*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --white:        #ffffff;
  --off-white:    #f7f6f4;
  --surface:      #f2f0ec;
  --light:        #e8e5e0;
  --muted:        #c8c4bc;
  --mid:          #8a857c;
  --ink:          #1a1714;
  --ink-soft:     #2e2925;
  --accent:       #b8a98c;
  --accent-dark:  #8a7960;
  --serif:        'Cormorant Garamond', Georgia, serif;
  --sans:         'DM Sans', system-ui, sans-serif;
  --nav-h:        68px;
  --ease:         cubic-bezier(0.16, 1, 0.3, 1);
  --max-w:        820px;
  --wide-w:       1100px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-weight: 300;
  color: var(--ink);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
ul, ol { padding-left: 1.4rem; }

/* ═══════════════════════════════════════════════════════════════
   NAVBAR
═══════════════════════════════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5vw;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 1px 0 rgba(0,0,0,.07);
  z-index: 100;
}

.nav-logo {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.2rem;
  letter-spacing: .02em;
  color: var(--ink);
}
.nav-logo span { color: var(--accent-dark); }

.nav-links {
  display: flex;
  gap: 2.2rem;
  align-items: center;
}

.nav-links a {
  font-size: .76rem;
  font-weight: 400;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mid);
  position: relative;
  transition: color .3s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--accent-dark);
  transition: width .4s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  color: var(--ink) !important;
  border: 1px solid var(--muted);
  padding: .44rem 1.3rem;
  border-radius: 2px;
  transition: background .3s, border-color .3s !important;
}
.nav-cta:hover { background: var(--ink) !important; color: var(--white) !important; border-color: var(--ink) !important; }
.nav-cta::after { display: none !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-toggle span { display: block; width: 22px; height: 1.5px; background: var(--ink); }

.nav-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* ═══════════════════════════════════════════════════════════════
   PAGE HERO
═══════════════════════════════════════════════════════════════ */
.page-hero {
  padding-top: var(--nav-h);
  background: var(--off-white);
  border-bottom: 1px solid var(--light);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(184,169,140,.16) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-hero-bar {
  position: absolute;
  left: 0; top: var(--nav-h); bottom: 0;
  width: 3px;
  background: var(--accent);
}

.page-hero-inner {
  max-width: var(--wide-w);
  margin: 0 auto;
  padding: 5rem 5vw 5.5rem;
  position: relative;
  z-index: 1;
}

.page-hero-label {
  font-size: .68rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  gap: .7rem;
  margin-bottom: 1.5rem;
}
.page-hero-label::before {
  content: '';
  display: block;
  width: 18px; height: 1px;
  background: var(--accent);
}

.page-hero-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.1;
  letter-spacing: -.015em;
  color: var(--ink);
  margin-bottom: 1.5rem;
}

.page-hero-meta {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.page-hero-meta-item {
  font-size: .78rem;
  color: var(--mid);
  letter-spacing: .04em;
}
.page-hero-meta-item strong {
  font-weight: 400;
  color: var(--ink-soft);
}

/* ═══════════════════════════════════════════════════════════════
   LAYOUT — TWO COLUMN
═══════════════════════════════════════════════════════════════ */
.doc-layout {
  max-width: var(--wide-w);
  margin: 0 auto;
  padding: 5rem 5vw 8rem;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 5rem;
  align-items: start;
}

/* ── Sidebar TOC ── */
.doc-toc {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
}

.toc-label {
  font-size: .64rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.2rem;
  padding-bottom: .8rem;
  border-bottom: 1px solid var(--light);
}

.toc-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.toc-list li a {
  display: block;
  font-size: .8rem;
  color: var(--mid);
  padding: .55rem .8rem .55rem 0;
  border-left: 2px solid transparent;
  padding-left: .8rem;
  line-height: 1.35;
  transition: color .25s, border-color .25s;
}
.toc-list li a:hover {
  color: var(--ink);
  border-left-color: var(--accent);
}
.toc-list li a.active {
  color: var(--ink);
  border-left-color: var(--accent-dark);
  font-weight: 400;
}

