:root {
  --ink: #220C10;
  --earth: #381D16;
  --pine: #14342B;
  --sage: #598958;
  --cream: #fffcef;
  --sage-soft: rgba(89, 137, 88, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Georgia", "Times New Roman", serif;
  background: #fffdfa;
  color: var(--ink);
  line-height: 1.65;
}

.sans {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

a {
  color: var(--pine);
}

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Header & Hero Container ---------- */
.header-hero {
  background: linear-gradient(160deg, var(--pine) 0%, var(--ink) 100%);
}

/* ---------- Header ---------- */
header {
  background: transparent;
  color: var(--cream);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: 1040px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo img {
  height: 36px;
  width: auto;
  display: block;
}

nav.links {
  display: flex;
  gap: 1.75rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.95rem;
}

nav.links a {
  color: var(--cream);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

nav.links a:hover {
  color: #fff;
  border-color: var(--sage);
}

nav.links a.active {
  border-color: var(--sage);
}

/* ---------- Hero ---------- */
.hero {
  background: transparent;
  color: var(--cream);
  padding: 6rem 0 5rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.15;
  max-width: 20ch;
  margin: 0 auto 1.25rem;
}

.hero h1 em {
  color: var(--sage);
  font-style: normal;
}

.hero p {
  max-width: 56ch;
  margin: 0 auto 2.25rem;
  font-size: 1.15rem;
  opacity: 0.9;
}

.btn {
  display: inline-block;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  text-decoration: none;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  font-size: 1rem;
  border: none;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--sage) 0%, #24a824 100%);
  color: #fff;
  font-weight: 700;
  border: 1px solid rgba(74, 125, 74, 0.4);
  box-shadow: 0 4px 12px rgba(20, 52, 43, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--sage) 0%, #24a824 100%);
  box-shadow: 0 6px 16px rgba(20, 52, 43, 0.2);
  transform: translateY(-2px);
}

.btn-ghost {
  color: var(--cream);
  border: 1px solid rgba(244, 247, 245, 0.4);
  margin-left: 0.75rem;
}

.btn-ghost:hover {
  border-color: var(--sage);
  color: #fff;
}

/* ---------- Sections ---------- */
section {
  padding: 4.5rem 0;
}

.section-alt {
  background: #f8f2e8;
}

.kicker {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  color: var(--sage);
  font-weight: 700;
  display: block;
  margin-bottom: 0.5rem;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 1rem;
  color: var(--ink);
}

.lede {
  font-size: 1.1rem;
  max-width: 62ch;
  color: var(--earth);
}

/* ---------- Cards ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.card {
  background: #f9f7ee;
  border: 1px solid rgba(20, 52, 43, 0.12);
  border-top: 4px solid var(--sage);
  border-radius: 8px;
  padding: 1.75rem;
}

.section-alt .card {
  background: #fff;
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
  color: var(--pine);
}

.card p {
  font-size: 0.98rem;
  color: var(--earth);
}

.card ul {
  margin-top: 0.75rem;
  padding-left: 1.1rem;
  font-size: 0.95rem;
  color: var(--earth);
}

.card li {
  margin-bottom: 0.4rem;
}

/* ---------- Audience ---------- */
.audience {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.audience .card {
  border-top-color: var(--pine);
}

/* ---------- Promise band ---------- */
.promise {
  background: var(--earth);
  color: var(--cream);
  text-align: center;
}

.promise h2 {
  color: var(--cream);
}

.promise p {
  max-width: 62ch;
  margin: 0 auto;
  font-size: 1.1rem;
  opacity: 0.92;
}

/* ---------- Prose (About) ---------- */
.prose {
  max-width: 68ch;
  margin: 0 auto;
}

.prose p {
  margin-bottom: 1.4rem;
  font-size: 1.08rem;
}

.prose .pull {
  border-left: 4px solid var(--sage);
  padding: 0.25rem 0 0.25rem 1.25rem;
  font-size: 1.25rem;
  color: var(--pine);
  margin: 2rem 0;
}

/* ---------- Footer ---------- */
footer {
  background: var(--ink);
  color: rgba(244, 247, 245, 0.75);
  padding: 2.5rem 0;
  text-align: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.9rem;
}

footer a {
  color: var(--sage);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* ---------- Inline code (mentions, API terms) ---------- */
code {
  font-family: "SF Mono", "Menlo", "Consolas", monospace;
  font-size: 0.88em;
  background: var(--sage-soft);
  color: var(--pine);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}

/* ---------- Numbered steps ---------- */
.steps {
  list-style: none;
  counter-reset: step;
  margin-top: 2.5rem;
  display: grid;
  gap: 1.5rem;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 4rem;
  max-width: 62ch;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--sage);
  color: var(--cream);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps h3 {
  font-size: 1.15rem;
  color: var(--pine);
  margin-bottom: 0.35rem;
}

