:root {
  color-scheme: light dark;
  --background: #f7f5ef;
  --text: #243c30;
  --muted: #526458;
  --accent: #315d43;
  --panel: #ebece3;
  --bubble: #fffefa;
  --learner: #d8e6d5;
  --border: #ccd2c6;
  --focus: #176a42;
  --radius: 1.5rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --background: #17221c;
    --text: #e6ece0;
    --muted: #b2bfb1;
    --accent: #bdd2ac;
    --panel: #25352b;
    --bubble: #33463a;
    --learner: #425b3e;
    --border: #455647;
    --focus: #c5e3a8;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  line-height: 1.6;
}
a {
  color: inherit;
  text-underline-offset: 0.3em;
}
a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 6px;
  border-radius: 3px;
}
a:hover {
  color: var(--accent);
}
.shell {
  max-width: 1240px;
  margin: auto;
  padding: 0 5%;
}
.site-header {
  min-height: 120px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}
.brand {
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: -0.09em;
  text-decoration: none;
}
.brand span {
  font-weight: 750;
}
.brand .brand-dot {
  color: var(--accent);
}
.site-header > a:last-child,
footer {
  font-size: 0.9rem;
}
.landing {
  min-height: 610px;
  padding: 60px 0 100px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 7%;
  align-items: center;
}
h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  font-size: clamp(3rem, 5.3vw, 4.8rem);
  letter-spacing: -0.05em;
  line-height: 1.08;
  margin: 0 0 1.6rem;
}
h1 em {
  color: var(--accent);
}
.intro {
  max-width: 470px;
  font-size: 1.15rem;
  line-height: 1.7;
}
.availability {
  max-width: 390px;
  color: var(--muted);
  font-size: 0.93rem;
  margin: 1.8rem 0;
}
.contact-link {
  display: inline-flex;
  gap: 2rem;
  font-weight: 600;
}
.conversation {
  background: var(--panel);
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.conversation-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-bottom: 1.6rem;
}
.avatar {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  background: var(--text);
  color: var(--background);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 2rem;
}
.conversation h2 {
  margin: 0;
  font-size: 1.05rem;
}
.conversation-top p {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
}
.bubbles {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.bubble {
  margin: 0;
  padding: 1rem 1.2rem;
  border-radius: 1rem;
  max-width: 90%;
  font-size: 0.95rem;
}
.nico {
  align-self: flex-start;
  background: var(--bubble);
  border-bottom-left-radius: 0.2rem;
}
.learner {
  align-self: flex-end;
  background: var(--learner);
  border-bottom-right-radius: 0.2rem;
}
.example-note {
  color: var(--muted);
  font-size: 0.75rem;
  margin: 1.5rem 0 0;
}
footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.7rem 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
}
footer p {
  margin: 0;
}
.policy {
  max-width: 720px;
  margin: 40px auto 80px;
}
.policy h1 {
  font-size: clamp(2.7rem, 6vw, 4rem);
}
.policy h2 {
  margin: 2rem 0 0.5rem;
  font-size: 1.15rem;
}
.policy p {
  margin: 0.8rem 0;
}
.policy .updated {
  color: var(--muted);
  margin-bottom: 2rem;
  font-size: 0.9rem;
}
@media (max-width: 760px) {
  .shell {
    padding: 0 6%;
  }
  .site-header {
    min-height: 90px;
  }
  .landing {
    grid-template-columns: 1fr;
    gap: 3rem;
    padding: 35px 0 60px;
  }
  .hero-copy {
    max-width: 560px;
  }
  .conversation {
    max-width: 480px;
    padding: 1.4rem;
  }
  footer {
    flex-wrap: wrap;
  }
  .policy {
    margin-top: 30px;
  }
}