/* ── Main content ── */
.doc-content {}

/* ═══════════════════════════════════════════════════════════════
   DOCUMENT TYPOGRAPHY
═══════════════════════════════════════════════════════════════ */
.doc-section {
  margin-bottom: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--light);
}
.doc-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.doc-section-num {
  font-size: .65rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: .8rem;
  display: flex;
  align-items: center;
  gap: .6rem;
}
.doc-section-num::after {
  content: '';
  display: block;
  width: 16px; height: 1px;
  background: var(--accent);
}

.doc-section-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.55rem;
  line-height: 1.22;
  color: var(--ink);
  margin-bottom: 1.4rem;
  letter-spacing: -.01em;
}

.doc-body {
  font-size: .9rem;
  line-height: 1.85;
  color: var(--mid);
}

.doc-body p { margin-bottom: 1rem; }
.doc-body p:last-child { margin-bottom: 0; }
.doc-body strong { color: var(--ink-soft); font-weight: 400; }
.doc-body a { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px; }

.doc-body ul, .doc-body ol {
  margin: .8rem 0 1rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.doc-body li {
  font-size: .9rem;
  line-height: 1.72;
  color: var(--mid);
}

.doc-body ul li::marker { color: var(--accent); }
.doc-body ol li::marker { color: var(--accent-dark); font-family: var(--serif); }

/* Callout box */
.doc-callout {
  background: var(--surface);
  border-left: 3px solid var(--accent);
  border-radius: 0 2px 2px 0;
  padding: 1.4rem 1.6rem;
  margin: 1.4rem 0;
}
.doc-callout p {
  font-size: .88rem;
  line-height: 1.72;
  color: var(--ink-soft);
  margin: 0;
}
.doc-callout strong { font-weight: 500; }

/* Warning callout */
.doc-callout-warn {
  background: #faf8f5;
  border-left: 3px solid var(--ink);
}

/* Definition list */
.doc-def-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1rem 0;
}
.doc-def-item {}
.doc-def-term {
  font-size: .82rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: .2rem;
  letter-spacing: .02em;
}
.doc-def-desc {
  font-size: .88rem;
  line-height: 1.72;
  color: var(--mid);
}

/* ═══════════════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════════════ */
footer {
  background: var(--ink);
  padding: 3.5rem 5vw 2rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,.07);
  flex-wrap: wrap;
}

.footer-logo {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.2rem;
  color: var(--white);
}
.footer-logo span { color: var(--accent); }
.footer-tagline { font-size: .78rem; margin-top: .4rem; color: rgba(255,255,255,.25); letter-spacing: .05em; }

.footer-links { display: flex; gap: 3.5rem; flex-wrap: wrap; }
.footer-col-title { font-size: .62rem; letter-spacing: .18em; text-transform: uppercase; color: rgba(255,255,255,.35); margin-bottom: 1rem; }
.footer-col-links { display: flex; flex-direction: column; gap: .6rem; }
.footer-col-links a { font-size: .8rem; color: rgba(255,255,255,.28); transition: color .3s; }
.footer-col-links a:hover { color: var(--white); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.8rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-copy { font-size: .73rem; color: rgba(255,255,255,.25); }
.footer-legal-links { display: flex; gap: 1.8rem; }
.footer-legal-links a { font-size: .71rem; color: rgba(255,255,255,.22); transition: color .3s; text-decoration: underline; text-underline-offset: 3px; }
.footer-legal-links a:hover { color: rgba(255,255,255,.6); }

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════════ */
@media (max-width: 860px) {
  .doc-layout { grid-template-columns: 1fr; gap: 3rem; }
  .doc-toc { display: none; }
}

@media (max-width: 680px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    background: var(--white);
    padding: 3rem 5vw;
    gap: 2rem;
    z-index: 99;
    overflow-y: auto;
  }
  .page-hero-title { font-size: clamp(2rem, 8vw, 2.8rem); }
  .footer-links { gap: 2rem; }
}