:root {
  color-scheme: light;
  --ink-950: #fff8f2;
  --ink-900: #fff8f2;
  --ink-850: #f8e7e1;
  --ink-700: #dabfc0;
  --ivory-100: #3a2230;
  --ivory-300: #765d69;
  --ivory-500: #765d69;
  --amber-300: #9d4b68;
  --amber-400: #863c56;
  --moss-300: #557563;
  --danger-300: #9a3f48;
  --content: 72rem;
  --reading: 46rem;
  --radius: 1.1rem;
  --shadow: 0 1rem 3rem rgb(118 93 105 / 8%);
}

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

html {
  background: var(--ink-950);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--ink-950);
  color: var(--ivory-100);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--amber-300);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--ivory-100);
}

a:focus-visible,
summary:focus-visible {
  border-radius: 0.3rem;
  outline: 0.18rem solid var(--amber-300);
  outline-offset: 0.25rem;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  border-radius: 0.6rem;
  background: var(--ivory-100);
  color: var(--ink-950);
  font-weight: 700;
  transform: translateY(-180%);
}

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

.site-header {
  border-bottom: 1px solid #dabfc0;
  background: #fff8f2;
  backdrop-filter: blur(1rem);
  -webkit-backdrop-filter: blur(1rem);
}

.header-inner,
.page-shell,
.site-footer {
  width: min(calc(100% - 2rem), var(--content));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  min-height: 4.25rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: env(safe-area-inset-top, 0);
}

.brand {
  color: var(--ivory-100);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-decoration: none;
}

.brand-mark {
  color: var(--amber-300);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav a {
  min-height: 2.75rem;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  color: var(--ivory-300);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  background: rgb(227 189 114 / 12%);
  color: var(--amber-300);
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 20rem);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
  padding-block: clamp(3rem, 7vw, 6.5rem) 5rem;
}

.reading-column {
  min-width: 0;
  max-width: var(--reading);
}

.hero {
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid rgb(244 239 227 / 14%);
}

.eyebrow,
.draft-badge {
  color: var(--amber-300);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.draft-badge {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  margin-bottom: 1.25rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid rgb(227 189 114 / 28%);
  border-radius: 999px;
  background: rgb(227 189 114 / 8%);
  letter-spacing: 0.06em;
  text-transform: none;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ivory-100);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC",
    "Hiragino Sans GB", sans-serif;
  line-height: 1.18;
}

h1 {
  max-width: 12ch;
  font-size: clamp(2.65rem, 7vw, 5.4rem);
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
  letter-spacing: -0.025em;
}

h3 {
  margin-bottom: 0.55rem;
  font-size: 1.03rem;
}

.lede {
  max-width: 38rem;
  margin: 1.4rem 0 0;
  color: var(--ivory-300);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
  line-height: 1.65;
}

.meta-line {
  margin: 1.2rem 0 0;
  color: var(--ivory-500);
  font-size: 0.88rem;
}

.prose-section {
  padding-block: clamp(2.2rem, 5vw, 3.5rem);
  border-bottom: 1px solid rgb(244 239 227 / 11%);
}

.prose-section p,
.prose-section ul,
.prose-section ol {
  margin-block: 0.85rem 0;
  color: var(--ivory-300);
}

.prose-section strong {
  color: var(--ivory-100);
}

.prose-section li + li {
  margin-top: 0.55rem;
}

.plain-list {
  padding-left: 1.2rem;
}

.callout {
  margin-block: 1.5rem;
  padding: 1.2rem 1.25rem;
  border-left: 0.22rem solid var(--amber-300);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgb(227 189 114 / 7%);
}

.callout.is-caution {
  border-left-color: var(--danger-300);
  background: rgb(231 167 159 / 7%);
}

.callout p:first-child {
  margin-top: 0;
}

.callout p:last-child,
.callout ul:last-child {
  margin-bottom: 0;
}

.data-list {
  margin-top: 1.4rem;
  border-top: 1px solid rgb(244 239 227 / 15%);
}

