:root {
  --slate: #293c44;
  --deep: #203139;
  --paper: #f3f6f7;
  --white: #ffffff;
  --amber: #efb544;
  --muted: #61747d;
  --quiet: #3d5560;
  --line: rgba(41, 60, 68, 0.14);
  --line-strong: rgba(41, 60, 68, 0.28);
  --shadow: 0 24px 50px rgba(32, 49, 57, 0.12);
  --sans: "Avenir Next", "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", "Cascadia Mono", ui-monospace, monospace;
  --measure: 72rem;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

section[id] {
  scroll-margin-top: 5.5rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--deep);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
}

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

h1,
h2,
h3 {
  letter-spacing: -0.03em;
  line-height: 1.05;
  font-weight: 700;
}

h1 {
  font-size: clamp(2.7rem, 7vw, 4.75rem);
  color: var(--deep);
}

h2 {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  max-width: 22rem;
}

.band h2,
.start-grid h2 {
  max-width: 38rem;
}

h3 {
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
}

code {
  font-family: var(--mono);
  font-size: 0.92em;
}

.wrap {
  width: min(var(--measure), calc(100% - var(--pad) * 2));
  margin-inline: auto;
}

.skip {
  position: absolute;
  left: 1rem;
  top: 0;
  transform: translateY(-120%);
  background: var(--amber);
  color: var(--deep);
  padding: 0.6rem 0.9rem;
  z-index: 10;
  font-weight: 700;
}

.skip:focus {
  transform: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(243, 246, 247, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.header-bar,
.footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  min-height: 4.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 1.05rem;
}

.brand img {
  width: 2.25rem;
  height: 2.25rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  justify-content: flex-end;
}

.site-nav a {
  text-decoration: none;
  color: var(--quiet);
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--deep);
}

.eyebrow {
  margin-bottom: 0.75rem;
  color: var(--quiet);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow.light {
  color: #d5dee2;
}

.hero {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(2rem, 5vw, 3.5rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(16rem, 0.85fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}

.lede {
  margin-top: 1.15rem;
  max-width: 38rem;
  font-size: 1.125rem;
  color: var(--slate);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.65rem 1.05rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.button.primary {
  background: var(--amber);
  color: var(--deep);
}

.button.secondary {
  background: transparent;
  color: var(--deep);
  box-shadow: inset 0 0 0 1.5px var(--line-strong);
}

.button:hover {
  filter: brightness(0.97);
}

.hero-art {
  margin: 0;
  border-radius: 1.5rem;
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow);
  min-height: 18rem;
}

.hero-art img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 22rem;
  object-fit: cover;
  object-position: 78% center;
}

.gap {
  background: var(--deep);
  color: var(--paper);
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.gap h2,
.limits h2 {
  color: var(--white);
  max-width: 16ch;
}

.gap-lead {
  margin-top: 1rem;
  max-width: 40rem;
  color: #d7e0e4;
  font-size: 1.125rem;
}

.gap-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 0.75rem;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}

.gap-list li {
  margin: 0;
  padding: 1rem 1rem 1rem 1.1rem;
  border-left: 3px solid var(--amber);
  background: rgba(255, 255, 255, 0.04);
}

.band {
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.band-quiet {
  background: var(--white);
  border-block: 1px solid var(--line);
}

.section-lead {
  margin-top: 0.9rem;
  max-width: 40rem;
  color: var(--quiet);
}

.pairs {
  margin-top: 2rem;
}

.pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 0.8rem 2.5rem;
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
}

.pair:last-child {
  border-bottom: 1px solid var(--line);
}

.snag h3 {
  margin-bottom: 0.4rem;
}

.snag p,
.does {
  color: var(--slate);
}

.does {
  margin: 0;
  padding-left: 1rem;
  border-left: 3px solid var(--amber);
  align-self: start;
}

.does-label {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--deep);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.75rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.25rem 1.3rem 1.35rem;
}

.card h3 {
  margin-bottom: 0.55rem;
}

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

.limits {
  background: var(--slate);
  color: var(--paper);
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.limits-grid {
  display: grid;
  grid-template-columns: minmax(12rem, 0.7fr) minmax(0, 1.3fr);
  gap: 1.5rem 3rem;
  align-items: start;
}

.limit-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.limit-list li {
  padding: 0.85rem 0;
  border-top: 1px solid rgba(243, 246, 247, 0.18);
}

.limit-list li:last-child {
  border-bottom: 1px solid rgba(243, 246, 247, 0.18);
}

.limit-list code {
  color: var(--white);
}

.start-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 2rem 3rem;
}

.start-grid p {
  margin-top: 0.9rem;
}

pre {
  margin: 0.9rem 0 0;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  background: var(--deep);
  color: var(--paper);
  border-radius: 0.75rem;
}

pre code {
  font-size: 0.95rem;
}

.text-link {
  font-weight: 700;
  color: var(--deep);
}

.preset-title {
  margin-bottom: 0.4rem;
}

.presets {
  margin: 0.6rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.presets li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.35rem 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}

.presets span {
  font-weight: 700;
}

.preset-note {
  color: var(--quiet);
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-bar {
  color: var(--quiet);
  font-size: 0.95rem;
}

.footer-bar a {
  color: var(--deep);
  font-weight: 700;
}

:focus-visible {
  outline: 2px solid var(--deep);
  outline-offset: 3px;
}

.gap :focus-visible,
.limits :focus-visible {
  outline-color: var(--amber);
}

@media (max-width: 860px) {
  section[id] {
    scroll-margin-top: 8rem;
  }

  .hero-grid,
  .pair,
  .limits-grid,
  .start-grid,
  .cards {
    grid-template-columns: 1fr;
  }

  .hero-art img {
    min-height: 14rem;
    object-position: right center;
  }

  h2 {
    max-width: none;
  }

  .header-bar,
  .footer-bar {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 0.85rem;
  }

  .site-nav {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button:hover {
    filter: none;
  }
}