.fb-page {
  --fb-ink: #18392e;
  --fb-muted: #617469;
  --fb-green: #236d4b;
  --fb-paper: #f8faf6;
  --fb-line: #dce5dc;
  background: var(--fb-paper);
  color: var(--fb-ink);
  font-size: 16px;
  line-height: 1.75;
  padding-bottom: 60px;
}
.fb-page * {
  box-sizing: border-box;
}
.fb-container {
  width: min(1220px, calc(100% - 64px));
  margin: auto;
}
.fb-series-bar {
  border-bottom: 1px solid var(--fb-line);
  background: #fff;
}
.fb-series-bar > .fb-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  gap: 20px;
}
.fb-series-bar a {
  color: var(--fb-ink);
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.09em;
}
.fb-mark {
  display: inline-grid;
  place-items: center;
  background: var(--fb-ink);
  color: #d8f392;
  width: 34px;
  height: 34px;
  margin-right: 12px;
  border-radius: 7px;
  font: 700 17px monospace;
}
.fb-series-label {
  color: var(--fb-muted);
  font-weight: 500;
  margin-left: 20px;
  font-size: 10px;
}
.fb-day-count {
  font: 11px monospace;
  white-space: nowrap;
  color: var(--fb-muted);
}
.fb-day-count strong {
  font-size: 20px;
  color: var(--fb-ink);
}
.fb-hero {
  padding: 64px 0 60px;
  background: radial-gradient(ellipse at 85% 30%, #e8f1dc 0, transparent 55%);
}
.fb-hero-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 65px;
  align-items: center;
}
.fb-eyebrow,
.fb-section-index {
  font-size: 10px !important;
  letter-spacing: 0.15em;
  font-weight: 800;
  color: var(--fb-green);
  margin: 0 0 16px;
}
.fb-hero h1 {
  font-size: clamp(34px, 3.4vw, 49px);
  font-weight: 750;
  line-height: 1.17;
  letter-spacing: -0.045em;
  margin: 0 0 22px;
}
.fb-hero h1 em {
  font-style: normal;
  color: #4e725c;
}
.fb-hero-copy {
  max-width: 550px;
  font-size: 17px;
  color: var(--fb-muted);
}
.fb-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 11px;
  color: var(--fb-muted);
  margin-top: 26px;
}
.fb-meta i {
  margin-right: 5px;
}
.fb-field-card {
  padding: 30px;
  background: #18392e;
  color: #eaf2e6;
  border-radius: 14px;
  box-shadow: 0 16px 40px #244b2512;
  transform: rotate(1deg);
}
.fb-field-card > div {
  font: 9px monospace;
  letter-spacing: 0.12em;
  color: #b4c9b7;
  display: flex;
  gap: 8px;
  align-items: center;
}
.fb-status-dot {
  height: 6px;
  width: 6px;
  border-radius: 50%;
  background: #bde887;
}
.fb-field-card p {
  font-size: 30px;
  line-height: 1.25;
  letter-spacing: -0.04em;
  margin: 30px 0 20px;
}
.fb-field-card code {
  display: block;
  font: 11px/1.8 Consolas, monospace;
  color: #d5edaa;
  border-top: 1px solid #ffffff24;
  padding-top: 18px;
  white-space: normal;
}
.fb-field-card > span {
  display: block;
  font: 8px monospace;
  color: #a5b9a7;
  letter-spacing: 0.1em;
  margin-top: 25px;
}
.fb-layout {
  display: grid;
  grid-template-columns: 245px minmax(0, 1fr);
  gap: 64px;
  align-items: start;
  padding-top: 40px;
}
.fb-sidebar {
  position: sticky;
  top: 100px;
}
.fb-sidebar ol {
  list-style: none;
  padding: 0;
  margin: 0;
}
.fb-sidebar li {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 17px 12px;
  margin-left: -12px;
  border-radius: 8px;
}
.fb-sidebar li.is-current {
  background: #e7efdf;
}
.fb-step-number {
  font: 12px monospace;
  color: #536951;
}
.fb-sidebar strong {
  display: block;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.5;
}
.fb-sidebar small {
  font-size: 9px;
  color: var(--fb-muted);
}
.fb-sidebar li > i {
  margin-left: auto;
  font-size: 12px;
  color: #91a191;
}
.fb-sidebar-note {
  border-top: 1px solid var(--fb-line);
