/* ---------- Fonts ---------- */
@font-face {
  font-family: "Libre Baskerville";
  src: url("fonts/LibreBaskerville-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Libre Baskerville";
  src: url("fonts/LibreBaskerville-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Libre Baskerville";
  src: url("fonts/LibreBaskerville-Italic.ttf") format("truetype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --linen: #EDEAE5;
  --ink: #242631;
  --ink-80: rgba(36, 38, 49, 0.8);
  --ink-50: rgba(36, 38, 49, 0.5);
  --umber: #7C5F4A;

  --font-serif: "Libre Baskerville", Georgia, "Times New Roman", serif;

  --content-w: 846px;
  --section-pad: 48px;
  --rule: 1px dashed rgba(36, 38, 49, 0.25);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--linen);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 24px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; padding: 0; margin: 0; }
p { margin: 0 0 16px; }
p:last-child { margin-bottom: 0; }
blockquote { margin: 0; }
figure { margin: 0; }
a { color: var(--umber); }

/* ---------- Layout ---------- */
main {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 0 16px 32px;
}

section, .hero {
  padding: var(--section-pad) 0;
  border-bottom: var(--rule);
}
.site-footer-wrap, .cta {
  border-bottom: none;
}

/* ---------- Type roles ---------- */
.section-header {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--umber);
  font-size: 22px;
  line-height: 1.2;
  margin: 0 0 32px;
  text-align: center;
}

.sub-section {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--umber);
  font-size: 16px;
  line-height: 1.2;
  margin: 0 0 8px;
}

.link {
  color: var(--umber);
  text-decoration: underline;
}

/* ---------- Site header (shrinks on scroll) ---------- */
:root { --hero-progress: 0; }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  background: var(--linen);
  z-index: 50;
  padding-top: calc(72px - 55px * var(--hero-progress));
  height: calc(153px - 97px * var(--hero-progress));
  pointer-events: none;
}
.site-header__logo {
  pointer-events: auto;
}
.site-header__logo img {
  width: calc(176px - 88px * var(--hero-progress));
  height: calc(41px - 19px * var(--hero-progress));
  display: block;
}

/* ---------- Hero ---------- */
.hero {
  padding-top: 153px;
  padding-bottom: var(--section-pad);
  text-align: center;
  border-bottom: var(--rule);
}
.hero__lede {
  font-size: 26px;
  line-height: 39px;
  color: var(--ink);
  margin: 0;
}

/* ---------- Trusted by ---------- */
.trusted {
  text-align: center;
}
.trusted__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 40px;
}
.trusted__row + .trusted__row {
  margin-top: 24px;
}
.trusted__cell {
  width: 175px;
  height: 62px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.trusted__cell img,
.testimonial__brands img {
  shape-rendering: geometricPrecision;
  text-rendering: geometricPrecision;
}
.trusted__cell img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  transform: scale(0.92);
  transform-origin: center;
}
.trusted__cell img.brand--mirror { width: 115px; height: 38px; }

/* ---------- Experience ---------- */
.experience {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 26px;
}
.experience__portrait {
  width: 315px;
  height: auto;
  flex-shrink: 0;
  mix-blend-mode: multiply;
}
.experience__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.experience__body .section-header {
  text-align: left;
  margin: 0;
}
.experience__body .experience__body-text {
  margin: 0;
}

