:root {
  --blue: #002163;
  --blue-ink: #0d2f70;
  --blue-quiet: #eaf1fb;
  --orange: #e9530e;
  --orange-dark: #b63d09;
  --orange-soft: #fff0e8;
  --paper: #f8fafc;
  --paper-warm: #fffdf9;
  --surface: #ffffff;
  --ink: #10213e;
  --muted: #60708a;
  --line: #dbe3ef;
  --line-strong: #b9c8dc;
  --shadow: 0 18px 50px rgb(0 33 99 / 0.12);
  --shadow-soft: 0 8px 24px rgb(15 23 42 / 0.08);
  --radius-sm: 0.7rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-pill: 999px;
  --shell: min(1180px, calc(100% - 3rem));
  --display: clamp(3.3rem, 7vw, 6.35rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.55;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-pill);
  color: var(--surface);
  background: var(--blue);
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgb(219 227 239 / 0.78);
  background: rgb(248 250 252 / 0.92);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5.4rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  width: 10.5rem;
}

.brand img {
  width: 100%;
  height: auto;
}

.site-navigation {
  display: flex;
  align-items: center;
  gap: 1.7rem;
  font-size: 0.85rem;
  font-weight: 750;
  letter-spacing: 0.025em;
}

.site-navigation a {
  text-decoration: none;
  transition: color 160ms ease;
}

.site-navigation a:hover {
  color: var(--orange-dark);
}

.site-navigation .nav-download {
  display: inline-flex;
  gap: 0.4rem;
  align-items: center;
  padding: 0.7rem 1.05rem;
  border-radius: var(--radius-pill);
  color: var(--surface);
  background: var(--orange-dark);
}

.site-navigation .nav-download:hover {
  color: var(--surface);
  background: var(--blue);
}

.menu-toggle {
  display: none;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--blue);
  background: var(--surface);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 750;
}

.menu-icon {
  display: grid;
  gap: 4px;
}

.menu-icon span {
  display: block;
  width: 1rem;
  height: 2px;
  background: currentColor;
}

.hero-section {
  position: relative;
  isolation: isolate;
  min-height: 720px;
  padding: 7.2rem 0 6rem;
  overflow: hidden;
  background: var(--paper);
}

.hero-section::before {
  position: absolute;
  z-index: -1;
  top: -10rem;
  right: -16rem;
  width: 58rem;
  height: 58rem;
  border-radius: 50%;
  background: rgb(0 33 99 / 0.045);
  content: "";
}

.hero-section::after {
  position: absolute;
  z-index: -1;
  top: 8rem;
  left: -4.5rem;
  width: 9rem;
  height: 9rem;
  border: 1px solid rgb(233 83 14 / 0.3);
  border-radius: 50%;
  content: "";
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(31rem, 1.1fr);
  gap: clamp(3rem, 7vw, 7.5rem);
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow {
  display: inline-flex;
  gap: 0.6rem;
  align-items: center;
  margin: 0 0 1.35rem;
  color: var(--orange-dark);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow-light {
  color: #ffb28f;
}

.eyebrow-mark {
  display: inline-block;
  width: 1.35rem;
  height: 0.45rem;
  border-top: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--blue);
  font-weight: 800;
  letter-spacing: -0.05em;
}

h1 {
  max-width: 8ch;
  margin-bottom: 1.65rem;
  font-size: var(--display);
  line-height: 0.94;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2.2rem, 4.5vw, 4.25rem);
  line-height: 0.98;
}

h3 {
  margin-bottom: 0.65rem;
  font-size: 1.3rem;
  line-height: 1.15;
}

.hero-lede {
  max-width: 35rem;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
}

.button {
  display: inline-flex;
  gap: 0.75rem;
  align-items: center;
  justify-content: center;
  min-height: 3.35rem;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-pill);
  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: var(--surface);
  background: var(--orange-dark);
  box-shadow: 0 10px 22px rgb(182 61 9 / 0.2);
}

.button-primary:hover {
  color: var(--surface);
  background: var(--blue);
  box-shadow: 0 12px 24px rgb(0 33 99 / 0.2);
}

.text-link {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  color: var(--blue);
  font-size: 0.93rem;
  font-weight: 800;
  text-decoration: none;
}

.text-link:hover {
  color: var(--orange-dark);
}

.text-link span {
  transition: transform 160ms ease;
}

.text-link:hover span {
  transform: translateX(3px);
}

.hero-note,
.download-note {
  display: flex;
  gap: 0.55rem;
  align-items: center;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 650;
}

.status-dot {
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgb(233 83 14 / 0.12);
}

.status-dot-light {
  background: #ffb28f;
  box-shadow: 0 0 0 4px rgb(255 178 143 / 0.15);
}

.hero-visual {
  position: relative;
  min-height: 510px;
  padding: 2.5rem 0 0 2rem;
}

