/* ================================================================
   DECISIONGATE.ORG — documentation design
   Inspired by: Stripe Docs, Linear Docs, Vercel Docs
   Font stack: Inter + JetBrains Mono
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 14px; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--accent-sel); color: var(--accent); }
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-thumb { background: var(--border-dark); border-radius: 2px; }
::-webkit-scrollbar-track { background: transparent; }

/* ── Tokens ─────────────────────────────────────────────────── */
:root {
  --bg:          #ffffff;
  --bg-subtle:   #f9fafb;
  --bg-code:     #f3f4f6;
  --ink:         #111827;
  --ink-2:       #374151;
  --muted:       #6b7280;
  --subtle:      #9ca3af;
  --border:      #e5e7eb;
  --border-dark: #d1d5db;

  --accent:      #1d4ed8;
  --accent-h:    #1e40af;
  --accent-l:    #eff6ff;
  --accent-sel:  #dbeafe;

  --go:          #15803d;   --go-bg:     #f0fdf4;   --go-border: #bbf7d0;
  --change:      #b45309;   --change-bg: #fffbeb;   --change-border: #fde68a;
  --pause:       #1d4ed8;   --pause-bg:  #eff6ff;   --pause-border:  #bfdbfe;
  --kill:        #b91c1c;   --kill-bg:   #fef2f2;   --kill-border:   #fecaca;

  --sidebar-w:   240px;
  --topbar-h:    0px;
  --content-max: 760px;
  --mono:        'JetBrains Mono', 'Fira Code', monospace;
}

/* topbar removed */

/* ── Layout: sidebar + content ──────────────────────────────── */
.layout {
  display: flex;
  padding-top: var(--topbar-h);
  min-height: 100vh;
}


/* ── Sidebar logo ────────────────────────────────────────────── */
.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; padding: 16px 20px 12px;
}
.sidebar-logo-icon {
  width: 22px; height: 22px; flex-shrink: 0;
  background: var(--ink); position: relative;
}
.sidebar-logo-icon::after {
  content: ''; position: absolute;
  right: -4px; top: -4px;
  width: 8px; height: 8px; background: var(--accent);
}
.sidebar-logo-name {
  font-weight: 600; font-size: 0.88rem;
  color: var(--ink); letter-spacing: -0.01em; line-height: 1.2;
}
.sidebar-logo-ver {
  font-family: var(--mono); font-size: 0.58rem;
  color: var(--subtle); margin-top: 1px;
}

/* ── Sidebar ────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: fixed;
  top: var(--topbar-h);
  left: 0; bottom: 0;
  overflow-y: auto;
  background: var(--bg-subtle);
  border-right: 1px solid var(--border);
  padding: 20px 0 40px;
}

.sidebar-group { margin-bottom: 4px; }
.sidebar-group-label {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--subtle); padding: 10px 20px 4px;
  display: block;
}
.sidebar-group ul { list-style: none; }
.sidebar-group ul a {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 20px; font-size: 0.82rem; font-weight: 400;
  color: var(--muted); text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.1s, background 0.1s, border-color 0.1s;
}
.sidebar-group ul a:hover {
  color: var(--ink); background: var(--bg);
}
.sidebar-group ul a.active {
  color: var(--accent); font-weight: 500;
  border-left-color: var(--accent);
  background: var(--accent-l);
}
.sidebar-divider {
  margin: 12px 20px;
  height: 1px; background: var(--border);
}
.sidebar-download {
  display: flex; align-items: center; gap: 6px;
  margin: 12px 20px 0;
  padding: 7px 12px;
  font-size: 0.8rem; font-weight: 500;
  color: var(--ink-2); text-decoration: none;
  border: 1px solid var(--border); border-radius: 5px;
  background: var(--bg);
  transition: all 0.1s;
}
.sidebar-download:hover {
  border-color: var(--border-dark);
  background: var(--border);
}

/* ── Main content ───────────────────────────────────────────── */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-width: 0;
}

.content {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 48px 40px 80px;
}

