:root {
  --paper: #faf9f5;
  --paper-card: #fdfcf9;
  --ink: #1a1915;
  --brown-gray: #2e2b26;
  --char-brown: #4a4640;
  --slate-brown: #6b6760;
  --gray-brown: #918d85;
  --edge: #e3e0d8;
  --underline: #1a1915;
  --cta: #8b5e3c;
  --cta-soft: #f6f1eb;
  --soft: #f5f3ef;
  --link: #2b5ea7;
  --data: #2d6a4f;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
  color: var(--ink);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
  background: var(--paper);
  color: var(--ink);
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

a:hover {
  color: var(--link);
}

.site-shell {
  width: min(860px, calc(100% - 32px));
  max-width: 860px;
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--edge);
  background: rgba(250, 249, 245, 0.97);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 70px;
}

.brand {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.65rem;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--underline);
  text-decoration-thickness: 4px;
  text-underline-offset: 7px;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 16px;
  font-size: 0.92rem;
}

.site-nav a {
  text-decoration: none;
  border-bottom: 3px solid transparent;
  padding: 4px 0;
  color: var(--char-brown);
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
  border-color: var(--underline);
}

.page-main {
  padding: 28px 0 72px;
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0 0 34px;
  color: var(--slate-brown);
  font-size: 0.9rem;
}

.crumbs a {
  color: var(--char-brown);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(280px, 2fr);
  gap: 42px;
  align-items: start;
  padding: 36px 0 54px;
  border-bottom: 1px solid var(--edge);
}

.hero h1,
.page-title h1 {
  margin: 0 0 18px;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 700;
  font-size: clamp(2.55rem, 6vw, 5rem);
  line-height: 0.98;
  text-decoration: underline;
  text-decoration-thickness: 4px;
  text-underline-offset: 10px;
  letter-spacing: 0;
}

.page-title h1 {
  font-size: clamp(2.25rem, 5vw, 4rem);
}

.mission,
.page-title p,
.lead-line {
  margin: 0;
  color: var(--brown-gray);
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
}

.button,
button {
  font: inherit;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 18px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: var(--paper-card);
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
}

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

.button.cta {
  background: var(--cta);
  border-color: var(--cta);
  color: #fffaf5;
}

.button.cta:hover {
  background: var(--ink);
  border-color: var(--ink);
}

.feature-panel,
.doc-block {
  background: var(--paper-card);
  border: 1px solid var(--edge);
  padding: 22px;
}

.panel-title {
  margin: 0 0 16px;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.5rem;
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-underline-offset: 6px;
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.feature-list li {
  display: grid;
  gap: 4px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--edge);
}

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

.copy-code {
  justify-self: start;
  border: 1px solid var(--edge);
  border-radius: 2px;
  background: var(--soft);
  color: var(--char-brown);
  padding: 4px 7px;
  cursor: pointer;
}

.copy-code:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.mono,
code,
.notice-meta {
  font-family: "JetBrains Mono", Consolas, monospace;
}

.doc-section {
  padding: 50px 0 0;
}

.section-heading {
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 4px;
  font-family: "JetBrains Mono", Consolas, monospace;
  color: var(--slate-brown);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.section-heading h2,
.doc-block h2,
.article-body h2 {
  margin: 0;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  line-height: 1.1;
  text-decoration: underline;
  text-decoration-thickness: 4px;
  text-underline-offset: 8px;
}

.accordion {
  border-top: 1px solid var(--edge);
}

.accordion-item {
  border-bottom: 1px solid var(--edge);
}

.accordion-trigger {
  width: 100%;
  min-height: 58px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  padding: 14px 0;
  cursor: pointer;
  text-align: left;
}

.accordion-trigger:hover {
  background: var(--soft);
}

.trigger-mark {
  flex: 0 0 auto;
  font-size: 0.86rem;
  color: var(--slate-brown);
}

.accordion-panel {
  display: none;
  padding: 0 0 24px;
  color: var(--brown-gray);
}

.accordion-item.is-open .accordion-panel {
  display: block;
  animation: reveal 180ms ease-out;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.detail-grid {
  display: grid;
  gap: 12px;
  margin: 18px 0;
}

.detail-grid div {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--edge);
}

dt {
  color: var(--char-brown);
  font-weight: 700;
}

dd {
  margin: 0;
}

.text-link {
  color: var(--link);
  font-weight: 700;
}

.notice-list {
  border-top: 1px solid var(--edge);
}

.notice-row {
  padding: 22px 0;
  border-bottom: 1px solid var(--edge);
}

.notice-meta {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  color: var(--slate-brown);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.notice-row p {
  margin: 0 0 10px;
}

.notice-row strong,
.data-mark {
  color: var(--data);
  font-family: "JetBrains Mono", Consolas, monospace;
}

.page-title {
  padding: 10px 0 34px;
  border-bottom: 1px solid var(--edge);
}

.directory {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.directory a {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--edge);
  text-decoration: none;
}

.directory strong {
  font-size: 1.1rem;
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-underline-offset: 6px;
}

.directory span {
  color: var(--brown-gray);
}

.article-body {
  display: grid;
  gap: 26px;
  margin-top: 34px;
}

.article-body p {
  margin: 0;
}

.article-meta {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--edge);
  border-bottom: 1px solid var(--edge);
  color: var(--slate-brown);
}

.form-table {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.field-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--edge);
}

label {
  font-weight: 700;
  color: var(--char-brown);
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--edge);
  border-radius: 2px;
  background: var(--paper-card);
  color: var(--ink);
  padding: 10px 12px;
  font: inherit;
}

textarea {
  min-height: 168px;
  resize: vertical;
}

input:focus,
textarea:focus {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.form-note {
  color: var(--slate-brown);
  margin: 0;
  font-size: 0.92rem;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 8px;
}

.site-footer {
  border-top: 1px solid var(--edge);
  color: var(--slate-brown);
  padding: 24px 0;
  font-size: 0.9rem;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 2px;
  padding: 10px 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 50;
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100% - 24px, 860px);
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 16px 0;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 26px;
  }

  .detail-grid div,
  .field-row,
  .article-meta,
  .notice-meta {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .feature-panel,
  .doc-block {
    padding: 16px;
  }

  .form-actions {
    justify-content: stretch;
  }

  .form-actions .button {
    width: 100%;
  }
}