:root {
  --ink: #10231d;
  --ink-soft: #29423a;
  --paper: #f5f1e8;
  --paper-deep: #e9e1d3;
  --card: #fffdf8;
  --line: #d4c9b8;
  --green: #1f6b54;
  --green-bright: #34a27c;
  --orange: #ef6b3a;
  --orange-ink: #a43b20;
  --orange-soft: #f8d5c5;
  --yellow: #f2c85b;
  --blue: #4d7f8d;
  --danger: #aa3f2d;
  --shadow: 0 24px 70px rgb(16 35 29 / 0.11);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --page: min(1240px, calc(100% - 40px));
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 112px;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 92% 8%, rgb(242 200 91 / 0.16), transparent 26rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

button,
input {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: white;
  background: var(--ink);
  border-radius: 8px;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.status-bar {
  display: flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 7px 20px;
  color: #fff8ed;
  background: var(--ink);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
}

.status-dot {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  background: var(--yellow);
  border: 2px solid rgb(255 255 255 / 0.45);
  border-radius: 50%;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  display: flex;
  width: 100%;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 12px max(20px, calc((100vw - 1240px) / 2));
  background: rgb(245 241 232 / 0.9);
  border-bottom: 1px solid rgb(16 35 29 / 0.12);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-content: center;
  gap: 3px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.24);
}

.brand-mark i {
  display: block;
  width: 21px;
  height: 3px;
  background: #fff;
  border-radius: 999px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 0.93rem;
  line-height: 1.15;
}

.brand small {
  margin-top: 3px;
  color: var(--ink-soft);
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
}

.primary-nav a {
  position: relative;
  font-size: 0.82rem;
  font-weight: 750;
  text-decoration: none;
}

.primary-nav a::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 2px;
  background: var(--orange);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 160ms ease;
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
  transform: scaleX(1);
}

main {
  overflow: hidden;
}

.hero {
  display: grid;
  width: var(--page);
  min-height: 690px;
  align-items: center;
  gap: clamp(48px, 7vw, 104px);
  grid-template-columns: minmax(0, 1.03fr) minmax(390px, 0.97fr);
  margin: 0 auto;
  padding: 74px 0 80px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--green);
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.safety-lead h2,
.closing-cta h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  letter-spacing: -0.045em;
}

.hero h1 {
  max-width: 760px;
  font-size: clamp(4.3rem, 8.7vw, 8.6rem);
  line-height: 0.79;
}

.hero h1::after {
  display: block;
  width: 112px;
  height: 8px;
  margin-top: 32px;
  background: var(--orange);
  border-radius: 999px;
  content: "";
}

.hero-summary {
  max-width: 680px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 19px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: white;
  background: var(--green);
  box-shadow: 0 12px 30px rgb(31 107 84 / 0.2);
}

.button-primary:hover {
  background: #185842;
  box-shadow: 0 16px 36px rgb(31 107 84 / 0.27);
}

.button-secondary {
  color: var(--ink);
  background: transparent;
  border-color: rgb(16 35 29 / 0.26);
}

.button-secondary:hover {
  background: var(--card);
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 30px 0 0;
  padding: 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 700;
  list-style: none;
}

.hero-notes li::before {
  margin-right: 7px;
  color: var(--green);
  content: "✓";
}

.system-figure {
  position: relative;
  margin: 0;
  padding: 22px;
  background: #dbe8df;
  border: 1px solid rgb(16 35 29 / 0.13);
  border-radius: 42px 42px 120px 42px;
  box-shadow: var(--shadow);
}

.system-figure > figcaption {
  margin-bottom: 14px;
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.system-figure > p {
  margin: 17px 10px 8px;
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.55;
}

.window-concept {
  position: relative;
  min-height: 475px;
  overflow: hidden;
  background:
    linear-gradient(90deg, transparent 48%, rgb(255 255 255 / 0.44) 48%, rgb(255 255 255 / 0.44) 52%, transparent 52%),
    linear-gradient(#b9d8dc 0 40%, #8bb4b0 100%);
  border: 18px solid #fffaf0;
  border-bottom-width: 30px;
  border-radius: 22px 22px 80px 22px;
  box-shadow: inset 0 0 0 1px rgb(16 35 29 / 0.16);
}