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 0.68rem;
  color: var(--subtle); margin-bottom: 28px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb .sep { color: var(--border-dark); }
.breadcrumb .current { color: var(--ink-2); }

/* ── Page title ─────────────────────────────────────────────── */
.page-title {
  font-size: 1.71rem; font-weight: 700;
  line-height: 1.2; letter-spacing: -0.025em;
  color: var(--ink); margin-bottom: 10px;
}
.page-lead {
  font-size: 1rem; line-height: 1.65;
  color: var(--muted); max-width: 600px;
  margin-bottom: 32px;
}
.page-divider {
  height: 1px; background: var(--border);
  margin: 32px 0;
}

/* ── Doc section headings ───────────────────────────────────── */
.doc-h2 {
  font-size: 1.14rem; font-weight: 600;
  color: var(--ink); margin: 40px 0 10px;
  padding-top: 8px;
  letter-spacing: -0.01em;
}
.doc-h2:first-of-type { margin-top: 0; }

.doc-h3 {
  font-size: 0.93rem; font-weight: 600;
  color: var(--ink); margin: 24px 0 6px;
}

.doc-p {
  font-size: 0.93rem; line-height: 1.72;
  color: var(--ink-2); margin-bottom: 14px;
}
.doc-p:last-child { margin-bottom: 0; }

/* ── Callout box ────────────────────────────────────────────── */
.callout {
  border: 1px solid var(--accent-sel);
  border-left: 3px solid var(--accent);
  background: var(--accent-l);
  padding: 12px 16px;
  border-radius: 0 5px 5px 0;
  margin: 20px 0;
}
.callout p {
  font-size: 0.86rem; line-height: 1.6;
  color: var(--accent-h); font-weight: 500;
}

/* ── Code / mono label ──────────────────────────────────────── */
.label {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--subtle); display: block; margin-bottom: 6px;
}
.badge {
  display: inline-block;
  font-family: var(--mono); font-size: 0.62rem; font-weight: 500;
  padding: 1px 6px; border-radius: 3px;
  border: 1px solid var(--border); color: var(--muted);
  background: var(--bg-code); vertical-align: middle;
}
.badge-new {
  background: var(--ink); border-color: var(--ink);
  color: #fff;
}

/* ── Table ──────────────────────────────────────────────────── */
.doc-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.86rem; margin: 20px 0;
}
.doc-table th {
  text-align: left; padding: 8px 14px;
  font-family: var(--mono); font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--muted); background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}
.doc-table td {
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  color: var(--ink-2); vertical-align: top; line-height: 1.55;
}
.doc-table tr:last-child td { border-bottom: none; }
.doc-table tr:hover td { background: var(--bg-subtle); }

/* ── Is / Is Not ────────────────────────────────────────────── */
.is-not {
  display: grid; grid-template-columns: 1fr 1fr;
  border: 1px solid var(--border); border-radius: 6px;
  overflow: hidden; margin: 20px 0;
}
.is-col { padding: 20px 24px; }
.is-col.no  { background: var(--bg-subtle); border-right: 1px solid var(--border); }
.is-col.yes { background: var(--bg); }
.is-col-head {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding-bottom: 12px; margin-bottom: 2px;
  border-bottom: 1px solid var(--border);
}
.is-col.no  .is-col-head { color: var(--muted); }
.is-col.yes .is-col-head { color: var(--accent); }
.is-col ul { list-style: none; margin-top: 4px; }
.is-col li {
  display: flex; gap: 8px; align-items: flex-start;
  padding: 6px 0; border-bottom: 1px solid var(--border);
  font-size: 0.83rem; line-height: 1.5;
}
.is-col li:last-child { border-bottom: none; }
.is-col.no  li { color: var(--muted); }
.is-col.yes li { color: var(--ink-2); }
.is-mark { flex-shrink: 0; font-family: var(--mono); font-size: 0.75rem; margin-top: 1px; }
.is-col.no  .is-mark { color: var(--kill); }
.is-col.yes .is-mark { color: var(--go); }

