu-bars::before,
.menu-bars::after {
  position: absolute;
  left: 0;
}

.menu-bars::before { top: -6px; }
.menu-bars::after { top: 6px; }

.menu-toggle[aria-expanded="true"] .menu-bars {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-bars::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-bars::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--paper);
  border-bottom: 1px solid var(--brass);
  padding: 0.4rem var(--pad) 1rem;
  flex-direction: column;
  gap: 0.15rem;
}

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

.nav a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
}

.nav a:hover {
  color: var(--brick);
}

.hero,
.section-inner,
.footer-inner {
  width: min(100% - (var(--pad) * 2), var(--wide));
  margin-inline: auto;
}

.hero {
  display: grid;
  gap: 1.75rem;
  padding-block: 2rem 2.75rem;
  align-items: end;
}

.eyebrow {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 0.75rem;
}

.hero h1,
.section-head h2,
.lecture h2,
.chains h2,
.method h2,
.memo h2,
.faq h2,
.contact-copy h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-optical-sizing: auto;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.hero h1 {
  font-size: clamp(2.15rem, 4.6vw + 1rem, 4.6rem);
  max-width: 12em;
  margin-bottom: 1rem;
}

.lede {
  font-size: 1.125rem;
  line-height: 1.6;
  max-width: 38rem;
  margin-bottom: 1.1rem;
}

.notice {
  border: 1px solid var(--brass);
  padding: 0.75rem 0.9rem;
  max-width: 38rem;
  margin-bottom: 1.25rem;
  font-size: 0.98rem;
  background: rgba(154, 112, 68, 0.08);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.9rem;
  padding: 0.65rem 1.1rem;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.0625rem;
  line-height: 1.2;
  color: var(--ink);
  cursor: pointer;
}

.btn-brass {
  background: var(--brass);
  color: var(--ink);
}

.btn-brass:hover {
  background: var(--brass);
  color: var(--ink);
  box-shadow: inset 0 -3px 0 var(--ink);
}

.btn-paper {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--brass);
}

.btn-paper:hover {
  background: var(--mist);
  color: var(--ink);
}

.hero-photo {
  background: var(--mist);
}

.hero-photo img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.hero-photo figcaption,
.caption {
  background: var(--brass);
  color: var(--ink);
  padding: 0.75rem 0.95rem;
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.4;
}

.band {
  background: var(--mist);
  border-block: 1px solid var(--brass);
}

.band .section-inner,
.lecture .section-inner,
.chains .section-inner,
.method .section-inner,
.memo .section-inner,
.faq .section-inner {
  padding-block: 2.75rem;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 1.75rem;
}

.section-head h2,
.lecture h2,
.chains h2,
.method h2,
.memo h2,
.faq h2,
.contact-copy h2 {
  font-size: clamp(2rem, 5vw, 3.15rem);
  margin-bottom: 0.8rem;
}

.section-head p,
.prose p,
.chains-copy p,
.method-list p,
.memo-intro,
.faq-intro,
.contact-copy p,
.dialog-body p,
.footer-inner p {
  margin-bottom: 0.9rem;
}

.strata {
  display: grid;
  gap: 1.25rem;
}

.stratum {
  background: var(--paper);
  padding: 1.15rem 1.1rem 1.3rem;
  border-top: 3px solid var(--brass);
  min-width: 0;
}

.stratum-index {
  display: block;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 2.1rem;
  line-height: 1;
  color: var(--brass);
  margin-bottom: 0.55rem;
}

.stratum h3,
.traverse h3,
.method-list h3,
.memo-item h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.45rem;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.55rem;
}

.stratum p,
.memo-item p,
.traverse p {
  font-size: 0.98rem;
  line-height: 1.55;
}

.lecture {
  background: var(--paper);
}

.prose p {
  max-width: 40rem;
}

.drop::first-letter {
  font-family: var(--serif);
  font-weight: 600;
  float: left;
  font-size: 3.6rem;
  line-height: 0.78;
  padding: 0.15rem 0.45rem 0 0;
  color: var(--brick);
}

.lecture-top,
.lecture-bottom,
.chains-intro,
.method-layout,
.contact-grid {
  display: grid;
  gap: 1.5rem;
}

