/* Biotide: painted steel, open gates and deliberately different levels. */
:root {
  --bt-ground: #F7F2E8;
  --bt-ink: #2D2922;
  --bt-turquoise: #269EA6;
  --bt-mineral: #CFDDC5;
  --bt-surface: #FDFCFB;
  --bt-reading: 1192px;
  --bt-display: 'Truculenta', 'Arial Narrow', sans-serif;
  --bt-text: 'Unna', Georgia, serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body { margin: 0; background: var(--bt-ground); color: var(--bt-ink); font: 21px/1.5 var(--bt-text); }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: .2em; text-decoration-thickness: 1px; transition: text-decoration-thickness .15s ease, background-color .15s ease; }
a:hover { text-decoration-thickness: 3px; }
a:focus-visible { outline: 3px solid var(--bt-ink); outline-offset: 5px; background: var(--bt-mineral); }
a { -webkit-tap-highlight-color: #CFDDC5; }
::selection { background: var(--bt-mineral); color: var(--bt-ink); }
.bt-skip { position: absolute; z-index: 5; left: 20px; top: -100px; padding: 8px 14px; background: var(--bt-surface); }
.bt-skip:focus { top: 12px; }
.bt-sluice { width: min(var(--bt-reading), calc(100% - 80px)); margin-inline: auto; height: 132px; position: relative; }
.bt-wordmark { position: absolute; top: 12px; left: 304px; text-decoration: none; font: 600 46px/1 var(--bt-display); white-space: nowrap; }
.bt-wordmark::after { content: ''; display: block; width: 52px; height: 5px; background: var(--bt-ink); margin-top: 10px; transition: width .2s ease; }
.bt-wordmark:hover::after, .bt-wordmark:focus-visible::after { width: 100%; }
.bt-gate { position: absolute; top: 50px; width: 248px; height: 78px; border: 12px solid var(--bt-turquoise); }
.bt-gate::before, .bt-gate::after { content: ''; position: absolute; top: 0; bottom: 0; width: 12px; background: var(--bt-turquoise); }
.bt-gate::before { left: 25px; }
.bt-gate::after { left: 68px; }
.bt-gate-left { left: 0; width: 248px; border-right-width: 20px; }
.bt-gate-right { right: 0; width: 190px; border-left-width: 20px; }
.bt-gate-right::before { left: auto; right: 25px; }
.bt-gate-right::after { left: auto; right: 68px; }
.bt-gate-nav { position: absolute; top: 45px; left: 123px; display: flex; flex-direction: column; gap: 2px; padding: 0 8px; background: var(--bt-ground); }
.bt-gate-nav a { display: flex; gap: 8px; align-items: center; min-height: 27px; font: 600 18px/1.2 var(--bt-display); text-decoration: none; }
.bt-gate-nav a:hover, .bt-gate-nav a:focus-visible { text-decoration: underline; text-decoration-thickness: 2px; background: var(--bt-mineral); }
[data-lucide] { display: inline-block; width: 20px; height: 20px; flex: 0 0 20px; vertical-align: middle; }
[data-lucide] svg { width: 100%; height: 100%; }
.bt-inner-opening, .bt-duet, .bt-foot-inside { width: min(var(--bt-reading), calc(100% - 80px)); margin-inline: auto; }
h1, h2, h3, p { margin-top: 0; }
h1 { font: 600 clamp(54px, 5.3vw, 76px)/.97 var(--bt-display); letter-spacing: -.015em; margin-bottom: 0; }
.bt-primary-name { white-space: nowrap; }
/* Two full-bleed gate leaves retain their 80px difference below the open slab. */
.bt-home-opening { position: relative; isolation: isolate; min-height: 662px; padding-block: 44px 82px; }
.bt-hero-composition { width: min(var(--bt-reading), calc(100% - 80px)); margin-inline: auto; position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); }