.steps p {
  color: var(--earth);
  font-size: 0.98rem;
}

/* ---------- Chips ---------- */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  display: inline-block;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--pine);
  background: var(--sage-soft);
  border: 1px solid rgba(89, 137, 88, 0.35);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
}

/* ---------- Bot profile cards (Ecosystem) ---------- */
.bot-card .bot-tag {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--sage);
  display: block;
  margin-bottom: 0.75rem;
}

.bot-card .modality {
  margin-top: 0.9rem;
}

.bot-card .modality-label {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--earth);
  display: block;
  margin-bottom: 0.35rem;
}

/* ---------- Callout ---------- */
.callout {
  background: var(--sage-soft);
  border-left: 4px solid var(--sage);
  border-radius: 0 8px 8px 0;
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  max-width: 68ch;
}

.callout p,
.callout ul {
  color: var(--earth);
  font-size: 0.98rem;
}

.callout ul {
  margin-top: 0.5rem;
  padding-left: 1.1rem;
}

.callout li {
  margin-bottom: 0.3rem;
}

/* ---------- How-it-works layout (steps + graph) ---------- */
.how-it-works-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: stretch;
  margin-top: 2.5rem;
}

.how-it-works-steps {
  display: flex;
  flex-direction: column;
}

.steps {
  flex: 1;
}

/* ---------- Graph demo (Product) ---------- */
.graph-demo {
  padding: 2.25rem;
  background: var(--sage-soft);
  border: 1px solid rgba(89, 137, 88, 0.25);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
}

.graph-demo h3 {
  margin-top: 0;
}

.structure-viz {
  display: block;
  margin: 0 auto;
  flex: 1;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.graph-demo p {
  margin-top: auto;
  padding-top: 0.75rem;
}

@media (max-width: 900px) {
  .how-it-works-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ---------- Forms (Join, Contact) ---------- */
.form-panel {
  max-width: 34rem;
  margin: 0 auto;
  background: #f9f7ee;
  border: 1px solid rgba(20, 52, 43, 0.12);
  border-top: 4px solid var(--sage);
  border-radius: 8px;
  padding: 2.25rem;
}

.form-panel form {
  margin-top: 1.75rem;
  display: flex;
  flex-direction: column;
}

.field {
  margin-bottom: 1.25rem;
}

.field label {
  display: block;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--pine);
  margin-bottom: 0.35rem;
}

.field input,
.field textarea {
  width: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 1rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid rgba(20, 52, 43, 0.25);
  border-radius: 6px;
  padding: 0.65rem 0.85rem;
}

.field input:focus,
.field textarea:focus {
  outline: 2px solid var(--sage);
  outline-offset: 1px;
  border-color: var(--sage);
}

.field textarea {
  resize: vertical;
}

.field-hint {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.82rem;
  color: var(--earth);
  margin-top: 0.35rem;
}

.field-hint.ok,
.form-status.ok {
  color: var(--sage);
  font-weight: 600;
}

.field-hint.err,
.form-status.err {
  color: #a03325;
  font-weight: 600;
}

.form-status {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.95rem;
  margin-top: 1rem;
  min-height: 1.4em;
}

.form-panel .btn {
  cursor: pointer;
  align-self: center;
  margin-top: 0.75rem;
  padding: 0.85rem 2.5rem;
  font-size: 1.05rem;
  letter-spacing: 0.3px;
}

.form-panel .btn:disabled {
  opacity: 0.6;
  cursor: default;
  transform: none;
}

/* Honeypot — visually removed, still in the DOM for bots */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ---------- Prose additions (Terms) ---------- */
.prose h2 {
  margin-top: 2.75rem;
}

.prose h3 {
  font-size: 1.2rem;
  color: var(--pine);
  margin: 2rem 0 0.75rem;
}

.prose ul {
  margin: 0 0 1.4rem 1.25rem;
  color: var(--earth);
}

.prose li {
  margin-bottom: 0.4rem;
}

.prose .fine {
  font-size: 0.92rem;
  color: var(--earth);
}

.effective-date {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.9rem;
  color: var(--earth);
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  nav.links {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.4rem 0.6rem;
    font-size: 0.75rem;
  }

  nav.links a {
    padding-bottom: 2px;
  }
}

@media (max-width: 560px) {
  .hero {
    padding: 4rem 0 3.5rem;
  }

  .btn-ghost {
    margin-left: 0;
    margin-top: 0.75rem;
  }

  .steps li {
    padding-left: 3.25rem;
  }
}