@font-face {
  font-family: "Anton";
  src: url("assets/anton.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Roboto Condensed";
  src: url("assets/roboto-condensed-700.ttf") format("truetype");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

:root {
  --amber: #f8a928;
  --paper: #f7e9e8;
  --ink: #131313;
  --red: #d84737;
  --green: #4f994d;
  --neutral: #747379;
  --focus: #0069c2;
  --font-display: "Anton", "Arial Narrow", sans-serif;
  --font-body: "Aptos", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.45;
}

a { color: inherit; text-underline-offset: .2em; }
a:focus-visible, button:focus-visible { outline: 4px solid var(--focus); outline-offset: 4px; }
::selection { color: var(--paper); background: var(--ink); }

.skip-link {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute;
  z-index: 10;
  inset: 0 0 auto;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--ink);
}
.brand, .github-link {
  height: 100%;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-weight: 750;
}
.brand {
  width: 42.5%;
  gap: 14px;
  padding-left: clamp(24px, 3.5vw, 54px);
  background: var(--amber);
  font-size: 24px;
}
.brand img { display: block; object-fit: contain; }
.github-link { padding-right: clamp(24px, 3.5vw, 54px); font-size: 17px; }

.hero {
  height: clamp(600px, 46.875vw, 750px);
  display: grid;
  grid-template-columns: 42.5% 57.5%;
}
.hero-copy-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: clamp(92px, 7.3vw, 112px) clamp(28px, 3.5vw, 54px) 20px;
  background: var(--amber);
}
.hero h1 {
  margin: 0;
  max-width: 590px;
  font: 400 clamp(82px, 6.8vw, 104px)/.94 var(--font-display);
  letter-spacing: -.035em;
}
.hero-copy-panel > p:not(.route-line) {
  max-width: 560px;
  margin: 26px 0 0;
  font-size: clamp(20px, 1.55vw, 25px);
  line-height: 1.35;
}
.hero-actions { display: flex; align-items: center; gap: 34px; margin-top: 60px; }
.button {
  display: inline-flex;
  min-height: 58px;
  align-items: center;
  justify-content: center;
  padding: 0 34px;
  border: 2px solid var(--ink);
  text-decoration: none;
  font: 400 24px/1 var(--font-display);
}
.button-dark { min-width: 210px; color: var(--paper); background: var(--ink); }
.button-dark:hover { color: var(--ink); background: var(--paper); }
.text-link { font-weight: 750; text-decoration-thickness: 2px; }
.route-line {
  margin: auto 0 0;
  padding-top: 16px;
  font-size: 11px;
  font-weight: 800;
  line-height: 1.6;
  letter-spacing: .28em;
}
.route-line::before { content: ""; display: block; width: 36px; margin-bottom: 10px; border-top: 3px solid; }

.signal-board {
  position: relative;
  min-width: 0;
  overflow: hidden;
  padding: 88px clamp(28px, 3.5vw, 54px) 28px;
  background: var(--paper);
}
.pull-request-id {
  position: absolute;
  top: 92px;
  left: 7%;
  display: grid;
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.pull-request-id strong { margin-top: 3px; font-size: 18px; letter-spacing: .04em; }
.route-note {
  position: absolute;
  z-index: 2;
  top: 177px;
  left: 12.5%;
  margin: 0;
  font-size: 20px;
  line-height: 1.1;
}
.route-diagram {
  position: absolute;
  top: 105px;
  left: 7%;
  width: 58%;
  height: 360px;
  overflow: visible;
  color: var(--ink);
}
.lamp { transform-box: fill-box; transform-origin: center; }
.lamp-green { fill: var(--green); }
.lamp-neutral { fill: #aaa9ae; }
.lamp-red { fill: #ef5545; }
.rule-results {
  position: absolute;
  inset: 0;
  margin: 0;
}
.result {
  position: absolute;
  right: clamp(28px, 3.5vw, 54px);
  width: 255px;
  height: 66px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.result:nth-child(1) { top: 143px; }
.result:nth-child(2) { top: 276px; }
.result:nth-child(3) { top: 410px; }
.result dt { font: 700 28px/1.02 "Roboto Condensed", sans-serif; }
.result dd { margin: 8px 0 0; font-weight: 850; font-size: 16px; letter-spacing: .2em; text-transform: uppercase; }
.result-pass dd { color: #266f2d; }
.result-na dd { color: #5f5e64; }
.result-fail dd { color: #c72e20; }
.hold-status {
  position: absolute;
  right: clamp(28px, 3.5vw, 54px);
  bottom: 105px;
  left: 21%;
  min-height: 98px;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px 32px;
  color: var(--paper);
  background: var(--red);
}
.hold-status strong { padding-right: 24px; border-right: 2px solid currentColor; font: 400 40px/1 var(--font-display); text-transform: uppercase; }
.hold-status span:last-child { font-weight: 750; font-size: clamp(18px, 1.55vw, 25px); }
.hold-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  color: var(--red);
  background: var(--paper);
  font: 400 38px/1 var(--font-display);
}
.board-caption {
  position: absolute;
  right: clamp(28px, 3.5vw, 54px);
  bottom: 26px;
  left: 7%;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .28em;
}