.pull {
  font-family: var(--serif);
  font-weight: 500;
  font-optical-sizing: auto;
  font-size: clamp(1.55rem, 3.4vw, 2.35rem);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--brick);
  border-left: 3px solid var(--brass);
  padding: 0.2rem 0 0.2rem 1rem;
  margin: 2rem 0;
  max-width: 22em;
}

.frame {
  margin: 0;
  background: var(--mist);
}

.frame img {
  width: 100%;
  object-fit: cover;
}

.frame-tall img {
  aspect-ratio: 4 / 5;
}

.frame-wide img {
  aspect-ratio: 14 / 10;
}

.frame figcaption {
  padding: 0.7rem 0.2rem 0;
  font-size: 0.9rem;
  color: var(--ink);
  border-top: 0;
  background: transparent;
}

.lecture-bottom .frame figcaption,
.chains-intro .frame figcaption,
.method-layout .frame figcaption {
  padding-top: 0.65rem;
}

.traverses {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.traverse {
  background: var(--mist);
  padding: 1.2rem 1.15rem 1.3rem;
  border-top: 3px solid var(--brick);
}

.chains {
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.chain-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.75rem;
}

.chain-grid .frame {
  background: transparent;
}

.chain-grid img {
  width: 100%;
  object-fit: cover;
}

.chain-a img { aspect-ratio: 16 / 11; }
.chain-b img,
.chain-c img { aspect-ratio: 16 / 10; }

.chains-note {
  margin-top: 1.25rem;
  max-width: 40rem;
  font-size: 1.02rem;
}

.method {
  background: var(--mist);
}

.method-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 0.15rem;
  border-left: 2px solid var(--brass);
}

.method-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem 1rem;
  padding: 0 0 1.6rem 1rem;
}

.method-list li:last-child {
  padding-bottom: 0;
}

.method-num {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.7rem;
  line-height: 1;
  color: var(--brass);
}

.memo-list {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.4rem;
  list-style: none;
  padding: 0;
}

.memo-item {
  background: var(--mist);
  padding: 1rem 1rem 1.1rem;
  border-left: 3px solid var(--brass);
}

.memo-kicker {
  display: block;
  font-family: var(--serif);
  color: var(--brass);
  font-size: 1.35rem;
  margin-bottom: 0.25rem;
}

.faq .section-head,
.faq-list {
  max-width: 44rem;
}

.faq-list details {
  border-bottom: 1px solid var(--brass);
  padding: 0.85rem 0 1rem;
}

.faq-list details:first-child {
  border-top: 1px solid var(--brass);
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.08rem;
  line-height: 1.4;
  list-style: none;
  display: flex;
  gap: 0.7rem;
  align-items: baseline;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::before {
  content: "+";
  font-family: var(--serif);
  color: var(--brass);
  font-size: 1.4rem;
  line-height: 1;
  flex: 0 0 auto;
}

.faq-list details[open] summary::before {
  content: "–";
}

.faq-list details p {
  margin: 0.75rem 0 0.2rem 1.7rem;
}

.contact {
  background: var(--brick);
  color: var(--paper);
  padding-block: 2.75rem;
}

.contact-copy h2,
.contact-copy p,
.contact-copy .eyebrow {
  color: var(--paper);
}

.contact-copy .eyebrow {
  color: var(--paper);
}

.contact-copy p {
  max-width: 34rem;
  font-size: 1.05rem;
}

.card {
  background: var(--paper);
  color: var(--ink);
  padding: 1.25rem 1.1rem 1.35rem;
  box-shadow: var(--shadow);
}

.card h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.7rem;
  margin-bottom: 0.4rem;
}

.hint,
.field-note {
  font-size: 0.92rem;
  margin-bottom: 1rem;
}

.form-grid {
  display: grid;
  gap: 0.85rem;
}

label.field {
  display: grid;
  gap: 0.3rem;
  font-weight: 500;
  font-size: 0.95rem;
}

input,
select,
textarea {
  width: 100%;
  background: var(--paper);
  border: 1px solid var(--brass);
  padding: 0.7rem 0.75rem;
  border-radius: 0;
  min-height: 2.9rem;
}

textarea {
  min-height: 9rem;
  resize: vertical;
  line-height: 1.5;
}

.check {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.65rem;
  align-items: start;
  font-size: 0.95rem;
  font-weight: 400;
}