  margin-top: 24px;
  padding-top: 24px;
  display: flex;
  gap: 12px;
  color: var(--fb-muted);
  font-size: 11px;
}
.fb-sidebar-note i {
  font-size: 18px;
}
.fb-quiet-link {
  font-size: 11px;
  color: var(--fb-green);
  text-underline-offset: 4px;
}
.fb-lesson {
  min-width: 0;
  max-width: 850px;
}
.fb-lesson h2 {
  font-size: 30px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.035em;
  margin: 0 0 20px;
}
.fb-lesson h3 {
  font-size: 19px;
  line-height: 1.4;
  font-weight: 650;
  margin: 26px 0 12px;
  letter-spacing: -0.02em;
}
.fb-lesson p {
  margin-bottom: 18px;
}
.fb-lesson p:last-child {
  margin-bottom: 0;
}
.fb-lesson a {
  color: var(--fb-green);
  text-underline-offset: 3px;
}
.fb-lesson p a {
  text-decoration: underline;
}
.fb-lesson code {
  font-family: Consolas, "Courier New", monospace;
}
.fb-lesson p code,
.fb-lesson li code,
.fb-lesson h3 code {
  color: #2a654a;
  background: #eaf0e5;
  border-radius: 4px;
  padding: 2px 4px;
  font-size: 0.86em;
  overflow-wrap: anywhere;
}
.fb-outcome {
  border: 1px solid #cddcc4;
  background: #f0f5e9;
  padding: 23px 26px;
  border-radius: 10px;
}
.fb-outcome span,
.fb-checkpoint > span {
  font-size: 9px;
  letter-spacing: 0.14em;
  font-weight: 800;
  color: var(--fb-green);
}
.fb-outcome p {
  margin: 7px 0 0 !important;
  font-size: 17px;
  font-weight: 600;
}
.fb-section {
  padding: 45px 0;
  border-bottom: 1px solid var(--fb-line);
}
.fb-section-index {
  color: #536e54;
}
.fb-callout,
.fb-checkpoint {
  padding: 24px 26px;
  border-left: 3px solid #a5bd8e;
  background: #edf2e8;
  margin: 26px 0;
  border-radius: 0 8px 8px 0;
}
.fb-callout p,
.fb-checkpoint p {
  font-size: 14px;
}
.fb-callout strong {
  display: block;
  margin-bottom: 8px;
}
.fb-checkpoint h3 {
  margin: 9px 0;
}
.fb-tools,
.fb-tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin: 25px 0;
}
.fb-tools > *,
.fb-tool-grid > * {
  border: 1px solid var(--fb-line);
  border-radius: 9px;
  background: #fff;
  padding: 22px;
}
.fb-tools h3,
.fb-tool-grid h3 {
  margin: 0 0 8px;
}
.fb-tools p,
.fb-tool-grid p {
  font-size: 13px;
}
.fb-caption {
  font-size: 11px !important;
  color: var(--fb-muted);
  line-height: 1.7;
  margin: 12px 0 24px !important;
}
.fb-source,
.fb-command-block {
  background: #142820;
  border: 1px solid #294235;
  border-radius: 10px;
  overflow: hidden;
  margin: 24px 0;
  color: #e2e9df;
}
.fb-source summary {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  color: #edf3e8;
  font: 13px/1.6 Consolas, monospace;
}
.fb-source summary::-webkit-details-marker {
  display: none;
}
.fb-source[open] summary > span:last-child {
  transform: rotate(45deg);
}
.fb-source summary small {
  font: 8px sans-serif;
  letter-spacing: 0.12em;
  color: #b4c2b6;
  margin-left: 12px;
}
.fb-code-toolbar,
.fb-command-block > div {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 12px 20px;
  background: #ffffff06;
  border-bottom: 1px solid #ffffff13;
  font: 9px/1.7 sans-serif;
  letter-spacing: 0.04em;
  color: #aebeb0;
}
.fb-code-toolbar button {
  margin-left: auto;
}
.fb-code-toolbar button,
.fb-command-block button,
.fb-terminal-actions button {
  border: 1px solid #68836b;
  border-radius: 5px;
  background: transparent;
  color: #dcefc7;
  padding: 5px 9px;
  font: 10px sans-serif;
  cursor: pointer;
}
.fb-code-toolbar a {
  font: 10px sans-serif;
  color: #dcefc7;
}
.fb-command-block > div {
  justify-content: space-between;
}
.fb-page pre {
  margin: 0;
  padding: 22px 20px;
  white-space: pre;
  overflow: auto;