.steps-preview {
  min-height: 304px;
  display: grid;
  grid-template-columns: 58% 42%;
  border-top: 1px solid #bcb7af;
  background: var(--paper);
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin: 0;
  padding: 62px clamp(28px, 3.5vw, 54px);
  list-style: none;
}
.steps li { position: relative; padding-top: 58px; border-top: 2px solid var(--ink); }
.steps li > span {
  position: absolute;
  top: -24px;
  left: 0;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--paper);
  background: var(--ink);
  font-weight: 850;
}
.steps h2 { margin: 0 0 10px; font: 700 20px/1.15 "Roboto Condensed", sans-serif; }
.steps p { max-width: 20ch; margin: 0; font-size: 16px; }
.code-wrap { padding: 36px clamp(28px, 3.5vw, 54px) 28px; border-left: 1px solid #bcb7af; }
.code-wrap > p { margin: 0 0 12px; font-size: 10px; letter-spacing: .16em; text-transform: uppercase; }
pre { min-height: 220px; margin: 0; padding: 24px; overflow: auto; color: #f5eee8; background: var(--ink); font: 14px/1.6 ui-monospace, "SFMono-Regular", Consolas, monospace; }
pre .line { color: var(--amber); }

.decisions {
  display: grid;
  grid-template-columns: 48% 52%;
  min-height: 720px;
  border-top: 1px solid var(--ink);
}
.section-heading { padding: 110px clamp(28px, 5vw, 76px); }
.section-heading h2,
.change-only h2,
.final-cta h2 {
  margin: 0;
  font: 400 clamp(58px, 6.2vw, 94px)/1 var(--font-display);
  letter-spacing: -.025em;
}
.section-heading p { max-width: 34ch; margin: 34px 0 0; font-size: 22px; }
.decision-list { margin: 0; border-left: 1px solid var(--ink); }
.decision-list > div {
  min-height: 180px;
  display: grid;
  grid-template-columns: 42% 58%;
  align-items: center;
  border-bottom: 1px solid var(--ink);
}
.decision-list > div:last-child { border-bottom: 0; }
.decision-list dt {
  height: 100%;
  display: flex;
  align-items: center;
  padding: 28px;
  border-right: 1px solid var(--ink);
  font: 700 28px/1.1 "Roboto Condensed", sans-serif;
  text-transform: uppercase;
}
.decision-list dd { max-width: 28ch; margin: 0; padding: 28px; font-size: 19px; }
.decision-list > div:nth-child(1) dt { color: #266f2d; }
.decision-list > div:nth-child(2) dt { color: #af2418; }
.decision-list > div:nth-child(4) { background: #eee3df; }

.change-only {
  min-height: 760px;
  padding: 84px clamp(28px, 7vw, 108px);
  color: var(--paper);
  background: var(--ink);
}
.change-only h2 { max-width: 950px; font-size: clamp(72px, 9vw, 138px); }
.change-only > p { max-width: 650px; margin: 42px 0 36px auto; font-size: clamp(20px, 2vw, 29px); }
.light-link { display: table; margin-left: auto; color: var(--amber); font-size: 18px; }

.final-cta {
  min-height: 620px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  padding: 86px clamp(28px, 5vw, 76px);
  background: var(--amber);
}
.final-cta .button { flex: 0 0 auto; margin-bottom: 10px; }
footer {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-right: clamp(24px, 3.5vw, 54px);
  border-top: 1px solid var(--ink);
  background: var(--amber);
  font-size: 14px;
}
.footer-brand { width: auto; padding-left: clamp(24px, 3.5vw, 54px); }

