:root {
  --bg: #f6f1e7;
  --bg-strong: #08222b;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: #fffdf8;
  --surface-muted: rgba(8, 34, 43, 0.08);
  --text: #112831;
  --text-soft: #5f6f75;
  --line: rgba(17, 40, 49, 0.12);
  --accent: #db6b2d;
  --accent-soft: rgba(219, 107, 45, 0.14);
  --mint: #1f8a70;
  --shadow: 0 24px 80px rgba(8, 34, 43, 0.14);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --content-width: 1280px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(219, 107, 45, 0.18), transparent 26%),
    radial-gradient(circle at top right, rgba(31, 138, 112, 0.2), transparent 24%),
    linear-gradient(180deg, #fffaf1 0%, var(--bg) 46%, #efe5d5 100%);
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  width: min(calc(100% - 2rem), var(--content-width));
  margin: 1rem auto 0;
  padding: 1rem 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 999px;
  background: rgba(8, 34, 43, 0.82);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 40px rgba(8, 34, 43, 0.2);
  color: #f7efe1;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
}

.brand small {
  color: rgba(247, 239, 225, 0.7);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 16px;
  background: linear-gradient(135deg, #ffbe81 0%, var(--accent) 100%);
  color: #112831;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.9rem;
}

.site-nav a {
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  color: rgba(247, 239, 225, 0.84);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.12);
  color: #fff9f1;
  outline: none;
}

main {
  width: min(calc(100% - 2rem), var(--content-width));
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(290px, 0.8fr);
  gap: 1.5rem;
  padding: 3rem 0 2rem;
}

.hero-copy,
.hero-panel,
.section-block,
.sidebar-card,
.sidebar-nav,
.doc-shell {
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-copy {
  position: relative;
  overflow: hidden;
  padding: 2.5rem;
}

.hero-copy::after {
  content: "";
  position: absolute;
  inset: auto -8% -28% auto;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 138, 112, 0.26), transparent 68%);
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--mint);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1,
.library-topbar h2,
.sidebar-card h1 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  line-height: 1.02;
}

.hero h1 {
  max-width: 14ch;
  font-size: clamp(2.8rem, 6vw, 5.5rem);
}

.hero-text {
  max-width: 62ch;
  margin: 1.1rem 0 0;
  color: var(--text-soft);
  font-size: 1.08rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.6rem;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.9rem;
  padding: 0.75rem 1rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.button-primary {
  background: linear-gradient(135deg, #0d3944 0%, #1c5d6c 100%);
  color: #fff9f1;
  box-shadow: 0 16px 30px rgba(8, 34, 43, 0.18);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--text);
}

.button-block {
  width: 100%;
}

.hero-panel {
  padding: 2rem;
  background:
    linear-gradient(180deg, rgba(8, 34, 43, 0.95) 0%, rgba(8, 34, 43, 0.86) 100%);
  color: #fff7ee;
}

.panel-label {
  margin: 0;
  color: rgba(255, 247, 238, 0.72);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
  margin: 1.5rem 0;
}

.hero-stats div {
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
}

.hero-stats strong {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 2rem;
}

.hero-stats span {
  display: block;
  color: rgba(255, 247, 238, 0.72);
}

.hero-list {
  margin: 0;
  padding-left: 1rem;
  color: rgba(255, 247, 238, 0.82);
  line-height: 1.8;
}

.library {
  padding: 1rem 0 0;
}

.library-topbar {
  display: flex;
  justify-content: space-between;
  gap: 1.2rem;
  align-items: end;
  margin-bottom: 1.2rem;
}

.library-topbar h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
}

.search-shell {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: min(100%, 360px);
  color: var(--text-soft);
  font-size: 0.86rem;
  font-weight: 600;
}

.search-shell input {
  width: 100%;
  min-height: 3rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  color: var(--text);
  font: inherit;
}

.section-grid {
  display: grid;
  gap: 1.2rem;
}

.section-block {
  padding: 1.3rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  margin-bottom: 1rem;
}

.section-header h3 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.5rem;
}

.section-header span {
  color: var(--text-soft);
}

.doc-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.doc-card {
  display: block;
  height: 100%;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.68);
  text-decoration: none;
  transition: transform 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}