.concept-top-rail {
  position: absolute;
  z-index: 3;
  top: 22px;
  right: 32px;
  left: 32px;
  height: 24px;
  background: #e8e0d1;
  border: 2px solid #c8bcaa;
  border-radius: 6px;
}

.concept-shade {
  position: absolute;
  z-index: 2;
  top: 44px;
  right: 35px;
  left: 35px;
  height: 265px;
  background: repeating-linear-gradient(
    to bottom,
    #f6f0e5 0,
    #f6f0e5 9px,
    #d6cbbb 10px,
    #b9ad9c 14px,
    #eee5d7 15px,
    #eee5d7 22px
  );
  filter: drop-shadow(0 14px 10px rgb(16 35 29 / 0.16));
  clip-path: polygon(0 0, 100% 0, 96% 100%, 4% 100%);
}

.concept-bottom-rail {
  position: absolute;
  z-index: 4;
  top: 302px;
  right: 33px;
  left: 33px;
  height: 18px;
  background: #eee6d8;
  border: 2px solid #c8bcaa;
  border-radius: 5px;
}

.concept-motor {
  position: absolute;
  z-index: 7;
  top: 7px;
  right: 48px;
  width: 72px;
  height: 55px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--ink);
  border: 5px solid #466157;
  border-radius: 13px;
  box-shadow: 0 10px 20px rgb(16 35 29 / 0.3);
}

.concept-motor span,
.concept-anchor span,
.concept-control span {
  font-size: 0.58rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.concept-spool {
  position: absolute;
  z-index: 8;
  top: 41px;
  right: 61px;
  width: 46px;
  height: 17px;
  background: var(--orange);
  border: 4px solid #9e3d22;
  border-radius: 50%;
}

.concept-line {
  position: absolute;
  z-index: 6;
  top: 56px;
  right: 82px;
  width: 3px;
  height: 323px;
  background: var(--orange);
  box-shadow: 0 0 0 1px rgb(255 255 255 / 0.45);
}

.concept-anchor {
  position: absolute;
  z-index: 7;
  top: 304px;
  right: 54px;
  display: grid;
  width: 58px;
  height: 36px;
  place-items: center;
  color: var(--ink);
  background: var(--yellow);
  border: 2px solid #a9872d;
  border-radius: 6px 6px 15px 15px;
}

.concept-control {
  position: absolute;
  z-index: 7;
  right: 32px;
  bottom: 29px;
  display: grid;
  width: 110px;
  height: 64px;
  place-items: center;
  color: white;
  background: var(--green);
  border: 5px solid #8fc6af;
  border-radius: 14px;
  box-shadow: 0 13px 25px rgb(16 35 29 / 0.22);
}

.principles {
  display: grid;
  width: var(--page);
  gap: 1px;
  grid-template-columns: repeat(3, 1fr);
  margin: 0 auto 110px;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 14px 40px rgb(16 35 29 / 0.06);
}

.principles article {
  min-height: 220px;
  padding: 30px;
  background: var(--card);
}

.principle-number {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--green);
  background: #e2eee8;
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 850;
}

.principles h2 {
  margin: 28px 0 8px;
  font-size: 1.2rem;
  line-height: 1.25;
}

.principles p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.93rem;
}

.section {
  width: var(--page);
  margin: 0 auto;
  padding: 100px 0;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 52px;
}

.section-heading h2,
.safety-lead h2,
.closing-cta h2 {
  font-size: clamp(2.8rem, 5vw, 5.3rem);
  line-height: 0.96;
}

.section-heading > p:last-child,
.split-heading > p,
.safety-lead > p:last-child,
.closing-cta p {
  color: var(--ink-soft);
  font-size: 1.04rem;
}

.section-heading > p:last-child {
  max-width: 680px;
  margin: 24px 0 0;
}

.split-heading {
  display: grid;
  max-width: none;
  align-items: end;
  gap: 48px;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
}

.split-heading > p {
  max-width: 510px;
  margin: 0 0 3px;
}

.system-section {
  position: relative;
}

.system-section::before {
  position: absolute;
  z-index: -1;
  top: 130px;
  right: -180px;
  width: 420px;
  height: 420px;
  background: rgb(77 127 141 / 0.1);
  border-radius: 50%;
  content: "";
}

