:root {
  --ink: #0E3A46;
  --mint: #2FBF8A;
  --air: #E6EEF2;
  --display: Gloock, Georgia, serif;
  --body: "Spline Sans", sans-serif;
  --measure: 40rem;
  --wrap: 68rem;
}

* {
  box-sizing: border-box;
}

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

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

a {
  color: inherit;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: 0.75rem;
  background: var(--mint);
  color: var(--ink);
  padding: 0.4rem 0.7rem;
  transform: translateY(-150%);
}

.skip:focus {
  transform: none;
  z-index: 5;
}

.wrap {
  width: min(var(--wrap), calc(100% - 2.5rem));
  margin-inline: auto;
}

.mast {
  background: var(--air);
}

.mast-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ink);
}

.brand img {
  width: 3rem;
  height: 3rem;
}

.brand-mark {
  display: block;
  font-family: var(--display);
  font-size: 1.45rem;
  line-height: 1;
}

.brand-domain {
  display: block;
  font-size: 0.78rem;
  margin-top: 0.2rem;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 0.2rem;
}

.nav-link[aria-current="page"] {
  border-bottom-width: 3px;
  border-bottom-color: var(--mint);
}

.sight-button {
  display: inline-block;
  background: var(--mint);
  color: var(--ink);
  text-decoration: none;
  border-radius: 14px;
  padding: 0.65rem 1rem;
  font-weight: 600;
  line-height: 1.2;
}

.sight-button:focus-visible,
.nav-link:focus-visible,
.sight-text:focus-visible,
.reading a:focus-visible,
.foot-links a:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.sight-band-hero {
  background: var(--ink);
  color: var(--air);
  --eyepiece-hole: var(--ink);
}

.sight-band-row {
  display: grid;
  grid-template-columns: 16rem 1fr;
  gap: 2rem;
  align-items: center;
  position: relative;
  min-height: 22rem;
  padding: 3rem 0;
}

.sight-band-rule {
  height: 2px;
  background: var(--ink);
  border: 0;
  margin: 0;
}

.hairline {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--mint);
  pointer-events: none;
}

.page-head .hairline {
  background: var(--ink);
}

.eyepiece {
  position: relative;
  z-index: 1;
  width: 15rem;
  height: 15rem;
}

.eyepiece-compact {
  width: 4.5rem;
  height: 4.5rem;
}

.eyepiece-spin {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 12deg, var(--mint) 0deg 46deg, transparent 46deg 74deg, var(--air) 74deg 82deg, var(--mint) 82deg 360deg);
  animation: ring-turn 1.15s ease forwards;
}

.eyepiece-hole {
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  background: var(--eyepiece-hole, var(--air));
}

.eyepiece-name {
  position: relative;
  z-index: 1;
  margin: 0;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1.8rem;
  font-family: var(--display);
  font-size: 0.78rem;
  line-height: 1.25;
  color: var(--air);
}

.eyepiece-compact .eyepiece-name {
  color: var(--ink);
  font-size: 0.58rem;
  padding: 0.55rem;
}

.sight-copy {
  position: relative;
  z-index: 1;
}

.sight-copy h1,
.page-head h1,
.reading h2 {
  font-family: var(--display);
  font-weight: 400;
  line-height: 1.2;
}

.sight-copy h1 {
  margin: 0 0 0.8rem;
  font-size: 2.5rem;
  background: var(--ink);
  display: inline-block;
}

.sight-copy p {
  margin: 0 0 1rem;
  max-width: 40rem;
}

.sight-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.sight-text {
  color: var(--air);
  text-underline-offset: 0.15em;
}

.sight-band-hero .sight-button:focus-visible,
.sight-band-hero .sight-text:focus-visible {
  outline-color: var(--air);
}

.page-head {
  padding-top: 1.5rem;
}

.page-head-row {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1.25rem;
  align-items: center;
  position: relative;
  min-height: 5.5rem;
}

.page-head h1 {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 2.3rem;
  background: var(--air);
  display: inline-block;
  padding: 0.15rem 0.45rem 0.15rem 0;
}

.reading {
  max-width: var(--measure);
  padding: 0.5rem 0 4rem;
}

.reading h2 {
  font-size: 1.85rem;
  margin: 2.2rem 0 0.7rem;
}

.reading h3 {
  font-family: var(--body);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 1.25rem 0 0.25rem;
}

.reading h3::before {
  content: "";
  display: inline-block;
  width: 0.7rem;
  height: 1px;
  background: var(--mint);
  margin-right: 0.45rem;
  vertical-align: middle;
}

.reading h3 + p,
.reading h3 + ul,
.reading h3 + ol {
  margin-top: 0;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 0.75rem;
}

.reading p,
.reading ul,
.reading ol {
  margin: 0 0 0.9rem;
}

.reading ul,
.reading ol {
  list-style: none;
  padding: 0;
}

.reading ul li,
.reading ol li {
  position: relative;
  border-bottom: 1px solid var(--ink);
  padding: 0.7rem 0 0.7rem 1.1rem;
}

.reading ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.15rem;
  width: 0.65rem;
  height: 1px;
  background: var(--mint);
}

.reading ol {
  counter-reset: sight;
}

.reading ol li {
  counter-increment: sight;
  padding-left: 1.8rem;
}

.reading ol li::before {
  content: counter(sight);
  position: absolute;
  left: 0;
  top: 0.65rem;
  font-family: var(--display);
}

.reading a {
  text-underline-offset: 0.15em;
}

.site-foot {
  padding-bottom: 2rem;
}

.foot-row {
  border-top: 1px solid var(--ink);
  margin: 0;
  padding: 0.8rem 0;
}

.foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.85rem;
  border-top: 1px solid var(--ink);
  margin: 0;
  padding: 0.9rem 0 0;
  list-style: none;
}

.foot-links a {
  text-underline-offset: 0.15em;
}

@keyframes ring-turn {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(28deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .eyepiece-spin {
    animation: none;
  }
}

@media (max-width: 800px) {
  .mast-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .sight-band-row {
    grid-template-columns: 1fr;
    justify-items: start;
    min-height: 0;
    padding: 2.2rem 0;
  }

  .sight-band-hero .eyepiece {
    width: 11rem;
    height: 11rem;
  }

  .sight-copy h1,
  .page-head h1 {
    font-size: 2rem;
  }
}