:root {
  color-scheme: light;
  --ink: #17232b;
  --muted: #5d6870;
  --soft: #f3f8fb;
  --panel: #ffffff;
  --line: #d8e6ee;
  --blue: #5aa8d6;
  --blue-dark: #275f7a;
  --coral: #bd5846;
  --amber: #d39124;
  --shadow: 0 18px 50px rgba(23, 35, 43, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
}

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

.skip-link {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 10px 12px;
  color: var(--panel);
  background: var(--blue-dark);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  z-index: 10;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0;
  color: #ffffff;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 8px;
  background: rgba(90, 168, 214, 0.2);
  object-fit: contain;
  padding: 3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.94rem;
  font-weight: 700;
}

.nav-links a,
.text-link {
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.28em;
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 74vh;
  padding: 112px 0 50px;
  overflow: hidden;
  color: #ffffff;
  background: #163243;
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image: url("assets/site/github-pages-hero.png");
  background-position: center;
  background-size: cover;
  opacity: 0.72;
}

.hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background: rgba(12, 33, 47, 0.24);
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero-logo {
  position: absolute;
  top: 0;
  right: 0;
  width: clamp(76px, 10vw, 112px);
  height: clamp(76px, 10vw, 112px);
  margin: 0;
  object-fit: contain;
  filter: drop-shadow(0 16px 26px rgba(0, 0, 0, 0.3));
  pointer-events: none;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 840px;
  margin: 0;
  font-size: clamp(3.1rem, 8vw, 6.9rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.lede {
  max-width: 740px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1.12rem, 2vw, 1.48rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  color: #142837;
  background: #b7dff3;
}

.button.secondary {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.58);
  background: rgba(255, 255, 255, 0.12);
}

.authority-note {
  max-width: 720px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.95rem;
}

.section-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.intro,
.feature-band,
.gallery,
.support-band,
.links-band {
  padding: 72px 0;
}

.intro {
  background: #ffffff;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 44px;
  align-items: start;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 1.14rem;
}

p {
  font-size: 1rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.feature-card,
.link-list a,
.support-action {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.feature-card {
  padding: 24px;
}

.feature-card:nth-child(1) {
  border-top: 4px solid var(--blue);
}

.feature-card:nth-child(2) {
  border-top: 4px solid var(--coral);
}

.feature-card:nth-child(3) {
  border-top: 4px solid var(--amber);
}

.feature-card p {
  margin: 12px 0 0;
  color: var(--muted);
}

.gallery {
  background: #ffffff;
}

.gallery-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}

.text-link {
  color: var(--blue-dark);
  font-weight: 800;
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

figure {
  margin: 0;
}

.screenshot-grid figure {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.screenshot-grid img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: top center;
  background: #edf2ee;
}

.screenshot-grid figcaption {
  padding: 14px 16px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.links-band {
  background: var(--soft);
}

.support-band {
  background: #ffffff;
}

.link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.support-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 34px;
  align-items: start;
}

.support-copy p:last-child {
  margin: 18px 0 0;
  color: var(--muted);
}

.support-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.link-list a,
.support-action {
  display: grid;
  gap: 6px;
  padding: 18px;
  text-decoration: none;
}

.link-list a:hover,
.link-list a:focus-visible,
.support-action:hover,
.support-action:focus-visible,
.button:hover,
.button:focus-visible {
  outline: 3px solid rgba(211, 145, 36, 0.32);
  outline-offset: 2px;
}

.link-list span,
.support-action span {
  font-weight: 850;
}

.link-list small,
.support-action small {
  color: var(--muted);
  font-size: 0.86rem;
}

.site-footer {
  padding: 32px 0;
  color: rgba(255, 255, 255, 0.84);
  background: var(--blue-dark);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  font-weight: 800;
  text-underline-offset: 0.28em;
}

@media (max-width: 840px) {
  .site-nav,
  .gallery-heading,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero {
    min-height: 70vh;
    padding-top: 122px;
    padding-bottom: 54px;
  }

  .two-column,
  .feature-grid,
  .screenshot-grid,
  .link-list,
  .support-layout,
  .support-actions {
    grid-template-columns: 1fr;
  }

  .screenshot-grid img {
    aspect-ratio: 16 / 11;
  }

  .hero-logo {
    display: none;
  }
}

@media (max-width: 520px) {
  .site-nav {
    width: min(100% - 24px, 1120px);
  }

  .hero-copy,
  .section-inner {
    width: min(100% - 24px, 1120px);
  }

  .hero h1 {
    font-size: clamp(2.55rem, 17vw, 4rem);
  }

  .lede {
    font-size: 1.04rem;
  }

  .authority-note {
    margin-top: 20px;
  }

  .button {
    width: 100%;
  }
}