.flow {
  display: grid;
  margin: 0;
  padding: 0;
  counter-reset: flow;
  gap: 16px;
  grid-template-columns: repeat(3, 1fr);
  list-style: none;
}

.flow li {
  position: relative;
  display: flex;
  min-height: 130px;
  align-items: flex-start;
  gap: 18px;
  padding: 25px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.flow li:not(:nth-child(3n))::after {
  position: absolute;
  z-index: 2;
  top: 50%;
  right: -13px;
  width: 25px;
  height: 2px;
  background: var(--orange);
  content: "";
}

.flow li > span {
  color: var(--orange-ink);
  font-size: 0.72rem;
  font-weight: 900;
}

.flow strong,
.flow small {
  display: block;
}

.flow strong {
  margin-top: -4px;
  font-size: 1.1rem;
}

.flow small {
  margin-top: 7px;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.45;
}

.boundary-callout {
  display: grid;
  align-items: start;
  gap: 30px;
  grid-template-columns: 190px 1fr;
  margin-top: 24px;
  padding: 28px;
  color: #fff8eb;
  background: var(--ink);
  border-radius: var(--radius-md);
}

.boundary-callout strong {
  color: var(--yellow);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.boundary-callout p {
  margin: 0;
  color: #d5e1da;
}

.bom-section {
  width: 100%;
  max-width: none;
  padding-right: max(20px, calc((100vw - 1240px) / 2));
  padding-left: max(20px, calc((100vw - 1240px) / 2));
  background: var(--paper-deep);
}

.table-wrap,
.validation-table-wrap {
  overflow-x: auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 45px rgb(16 35 29 / 0.06);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

caption {
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

th,
td {
  padding: 18px 20px;
  border-bottom: 1px solid #e5ded2;
  text-align: left;
  vertical-align: top;
}

thead th {
  color: #f9f4e9;
  background: var(--ink);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

tbody th {
  min-width: 190px;
  font-size: 0.88rem;
}

tbody tr:last-child th,
tbody tr:last-child td {
  border-bottom: 0;
}

tbody tr:nth-child(even) {
  background: #faf6ee;
}

.bom-notes {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 18px;
}

.bom-notes article {
  padding: 23px;
  background: rgb(255 253 248 / 0.68);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.bom-notes h3 {
  margin: 0 0 7px;
  font-size: 1rem;
}

.bom-notes p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.part-grid {
  display: grid;
  gap: 15px;
  grid-template-columns: repeat(3, 1fr);
}

.part-card {
  min-height: 390px;
  padding: 25px;
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.part-card:nth-child(2),
.part-card:nth-child(5) {
  background: #e4eee9;
}

.part-card:nth-child(3) {
  background: #f4dfd5;
}

.part-glyph {
  position: relative;
  width: 100%;
  height: 130px;
  margin-bottom: 24px;
}

.bracket-glyph::before,
.bracket-glyph::after {
  position: absolute;
  background: var(--green);
  border-radius: 8px;
  content: "";
}

.bracket-glyph::before {
  top: 16px;
  left: 28%;
  width: 44%;
  height: 25px;
}

.bracket-glyph::after {
  top: 16px;
  left: 28%;
  width: 25px;
  height: 98px;
  box-shadow: 42px 37px 0 -2px var(--orange);
}

.spool-glyph::before,
.spool-glyph::after {
  position: absolute;
  top: 15px;
  border-radius: 50%;
  content: "";
}

.spool-glyph::before {
  left: calc(50% - 53px);
  width: 106px;
  height: 106px;
  background: var(--orange);
  border: 12px solid #f7a886;
  box-shadow: inset 0 0 0 16px #bd4d29;
}

.spool-glyph::after {
  top: 50px;
  left: calc(50% - 18px);
  width: 36px;
  height: 36px;
  background: var(--card);
}

.tray-glyph::before {
  position: absolute;
  top: 41px;
  left: 13%;
  width: 74%;
  height: 70px;
  background: var(--yellow);
  border: 6px solid #b58d2a;
  border-top: 0;
  border-radius: 4px 4px 18px 18px;
  content: "";
  box-shadow: inset 0 13px 0 rgb(255 255 255 / 0.3);
}