  max-width: 100%;
  tab-size: 4;
  line-height: 1.8;
}
.fb-page pre code {
  font: 12px/1.8 Consolas, "Courier New", monospace;
  color: inherit;
  background: none;
  display: block;
  min-width: max-content;
}
.fb-token-comment {
  color: #91a894;
}
.fb-token-string {
  color: #d8e9a0;
}
.fb-token-number {
  color: #ffc59c;
}
.fb-token-opcode {
  color: #93d8f4;
}
.fb-token-register {
  color: #d4baff;
}
.fb-token-directive {
  color: #f2b8ca;
}
.fb-token-label {
  color: #f1dc97;
}
.fb-terminal {
  background: #101e18;
  color: #d8efb3;
  border: 1px solid #314a37;
  border-radius: 10px;
  overflow: hidden;
  margin: 22px 0;
}
.fb-terminal > div:first-child {
  padding: 12px 20px;
  border-bottom: 1px solid #ffffff15;
  font: 9px monospace;
  color: #97ac94;
  letter-spacing: 0.06em;
}
.fb-terminal pre {
  font: 15px/1.8 Consolas, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  min-height: 110px;
}
.fb-faq details {
  border-bottom: 1px solid var(--fb-line);
}
.fb-faq summary {
  font-size: 14px;
  font-weight: 650;
  padding: 18px 30px 18px 0;
  cursor: pointer;
}
.fb-faq details p {
  font-size: 13px;
  padding-bottom: 20px;
}
.fb-faq details[open] summary {
  color: var(--fb-green);
}
.fb-join {
  background: #e7efdd;
  border: 1px solid #d1ddc5;
  padding: 36px;
  border-radius: 12px;
  margin-top: 44px;
  scroll-margin-top: 100px;
}
.fb-join > p {
  font-size: 14px;
}
.fb-email-form label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  margin: 22px 0 8px;
}
.fb-email-form > div {
  display: flex;
  gap: 10px;
}
.fb-email-form input,
.fb-message-lab input {
  min-width: 0;
  flex: 1;
  width: 100%;
  background: #fff;
  border: 1px solid #bccbb4;
  border-radius: 7px;
  padding: 13px 14px;
  color: var(--fb-ink);
  font-family: inherit;
  font-size: 14px;
}
.fb-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 14px 20px;
  background: #25633f;
  color: #fff !important;
  border: 0;
  border-radius: 7px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  text-decoration: none;
  cursor: pointer;
}
.fb-button:hover {
  background: #194d2d;
  color: #fff;
}
.fb-prototype-note {
  font-size: 10px !important;
  color: #53634f;
  margin: 14px 0 0 !important;
}
.fb-error {
  font-size: 12px;
  color: #973a29;
  margin-top: 10px;
}
.fb-next-note {
  display: flex;
  gap: 20px;
  border: 1px dashed #b7c7ae;
  border-radius: 10px;
  padding: 27px;
  margin-top: 38px;
}
.fb-mail-icon {
  font-size: 25px;
  color: #507443;
}
.fb-next-note .fb-eyebrow {
  margin-bottom: 6px;
}
.fb-next-note h3 {
  margin: 0 0 10px;
}
.fb-next-note p {
  font-size: 13px;
}
.fb-next-note small {
  font-size: 10px;
  color: var(--fb-muted);
}
.fb-lesson-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--fb-muted);
  font-size: 10px;
  padding-top: 40px;
}
.fb-message-lab,
.fb-memory-lab,
.fb-quiz {
  border: 1px solid #ccd9c4;
  border-radius: 10px;
  padding: 25px;
  background: #f0f5e9;
  margin: 26px 0;
}
.fb-lab-heading {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font: 9px monospace;
  color: var(--fb-muted);
  margin-bottom: 20px;
  letter-spacing: 0.06em;
}
.fb-message-lab label {
  display: block;
  font-size: 12px;
  font-weight: 650;
  margin-bottom: 8px;
}
.fb-message-lab [data-fb-message-bytes] {
  font: 11px/1.8 monospace;
  overflow-wrap: anywhere;
  display: block;
  color: #b5c7a0;
  padding: 14px 20px;
  border-top: 1px solid #ffffff15;
}
.fb-memory-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.fb-memory-buttons button,
.fb-quiz button {
