/* =========================================================
   Design tokens
========================================================= */
:root {
  --ink: #101b17;
  --ink-soft: #3c4a44;
  --paper: #f6f4ee;
  --surface: #ffffff;
  --line: #dad5c8;
  --accent: #1f9d6b;
  --accent-ink: #0e3d2a;
  --amber: #e3a63e;
  --radius-sm: 6px;
  --radius-md: 10px;
  --max: 1120px;
  --font-display: "Space Grotesk", "Inter", -apple-system, sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
}
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}
h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  margin: 0;
  letter-spacing: -0.01em;
}
p {
  margin: 0;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* =========================================================
   Nav
========================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(246, 244, 238, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--ink);
}
.brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(31, 157, 107, 0.18);
  flex: none;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.nav-links a:hover {
  color: var(--ink);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 18px;
}

/* =========================================================
   Buttons
========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.96rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease;
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--accent-ink);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-ghost:hover {
  border-color: var(--ink);
}
.btn-sm {
  padding: 10px 18px;
  font-size: 0.88rem;
}
.btn-block {
  width: 100%;
}

/* =========================================================
   Hero
========================================================= */
.hero {
  padding: 88px 0 96px;
  border-bottom: 1px solid var(--line);
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--ink-soft);
  margin-bottom: 22px;
}
.eyebrow .pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  position: relative;
}
.eyebrow .pulse::after {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  opacity: 0.5;
}
.hero h1 {
  font-size: clamp(2.4rem, 4.2vw, 3.6rem);
  color: var(--ink);
}
.hero h1 em {
  font-style: normal;
  color: var(--accent-ink);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 3px;
  text-underline-offset: 6px;
}
.hero-sub {
  margin-top: 22px;
  font-size: 1.12rem;
  color: var(--ink-soft);
  max-width: 46ch;
}
.hero-actions {
  margin-top: 34px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-note {
  margin-top: 18px;
  font-size: 0.86rem;
  color: var(--ink-soft);
}

/* Conversation mockup */
.thread {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: 0 1px 0 var(--line);
  position: relative;
}
.thread-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 18px;
}
.thread-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #135c40);
  flex: none;
}
.thread-head strong {
  font-size: 0.92rem;
}
.thread-head span {
  display: block;
  font-size: 0.78rem;
  color: var(--accent-ink);
}
.thread-head span::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 5px;
}
.bubble {
  max-width: 82%;
  padding: 11px 14px;
  border-radius: 12px;
  font-size: 0.9rem;
  margin-bottom: 12px;
  line-height: 1.45;
}
.bubble.in {
  background: var(--paper);
  border: 1px solid var(--line);
  border-bottom-left-radius: 3px;
}
.bubble.out {
  background: var(--ink);
  color: var(--paper);
  margin-left: auto;
  border-bottom-right-radius: 3px;
}
.bubble.out.accent {
  background: var(--accent-ink);
}
.typing {
  display: inline-flex;
  gap: 4px;
  padding: 12px 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  border-bottom-left-radius: 3px;
  width: fit-content;
}
.typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink-soft);
  opacity: 0.5;
}
.thread-meta {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-size: 0.76rem;
  color: var(--ink-soft);
}

/* =========================================================
   Logo strip
========================================================= */
.strip {
  padding: 44px 0;
  border-bottom: 1px solid var(--line);
}
.strip .wrap {
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.strip-label {
  font-size: 0.82rem;
  color: var(--ink-soft);
  white-space: nowrap;
}
.strip-items {
  display: flex;
  gap: 38px;
  flex-wrap: wrap;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink-soft);
  font-size: 1.02rem;
  opacity: 0.8;
}

/* =========================================================
   Feature section
========================================================= */
.section {
  padding: 96px 0;
  border-bottom: 1px solid var(--line);
}
.section-head {
  max-width: 620px;
  margin-bottom: 56px;
}
.section-head .kicker {
  color: var(--accent-ink);
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 12px;
  display: block;
}
.section-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}
.section-head p {
  margin-top: 16px;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.feature {
  background: var(--surface);
  padding: 32px 28px;
}
.feature .f-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--paper);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature h3 {
  font-size: 1.08rem;
  margin-bottom: 10px;
}
.feature p {
  color: var(--ink-soft);
  font-size: 0.94rem;
}