.box-glyph::before {
  position: absolute;
  top: 25px;
  left: 18%;
  width: 64%;
  height: 92px;
  background: var(--ink);
  border: 8px solid #456459;
  border-radius: 18px;
  content: "";
  box-shadow: inset 0 0 0 14px #1e7659;
}

.lid-glyph::before {
  position: absolute;
  top: 37px;
  left: 15%;
  width: 70%;
  height: 66px;
  background:
    repeating-linear-gradient(90deg, transparent 0 12px, #78978c 13px 17px),
    var(--ink);
  border: 6px solid #456459;
  border-radius: 14px;
  content: "";
}

.guide-glyph::before,
.guide-glyph::after {
  position: absolute;
  content: "";
}

.guide-glyph::before {
  top: 45px;
  left: 18%;
  width: 64%;
  height: 44px;
  background: var(--blue);
  border-radius: 22px;
}

.guide-glyph::after {
  top: 52px;
  left: calc(50% - 15px);
  width: 30px;
  height: 30px;
  background: var(--card);
  border-radius: 50%;
}

.part-type {
  margin: 0 0 5px;
  color: var(--green);
  font-size: 0.67rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.part-card h3 {
  margin: 0 0 16px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.7rem;
  font-weight: 500;
}

.part-card dl,
.part-card dl div {
  margin: 0;
}

.part-card dl div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0;
  border-top: 1px solid rgb(16 35 29 / 0.12);
  font-size: 0.78rem;
}

.part-card dt {
  color: var(--ink-soft);
}

.part-card dd {
  margin: 0;
  font-weight: 750;
  text-align: right;
}

.print-gate {
  display: grid;
  align-items: start;
  gap: 45px;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
  margin-top: 18px;
  padding: 32px;
  color: white;
  background: var(--green);
  border-radius: var(--radius-md);
}

.print-gate span {
  color: #a6d9c5;
  font-size: 0.69rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.print-gate h3 {
  margin: 12px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.7rem;
  font-weight: 500;
  line-height: 1.1;
}

.print-gate ol {
  margin: 0;
  padding-left: 22px;
  color: #e0eee8;
}

.print-gate li + li {
  margin-top: 8px;
}

.build-section {
  width: 100%;
  max-width: none;
  padding-right: max(20px, calc((100vw - 1240px) / 2));
  padding-left: max(20px, calc((100vw - 1240px) / 2));
  background: #e2ebe5;
}

.build-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.build-steps li {
  display: grid;
  gap: 35px;
  grid-template-columns: 74px minmax(0, 1fr);
  padding: 34px 0;
  border-top: 1px solid rgb(16 35 29 / 0.2);
}

.build-steps li:last-child {
  border-bottom: 1px solid rgb(16 35 29 / 0.2);
}

.step-index {
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  color: white;
  background: var(--ink);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 850;
}

.step-state {
  margin: 0 0 7px;
  color: var(--orange-ink);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.build-steps h3 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.45rem, 2.6vw, 2.2rem);
  font-weight: 500;
  line-height: 1.15;
}

.build-steps p:not(.step-state) {
  max-width: 820px;
  margin: 11px 0 10px;
  color: var(--ink-soft);
}

.build-steps strong {
  display: block;
  color: var(--green);
  font-size: 0.82rem;
}

.safety-section {
  display: grid;
  width: 100%;
  max-width: none;
  gap: 70px;
  grid-template-columns: minmax(300px, 0.75fr) minmax(0, 1.25fr);
  padding-right: max(20px, calc((100vw - 1240px) / 2));
  padding-left: max(20px, calc((100vw - 1240px) / 2));
  color: #fff8ed;
  background: var(--ink);
}

.safety-lead {
  position: sticky;
  top: 130px;
  align-self: start;
}

.safety-lead .eyebrow {
  color: var(--yellow);
}

.safety-lead > p:last-child {
  color: #cbdad3;
}

.safety-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, 1fr);
}

.safety-grid article {
  min-height: 220px;
  padding: 25px;
  background: rgb(255 255 255 / 0.055);
  border: 1px solid rgb(255 255 255 / 0.15);
  border-radius: var(--radius-md);
}