  background: #fff;
  border: 1px solid #c5d3bc;
  border-radius: 6px;
  padding: 12px;
  color: var(--fb-ink);
  font-size: 12px;
  cursor: pointer;
  text-align: left;
}
.fb-memory-buttons small {
  display: block;
  font-size: 9px;
  margin-top: 7px;
}
.fb-memory-buttons [aria-pressed="true"] {
  background: #285b3b;
  color: #fff;
  border-color: #285b3b;
}
.fb-memory-readout {
  margin-top: 24px;
}
.fb-memory-readout strong {
  font: 22px/1.5 monospace;
  overflow-wrap: anywhere;
}
.fb-memory-readout p {
  font-size: 13px;
  margin-top: 12px;
  min-height: 48px;
}
.fb-quiz h3 {
  margin: 0 0 15px;
}
.fb-quiz > div {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.fb-quiz [data-fb-quiz-feedback] {
  font-size: 12px;
  margin: 18px 0 0;
  min-height: 40px;
}
.fb-quiz button[aria-pressed="true"] {
  border-color: #285b3b;
  background: #dfead5;
}
.fb-numbered {
  padding-left: 24px;
}
.fb-numbered li {
  padding-left: 9px;
  margin: 22px 0;
}
.fb-numbered strong {
  font-size: 15px;
}
.fb-numbered p {
  font-size: 14px;
  margin: 5px 0;
}
.fb-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0;
}
.fb-flow > * {
  padding: 10px 15px;
  border: 1px solid var(--fb-line);
  border-radius: 6px;
  font: 12px monospace;
}
.fb-keyboard-lab pre {
  min-height: 0;
  padding-bottom: 10px;
}
.fb-keyboard-lab input {
  display: block;
  width: calc(100% - 40px);
  margin: 0 20px 20px;
  color: #d8efb3;
  background: transparent;
  border: 0;
  border-bottom: 1px solid #405a43;
  font: 15px/1.8 Consolas, monospace;
  border-radius: 0;
  padding: 8px 0;
}
.fb-keyboard-lab input::placeholder {
  color: #899f7c;
}
.fb-keyboard-lab input:disabled {
  opacity: 0.7;
}
.fb-terminal-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 20px;
  font: 10px monospace;
  border-top: 1px solid #ffffff15;
  color: #a5bb97;
}
.fb-recap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 25px 0;
}
.fb-recap span {
  font-size: 12px;
  background: #e8efdf;
  padding: 12px 16px;
  border-radius: 6px;
}
.fb-course-path {
  display: grid;
  gap: 16px;
}
.fb-course-path article {
  padding: 24px;
  border: 1px solid var(--fb-line);
  border-radius: 9px;
  background: #fff;
}
.fb-course-path article > span {
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--fb-green);
  font-weight: 700;
}
.fb-course-path h3 {
  margin: 10px 0;
}
.fb-course-path p {
  font-size: 14px;
}
.fb-course-path strong {
  font-size: 12px;
}
.fb-offer-card {
  padding: 40px;
  background: #18392e;
  color: #f4f6ec;
  border-radius: 12px;
  margin-top: 40px;
}
.fb-offer-card .fb-eyebrow {
  color: #c3df9f;
}
.fb-offer-card h2 {
  font-size: 34px;
}
.fb-offer-card em {
  font-style: normal;
  color: #d2e8ae;
}
.fb-offer-card p {
  font-size: 15px;
  color: #c4d2c2;
}
.fb-offer-card .fb-button {
  background: #d2e8ae;
  color: #193e2b !important;
  margin: 8px 0 14px;
}
.fb-offer-card small {
  display: block;
  color: #b1c4af;
  font-size: 10px;
}
.fb-part-two {
  display: block;
  color: #dce9cd !important;
  font-size: 12px;
  margin-top: 25px;
}
.fb-peachos-demo {
  margin: 25px 0;
}
.fb-peachos-demo .ko-demo {
  width: 100%;
  margin: 0;
}
.fb-peachos-demo .ko-file-code pre {
  padding: 6px 0;
}
.fb-page .fb-peachos-demo .ko-file-code code {
  min-width: 100%;
  font: 11px/16px Consolas, "Courier New", monospace;
  color: #d7e5de;
}
.fb-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.fb-page :focus-visible {
  outline: 3px solid #b7d274;
  outline-offset: 4px;
}
.fb-locked {
  min-height: 65vh;
  display: grid;