.data-item {
  display: grid;
  grid-template-columns: minmax(8rem, 0.75fr) minmax(0, 1.6fr);
  gap: 1rem 2rem;
  padding-block: 1.25rem;
  border-bottom: 1px solid rgb(244 239 227 / 11%);
}

.data-item dt {
  color: var(--ivory-100);
  font-weight: 750;
}

.data-item dd {
  margin: 0;
  color: var(--ivory-300);
}

.page-aside {
  position: sticky;
  top: 2rem;
  padding: 1.35rem;
  border: 1px solid rgb(244 239 227 / 12%);
  border-radius: var(--radius);
  background: #f8e7e1;
  box-shadow: var(--shadow);
}

.page-aside h2 {
  margin-bottom: 0.85rem;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-aside nav {
  display: grid;
  gap: 0.1rem;
}

.page-aside a {
  padding: 0.45rem 0;
  color: var(--ivory-300);
  font-size: 0.9rem;
  text-decoration: none;
}

.page-aside a:hover {
  color: var(--amber-300);
}

.aside-note {
  margin: 1.1rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid rgb(244 239 227 / 11%);
  color: var(--ivory-500);
  font-size: 0.78rem;
  line-height: 1.6;
}

.faq-list {
  margin-top: 1.2rem;
  border-top: 1px solid rgb(244 239 227 / 15%);
}

details {
  border-bottom: 1px solid rgb(244 239 227 / 12%);
}

summary {
  position: relative;
  padding: 1.15rem 2rem 1.15rem 0;
  color: var(--ivory-100);
  cursor: pointer;
  font-weight: 750;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  position: absolute;
  top: 1.15rem;
  right: 0.2rem;
  color: var(--amber-300);
  content: "+";
  font-size: 1.2rem;
  line-height: 1;
}

details[open] summary::after {
  content: "–";
}

.answer {
  padding: 0 0 1.25rem;
  color: var(--ivory-300);
}

.answer p,
.answer ul,
.answer ol {
  margin-top: 0;
}

.contact-block {
  margin-top: 1.3rem;
  padding: 1.35rem;
  border: 1px solid rgb(227 189 114 / 20%);
  border-radius: var(--radius);
  background: rgb(227 189 114 / 6%);
}

.contact-grid {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 0.5rem 1.25rem;
  margin: 1rem 0 0;
}

.contact-grid dt {
  color: var(--ivory-500);
}

.contact-grid dd {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--ivory-100);
  font-weight: 700;
}

.todo {
  color: var(--danger-300);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.88em;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 2rem calc(2rem + env(safe-area-inset-bottom, 0));
  border-top: 1px solid rgb(244 239 227 / 10%);
  color: var(--ivory-500);
  font-size: 0.82rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1rem;
}

.footer-links a {
  color: var(--ivory-300);
}

@media (max-width: 52rem) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .page-aside {
    position: static;
    grid-row: auto;
    box-shadow: none;
  }
}

@media (max-width: 36rem) {
  .header-inner,
  .page-shell,
  .site-footer {
    width: min(calc(100% - 1.25rem), var(--content));
  }

  .header-inner {
    min-height: 3.8rem;
  }

  .brand {
    font-size: 1rem;
  }

  .site-nav a {
    padding-inline: 0.55rem;
    font-size: 0.84rem;
  }

  .data-item {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }

  .contact-grid dd + dt {
    margin-top: 0.7rem;
  }

  .site-footer {
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  :root {
    color-scheme: light;
  }

  body {
    background: #fff;
    color: #111;
  }

  .site-header,
  .page-aside,
  .draft-badge {
    display: none;
  }

  .page-shell {
    display: block;
    width: 100%;
    padding: 0;
  }

  .reading-column {
    max-width: none;
  }

  h1,
  h2,
  h3,
  .prose-section strong,
  .data-item dt {
    color: #111;
  }

  .lede,
  .meta-line,
  .prose-section p,
  .prose-section li,
  .data-item dd,
  .answer,
  .site-footer {
    color: #333;
  }

  a {
    color: #111;
  }
}