.bt-title-ground { background: var(--bt-mineral); padding: 34px 42px 30px; clip-path: polygon(0 0, calc(100% - 48px) 0, calc(100% - 48px) 28px, 100% 28px, 100% 100%, 0 100%); }
.bt-title-ground::before { content: ''; display: block; width: 72px; height: 8px; background: var(--bt-ink); margin-bottom: 25px; }
.bt-title-ground h1 { max-width: 650px; }
.bt-opening-lead { align-self: end; font-size: 24px; line-height: 1.33; margin: 0; padding: 28px 34px 30px; background: var(--bt-ground); box-shadow: 18px -18px 0 var(--bt-ink); }
.bt-promise-current { grid-column: 1 / -1; padding: 23px 42px 27px; position: relative; color: var(--bt-ink); background: var(--bt-ground); cursor: default; }
.bt-promise-current::before { content: ''; display: block; width: 95px; height: 24px; background: url('./level-interval.svg') left center / 95px 24px no-repeat; margin: 0 0 10px 3em; }
.bt-promise-words { margin: 0; font-size: 18px; line-height: 1.34; text-indent: 3em; }
.bt-promise-words strong { font-weight: 700; }
.bt-promise-last { display: block; margin-top: 5px; text-indent: 0; }
.bt-lock-window-pair { position: absolute; z-index: 0; inset: 0; display: grid; grid-template-columns: 1.05fr 1fr; gap: 18px; align-items: start; }
.bt-lock-window { position: relative; background: var(--bt-mineral); }
.bt-lock-window img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.bt-window-near { height: calc(100% - 80px); }
.bt-window-near img { object-position: 45% 50%; }
.bt-window-deep { height: 100%; }
.bt-window-deep img { object-position: 61% 50%; }
.bt-level-ledge { position: absolute; width: 104px; height: 16px; bottom: -16px; right: max(40px, calc((100% - var(--bt-reading)) / 2)); background: var(--bt-ink); }
/* Each account has a fixed lower starting level; each aside belongs to its row. */
.bt-duet { padding-top: 58px; }
.bt-reading-row { display: grid; grid-template-columns: minmax(0, .67fr) minmax(0, 1.33fr); column-gap: 124px; padding-block: 54px 66px; }
.bt-interpretation { position: sticky; top: 30px; align-self: start; max-width: 320px; }
.bt-level-number { display: block; width: max-content; position: relative; font: 600 100px/.8 var(--bt-display); letter-spacing: -.055em; margin: 0 0 22px -24px; padding: 8px 24px 7px; border-left: 12px solid var(--bt-turquoise); box-shadow: 12px 12px 0 var(--bt-mineral); }
.bt-interpretation h2 { font: 600 43px/1.02 var(--bt-display); margin-bottom: 18px; }
.bt-interpretation p { font-size: 22px; line-height: 1.35; margin-bottom: 0; }
.bt-account { padding-top: 178px; max-width: 680px; }
.bt-account p { margin-bottom: 25px; }
.bt-account p:last-child { margin-bottom: 0; }
.bt-account a { text-decoration-color: var(--bt-ink); box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.bt-account a:hover { background: var(--bt-mineral); }
.bt-cross-current { margin: 0 30px 0 -30px; padding: 34px 54px 35px; background: var(--bt-mineral); font: italic 30px/1.25 var(--bt-text); position: relative; box-shadow: 30px 18px 0 var(--bt-surface); }
.bt-cross-current::before { content: ''; position: absolute; width: 70px; height: 13px; left: -16px; top: 22px; background: var(--bt-ink); }
.bt-cross-current::after { content: ''; position: absolute; width: 44px; height: 13px; right: -30px; bottom: 18px; background: var(--bt-ink); }