.safety-grid span {
  display: grid;
  width: 35px;
  height: 35px;
  place-items: center;
  color: var(--ink);
  background: var(--yellow);
  border-radius: 50%;
  font-size: 0.68rem;
  font-weight: 900;
}

.safety-grid h3 {
  margin: 36px 0 8px;
  font-size: 1.1rem;
}

.safety-grid p {
  margin: 0;
  color: #cbdad3;
  font-size: 0.87rem;
}

.validation-layout {
  display: grid;
  align-items: start;
  gap: 20px;
  grid-template-columns: minmax(0, 1.35fr) minmax(315px, 0.65fr);
}

.validation-table-wrap table {
  font-size: 0.82rem;
}

.validation-table tbody th {
  min-width: 165px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 9px;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 850;
  white-space: nowrap;
}

.badge::before {
  width: 7px;
  height: 7px;
  background: currentColor;
  border-radius: 50%;
  content: "";
}

.badge-source {
  color: #1a5c48;
  background: #d8eee5;
}

.badge-pending {
  color: #825024;
  background: #f5e6ca;
}

.badge-required {
  color: #8a2f22;
  background: #f7d7d0;
}

.field-checklist {
  display: grid;
  gap: 4px;
  padding: 27px;
  background: var(--ink);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
}

.checklist-kicker {
  margin: 0;
  color: var(--yellow);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.field-checklist h3 {
  margin: 8px 0 16px;
  color: white;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.55rem;
  font-weight: 500;
  line-height: 1.12;
}

.field-checklist label {
  display: grid;
  align-items: start;
  gap: 10px;
  grid-template-columns: 18px 1fr;
  padding: 10px 0;
  color: #e2eee8;
  border-top: 1px solid rgb(255 255 255 / 0.13);
  font-size: 0.79rem;
  line-height: 1.35;
}

.field-checklist input {
  width: 17px;
  height: 17px;
  margin: 1px 0 0;
  accent-color: var(--yellow);
}

.checklist-note {
  margin: 15px 0 0;
  color: #a7bdb3;
  font-size: 0.7rem;
}

.print-button {
  min-height: 44px;
  margin-top: 10px;
  color: var(--ink);
  background: var(--yellow);
  border: 0;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 850;
  cursor: pointer;
}

.print-button:hover {
  background: #ffdb73;
}

.faq-section {
  display: grid;
  align-items: start;
  gap: 70px;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
}

.faq-section .section-heading {
  position: sticky;
  top: 130px;
  margin: 0;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  font-size: 1rem;
  font-weight: 780;
  cursor: pointer;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  display: grid;
  width: 29px;
  height: 29px;
  flex: 0 0 auto;
  place-items: center;
  color: white;
  background: var(--green);
  border-radius: 50%;
  content: "+";
}

.faq-list details[open] summary::after {
  content: "–";
}

.faq-list details p {
  max-width: 660px;
  margin: -4px 0 23px;
  color: var(--ink-soft);
}

.closing-cta {
  display: flex;
  width: var(--page);
  min-height: 320px;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin: 45px auto 100px;
  padding: clamp(34px, 6vw, 68px);
  color: white;
  background: var(--orange);
  border-radius: 42px 42px 110px 42px;
  box-shadow: 0 24px 60px rgb(173 65 32 / 0.22);
}

.closing-cta .eyebrow {
  color: #4d1e10;
}

.closing-cta h2 {
  max-width: 760px;
}

.closing-cta p:last-child {
  margin: 20px 0 0;
  color: #542517;
  font-weight: 650;
}

.button-light {
  flex: 0 0 auto;
  color: var(--ink);
  background: white;
  box-shadow: 0 12px 32px rgb(74 27 13 / 0.18);
}

.site-footer {
  display: grid;
  width: var(--page);
  gap: 35px;
  grid-template-columns: 1fr 1fr;
  margin: 0 auto;
  padding: 42px 0 52px;
  border-top: 1px solid var(--line);
}

.site-footer strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.2rem;
  font-weight: 500;
}

.site-footer p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  justify-content: flex-end;
  gap: 8px;
}