/* ── Step list ──────────────────────────────────────────────── */
.steps { margin: 20px 0; }
.step-row {
  display: grid; grid-template-columns: 32px 1fr;
  gap: 16px; padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.step-row:last-child { border-bottom: none; }
.step-num {
  font-family: var(--mono); font-size: 0.75rem; font-weight: 500;
  color: var(--accent); background: var(--accent-l);
  border: 1px solid var(--accent-sel);
  width: 28px; height: 28px; border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.step-title { font-weight: 600; font-size: 0.9rem; color: var(--ink); margin-bottom: 5px; }
.step-body  { font-size: 0.86rem; color: var(--muted); line-height: 1.65; }

/* ── Gate questions ─────────────────────────────────────────── */
.questions { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 20px 0; }
.q-card {
  border: 1px solid var(--border); border-radius: 6px;
  padding: 20px; background: var(--bg);
  transition: border-color 0.1s;
}
.q-card:hover { border-color: var(--border-dark); }
.q-label {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 500;
  color: var(--accent); text-transform: uppercase;
  letter-spacing: 0.08em; margin-bottom: 8px;
  background: var(--accent-l); border: 1px solid var(--accent-sel);
  display: inline-block; padding: 2px 8px; border-radius: 3px;
}
.q-title { font-weight: 600; font-size: 0.9rem; color: var(--ink); margin-bottom: 12px; }
.q-list { list-style: none; }
.q-list li {
  display: flex; gap: 6px; align-items: flex-start;
  padding: 5px 0; border-bottom: 1px solid var(--border);
  font-size: 0.82rem; color: var(--ink-2); line-height: 1.5;
}
.q-list li:last-child { border-bottom: none; }
.q-list li::before { content: '→'; color: var(--accent); flex-shrink: 0; font-size: 0.75rem; margin-top: 1px; }

/* ── Outcomes ───────────────────────────────────────────────── */
.outcomes { display: grid; grid-template-columns: 1fr; gap: 8px; margin: 20px 0; }
.outcome-row {
  display: grid; grid-template-columns: 96px 80px 1fr;
  border: 1px solid var(--border); border-radius: 6px;
  overflow: hidden;
}
.outcome-name {
  padding: 16px; font-weight: 700; font-size: 1.1rem;
  display: flex; align-items: center;
  border-right: 1px solid var(--border);
}
.outcome-action {
  padding: 16px 12px; font-family: var(--mono); font-size: 0.65rem;
  font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em;
  display: flex; align-items: center; border-right: 1px solid var(--border);
}
.outcome-desc { padding: 16px; font-size: 0.86rem; color: var(--muted); line-height: 1.55; display: flex; align-items: center; }

.outcome-row.go     .outcome-name { color: var(--go); background: var(--go-bg); }
.outcome-row.change .outcome-name { color: var(--change); background: var(--change-bg); }
.outcome-row.pause  .outcome-name { color: var(--pause); background: var(--pause-bg); }
.outcome-row.kill   .outcome-name { color: var(--kill); background: var(--kill-bg); }

.outcome-row.go     .outcome-action { color: var(--go); background: var(--go-bg); border-color: var(--go-border); }
.outcome-row.change .outcome-action { color: var(--change); background: var(--change-bg); border-color: var(--change-border); }
.outcome-row.pause  .outcome-action { color: var(--pause); background: var(--pause-bg); border-color: var(--pause-border); }
.outcome-row.kill   .outcome-action { color: var(--kill); background: var(--kill-bg); border-color: var(--kill-border); }

/* ── RI bar ─────────────────────────────────────────────────── */
.ri-bar { display: flex; gap: 4px; margin: 16px 0; }
.ri-cell {
  flex: 1; padding: 12px 8px; text-align: center;
  border: 1px solid var(--border); border-radius: 5px;
  background: var(--bg-subtle);
}
.ri-num { font-weight: 700; font-size: 1.15rem; line-height: 1; margin-bottom: 4px; }
.ri-txt { font-family: var(--mono); font-size: 0.6rem; color: var(--muted); line-height: 1.3; }
.ri-cell:nth-child(1) .ri-num { color: var(--go); }
.ri-cell:nth-child(2) .ri-num { color: #2d6a2d; }
.ri-cell:nth-child(3) .ri-num { color: var(--change); }
.ri-cell:nth-child(4) .ri-num { color: #c2410c; }
.ri-cell:nth-child(5) .ri-num { color: var(--kill); }