.bt-cross-current:nth-of-type(even) { margin-inline: 30px -30px; box-shadow: -30px 18px 0 var(--bt-surface); }
.bt-inner-opening { width: 100%; display: grid; grid-template-columns: minmax(40px, 1fr) minmax(0, var(--bt-reading)) minmax(40px, 1fr); padding-block: 34px 0; }
.bt-inner-opening > * { grid-column: 2; }
.bt-breadcrumb { font: 500 18px/1.3 var(--bt-display); margin-bottom: 30px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.bt-breadcrumb a { display: inline-flex; align-items: center; gap: 9px; }
.bt-breadcrumb > span[aria-hidden] { border-left: 2px solid var(--bt-ink); height: 18px; }
.bt-inner-opening h1 { max-width: 1000px; font-size: clamp(48px, 5vw, 72px); border-left: 14px solid var(--bt-turquoise); padding-left: 26px; margin-left: -40px; }
.bt-inner-lead { font-size: 25px; line-height: 1.32; max-width: 660px; margin: 28px 0 40px auto; }
.bt-inner-opening > .bt-page-photo { grid-column: 1 / -1; }
.bt-page-photo { height: 236px; margin: 0; position: relative; background: var(--bt-mineral); box-shadow: 0 16px 0 var(--bt-mineral); }
.bt-page-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 56%; }
.bt-page-photo::after { content: ''; position: absolute; right: max(40px, calc((100% - var(--bt-reading)) / 2)); bottom: -26px; width: 110px; height: 26px; background: var(--bt-turquoise); }
.bt-page-note { font-size: 17px; max-width: 610px; margin: 29px 0 0; }
.bt-inner-reading { padding-top: 20px; }
.bt-foot { margin-top: 72px; border-top: 20px solid var(--bt-turquoise); padding-block: 45px 30px; background: var(--bt-surface); position: relative; }
.bt-foot::before { content: ''; display: block; position: absolute; top: -40px; left: max(40px, calc((100% - var(--bt-reading)) / 2)); width: 104px; height: 20px; background: var(--bt-ink); }
.bt-foot-inside { display: grid; grid-template-columns: 1.3fr 1fr; gap: 30px 80px; }
.bt-foot-note { font-size: 25px; max-width: 570px; margin: 0; }
.bt-foot-links { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; font: 600 21px/1.3 var(--bt-display); }
.bt-foot-copyright { font-size: 16px; margin: 0; }
.bt-missing { padding-bottom: 80px; }
.bt-missing p { max-width: 600px; margin-block: 26px; }
@media (max-width: 1100px) and (min-width: 701px) {
  .bt-wordmark { left: 267px; font-size: 38px; }
  .bt-gate-right { width: 95px; }
  .bt-gate-right::after { display: none; }
  .bt-hero-composition { grid-template-columns: minmax(0, 1fr); width: calc(100% - 120px); }
  .bt-title-ground { max-width: 760px; }
  .bt-title-ground h1 { font-size: 62px; }
  .bt-opening-lead { max-width: 650px; justify-self: end; box-shadow: none; padding-block: 20px; }
  .bt-reading-row { column-gap: 65px; }
  .bt-level-number { margin-left: 0; }
  .bt-cross-current, .bt-cross-current:nth-of-type(even) { margin-inline: 0; }
  .bt-inner-opening h1 { margin-left: 0; }
}
@media (max-width: 700px) {
  body { font-size: 19px; line-height: 1.45; }
  .bt-sluice { height: 78px; width: calc(100% - 32px); }
  .bt-wordmark { font-size: 31px; top: 8px; left: 24px; }
  .bt-wordmark::after { display: none; }
  .bt-gate { top: 45px; height: 28px; width: 10px; border: 0; background: var(--bt-turquoise); }
  .bt-gate-left { left: 0; }
  .bt-gate-right { right: 0; }
  .bt-gate::before, .bt-gate::after { display: none; }
