@font-face {
  font-family: "Ibarra Real Nova";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/ibarra-real-nova-latin-400.woff2") format("woff2");
}

@font-face {
  font-family: "Ibarra Real Nova";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/ibarra-real-nova-latin-600.woff2") format("woff2");
}

@font-face {
  font-family: "Public Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/public-sans-latin-400.woff2") format("woff2");
}

@font-face {
  font-family: "Public Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/public-sans-latin-600.woff2") format("woff2");
}

:root {
  --ink: #1c2b3a;
  --brass: #b8923a;
  --mist: #d8dce8;
  --paper: #eef1f4;
  --line: #1c2b3a26;
  --rad: 7px;
  --tile: 3px;
}

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

html {
  scroll-behavior: smooth;
}

body.bi-body {
  margin: 0;
  color: var(--ink);
  background-color: var(--mist);
  background-image: repeating-linear-gradient(
    18deg,
    transparent,
    transparent 11px,
    #1c2b3a0a 11px,
    #1c2b3a0a 12px
  );
  font-family: "Public Sans", "Segoe UI", sans-serif;
  font-size: 1.02rem;
  line-height: 1.6;
}

h1,
h2,
h3,
.bi-word span,
.bi-roman {
  font-family: "Ibarra Real Nova", "Times New Roman", serif;
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 0.6rem;
}

h2 {
  font-size: 1.35rem;
  margin: 0 0 0.5rem;
}

p {
  margin: 0 0 0.85rem;
}

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

.bi-skip {
  position: absolute;
  left: -999px;
  top: 0;
}

.bi-skip:focus {
  left: 12px;
  top: 12px;
  background: var(--paper);
  padding: 0.4rem 0.7rem;
  z-index: 4;
}

.bi-lintel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.4rem;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
}

.bi-word {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  font-size: 1.15rem;
}

.bi-word img {
  display: block;
}

.bi-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.3rem;
}

.bi-rail a {
  text-decoration: none;
  position: relative;
  padding-bottom: 0.15rem;
}

.bi-rail a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  width: 7px;
  height: 7px;
  margin-left: -3.5px;
  border-radius: 50%;
  background: var(--brass);
}

.bi-mill {
  width: min(1080px, calc(100% - 2rem));
  margin: 1.4rem auto 3rem;
}

.bi-mill-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 52px;
  gap: 1rem;
}

.bi-mullion {
  color: var(--ink);
  position: sticky;
  top: 12px;
  height: min(70vh, 420px);
}

.bi-mullion-draw {
  width: 52px;
  height: auto;
}

.bi-roman {
  display: block;
  text-align: center;
  letter-spacing: 0.08em;
  margin-top: 0.4rem;
}

.bi-stroke {
  stroke: currentColor;
  stroke-dasharray: 420;
  stroke-dashoffset: 420;
}

.bi-body.is-drawn .bi-stroke {
  animation: bi-draw 1.1s ease forwards;
}

.bi-eye {
  fill: var(--brass);
  transform-origin: center;
  opacity: 0;
}

.bi-body.is-drawn .bi-eye {
  animation: bi-settle 0.7s ease 0.4s forwards;
}

@keyframes bi-draw {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes bi-settle {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.bi-section {
  margin-bottom: 1rem;
}

.bi-how,
.bi-why,
.bi-window,
.bi-triptych,
.bi-wicketplate,
.bi-stencils,
.bi-leaf,
.bi-copy {
  background: var(--paper);
  border: 1px solid var(--ink);
  border-radius: var(--tile);
  padding: 1.2rem 1.3rem 1.3rem;
  margin-bottom: 1rem;
}

.bi-kicker,
.bi-line {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--brass);
  margin-bottom: 0.4rem;
}

.bi-chip {
  display: inline-block;
  border: 1px solid var(--ink);
  padding: 0.15rem 0.5rem;
  font-size: 0.85rem;
  margin-bottom: 0.7rem;
}

.bi-window-draw {
  width: min(100%, 420px);
  height: auto;
  color: var(--ink);
  display: block;
  margin: 0.4rem 0 0.7rem;
}

.bi-window-note,
.bi-lead,
.bi-aux {
  max-width: 40rem;
}

.bi-row,
.bi-stack {
  display: grid;
  gap: 0.8rem;
}

.bi-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bi-tile {
  display: block;
  text-decoration: none;
  border: 1px solid var(--ink);
  border-radius: var(--tile);
  padding: 0.85rem 0.9rem 0.95rem 1.05rem;
  background-color: var(--mist);
  background-image: linear-gradient(
    90deg,
    #1c2b3a 0 8px,
    #b8923a 8px 10px,
    transparent 10px
  );
}

.bi-tile strong {
  display: block;
  margin: 0.15rem 0 0.25rem;
  font-family: "Ibarra Real Nova", serif;
}

.bi-ico {
  width: 36px;
  height: 36px;
  color: var(--ink);
}

.bi-knock,
.bi-slip button {
  display: inline-block;
  background: var(--brass);
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--ink);
  border-radius: var(--rad);
  padding: 0.55rem 1rem;
  font: inherit;
  cursor: pointer;
  margin-right: 0.8rem;
}

.bi-ink {
  color: var(--ink);
  text-underline-offset: 0.18em;
}

.bi-list,
.bi-ol,
.bi-map {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}

.bi-dl {
  margin: 0 0 1rem;
}

.bi-dl div {
  display: grid;
  grid-template-columns: 10rem minmax(0, 1fr);
  gap: 0.4rem 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line);
}

.bi-dl dt {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.bi-dl dd {
  margin: 0;
}

.bi-hold {
  border-top: 1px solid var(--line);
  padding: 0.8rem 0;
}

.bi-addr {
  font-family: "Ibarra Real Nova", serif;
}

.bi-reach {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  margin: 0 0 1rem;
}

.bi-foot-brand a {
  color: var(--mist);
}

.bi-slip label {
  display: block;
  margin-bottom: 0.8rem;
}

.bi-slip span {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.bi-slip input,
.bi-slip textarea {
  width: 100%;
  max-width: 28rem;
  border: 1px solid var(--ink);
  border-radius: var(--tile);
  background: var(--mist);
  color: var(--ink);
  padding: 0.45rem 0.55rem;
  font: inherit;
}

.bi-keep {
  margin-top: 0.7rem;
}

.bi-foot {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.2rem;
  padding: 1.4rem 1.5rem 2rem;
  border-top: 1px solid var(--brass);
  background: var(--ink);
  color: var(--mist);
}

.bi-foot a {
  color: var(--mist);
}

.bi-foot-links {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.bi-foot-mark {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.bi-foot img {
  filter: invert(1) sepia(0.2);
}

@media (max-width: 860px) {
  .bi-row,
  .bi-foot,
  .bi-dl div,
  .bi-mill-inner {
    grid-template-columns: 1fr;
  }

  .bi-mullion {
    display: none;
  }

  .bi-lintel {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .bi-mill {
    width: calc(100% - 1.2rem);
  }

  .bi-knock {
    display: block;
    width: max-content;
    margin-bottom: 0.6rem;
  }
}