/* ── AI checklist ───────────────────────────────────────────── */
.ai-group-label {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); margin: 24px 0 8px;
  padding-bottom: 6px; border-bottom: 1px solid var(--border);
}
.ai-item {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 0; border-bottom: 1px solid var(--border);
}
.ai-item:last-child { border-bottom: none; }
.ai-badge {
  flex-shrink: 0; font-family: var(--mono); font-size: 0.6rem;
  font-weight: 500; padding: 2px 8px; border-radius: 3px;
  letter-spacing: 0.04em; border: 1px solid; margin-top: 1px;
}
.ai-badge.critical { color: var(--kill); background: var(--kill-bg); border-color: var(--kill-border); }
.ai-badge.high     { color: var(--change); background: var(--change-bg); border-color: var(--change-border); }
.ai-badge.medium   { color: var(--pause); background: var(--pause-bg); border-color: var(--pause-border); }
.ai-item-title { font-weight: 600; font-size: 0.86rem; color: var(--ink); margin-bottom: 3px; }
.ai-item-desc  { font-size: 0.82rem; color: var(--muted); line-height: 1.55; }

/* ── Use case cards ─────────────────────────────────────────── */
.uc-list { margin: 20px 0; }
.uc-item {
  display: grid; grid-template-columns: 140px 1fr;
  gap: 20px; padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.uc-item:last-child { border-bottom: none; }
.uc-meta {}
.uc-num {
  font-family: var(--mono); font-size: 0.68rem; font-weight: 500;
  color: var(--subtle); margin-bottom: 4px;
}
.uc-domain {
  font-weight: 600; font-size: 0.82rem;
  color: var(--accent);
}
.uc-title { font-weight: 600; font-size: 0.9rem; color: var(--ink); margin-bottom: 6px; }
.uc-desc  { font-size: 0.83rem; color: var(--muted); line-height: 1.6; margin-bottom: 8px; }
.uc-example {
  font-size: 0.8rem; color: var(--muted); font-style: italic;
  padding: 8px 12px; background: var(--bg-subtle);
  border-left: 2px solid var(--border-dark);
  border-radius: 0 3px 3px 0; line-height: 1.55;
}

/* ── Standard article rows ──────────────────────────────────── */
.art-row {
  display: grid; grid-template-columns: 100px 1fr;
  gap: 20px; padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.art-row:last-child { border-bottom: none; }
.art-id {
  font-family: var(--mono); font-size: 0.7rem; font-weight: 500;
  color: var(--muted); padding-top: 2px;
}
.art-title { font-weight: 600; font-size: 0.9rem; color: var(--ink); margin-bottom: 6px; }
.art-body  { font-size: 0.83rem; color: var(--muted); line-height: 1.65; }

/* ── Part heading ───────────────────────────────────────────── */
.part-head {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-l);
  border: 1px solid var(--accent-sel);
  padding: 5px 12px; display: inline-block;
  border-radius: 3px; margin: 32px 0 0;
}