  .bt-gate-nav { top: 43px; left: 23px; right: 23px; flex-direction: row; justify-content: space-between; padding: 0; gap: 5px; }
  .bt-gate-nav a { min-height: 32px; font-size: 18px; gap: 5px; }
  .bt-gate-nav [data-lucide] { width: 15px; height: 15px; flex-basis: 15px; }
  .bt-inner-opening, .bt-duet, .bt-foot-inside { width: calc(100% - 40px); }
  .bt-home-opening { padding: 12px 0 0; min-height: 0; }
  .bt-hero-composition { width: 100%; display: block; }
  .bt-title-ground { padding: 21px 20px 20px; clip-path: polygon(0 0, calc(100% - 28px) 0, calc(100% - 28px) 12px, 100% 12px, 100% 100%, 0 100%); }
  .bt-title-ground::before { width: 45px; height: 6px; margin-bottom: 13px; }
  h1 { font-size: 36px; line-height: 1.02; letter-spacing: -.01em; }
  .bt-opening-lead { font-size: 18px; line-height: 1.28; padding: 17px 20px 0; box-shadow: none; }
  .bt-promise-current { padding: 16px 20px 21px; }
  .bt-promise-current::before { margin: 0 0 7px 3em; height: 18px; width: 70px; background-size: 70px 18px; }
  .bt-promise-words { font-size: 16px; line-height: 1.29; text-indent: 3em; }
  .bt-promise-last { margin-top: 5px; }
  .bt-lock-window-pair { position: relative; inset: auto; height: 94px; gap: 12px; width: calc(100% - 32px); margin-inline: auto; }
  .bt-window-near, .bt-window-deep { height: 94px; }
  .bt-level-ledge { display: none; }
  .bt-duet { padding-top: 22px; }
  .bt-reading-row { grid-template-columns: minmax(0, 1fr); gap: 24px; padding-block: 38px 44px; }
  .bt-interpretation { position: static; max-width: none; }
  .bt-level-number { font-size: 64px; margin: 0 0 20px; padding: 4px 15px 5px; border-left-width: 8px; box-shadow: 8px 8px 0 var(--bt-mineral); }
  .bt-interpretation h2 { font-size: 34px; margin-bottom: 14px; }
  .bt-interpretation p { font-size: 21px; line-height: 1.32; }
  .bt-account { padding-top: 0; max-width: none; }
  .bt-account p { margin-bottom: 22px; }
  .bt-cross-current, .bt-cross-current:nth-of-type(even) { margin: 0; padding: 29px 21px 28px; font-size: 24px; box-shadow: 0 10px 0 var(--bt-surface); }
  .bt-cross-current::before { left: 0; top: 0; width: 46px; height: 8px; }
  .bt-cross-current::after { right: 0; bottom: 0; width: 28px; height: 8px; }
  .bt-inner-opening { padding-top: 24px; width: 100%; grid-template-columns: 20px minmax(0, 1fr) 20px; }
  .bt-inner-opening > .bt-page-photo { grid-column: 2; }
  .bt-breadcrumb { margin-bottom: 24px; font-size: 17px; }
  .bt-breadcrumb > span:last-child { max-width: 100%; }
  .bt-inner-opening h1 { font-size: 38px; padding-left: 14px; border-left-width: 8px; margin-left: 0; }
  .bt-inner-lead { margin: 23px 0 28px; font-size: 21px; }
  .bt-page-photo { height: 152px; margin-inline: -4px; box-shadow: 0 9px 0 var(--bt-mineral); }
  .bt-page-photo::after { width: 62px; right: 18px; height: 10px; bottom: -19px; }
  .bt-page-note { font-size: 16px; line-height: 1.3; margin-top: 27px; }
  .bt-inner-reading { padding-top: 10px; }
  .bt-foot { margin-top: 44px; padding-block: 30px 25px; border-top-width: 12px; }
  .bt-foot::before { top: -24px; left: 20px; height: 12px; width: 64px; }
  .bt-foot-inside { grid-template-columns: 1fr; gap: 28px; }
  .bt-foot-note { font-size: 22px; }
  .bt-foot-links { font-size: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}