/* =========================================================
   How it works (sequence — numbered is appropriate here)
========================================================= */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--accent-ink);
  display: block;
  margin-bottom: 14px;
}
.step h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}
.step p {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* =========================================================
   Stats banner
========================================================= */
.stats {
  background: var(--ink);
  color: var(--paper);
}
.stats .wrap {
  padding: 68px 28px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: var(--accent);
}
.stat span {
  display: block;
  margin-top: 8px;
  font-size: 0.86rem;
  color: #c9c4b4;
}

/* =========================================================
   CTA band
========================================================= */
.cta-band {
  padding: 100px 0;
  text-align: center;
}
.cta-band h2 {
  font-size: clamp(2rem, 3.6vw, 2.8rem);
  max-width: 20ch;
  margin: 0 auto;
}
.cta-band p {
  margin: 18px auto 0;
  color: var(--ink-soft);
  max-width: 48ch;
  font-size: 1.05rem;
}
.cta-band .hero-actions {
  justify-content: center;
  margin-top: 32px;
}

/* =========================================================
   Footer
========================================================= */
footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
}
.foot-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 40px;
}
.foot-brand p {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 0.92rem;
  max-width: 32ch;
}
.foot-cols {
  display: flex;
  gap: 64px;
  flex-wrap: wrap;
}
.foot-col h4 {
  font-family: var(--font-display);
  font-size: 0.86rem;
  margin-bottom: 14px;
  color: var(--ink-soft);
  font-weight: 600;
}
.foot-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.foot-col a {
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--ink);
}
.foot-col a:hover {
  color: var(--accent-ink);
}
.foot-bottom {
  padding-top: 28px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

/* =========================================================
   Mobile nav toggle
========================================================= */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
}
.nav-toggle span::before {
  position: absolute;
  top: -6px;
}
.nav-toggle span::after {
  position: absolute;
  top: 6px;
}

/* =========================================================
   Legal pages
========================================================= */
.legal-hero {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--line);
}
.legal-hero h1 {
  font-size: clamp(2rem, 3.4vw, 2.6rem);
}
.legal-hero .updated {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}
.legal-body {
  padding: 56px 0 96px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 64px;
}
.legal-toc {
  position: sticky;
  top: 96px;
  align-self: start;
}
.legal-toc h4 {
  font-family: var(--font-display);
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-bottom: 14px;
  font-weight: 600;
}
.legal-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
}
.legal-toc a {
  display: block;
  padding: 7px 0 7px 16px;
  text-decoration: none;
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-left: -1px;
  border-left: 1px solid transparent;
}
.legal-toc a:hover {
  color: var(--ink);
  border-left-color: var(--accent);
}
.legal-content {
  max-width: 68ch;
}
.legal-content h2 {
  font-size: 1.3rem;
  margin-top: 48px;
  margin-bottom: 14px;
  scroll-margin-top: 96px;
}
.legal-content h2:first-child {
  margin-top: 0;
}
.legal-content p {
  color: var(--ink-soft);
  margin-bottom: 14px;
  font-size: 0.98rem;
}
.legal-content ul {
  color: var(--ink-soft);
  font-size: 0.98rem;
  padding-left: 20px;
  margin-bottom: 14px;
}
.legal-content li {
  margin-bottom: 8px;
}
.legal-content strong {
  color: var(--ink);
}
.callout {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 24px 0;
}

/* =========================================================
   Responsive
========================================================= */
@media (max-width: 920px) {
  .hero .wrap {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .steps {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .stats .wrap {
    grid-template-columns: repeat(2, 1fr);
  }
  .legal-body {
    grid-template-columns: 1fr;
  }
  .legal-toc {
    position: static;
  }
}
@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    inset: 72px 0 0 0;
    background: var(--paper);
    flex-direction: column;
    align-items: flex-start;
    padding: 28px;
    gap: 22px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition:
      opacity 0.18s ease,
      transform 0.18s ease;
  }
  .nav-links.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-links a {
    font-size: 1.05rem;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-cta .btn-ghost {
    display: none;
  }
  .strip .wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
  }
  .foot-top {
    flex-direction: column;
  }
}
@media (max-width: 480px) {
  .stats .wrap {
    grid-template-columns: 1fr 1fr;
    padding: 52px 22px;
  }
  .hero {
    padding: 64px 0 72px;
  }
  .section {
    padding: 64px 0;
  }
}