/* ── Homepage specifics ─────────────────────────────────────── */
.home-hero {
  border-bottom: 1px solid var(--border);
  padding-bottom: 32px; margin-bottom: 32px;
}
.home-hero .version-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 0.68rem; font-weight: 500;
  color: var(--accent); background: var(--accent-l);
  border: 1px solid var(--accent-sel);
  padding: 3px 10px; border-radius: 3px;
  margin-bottom: 16px;
}
.home-hero .version-badge::before {
  content: ''; display: block; width: 5px; height: 5px;
  background: var(--accent); border-radius: 50%;
}
.home-hero h1 {
  font-size: 1.85rem; font-weight: 700;
  line-height: 1.2; letter-spacing: -0.03em;
  color: var(--ink); margin-bottom: 12px;
}
.home-hero p {
  font-size: 0.95rem; color: var(--muted);
  line-height: 1.7; max-width: 540px; margin-bottom: 20px;
}
.home-btn-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 7px 16px; font-size: 0.82rem; font-weight: 500;
  background: var(--accent); color: #fff;
  border: 1px solid var(--accent); border-radius: 5px;
  text-decoration: none; transition: background 0.1s;
}
.btn-primary:hover { background: var(--accent-h); border-color: var(--accent-h); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 7px 16px; font-size: 0.82rem; font-weight: 500;
  background: var(--bg); color: var(--ink-2);
  border: 1px solid var(--border); border-radius: 5px;
  text-decoration: none; transition: all 0.1s;
}
.btn-secondary:hover { border-color: var(--border-dark); background: var(--bg-subtle); }
.home-meta {
  font-family: var(--mono); font-size: 0.68rem;
  color: var(--subtle); margin-top: 12px;
}

.why-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin: 20px 0; }
.why-card {
  padding: 18px 20px; border: 1px solid var(--border);
  border-radius: 6px; background: var(--bg);
}
.why-card-num {
  font-family: var(--mono); font-size: 0.62rem; font-weight: 500;
  color: var(--subtle); text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 8px;
}
.why-card-title { font-weight: 600; font-size: 0.86rem; color: var(--ink); margin-bottom: 6px; }
.why-card-body  { font-size: 0.82rem; color: var(--muted); line-height: 1.6; }

.oc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 20px 0; }
.oc-mini {
  padding: 16px; border: 1px solid var(--border);
  border-radius: 6px; border-top: 2px solid;
}
.oc-mini.go     { border-top-color: var(--go); }
.oc-mini.change { border-top-color: var(--change); }
.oc-mini.pause  { border-top-color: var(--pause); }
.oc-mini.kill   { border-top-color: var(--kill); }
.oc-name {
  font-weight: 700; font-size: 1rem;
  margin-bottom: 3px;
}
.oc-mini.go     .oc-name { color: var(--go); }
.oc-mini.change .oc-name { color: var(--change); }
.oc-mini.pause  .oc-name { color: var(--pause); }
.oc-mini.kill   .oc-name { color: var(--kill); }
.oc-mini-action {
  font-family: var(--mono); font-size: 0.62rem;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted); margin-bottom: 6px;
}
.oc-mini-desc { font-size: 0.8rem; color: var(--muted); line-height: 1.5; }

/* ── CTA block ──────────────────────────────────────────────── */
.cta-block {
  background: var(--bg-subtle); border: 1px solid var(--border);
  border-radius: 6px; padding: 24px 28px;
  display: flex; align-items: center;
  justify-content: space-between; gap: 24px;
  margin: 40px 0 0; flex-wrap: wrap;
}
.cta-block h4 {
  font-weight: 600; font-size: 0.93rem; color: var(--ink);
  margin-bottom: 4px;
}
.cta-block p { font-size: 0.8rem; color: var(--muted); }
.cta-btns { display: flex; gap: 8px; flex-shrink: 0; flex-wrap: wrap; }

/* ── Footer ─────────────────────────────────────────────────── */
.doc-footer {
  border-top: 1px solid var(--border);
  padding: 28px 40px;
  display: flex; align-items: center;
  justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-family: var(--mono); font-size: 0.65rem;
  color: var(--subtle); max-width: var(--content-max);
  margin: 0 auto;
}
.doc-footer a { color: var(--muted); text-decoration: none; }
.doc-footer a:hover { color: var(--ink); }