/* ---------- Testimonial ---------- */
.testimonial {
  text-align: center;
}
.testimonial__heading {
  margin-bottom: 24px;
}
.testimonial__carousel {
  position: relative;
  max-width: 864px;
  margin: -32px auto 8px;
}
.testimonial__viewport {
  position: relative;
  padding-top: 32px;
  overflow: hidden;
}
.testimonial__nav {
  position: absolute;
  top: calc(50% + 16px);
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 0;
  padding: 0 4px;
  margin: 0;
  cursor: pointer;
  color: var(--umber);
  font-family: var(--font-serif);
  font-size: 44px;
  line-height: 1;
  font-weight: 400;
  transition: color 150ms ease;
  z-index: 2;
}
.testimonial__nav:hover,
.testimonial__nav:focus-visible { color: var(--ink); }
.testimonial__nav:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
  border-radius: 2px;
}
.testimonial__nav--prev { left: 12px; }
.testimonial__nav--next { right: 12px; }
.testimonial__nav--prev::before { content: '\2039'; }
.testimonial__nav--next::before { content: '\203A'; }
.testimonial__track {
  display: flex;
  width: 100%;
  transition: transform 420ms cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}
.testimonial__slide {
  flex: 0 0 100%;
  min-width: 0;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
}
.testimonial__slide-inner {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 32px;
  box-sizing: border-box;
}
.testimonial__quote-wrap {
  position: relative;
  margin: 0 0 32px;
}
.testimonial__ghost {
  position: absolute;
  top: -32px;
  left: -32px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 144px;
  line-height: 1;
  letter-spacing: -0.06em;
  color: var(--umber);
  opacity: 0.10;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.testimonial__mark--close {
  display: inline-block;
  font-size: 22px;
  line-height: 22px;
  vertical-align: -0.25em;
  margin-left: 4px;
}
.testimonial__quote {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0;
  font-size: 16px;
  line-height: 24px;
  color: var(--ink);
  font-weight: 400;
}
.testimonial__attribution {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 0 0 16px;
}
.testimonial__attribution img {
  width: 53px;
  height: 53px;
  border-radius: 50%;
  object-fit: cover;
}
.testimonial__attribution figcaption {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}
.testimonial__name {
  font-weight: 700;
  color: var(--ink);
  font-size: 12px;
  line-height: 17px;
}
.testimonial__role {
  color: var(--ink-50);
  font-size: 12px;
  line-height: 17px;
}
.testimonial__brands-viewport {
  overflow: hidden;
  max-width: 640px;
  margin: 0 auto;
}
.testimonial__brands {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  transition: transform 420ms cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}
.testimonial__brands li {
  flex: 0 0 128px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.testimonial__brands img {
  display: block;
  width: auto;
  height: 24px;
  opacity: 0.3;
  transition: opacity 150ms ease;
}
.testimonial__brands img.tbrand--codecademy { height: 20px; }
.testimonial__brands .is-focus img { opacity: 1; }
.testimonial__brand-btn {
  background: none;
  border: 0;
  padding: 0;
  margin: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
}
.testimonial__brand-btn:hover img,
.testimonial__brand-btn:focus-visible img { opacity: 1; }
.testimonial__brand-btn:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 6px;
  border-radius: 2px;
}

/* ---------- Details ---------- */
.details__topic {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  align-items: start;
}
.details__topic + .details__topic {
  margin-top: 40px;
}
.details__label {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--umber);
  font-size: 18px;
  line-height: 1.2;
  margin: 0;
}

/* ---------- CTA ---------- */
.cta {
  text-align: center;
}
.cta__heading {
  margin-bottom: 24px;
}
.cta p {
  margin: 0;
}

/* ---------- Footer ---------- */
.site-footer {
  text-align: center;
  padding: 32px 16px 48px;
  color: var(--ink);
  font-size: 16px;
  line-height: 24px;
}

/* ---------- Responsive: below 900px ---------- */
@media (max-width: 900px) {
  main { padding: 0 24px 32px; }

  .site-header {
    padding-top: calc(40px - 23px * var(--hero-progress));
    height: calc(121px - 65px * var(--hero-progress));
  }
  .site-header__logo img {
    width: calc(160px - 88px * var(--hero-progress));
    height: auto;
  }

  .hero { padding-top: 121px; padding-bottom: 40px; }

  .hero__lede {
    font-size: 20px;
    line-height: 30px;
  }

  section { padding-top: 40px; padding-bottom: 40px; }

  .trusted__cell { width: 140px; height: 56px; }

  .experience {
    flex-direction: column;
    gap: 24px;
    align-items: center;
  }
  .experience__portrait { width: 240px; }
  .experience__body .section-header { text-align: center; }

  .details__topic {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .details__topic + .details__topic {
    margin-top: 32px;
  }
}

/* ---------- Responsive: small mobile ---------- */
@media (max-width: 480px) {
  .trusted__cell { width: 45%; height: 48px; }
  .testimonial__attribution {
    flex-direction: column;
    text-align: center;
  }
  .testimonial__attribution figcaption {
    align-items: center;
    text-align: center;
  }
}