@media (prefers-reduced-motion: no-preference) {
  .route-diagram g > path:not(:last-child) {
    stroke-dasharray: 900;
    stroke-dashoffset: 900;
    animation: route-draw 1.1s cubic-bezier(.16, 1, .3, 1) .15s forwards;
  }
  .lamp { opacity: 0; animation: lamp-on .45s cubic-bezier(.16, 1, .3, 1) forwards; }
  .lamp-green { animation-delay: .72s; }
  .lamp-neutral { animation-delay: .9s; }
  .lamp-red { animation-delay: 1.08s; }
  @keyframes route-draw { to { stroke-dashoffset: 0; } }
  @keyframes lamp-on { 0% { transform: scale(.72); opacity: 0; } 70% { transform: scale(1.12); opacity: 1; } 100% { transform: scale(1); opacity: 1; } }
}

@media (min-width: 981px) and (max-width: 1500px) {
  .result:nth-child(1) { top: 134px; }
  .result:nth-child(2) { top: 259px; }
  .result:nth-child(3) { top: 384px; }
  .hold-status { bottom: 98px; }
  .board-caption { bottom: 24px; font-size: 11px; }
}

@media (max-width: 980px) {
  .site-header { position: relative; background: var(--amber); }
  .brand { width: auto; }
  .hero { height: auto; max-height: none; grid-template-columns: 1fr; }
  .hero-copy-panel { min-height: 660px; padding-top: 50px; }
  .signal-board { min-height: 650px; }
  .steps-preview { grid-template-columns: 1fr; }
  .code-wrap { border-top: 1px solid #bcb7af; border-left: 0; }
  .decisions { grid-template-columns: 1fr; }
  .decision-list { border-top: 1px solid var(--ink); border-left: 0; }
  .final-cta { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .site-header { height: 58px; }
  .brand { gap: 10px; padding-left: 18px; font-size: 19px; }
  .brand img { width: 34px; height: 34px; }
  .github-link { padding-right: 18px; font-size: 0; }
  .github-link::before { content: "GitHub"; font-size: 15px; }
  .hero-copy-panel { min-height: 590px; padding: 44px 20px 22px; }
  .hero h1 { font-size: clamp(66px, 21vw, 88px); }
  .hero-copy-panel > p:not(.route-line) { font-size: 19px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .button { width: 100%; }
  .signal-board { min-height: 690px; padding: 36px 20px; }
  .pull-request-id { top: 38px; left: 20px; }
  .route-note { top: 130px; left: 34px; font-size: 17px; }
  .route-diagram { top: 70px; left: 18px; width: 55%; height: 380px; }
  .rule-results { inset: 74px 18px auto auto; width: 42%; }
  .result { position: static; width: auto; height: 130px; }
  .result dt { font-size: 18px; }
  .result dd { font-size: 11px; }
  .hold-status { right: 20px; bottom: 80px; left: 20px; gap: 14px; min-height: 80px; padding: 14px 18px; }
  .hold-status strong { font-size: 30px; padding-right: 14px; }
  .hold-status span:last-child { font-size: 16px; }
  .hold-icon { width: 40px; height: 40px; font-size: 29px; }
  .board-caption { right: 20px; bottom: 30px; left: 20px; font-size: 7px; }
  .steps { grid-template-columns: 1fr; gap: 54px; padding: 64px 20px; }
  .steps p { max-width: 34ch; }
  .code-wrap { padding: 32px 20px; }
  .section-heading { padding: 72px 20px; }
  .section-heading h2, .change-only h2, .final-cta h2 { font-size: 58px; }
  .section-heading p { font-size: 19px; }
  .decision-list > div { min-height: 150px; grid-template-columns: 1fr; }
  .decision-list dt { min-height: 66px; border-right: 0; border-bottom: 1px solid var(--ink); }
  .decision-list dd { min-height: 84px; }
  .change-only { min-height: 650px; padding: 58px 20px; }
  .change-only > p { margin-top: 32px; font-size: 20px; }
  .final-cta { min-height: 500px; padding: 66px 20px; }
  .final-cta .button { width: 100%; padding: 0 18px; font-size: 20px; }
  footer { padding-right: 18px; }
  .footer-brand { padding-left: 18px; }
}