/* ── Contact form ───────────────────────────────────────────── */
.contact-layout { display: grid; grid-template-columns: 200px 1fr; gap: 40px; }
.contact-sidebar-info { padding-top: 4px; }
.contact-sidebar-info p { font-size: 0.82rem; color: var(--muted); line-height: 1.65; margin-bottom: 14px; }
.contact-sidebar-info .li-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.8rem; font-weight: 500; color: var(--accent);
  text-decoration: none;
}
.contact-sidebar-info .li-link:hover { text-decoration: underline; }

.cf { border: 1px solid var(--border); border-radius: 6px; padding: 24px; background: var(--bg); }
.cf-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.cf-field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.cf-field:last-of-type { margin-bottom: 0; }
.cf-label { font-size: 0.78rem; font-weight: 500; color: var(--ink-2); }
.cf-req { color: var(--kill); }
.cf-field input, .cf-field select, .cf-field textarea {
  width: 100%; padding: 8px 12px;
  background: var(--bg-subtle); border: 1px solid var(--border);
  border-radius: 5px; font-family: inherit; font-size: 0.86rem;
  color: var(--ink); outline: none;
  transition: border-color 0.1s, box-shadow 0.1s, background 0.1s;
  -webkit-appearance: none;
}
.cf-field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7' viewBox='0 0 10 7'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%239ca3af' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
  padding-right: 32px; cursor: pointer;
}
.cf-field textarea { resize: vertical; min-height: 110px; line-height: 1.55; }
.cf-field input:focus, .cf-field select:focus, .cf-field textarea:focus {
  border-color: var(--accent); background: var(--bg);
  box-shadow: 0 0 0 3px rgba(29,78,216,0.08);
}
.cf-field input.invalid, .cf-field textarea.invalid {
  border-color: var(--kill); box-shadow: 0 0 0 3px rgba(185,28,28,0.07);
}
.cf-err { font-size: 0.74rem; color: var(--kill); display: none; }
.cf-field.has-error .cf-err { display: block; }
.cf-counter { font-family: var(--mono); font-size: 0.62rem; color: var(--subtle); text-align: right; margin-top: -4px; }
.cf-foot { display: flex; align-items: center; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.cf-submit {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px; font-size: 0.82rem; font-weight: 500;
  background: var(--accent); color: #fff; border: none;
  border-radius: 5px; cursor: pointer; transition: background 0.1s;
}
.cf-submit:hover { background: var(--accent-h); }
.cf-submit:disabled { background: var(--muted); cursor: not-allowed; }
.cf-spin { display: none; width: 12px; height: 12px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin .6s linear infinite; }
.cf-submit.loading .cf-spin { display: block; }
.cf-submit.loading .cf-arrow { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.cf-privacy { font-size: 0.74rem; color: var(--subtle); }
.cf-success { border: 1px solid var(--go-border); border-radius: 6px; background: var(--go-bg); padding: 28px 24px; text-align: center; }
.cf-success-icon { width: 40px; height: 40px; background: #dcfce7; border: 1px solid var(--go-border); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; color: var(--go); }
.cf-success h4 { font-weight: 600; font-size: 0.93rem; color: var(--ink); margin-bottom: 6px; }
.cf-success p { font-size: 0.82rem; color: var(--muted); margin-bottom: 16px; }
.cf-reset { font-size: 0.78rem; color: var(--muted); background: none; border: 1px solid var(--border); border-radius: 4px; padding: 5px 12px; cursor: pointer; }
.cf-reset:hover { border-color: var(--border-dark); color: var(--ink); }

/* ── About page ─────────────────────────────────────────────── */
.author-card {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 20px; border: 1px solid var(--border);
  border-radius: 6px; background: var(--bg-subtle); margin: 20px 0;
}
.author-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent); color: #fff;
  font-weight: 700; font-size: 0.9rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.author-name { font-weight: 600; font-size: 0.9rem; color: var(--ink); }
.author-role { font-size: 0.78rem; color: var(--muted); margin-top: 1px; }

.principle-row {
  display: grid; grid-template-columns: 72px 1fr;
  gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border);
}
.principle-row:last-child { border-bottom: none; }
.principle-word { font-weight: 700; font-size: 0.9rem; color: var(--accent); font-family: var(--mono); }
.principle-sub  { font-weight: 600; font-size: 0.83rem; color: var(--ink); margin-bottom: 4px; }
.principle-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.6; }

