:root {
  --walnut: #4e3422;
  --click: #c4342a;
  --slate: #d7dee6;
  --paper: #f4f7f8;
  --radius: 5px;
  --serif: "Besley", "Iowan Old Style", Palatino, Georgia, serif;
  --sans: "Albert Sans", "Avenir Next", "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--slate);
  color: var(--walnut);
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.6;
}

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

a {
  color: var(--walnut);
}

a:hover {
  color: var(--click);
}

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

.skip {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  background: var(--click);
  color: #fff;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius);
  z-index: 2;
}

.skip:focus {
  top: 0.75rem;
  color: #fff;
}

.staff-header {
  position: relative;
  padding: 1.1rem 1.25rem 0.4rem;
  max-width: 72rem;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-family: var(--serif);
  font-weight: 650;
  letter-spacing: 0.01em;
}

.brand img {
  width: 46px;
  height: 58px;
  display: block;
}

.measure-nav {
  position: relative;
  margin-top: 0.85rem;
  padding: 0.55rem 0 0.45rem;
}

.staff-lines {
  position: absolute;
  inset: 0.15rem 0 auto;
  height: 1.7rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
}

.staff-lines i {
  display: block;
  height: 1px;
  background: var(--walnut);
  transform-origin: left center;
  animation: staff-draw 700ms ease forwards;
}

.measure-nav ol {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  list-style: none;
  margin: 0.35rem 0 0;
  padding: 0;
}

.measure-nav a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  background: var(--slate);
  padding: 0.12rem 0.2rem;
  position: relative;
}

.measure-nav .num {
  font-family: var(--serif);
  font-size: 0.78rem;
}

.measure-nav a[aria-current="page"] {
  color: var(--click);
  text-decoration: underline;
  text-underline-offset: 0.2rem;
}

.bay {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0.5rem 1.25rem 2rem;
}

.staff-rule {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 1.55rem;
  margin: 0.4rem 0 1rem;
}

.staff-rule.bottom {
  margin: 1.2rem 0 0.2rem;
}

.staff-rule i {
  display: block;
  height: 1px;
  background: var(--walnut);
  transform-origin: left center;
  animation: staff-draw 800ms ease forwards;
}

@keyframes staff-draw {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.sheet {
  padding: 0.25rem 0 0.5rem;
}

.hero {
  display: grid;
  grid-template-columns: 9.5rem 1fr;
  gap: 1.5rem 2rem;
  align-items: start;
}

.metro {
  background: var(--paper);
  border: 2px solid var(--walnut);
  border-radius: var(--radius);
  min-height: 13rem;
  padding: 0.85rem 0.7rem 0.8rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.metro .eq {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.35;
}

.metro svg {
  width: 100%;
  height: 6.4rem;
}

.hero h1,
.chart-body h1,
.sheet h1 {
  font-family: var(--serif);
  font-weight: 650;
  font-size: clamp(2rem, 4vw, 3.15rem);
  line-height: 1.12;
  margin: 0 0 0.75rem;
}

.support,
.lead {
  margin: 0 0 1rem;
  max-width: 42rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.2rem;
}

.cta {
  display: inline-block;
  background: var(--click);
  color: #fff;
  text-decoration: none;
  border: 2px solid var(--click);
  border-radius: var(--radius);
  padding: 0.65rem 1.05rem;
  font-weight: 600;
}

.cta:hover,
.cta:focus-visible {
  color: #fff;
  background: #9e291f;
  border-color: #9e291f;
}

.text-link {
  font-weight: 600;
}

.block {
  margin-top: 2.2rem;
}

.block h2,
.chart-body h2 {
  font-family: var(--serif);
  font-size: 1.65rem;
  font-weight: 650;
  margin: 0 0 0.55rem;
}

.kit-layout {
  display: grid;
  grid-template-columns: 16rem 1fr;
  gap: 1rem;
  align-items: center;
}

.bay-map {
  background: var(--paper);
  border: 1px solid var(--walnut);
  border-radius: var(--radius);
  padding: 0.5rem;
}

.measure-grid {
  display: grid;
  gap: 0.8rem;
}

.measure-grid.two {
  grid-template-columns: 1fr 1fr;
}

.measure-grid.three {
  grid-template-columns: repeat(3, 1fr);
}

.measure {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--walnut);
  border-radius: var(--radius);
  padding: 1.15rem 0.9rem 0.85rem;
  box-shadow: none;
}

.measure .num {
  position: absolute;
  top: 0.35rem;
  right: 0.5rem;
  font-family: var(--serif);
  font-size: 0.78rem;
}

.measure h3 {
  font-family: var(--serif);
  font-size: 1.15rem;
  margin: 0 0 0.3rem;
}

.measure p {
  margin: 0;
}

.measure a.title {
  color: inherit;
  text-decoration: none;
}

.measure a.title:hover {
  color: var(--click);
}

.chart-sheet {
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 0.8rem 1rem;
  align-items: start;
}

.measures-rail {
  list-style: none;
  margin: 0.4rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  font-family: var(--serif);
}

.chart-body ul,
.chart-body ol,
.sheet ul,
.sheet ol {
  margin: 0.3rem 0 0;
  padding-left: 1.15rem;
}

.chart-body li + li,
.sheet li + li {
  margin-top: 0.35rem;
}

.facts-list {
  margin: 0;
  padding: 0;
  list-style: none;
  max-width: 44rem;
}

.facts-list li {
  display: grid;
  grid-template-columns: 14rem 1fr;
  gap: 0.6rem;
  padding: 0.55rem 0;
  border-top: 1px solid var(--walnut);
}

.facts-list li:last-child {
  border-bottom: 1px solid var(--walnut);
}

.facts-list span {
  font-weight: 600;
}

.qa h2 {
  font-size: 1.25rem;
}

.form {
  display: grid;
  gap: 0.8rem;
  max-width: 36rem;
  margin-top: 1rem;
}

.form label {
  display: grid;
  gap: 0.25rem;
  font-weight: 600;
}

.form input,
.form select,
.form textarea {
  font: inherit;
  color: var(--walnut);
  background: var(--paper);
  border: 1px solid var(--walnut);
  border-radius: var(--radius);
  padding: 0.5rem 0.6rem;
}

.form button {
  justify-self: start;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.barline {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.25rem 2rem;
}

.double-bar {
  display: flex;
  justify-content: flex-end;
  align-items: stretch;
  gap: 0.28rem;
  height: 2.4rem;
  margin-bottom: 0.8rem;
}

.double-bar i {
  display: block;
  background: var(--walnut);
  width: 2px;
}

.double-bar i.thick {
  width: 6px;
}

.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.8rem;
  margin: 0 0 0.7rem;
  font-size: 0.95rem;
}

.facts strong {
  font-family: var(--serif);
}

.legal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
  margin-bottom: 0.6rem;
}

.legal-nav a {
  font-size: 0.92rem;
  font-weight: 600;
}

.copy {
  margin: 0;
  font-size: 0.88rem;
}

@media (max-width: 800px) {
  .hero,
  .kit-layout,
  .chart-sheet,
  .facts-list li {
    grid-template-columns: 1fr;
  }

  .measure-grid.two,
  .measure-grid.three {
    grid-template-columns: 1fr;
  }

  .measures-rail {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.45rem 0.7rem;
  }

  .metro {
    max-width: 11rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .staff-lines i,
  .staff-rule i { animation: none; }
}