/* Top Detection AI — editorial, rigorous, accessible */
:root {
  --ink: #1a1f2e;
  --ink-soft: #3d4556;
  --ink-muted: #5c6578;
  --paper: #f7f4ef;
  --paper-raised: #ffffff;
  --paper-tint: #efeae2;
  --accent: #0b5f4b;
  --accent-hover: #084a3a;
  --accent-soft: #d8ebe4;
  --warn: #8a4b12;
  --warn-bg: #fbf0e4;
  --warn-border: #e0c29a;
  --line: #d9d2c5;
  --line-strong: #b8ae9c;
  --focus: #0b5f4b;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(26, 31, 46, 0.06), 0 8px 24px rgba(26, 31, 46, 0.06);
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --font-sans: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --max: 72rem;
  --prose: 42rem;
  --space: clamp(1rem, 2.5vw, 1.75rem);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(11, 95, 75, 0.06), transparent 60%),
    radial-gradient(900px 400px at 100% 0%, rgba(138, 75, 18, 0.05), transparent 55%),
    var(--paper);
  min-height: 100vh;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { color: var(--accent-hover); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  background: var(--ink);
  color: var(--paper);
  padding: 0.75rem 1rem;
  z-index: 1000;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 244, 239, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem var(--space);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--ink);
  min-width: 0;
}
.brand-mark {
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 6px;
  background: var(--accent);
  color: var(--paper);
  display: inline-grid;
  place-items: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.95rem;
  flex-shrink: 0;
}
.brand-text {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand-text span { color: var(--accent); font-weight: 600; }

.nav-toggle {
  display: none;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
  font: inherit;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.1rem;
  align-items: center;
}
.site-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 550;
  padding: 0.25rem 0;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent);
}
.site-nav a[aria-current="page"] {
  box-shadow: inset 0 -2px 0 var(--accent);
}

.banner-dev {
  background: var(--warn-bg);
  border-bottom: 1px solid var(--warn-border);
  color: var(--warn);
}
.banner-dev-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.75rem var(--space);
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.95rem;
  line-height: 1.45;
}
.banner-dev strong {
  display: inline-block;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.78rem;
  background: var(--warn);
  color: #fff;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  margin-right: 0.35rem;
  vertical-align: 0.05em;
}

.layout {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem var(--space) 3.5rem;
}

.hero {
  display: grid;
  gap: 1.5rem;
  padding: 1.5rem 0 2rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 2.25rem;
}
.hero-kicker {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.5vw, 3.15rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin: 0;
  max-width: 18ch;
  font-weight: 700;
}
.hero-lede {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--ink-soft);
  max-width: 40rem;
  margin: 0;
  line-height: 1.55;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.15rem;
  border-radius: 8px;
  font: inherit;
  font-weight: 650;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}
.btn-secondary {
  background: var(--paper-raised);
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.grid-3 {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(3, 1fr);
}
.grid-2 {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow);
}
.card h2, .card h3 {
  font-family: var(--font-serif);
  margin: 0 0 0.55rem;
  letter-spacing: -0.02em;
  line-height: 1.25;
}
.card h2 { font-size: 1.35rem; }
.card h3 { font-size: 1.15rem; }
.card p { margin: 0 0 0.75rem; color: var(--ink-soft); }
.card p:last-child { margin-bottom: 0; }
.card .card-link {
  font-weight: 650;
  text-decoration: none;
}
.card .card-link::after { content: " →"; }

.section {
  margin: 2.5rem 0;
}
.section-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.1rem;
}
.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 2.5vw, 1.85rem);
  margin: 0;
  letter-spacing: -0.02em;
}
.section-note {
  color: var(--ink-muted);
  font-size: 0.95rem;
  margin: 0;
}

.prose {
  max-width: var(--prose);
}
.prose h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 0 0 1rem;
}
.prose h2 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  margin: 2rem 0 0.75rem;
  letter-spacing: -0.02em;
}
.prose h3 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--ink);
}
.prose p, .prose ul, .prose ol { color: var(--ink-soft); }
.prose ul, .prose ol { padding-left: 1.25rem; }
.prose li { margin: 0.35rem 0; }
.prose .lede {
  font-size: 1.2rem;
  color: var(--ink-soft);
  line-height: 1.55;
  margin-top: 0;
}

.callout {
  background: var(--accent-soft);
  border: 1px solid #b7d7cb;
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: 1rem 1.15rem;
  margin: 1.5rem 0;
  color: var(--ink);
}
.callout strong { color: var(--accent-hover); }
.callout.warn {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  border-left-color: var(--warn);
}
.callout.warn strong { color: var(--warn); }

.status-panel {
  background: var(--paper-raised);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  margin: 1.5rem 0;
}
.status-panel h2 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
}
.status-panel p { margin: 0; color: var(--ink-soft); }
.status-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.55rem;
}
.status-list li {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  color: var(--ink-soft);
  font-size: 0.98rem;
}
.badge {
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  background: var(--paper-tint);
  color: var(--ink-muted);
  border: 1px solid var(--line);
}
.badge.planned { background: #eef3f8; color: #3a5470; border-color: #c8d5e3; }
.badge.active { background: var(--accent-soft); color: var(--accent-hover); border-color: #b7d7cb; }

.meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: 0.9rem;
  color: var(--ink-muted);
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}
.meta-bar span { display: inline-flex; align-items: center; gap: 0.35rem; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-raised);
  margin: 1.25rem 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th, td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  background: var(--paper-tint);
  font-weight: 650;
  color: var(--ink);
  white-space: nowrap;
}
tr:last-child td { border-bottom: none; }
td { color: var(--ink-soft); }

.contact-box {
  background: var(--paper-raised);
  border: 2px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.25rem 0;
}
.contact-box h2 {
  font-family: var(--font-serif);
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}
.placeholder-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--warn);
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}
.contact-box .placeholder-lines {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--ink-muted);
  background: var(--paper-tint);
  border-radius: 6px;
  padding: 1rem;
  margin: 0.75rem 0 0;
  line-height: 1.7;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper-tint);
  margin-top: auto;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem var(--space) 2.5rem;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1.4fr 1fr 1fr;
}
.footer-brand {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 0.4rem;
}
.footer-copy {
  color: var(--ink-muted);
  font-size: 0.92rem;
  margin: 0;
  max-width: 28rem;
}
.footer-col h3 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-muted);
  margin: 0 0 0.65rem;
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-col a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  display: inline-block;
  padding: 0.2rem 0;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--space) 1.5rem;
  color: var(--ink-muted);
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    width: 100%;
  }
  .site-nav.is-open { display: block; }
  .header-inner { flex-wrap: wrap; }
  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 0 0.25rem;
  }
  .site-nav a {
    display: block;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--line);
  }
  .site-nav a[aria-current="page"] {
    box-shadow: none;
    color: var(--accent);
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}

@media print {
  .site-header, .banner-dev, .nav-toggle, .hero-actions { position: static; }
  .site-nav { display: none; }
  body { background: #fff; }
  .card, .status-panel { box-shadow: none; }
}