.contrib-item {
  display: grid; grid-template-columns: 32px 1fr;
  gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--border);
}
.contrib-item:last-child { border-bottom: none; }
.contrib-num {
  font-family: var(--mono); font-size: 0.72rem; font-weight: 500;
  color: var(--accent); background: var(--accent-l);
  border: 1px solid var(--accent-sel);
  width: 26px; height: 26px; border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contrib-title { font-weight: 600; font-size: 0.86rem; color: var(--ink); margin-bottom: 4px; }
.contrib-body  { font-size: 0.82rem; color: var(--muted); line-height: 1.6; }
.contrib-body a { color: var(--accent); text-decoration: none; }
.contrib-body a:hover { text-decoration: underline; }

/* ── Inline link ────────────────────────────────────────────── */
.doc-link { color: var(--accent); text-decoration: none; font-weight: 500; }
.doc-link:hover { text-decoration: underline; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .main { margin-left: 0; }
  .topbar-nav { display: none; }
  .topbar-right .topbar-btn:not(.primary) { display: none; }
  .questions { grid-template-columns: 1fr; }
  .why-grid   { grid-template-columns: 1fr; }
  .oc-grid    { grid-template-columns: 1fr; }
  .is-not     { grid-template-columns: 1fr; }
  .is-col.no  { border-right: none; border-bottom: 1px solid var(--border); }
  .outcome-row { grid-template-columns: 80px 70px 1fr; }
  .uc-item { grid-template-columns: 1fr; gap: 8px; }
  .art-row { grid-template-columns: 80px 1fr; gap: 12px; }
  .contact-layout { grid-template-columns: 1fr; }
  .cta-block { flex-direction: column; }
  .content { padding: 32px 20px 60px; }
  .doc-footer { padding: 24px 20px; }
}
@media (max-width: 560px) {
  .cf-row { grid-template-columns: 1fr; }
  .outcome-row { grid-template-columns: 1fr; }
  .outcome-name, .outcome-action { border-right: none; border-bottom: 1px solid var(--border); }
  .home-hero h1 { font-size: 1.5rem; }
  .page-title { font-size: 1.4rem; }
  .ri-bar { flex-wrap: wrap; }
  .ri-cell { flex: 0 0 calc(33% - 4px); }
}

/* ── Mobile navigation bar ────────────────────────────────── */
.mob-bar {
  display: none;
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: 48px; background: var(--bg);
  border-bottom: 1px solid var(--border);
  align-items: center; justify-content: space-between;
  padding: 0 16px;
}
.mob-logo {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none; font-weight: 600;
  font-size: 0.9rem; color: var(--ink);
}
.mob-logo-icon {
  width: 20px; height: 20px; background: var(--ink);
  position: relative; flex-shrink: 0;
}
.mob-logo-icon::after {
  content: ''; position: absolute;
  right: -3px; top: -3px;
  width: 7px; height: 7px; background: var(--accent);
}
.mob-toggle {
  background: none; border: none; cursor: pointer;
  padding: 6px; display: flex; flex-direction: column;
  gap: 4px; align-items: center; justify-content: center;
}
.mob-toggle span {
  display: block; width: 20px; height: 1.5px;
  background: var(--ink);
  transition: all 0.22s ease;
  transform-origin: center;
}
.mob-toggle.active span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.mob-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.mob-toggle.active span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.mob-overlay {
  display: none; position: fixed;
  inset: 0; z-index: 98;
  background: rgba(0,0,0,0.35);
}
.mob-overlay.show { display: block; }

@media (max-width: 900px) {
  .mob-bar { display: flex; }

  .layout { padding-top: 48px; }

  .sidebar {
    display: block !important;
    position: fixed;
    top: 48px; left: 0; bottom: 0; z-index: 99;
    width: 260px;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: none;
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0,0,0,0.12);
  }
}