.annotation-window {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border: 1px solid rgb(0 33 99 / 0.18);
  border-radius: 1.15rem;
  background: var(--surface);
  box-shadow: var(--shadow);
  transform: rotate(1.3deg);
}

.window-bar {
  display: flex;
  gap: 1rem;
  align-items: center;
  min-height: 2.8rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  background: var(--paper);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.window-controls {
  display: flex;
  gap: 0.3rem;
}

.window-controls span {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--line-strong);
}

.window-title {
  flex: 1;
}

.window-status {
  color: var(--orange-dark);
}

.window-body {
  display: grid;
  grid-template-columns: 10.5rem 1fr;
  min-height: 380px;
}

.window-sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  padding: 1.5rem 1.2rem;
  border-right: 1px solid var(--line);
  color: var(--muted);
  background: #f5f8fc;
  font-size: 0.78rem;
}

.window-sidebar strong {
  display: block;
  margin-bottom: 0.7rem;
  color: var(--blue);
  font-size: 0.92rem;
}

.sidebar-kicker,
.document-kicker,
.feature-number,
.footer-label {
  color: var(--orange-dark);
  font-size: 0.63rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.sidebar-line {
  display: flex;
  justify-content: space-between;
  padding: 0.38rem 0.45rem;
  border-radius: 0.35rem;
}

.sidebar-line.active {
  color: var(--blue);
  background: var(--orange-soft);
  font-weight: 800;
}

.sidebar-line b {
  color: var(--orange-dark);
  font-size: 0.67rem;
}

.document-pane {
  position: relative;
  padding: 1.8rem 2rem 1.3rem;
}

.document-heading {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
}

.document-heading h2 {
  margin: 0.45rem 0 0;
  font-size: 1.38rem;
  letter-spacing: -0.04em;
}

.review-chip {
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius-pill);
  color: var(--orange-dark);
  background: var(--orange-soft);
  font-size: 0.66rem;
  font-weight: 800;
  white-space: nowrap;
}

.document-rule {
  height: 1px;
  margin: 1.4rem 0 1.3rem;
  background: var(--line);
}

.document-text {
  max-width: 31rem;
  margin: 0 0 1.2rem;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.08rem;
  line-height: 1.85;
}

.document-text mark {
  padding: 0.12em 0.17em;
  color: var(--blue);
  background: #dceafc;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.document-text mark.orange-mark {
  color: var(--orange-dark);
  background: #ffe1d2;
}

.document-text.muted-line {
  color: #7c899c;
}

.annotation-callout {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  width: fit-content;
  margin: 1.7rem 0 0 2rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid #f3c5af;
  border-radius: 0.45rem;
  color: var(--orange-dark);
  background: #fff8f4;
  font-size: 0.7rem;
  font-weight: 800;
}

.annotation-callout small {
  display: block;
  margin-top: 0.17rem;
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 600;
}

.callout-line {
  width: 1.25rem;
  height: 1px;
  background: var(--orange);
}

.document-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 1.7rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 700;
}

.blueprint-label {
  position: absolute;
  color: var(--orange-dark);
  font-size: 0.62rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.blueprint-label-top {
  top: 0.65rem;
  left: 2.2rem;
}

.blueprint-label-side {
  top: 8.6rem;
  right: -1.3rem;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.blueprint-stamp {
  position: absolute;
  right: -1.8rem;
  bottom: 0.6rem;
  display: grid;
  place-items: center;
  width: 6.7rem;
  height: 6.7rem;
  border: 2px solid var(--orange);
  border-radius: 50%;
  color: var(--orange-dark);
  font-size: 0.72rem;
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: 0.08em;
  text-align: center;
  transform: rotate(-12deg);
}

.hero-grid-line {
  position: absolute;
  bottom: 0;
  width: 34%;
  height: 1px;
  background: var(--line-strong);
}

.hero-grid-line-left {
  left: 0;
}

.hero-grid-line-right {
  right: 0;
}

.signal-strip {
  color: var(--surface);
  background: var(--blue);
}

.signal-strip-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
  justify-content: center;
  min-height: 4.25rem;
  font-size: 0.77rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.signal-arrow {
  color: #8bb1ed;
}

.section {
  padding: 8.5rem 0;
}

.section-overview {
  background: var(--paper-warm);
}

.overview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.8fr);
  gap: 6rem;
  align-items: end;
}

.section-intro h2 {
  max-width: 9ch;
}

.overview-copy {
  max-width: 32rem;
  color: var(--muted);
  font-size: 1.02rem;
}

.overview-copy .section-lede {
  color: var(--ink);
  font-size: 1.2rem;
  line-height: 1.55;
}

.overview-copy p {
  margin-bottom: 1.6rem;
}

.dark-link {
  color: var(--orange-dark);
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 5rem;
}

