:root {
  color-scheme: light only;
  --bg: #FFF8F1;
  --panel: rgba(255, 255, 255, 0.82);
  --ink: #6F4B2E;
  --accent: #A47148;
  --label: #7FB77E;
  --secondary: rgba(164, 113, 72, 0.7);
  --water: #A8DADC;
  --sand: #E2D9C9;
  --btn-primary: #7FB77E;
  --btn-soft-bg: #EDE4D5;
  --btn-soft-ink: #A47148;
  --warning: #E8C278;
  --shadow: 0 10px 28px rgba(0, 0, 0, 0.16);
  --shadow-sm: 0 6px 16px rgba(0, 0, 0, 0.1);
  --max: 68ch;
  --pad: 20px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "SF Pro", "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ---------- Hero ---------- */

header.hero {
  position: relative;
  padding: clamp(40px, 9vw, 76px) 0 32px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -140px;
  right: -120px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: var(--water);
  opacity: 0.22;
  filter: blur(70px);
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 10px;
  background: var(--sand);
  object-fit: cover;
  display: inline-block;
  box-shadow: var(--shadow-sm);
}

.wordmark {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(1.9rem, 6vw, 2.6rem);
  line-height: 1.15;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.updated {
  color: var(--secondary);
  font-size: 0.94rem;
  margin: 0;
}

.note {
  margin-top: 22px;
  padding: 14px 18px;
  background: var(--panel);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  font-size: 0.9rem;
  color: var(--ink);
}

.note strong { color: var(--accent); }

.note .ph { background: var(--warning); }

/* ---------- Table of contents ---------- */

nav.toc {
  margin: 26px 0 6px;
}

nav.toc details {
  background: var(--panel);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

nav.toc summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--label);
  padding: 16px 20px;
  list-style: none;
}

nav.toc summary::-webkit-details-marker { display: none; }

nav.toc summary::after {
  content: "";
  float: right;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: translateY(-2px) rotate(45deg);
  transition: transform 0.2s ease;
}

nav.toc details[open] summary::after {
  transform: translateY(2px) rotate(-135deg);
}

nav.toc ol {
  margin: 0;
  padding: 4px 20px 18px 40px;
  columns: 1;
}

@media (min-width: 560px) {
  nav.toc ol { columns: 2; column-gap: 28px; }
}

nav.toc li {
  break-inside: avoid;
  margin-bottom: 4px;
  font-size: 0.92rem;
}

nav.toc a {
  color: var(--ink);
  text-decoration: none;
  border-radius: 10px;
  padding: 2px 4px;
  margin-left: -4px;
}

nav.toc a:hover {
  color: var(--accent);
  background: var(--btn-soft-bg);
}

/* ---------- Sections ---------- */

main {
  counter-reset: section;
  padding: 26px 0 60px;
}

main > section {
  counter-increment: section;
  padding: 34px 0;
  border-top: 1px solid var(--sand);
  scroll-margin-top: 18px;
}

main > section:first-child {
  border-top: none;
}

h2 {
  margin: 0 0 16px;
}

h2::before {
  content: "Section " counter(section, decimal-leading-zero);
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--label);
  margin-bottom: 8px;
}

h2 {
  font-size: clamp(1.2rem, 3.6vw, 1.5rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.005em;
}

h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
  margin: 24px 0 10px;
}

p { margin: 0 0 14px; }

section strong { color: var(--accent); font-weight: 700; }

ul {
  margin: 0 0 14px;
  padding-left: 22px;
}

li { margin-bottom: 6px; }

.label-line { margin: 0 0 14px; }

.label-line .label {
  color: var(--label);
  font-weight: 700;
  font-size: 0.85em;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.contact-block {
  margin: 0 0 18px;
  padding: 18px 20px;
  background: var(--panel);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
}

.contact-block p { margin: 0 0 6px; }
.contact-block p:last-child { margin-bottom: 0; }

/* ---------- Placeholders ---------- */

.ph {
  background: rgba(232, 194, 120, 0.35);
  border-radius: 6px;
  padding: 1px 6px;
  color: #6B4E17;
  font-weight: 600;
}

/* ---------- Back to top ---------- */

a.backtotop {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 46px;
  height: 46px;
  border-radius: 20px;
  background: var(--btn-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.15rem;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

a.backtotop.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* ---------- Footer ---------- */

footer.site-footer {
  padding: 30px var(--pad) 48px;
  border-top: 1px solid var(--sand);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

.footer-wordmark { font-size: 0.95rem; }

.footer-contact {
  margin: 0;
  color: var(--secondary);
  font-size: 0.88rem;
}

@media print {
  nav.toc, a.backtotop, .hero-glow { display: none !important; }
  .ph { background: none; padding: 0; }
}