:root {
  --color-navy: #0f2239;
  --color-slate: #234b66;
  --color-teal: #4fa6b6;
  --color-aqua: #a6c9d2;
  --color-border: #d7e1e6;
  --color-off-white: #f4f7f8;
  --color-white: #ffffff;
  --content-width: 960px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--color-navy);
  background: var(--color-off-white);
  font-family:
    ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.65;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.site-header,
.page-shell,
.site-footer {
  width: min(100% - 40px, var(--content-width));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  text-decoration: none;
}

.brand__logo {
  width: 190px;
  height: auto;
}

.brand__text {
  display: none;
  color: var(--color-navy);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0;
}

.brand__logo.is-hidden + .brand__text {
  display: inline;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--color-slate);
  font-size: 0.95rem;
}

.site-nav a {
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.footer-nav a:hover,
.footer-nav a:focus-visible,
.text-link:hover,
.text-link:focus-visible,
.button-link:hover,
.button-link:focus-visible {
  color: var(--color-teal);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 320px);
  align-items: center;
  gap: clamp(32px, 7vw, 72px);
  padding: clamp(56px, 10vw, 108px) 0 clamp(52px, 8vw, 88px);
}

.intro__copy {
  max-width: 680px;
}

.intro__image {
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-white);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.03;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 6px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0;
}

.intro p,
.content-section p,
.work-item p {
  color: var(--color-slate);
}

.intro p {
  max-width: 640px;
  margin-bottom: 26px;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.text-link {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  color: var(--color-navy);
  font-weight: 700;
  text-decoration-color: var(--color-aqua);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 46px;
  border: 1px solid var(--color-navy);
  border-radius: 8px;
  padding: 10px 18px;
  background: var(--color-navy);
  color: var(--color-white);
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
}

.button-link:hover,
.button-link:focus-visible {
  border-color: var(--color-teal);
  background: var(--color-white);
}

.eyebrow {
  margin-bottom: 10px;
  color: var(--color-teal);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.app-summary {
  font-size: 1.02rem;
}

.word-ladder-demo {
  display: grid;
  gap: 10px;
  width: min(100%, 280px);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 22px;
  background: var(--color-white);
}

.word-ladder-demo span {
  display: block;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--color-navy);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.2;
  text-align: center;
}

.content-section {
  max-width: 720px;
  border-top: 1px solid var(--color-border);
  padding: clamp(42px, 7vw, 64px) 0;
}

.content-section p,
.content-section li {
  margin-bottom: 0;
  font-size: 1.05rem;
}

.content-section p + p {
  margin-top: 16px;
}

.content-page {
  padding-top: clamp(42px, 8vw, 76px);
}

.page-heading {
  max-width: 720px;
  padding-bottom: clamp(36px, 7vw, 58px);
}

.page-heading h1 {
  margin-bottom: 16px;
}

.page-heading p {
  color: var(--color-slate);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  max-width: 900px;
}

.screenshot-card {
  position: relative;
  min-height: 260px;
  margin: 0;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(244, 247, 248, 0.92)),
    var(--color-white);
}

.screenshot-trigger {
  display: block;
  width: 100%;
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  cursor: zoom-in;
}

.screenshot-trigger:focus-visible {
  outline: 3px solid var(--color-teal);
  outline-offset: 4px;
  border-radius: 10px;
}

.screenshot-card img {
  aspect-ratio: 9 / 16;
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-off-white);
  object-fit: cover;
}

.screenshot-card.has-missing-image::before {
  content: "";
  display: block;
  aspect-ratio: 9 / 16;
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background:
    linear-gradient(135deg, transparent 48%, var(--color-border) 49%, var(--color-border) 51%, transparent 52%),
    linear-gradient(45deg, transparent 48%, var(--color-border) 49%, var(--color-border) 51%, transparent 52%),
    var(--color-white);
}

.screenshot-card figcaption {
  margin-top: 12px;
  color: var(--color-slate);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.35;
}

.image-viewer {
  max-width: min(94vw, 960px);
  max-height: 94vh;
  border: 0;
  padding: 0;
  background: transparent;
}

.image-viewer::backdrop {
  background: rgba(16, 25, 31, 0.78);
}

.image-viewer__frame {
  display: grid;
  gap: 12px;
  justify-items: end;
}

.image-viewer__close {
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  padding: 8px 14px;
  background: rgba(16, 25, 31, 0.86);
  color: var(--color-white);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

.image-viewer__close:focus-visible {
  outline: 3px solid var(--color-white);
  outline-offset: 3px;
}

.image-viewer__image {
  display: block;
  max-width: min(94vw, 960px);
  max-height: calc(94vh - 54px);
  border-radius: 10px;
  background: var(--color-white);
  box-shadow: 0 22px 70px rgba(16, 25, 31, 0.34);
  object-fit: contain;
}

.feature-list,
.faq-list {
  display: grid;
  gap: 24px;
}

.faq-list article {
  display: grid;
  gap: 6px;
}

.faq-list p {
  color: var(--color-slate);
}

.work-list {
  display: grid;
  gap: 24px;
}

.work-item {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 24px;
}

.work-item p {
  margin-bottom: 0;
}

.contact {
  padding-bottom: clamp(54px, 8vw, 82px);
}

.contact p {
  margin-bottom: 16px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--color-border);
  padding: 24px 0 34px;
  color: var(--color-slate);
  font-size: 0.92rem;
}

.site-footer p {
  margin: 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-nav a {
  color: var(--color-slate);
  text-decoration: none;
}

.is-hidden {
  display: none;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }

  .site-nav {
    gap: 20px;
  }

  .intro {
    grid-template-columns: 1fr;
  }

  .intro__image {
    max-width: 360px;
  }

  .work-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .screenshot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer {
    flex-direction: column;
    gap: 4px;
  }
}

@media (max-width: 480px) {
  .site-header,
  .page-shell,
  .site-footer {
    width: min(100% - 28px, var(--content-width));
  }

  .brand__logo {
    width: 168px;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.88rem;
  }

  .screenshot-grid {
    grid-template-columns: 1fr;
  }
}