.footer-meta span {
  padding: 6px 10px;
  color: var(--green);
  background: #dfebe5;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 800;
}

.footer-disclaimer {
  grid-column: 1 / -1;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

@media (max-width: 1050px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 60px;
  }

  .hero-copy {
    max-width: 820px;
  }

  .hero h1 {
    font-size: clamp(4.4rem, 12vw, 7.5rem);
  }

  .system-figure {
    max-width: 680px;
  }

  .flow,
  .part-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .flow li:not(:nth-child(3n))::after {
    display: none;
  }

  .safety-section {
    grid-template-columns: 1fr;
  }

  .safety-lead,
  .faq-section .section-heading {
    position: static;
  }

  .validation-layout {
    grid-template-columns: 1fr;
  }

  .field-checklist {
    grid-template-columns: repeat(2, 1fr);
  }

  .field-checklist > div,
  .checklist-note,
  .print-button {
    grid-column: 1 / -1;
  }
}

@media (max-width: 820px) {
  :root {
    --page: min(100% - 28px, 1240px);
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .primary-nav {
    width: 100%;
    overflow-x: auto;
    gap: 20px;
    padding: 3px 2px 5px;
    scrollbar-width: thin;
  }

  .primary-nav a {
    flex: 0 0 auto;
  }

  .principles,
  .bom-notes {
    grid-template-columns: 1fr;
  }

  .principles article {
    min-height: auto;
  }

  .split-heading,
  .print-gate,
  .faq-section {
    grid-template-columns: 1fr;
  }

  .split-heading {
    gap: 20px;
  }

  .split-heading > p {
    margin: 0;
  }

  .boundary-callout {
    gap: 10px;
    grid-template-columns: 1fr;
  }

  .closing-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .footer-meta {
    justify-content: flex-start;
  }
}

@media (max-width: 580px) {
  .status-bar {
    font-size: 0.62rem;
    letter-spacing: 0.055em;
  }

  .brand small {
    display: none;
  }

  .hero {
    gap: 38px;
    padding: 42px 0 55px;
  }

  .hero h1 {
    font-size: clamp(3.5rem, 19vw, 5.6rem);
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .system-figure {
    padding: 12px;
    border-radius: 28px 28px 70px 28px;
  }

  .window-concept {
    min-height: 380px;
    border-width: 12px;
    border-bottom-width: 24px;
  }

  .concept-shade {
    height: 220px;
  }

  .concept-bottom-rail,
  .concept-anchor {
    top: 257px;
  }

  .concept-line {
    height: 260px;
  }

  .principles {
    margin-bottom: 65px;
  }

  .section {
    padding: 72px 0;
  }

  .bom-section,
  .build-section,
  .safety-section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .section-heading h2,
  .safety-lead h2,
  .closing-cta h2 {
    font-size: 2.75rem;
  }

  .flow,
  .part-grid,
  .safety-grid,
  .field-checklist {
    grid-template-columns: 1fr;
  }

  .part-card {
    min-height: 360px;
  }

  .build-steps li {
    gap: 15px;
    grid-template-columns: 48px minmax(0, 1fr);
  }

  .step-index {
    width: 42px;
    height: 42px;
  }

  .field-checklist > div,
  .checklist-note,
  .print-button {
    grid-column: auto;
  }

  .closing-cta {
    min-height: 0;
    margin-bottom: 65px;
    border-radius: 28px 28px 70px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  :root {
    --page: 100%;
  }

  body {
    color: #000;
    background: #fff;
    font-size: 10pt;
  }

  .status-bar,
  .site-header,
  .hero,
  .principles,
  #system,
  #bom,
  #print,
  #build,
  #safety,
  .faq-section,
  .closing-cta,
  .site-footer,
  .section-heading,
  .validation-table-wrap,
  .print-button {
    display: none !important;
  }

  .validation-section {
    display: block;
    padding: 0;
  }

  .validation-layout {
    display: block;
  }

  .field-checklist {
    display: grid;
    color: #000;
    background: #fff;
    border: 2px solid #000;
    box-shadow: none;
  }

  .field-checklist h3,
  .field-checklist label,
  .checklist-note {
    color: #000;
  }

  .checklist-kicker {
    color: #000;
  }
}