  place-items: center;
  padding: 60px 24px;
}
.fb-locked-card {
  max-width: 560px;
  padding: 42px;
  background: #fff;
  border: 1px solid var(--fb-line);
  border-radius: 14px;
}
.fb-locked-card h1 {
  font-size: 35px;
  line-height: 1.2;
  letter-spacing: -0.04em;
}
.fb-locked-card p {
  font-size: 14px;
}
.fb-locked-card .fb-button {
  margin: 15px 0;
}
.fb-locked-card small {
  display: block;
  font-size: 11px;
  color: var(--fb-muted);
}
@media (min-width: 1450px) {
  .fb-container {
    width: min(1280px, calc(100% - 80px));
  }
  .fb-layout {
    gap: 90px;
  }
}
@media (max-width: 1000px) {
  .fb-hero-grid {
    gap: 30px;
    grid-template-columns: 1.5fr 1fr;
  }
  .fb-field-card {
    padding: 22px;
  }
  .fb-field-card p {
    font-size: 25px;
  }
  .fb-layout {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 30px;
  }
  .fb-sidebar strong {
    font-size: 11px;
  }
  .fb-sidebar li > i {
    display: none;
  }
  .fb-series-label {
    display: none;
  }
  .fb-code-toolbar {
    gap: 10px;
  }
}
@media (max-width: 760px) {
  .fb-container {
    width: calc(100% - 36px);
  }
  .fb-hero {
    padding: 35px 0;
  }
  .fb-hero-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .fb-hero h1 {
    font-size: 37px;
  }
  .fb-hero-copy {
    font-size: 15px;
  }
  .fb-field-card {
    transform: none;
    padding: 20px;
  }
  .fb-field-card p {
    font-size: 23px;
    margin: 17px 0;
  }
  .fb-field-card > span {
    display: none;
  }
  .fb-field-card code {
    padding-top: 12px;
  }
  .fb-layout {
    display: block;
    padding-top: 25px;
  }
  .fb-sidebar {
    position: static;
    margin-bottom: 30px;
  }
  .fb-sidebar > .fb-eyebrow,
  .fb-sidebar-note,
  .fb-sidebar > .fb-quiet-link,
  .fb-sidebar small,
  .fb-sidebar li > i {
    display: none;
  }
  .fb-sidebar ol {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 4px;
  }
  .fb-sidebar li {
    display: block;
    text-align: center;
    padding: 10px 3px;
    margin: 0;
  }
  .fb-sidebar strong {
    font-size: 9px;
    margin-top: 6px;
    line-height: 1.4;
  }
  .fb-step-number {
    font-size: 12px;
  }
  .fb-section {
    padding: 32px 0;
  }
  .fb-lesson h2 {
    font-size: 27px;
  }
  .fb-outcome {
    padding: 19px;
  }
  .fb-outcome p {
    font-size: 15px;
  }
  .fb-join,
  .fb-offer-card {
    padding: 25px 20px;
  }
  .fb-email-form > div {
    flex-direction: column;
  }
  .fb-page pre {
    padding: 17px 14px;
  }
  .fb-page pre code {
    font-size: 11px;
  }
  .fb-source summary {
    padding: 14px;
  }
  .fb-source summary small {
    display: block;
    margin: 5px 0 0;
  }
  .fb-code-toolbar {
    padding: 12px 14px;
  }
  .fb-code-toolbar > span {
    width: 100%;
  }
  .fb-code-toolbar button {
    margin-left: 0;
  }
  .fb-tools,
  .fb-tool-grid {
    grid-template-columns: 1fr;
  }
  .fb-memory-buttons {
    gap: 5px;
  }
  .fb-memory-buttons button {
    font-size: 10px;
    padding: 9px 6px;
  }
  .fb-memory-buttons small {
    font-size: 8px;
  }
  .fb-message-lab,
  .fb-memory-lab,
  .fb-quiz {
    padding: 18px;
  }
  .fb-memory-readout strong {
    font-size: 18px;
  }
  .fb-next-note {
    padding: 20px;
    gap: 12px;
  }
  .fb-next-note h3 {
    font-size: 17px;
  }
  .fb-recap {
    gap: 8px;
  }
  .fb-recap span {
    font-size: 10px;
    padding: 10px;
  }
  .fb-offer-card h2 {
    font-size: 29px;
  }
  .fb-offer-card .fb-button {
    font-size: 12px;
    gap: 10px;
  }
  .fb-locked-card {
    padding: 28px;
  }
  .fb-locked-card h1 {
    font-size: 29px;
  }
}