.doc-card:hover,
.doc-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(31, 138, 112, 0.34);
  box-shadow: 0 18px 32px rgba(17, 40, 49, 0.08);
  outline: none;
}

.doc-card h4 {
  margin: 0 0 0.5rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.05rem;
}

.doc-card p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.65;
}

.doc-card-tag {
  display: inline-flex;
  align-items: center;
  margin-top: 0.9rem;
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #8d451e;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.empty-state {
  padding: 1.4rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius-md);
  color: var(--text-soft);
  text-align: center;
}

.doc-layout {
  display: grid;
  grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
  gap: 1.4rem;
}

.doc-sidebar {
  position: sticky;
  top: 6.5rem;
  align-self: start;
  display: grid;
  gap: 1rem;
}

.sidebar-card,
.sidebar-nav,
.doc-shell {
  padding: 1.3rem;
}

.sidebar-card h1 {
  font-size: clamp(1.8rem, 2.3vw, 2.5rem);
}

.sidebar-copy {
  color: var(--text-soft);
  line-height: 1.7;
}

.back-link {
  display: inline-block;
  margin-bottom: 0.8rem;
  color: var(--mint);
  font-weight: 700;
  text-decoration: none;
}

.sidebar-nav {
  max-height: calc(100vh - 8rem);
  overflow: auto;
}

.sidebar-group + .sidebar-group {
  margin-top: 1.2rem;
}

.sidebar-group-title {
  margin: 0 0 0.65rem;
  color: var(--text-soft);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sidebar-links {
  display: grid;
  gap: 0.45rem;
}

.sidebar-link {
  display: block;
  padding: 0.65rem 0.8rem;
  border-radius: 14px;
  color: var(--text);
  text-decoration: none;
}

.sidebar-link:hover,
.sidebar-link:focus-visible,
.sidebar-link.is-active {
  background: rgba(17, 40, 49, 0.08);
  outline: none;
}

.doc-shell {
  min-height: 70vh;
  background: var(--surface-strong);
}

.doc-status {
  margin-bottom: 1rem;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.markdown-body {
  color: var(--text);
  line-height: 1.78;
}

.markdown-body > :first-child {
  margin-top: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  font-family: "Space Grotesk", sans-serif;
  line-height: 1.1;
  scroll-margin-top: 7rem;
}

.markdown-body h1 {
  font-size: clamp(2rem, 3vw, 3.3rem);
}

.markdown-body h2 {
  margin-top: 2.4rem;
  padding-top: 0.25rem;
  font-size: 1.85rem;
}

.markdown-body h3 {
  margin-top: 1.8rem;
  font-size: 1.4rem;
}

.markdown-body p,
.markdown-body li {
  color: #203b45;
}

.markdown-body hr {
  height: 1px;
  margin: 2rem 0;
  border: 0;
  background: var(--line);
}

.markdown-body a {
  color: #0b6f5a;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.4rem 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.markdown-body th,
.markdown-body td {
  padding: 0.9rem 0.85rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.markdown-body th {
  background: rgba(8, 34, 43, 0.05);
  font-size: 0.9rem;
}

.markdown-body pre {
  overflow: auto;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: #0e2530;
  color: #f8f2e8;
}

.markdown-body code {
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 0.94em;
}

.markdown-body :not(pre) > code {
  padding: 0.15rem 0.38rem;
  border-radius: 8px;
  background: rgba(17, 40, 49, 0.08);
}

.markdown-body blockquote {
  margin: 1.5rem 0;
  padding: 0.8rem 1rem;
  border-left: 4px solid var(--accent);
  background: rgba(219, 107, 45, 0.08);
}

@media (max-width: 1080px) {
  .doc-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .doc-layout,
  .hero {
    grid-template-columns: 1fr;
  }

  .doc-sidebar {
    position: static;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
    flex-direction: column;
    align-items: stretch;
    border-radius: 28px;
  }

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

  main {
    width: min(calc(100% - 1rem), var(--content-width));
    padding-top: 1rem;
  }

  .hero-copy,
  .hero-panel,
  .section-block,
  .sidebar-card,
  .sidebar-nav,
  .doc-shell {
    padding: 1.1rem;
    border-radius: 22px;
  }

  .library-topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .doc-grid,
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: 100%;
  }
}