.check input {
  width: 1.15rem;
  height: 1.15rem;
  min-height: 0;
  margin-top: 0.2rem;
  accent-color: var(--brick);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.4rem;
}

.summary-text {
  width: 100%;
  min-height: 16rem;
  background: var(--mist);
  border: 1px solid var(--brass);
  padding: 0.8rem;
  white-space: pre-wrap;
}

.status {
  margin-top: 0.8rem;
  font-weight: 600;
}

.copy-status {
  min-height: 1.4em;
  font-weight: 500;
  margin-top: 0.35rem;
}

.site-footer {
  background: var(--paper);
  border-top: 1px solid var(--brass);
  padding-block: 2rem 2.4rem;
}

.footer-brand {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.6rem;
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
}

.footer-brand span {
  margin-right: 0.35rem;
}

.footer-year {
  color: var(--ink);
  margin-bottom: 1rem;
}

.footer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

dialog {
  position: fixed;
  inset: 0;
  margin: auto;
  height: fit-content;
  border: 0;
  padding: 0;
  background: transparent;
  width: min(42rem, calc(100vw - 1.25rem));
  max-height: min(86vh, 46rem);
  color: var(--ink);
  overflow: visible;
}

dialog[open] {
  display: block;
}

dialog::backdrop {
  background: rgba(36, 28, 22, 0.62);
}

.dialog-card {
  background: var(--paper);
  border-top: 6px solid var(--brick);
  max-height: min(86vh, 46rem);
  overflow: auto;
  padding: 1.1rem 1.1rem 1.4rem;
}

.dialog-head {
  position: sticky;
  top: -1.1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  padding: 0.2rem 0 0.8rem;
  margin: -0.15rem 0 0.6rem;
  background: var(--paper);
  z-index: 1;
}

.dialog-head h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.dialog-body p:last-child,
.dialog-body h3 {
  margin-bottom: 0.75rem;
}

.dialog-body h3 {
  font-family: var(--serif);
  font-size: 1.25rem;
  margin-top: 1.1rem;
}

.cookie {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem var(--pad) calc(0.85rem + env(safe-area-inset-bottom));
  background: var(--ink);
  color: var(--paper);
}

.cookie[hidden] {
  display: none;
}

.cookie p {
  margin: 0;
  flex: 1 1 16rem;
  font-size: 0.95rem;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

@media (min-width: 720px) {
  .strata {
    grid-template-columns: 1fr 1fr;
  }

  .memo-list {
    grid-template-columns: 1fr 1fr;
  }

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

  .lecture-top,
  .chains-intro,
  .method-layout,
  .contact-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 2rem;
  }

  .lecture-bottom {
    grid-template-columns: minmax(14rem, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
    gap: 2rem;
  }

  .chain-grid {
    grid-template-columns: 1.25fr 0.85fr;
    grid-template-rows: auto auto;
  }

  .chain-a {
    grid-row: 1 / span 2;
  }

  .chain-a img {
    aspect-ratio: 4 / 5;
    height: 100%;
  }

  .chain-b { grid-column: 2; grid-row: 1; }
  .chain-c { grid-column: 2; grid-row: 2; }
}

@media (min-width: 960px) {
  .menu-toggle {
    display: none;
  }

  .nav,
  .nav.is-open {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 1.25rem;
    border: 0;
    padding: 0;
    background: transparent;
  }

  .nav a {
    border: 0;
    padding: 0.25rem 0;
  }

  .hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 2.75rem;
    padding-block: 3rem 3.5rem;
    align-items: end;
  }

  .strata {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.8rem;
  }

  .memo-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .card {
    padding: 1.6rem 1.5rem 1.7rem;
  }
}

@media (max-width: 359px) {
  .hero h1 {
    font-size: 2.15rem;
  }

  .footer-actions .btn,
  .cookie-actions .btn,
  .form-actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .menu-bars::before,
  .menu-bars::after { transition: none; }
}