:root {
  --ink: #17212b;
  --muted: #5e6d78;
  --paper: #fffdf8;
  --field: #f4f7f5;
  --line: #d7dfd9;
  --green: #2f6f55;
  --green-dark: #214f3d;
  --gold: #9a6c25;
  --charcoal: #24313a;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(244, 247, 245, 0.92), rgba(255, 253, 248, 0.98) 360px),
    var(--paper);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.62;
}

a {
  color: var(--green-dark);
  text-underline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(215, 223, 217, 0.9);
  background: rgba(255, 253, 248, 0.94);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(1180px, calc(100% - 40px));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: grid;
  gap: 1px;
  color: var(--ink);
  text-decoration: none;
}

.brand strong {
  font-size: 17px;
  letter-spacing: 0;
}

.brand span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid #b9c6be;
  border-radius: 6px;
  padding: 9px 13px;
  background: rgba(255, 253, 248, 0.92);
  color: var(--ink);
  text-decoration: none;
  font-size: 13px;
  font-weight: 820;
}

.button.primary {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.button.copy {
  cursor: pointer;
  font: inherit;
}

main {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 42px 0 72px;
}

.reader-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 286px;
  gap: 28px;
  align-items: start;
}

.document {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.96);
  box-shadow: 0 22px 70px rgba(36, 49, 58, 0.1);
}

.doc-hero {
  padding: clamp(28px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  color: var(--gold);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
  letter-spacing: 0;
  line-height: 1.08;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 620;
}

h1 {
  max-width: 760px;
  margin-top: 12px;
  font-size: clamp(44px, 7vw, 76px);
}

.doc-intro {
  max-width: 780px;
  margin-top: 20px;
  color: #40515b;
  font-size: clamp(19px, 2.2vw, 25px);
}

.doc-body {
  padding: 10px clamp(24px, 5vw, 56px) 56px;
}

.doc-body section {
  padding: 34px 0 0;
}

.doc-body section + section {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.doc-body h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 43px);
}

.doc-body h3 {
  margin: 24px 0 10px;
  color: var(--green-dark);
  font-size: clamp(21px, 3vw, 29px);
}

.doc-body p,
.doc-body li {
  max-width: 790px;
  color: #25323b;
  font-size: 18px;
}

.doc-body p {
  margin: 0 0 18px;
}

.doc-body ul,
.doc-body ol {
  max-width: 790px;
  margin: 0 0 22px;
  padding-left: 24px;
}

.doc-body code {
  border-radius: 4px;
  background: #edf2ef;
  padding: 1px 4px;
  font-size: 0.92em;
}

.doc-body blockquote {
  max-width: 790px;
  margin: 26px 0;
  border-left: 6px solid var(--gold);
  border-radius: 0 8px 8px 0;
  background: #f8f2e8;
  padding: 20px 24px;
  color: #40515b;
}

.doc-body blockquote p {
  margin: 0;
  color: #40515b;
  font-size: 20px;
}

.doc-body pre {
  max-width: 790px;
  margin: 18px 0 28px;
  overflow: auto;
  border: 1px solid #d9d0c0;
  border-radius: 8px;
  background: #f2eadf;
  color: #2b2d2f;
  padding: 20px 22px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 15px;
  line-height: 1.6;
  white-space: pre-wrap;
}

.doc-body pre code {
  background: transparent;
  padding: 0;
}

.doc-body .table-scroll {
  max-width: 100%;
  margin: 18px 0 28px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.doc-body table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  background: var(--paper);
  font-size: 16px;
  line-height: 1.45;
}

.doc-body th,
.doc-body td {
  border-bottom: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

.doc-body th {
  background: #edf2ef;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 850;
}

.doc-body tbody tr:last-child td {
  border-bottom: 0;
}

.doc-body td {
  color: #25323b;
}

.toc {
  position: sticky;
  top: 90px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.94);
  padding: 16px;
}

.toc h2 {
  margin-bottom: 10px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 850;
}

.toc nav {
  display: grid;
  gap: 7px;
  max-height: calc(100vh - 190px);
  overflow: auto;
  padding-right: 4px;
}

.toc a {
  border-left: 3px solid transparent;
  padding-left: 9px;
  color: #40515b;
  text-decoration: none;
  font-size: 13px;
  font-weight: 760;
}

.toc a:hover,
.toc a:focus {
  border-left-color: var(--green);
  color: var(--green-dark);
}

.copy-status {
  min-height: 18px;
  color: var(--muted);
  font-size: 13px;
}

.loading,
.error {
  padding: 48px clamp(24px, 5vw, 56px);
  color: var(--muted);
  font-size: 18px;
}

@media (max-width: 960px) {
  .reader-shell {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
    order: -1;
  }

  .toc nav {
    max-height: none;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .nav,
  main {
    width: min(100% - 28px, 1180px);
  }

  .nav {
    align-items: start;
    flex-direction: column;
    padding: 15px 0;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .doc-body p,
  .doc-body li {
    font-size: 17px;
  }

  .doc-body pre {
    font-size: 14px;
  }

  .toc nav {
    grid-template-columns: 1fr;
  }
}