.principle-card {
  position: relative;
  min-height: 18rem;
  padding: 1.6rem;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.principle-card h3 {
  margin-top: 5.3rem;
  margin-bottom: 0.6rem;
  font-size: 1.35rem;
}

.principle-card p {
  max-width: 18rem;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.55;
}

.principle-card-blue {
  color: #d9e9ff;
  background: var(--blue);
}

.principle-card-blue h3 {
  color: var(--surface);
}

.principle-card-paper {
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--surface);
}

.principle-card-orange {
  color: #713319;
  background: var(--orange-soft);
}

.principle-card-orange h3 {
  color: var(--orange-dark);
}

.principle-index {
  position: absolute;
  top: 1.6rem;
  right: 1.6rem;
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  opacity: 0.78;
}

.principle-icon {
  position: absolute;
  top: 1.25rem;
  left: 1.5rem;
  color: var(--orange);
  font-size: 4.6rem;
  font-weight: 300;
  line-height: 1;
}

.principle-card-paper .principle-icon {
  color: var(--blue);
}

.principle-card-orange .principle-icon {
  color: var(--orange-dark);
}

.section-workflow {
  background: var(--paper);
}

.section-heading-row {
  display: flex;
  gap: 3rem;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 4rem;
}

.section-heading-row h2 {
  max-width: 10ch;
  margin-bottom: 0;
}

.section-side-note {
  max-width: 15rem;
  margin: 0 0 0.25rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: right;
}

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

.workflow-step {
  display: grid;
  grid-template-columns: 5.5rem 2.5rem minmax(0, 1fr) 12rem;
  gap: 1rem;
  align-items: center;
  min-height: 10.5rem;
  border-bottom: 1px solid var(--line-strong);
}

.step-number {
  color: var(--orange-dark);
  font-size: 1.2rem;
  font-weight: 850;
  letter-spacing: 0.06em;
}

.step-marker {
  position: relative;
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid var(--blue);
  border-radius: 50%;
}

.step-marker::after {
  position: absolute;
  top: 2.4rem;
  left: 50%;
  width: 1px;
  height: 7.9rem;
  background: var(--line-strong);
  content: "";
}

.workflow-step:last-child .step-marker::after {
  display: none;
}

.step-marker span {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--orange);
}

.step-content h3 {
  margin-bottom: 0.45rem;
}

.step-content p {
  max-width: 34rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.step-tag {
  justify-self: end;
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-align: right;
}

.section-features {
  background: var(--paper-warm);
}

.features-heading {
  margin-bottom: 3rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 1rem;
}

.feature-card {
  min-height: 21rem;
  padding: 1.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.feature-card-large {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  border-color: var(--blue);
  background: var(--blue);
}

.feature-card-large h3,
.feature-card-large p,
.feature-card-large .feature-number {
  color: var(--surface);
}

.feature-card-large .feature-number {
  color: #a9c8f8;
}

.feature-card p {
  max-width: 16rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.91rem;
}

.feature-visual {
  position: relative;
  height: 10.5rem;
  margin: -0.5rem -0.4rem 1.4rem;
  border-bottom: 1px solid rgb(169 200 248 / 0.3);
}

.feature-visual::before,
.feature-visual::after {
  position: absolute;
  background: rgb(169 200 248 / 0.23);
  content: "";
}

.feature-visual::before {
  top: 50%;
  left: 10%;
  width: 80%;
  height: 1px;
}

.feature-visual::after {
  top: 14%;
  left: 50%;
  width: 1px;
  height: 72%;
}

.graph-node {
  position: absolute;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 4.3rem;
  height: 4.3rem;
  border: 1px solid #a9c8f8;
  border-radius: 50%;
  color: var(--surface);
  background: rgb(0 33 99 / 0.72);
  font-size: 0.48rem;
  font-weight: 850;
  letter-spacing: 0.07em;
}

.graph-node-a {
  top: 0.4rem;
  left: 9%;
}

.graph-node-b {
  right: 7%;
  bottom: 1rem;
}

.graph-node-c {
  bottom: 0.3rem;
  left: 42%;
  width: 3.4rem;
  height: 3.4rem;
  border-color: var(--orange);
  color: #ffe2d5;
  background: rgb(182 61 9 / 0.7);
}

.graph-link {
  position: absolute;
  z-index: 0;
  height: 1px;
  background: var(--orange);
  transform-origin: left;
}

.graph-link-a {
  top: 4.4rem;
  left: 22%;
  width: 40%;
  transform: rotate(20deg);
}

.graph-link-b {
  top: 5.4rem;
  left: 56%;
  width: 26%;
  transform: rotate(42deg);
}

.graph-link-c {
  bottom: 2.1rem;
  left: 20%;
  width: 47%;
  transform: rotate(-25deg);
}

.feature-card-copy h3 {
  margin-top: 0.6rem;
}

.feature-card:not(.feature-card-large) h3 {
  margin-top: 4.3rem;
}

.feature-mini-icon {
  display: grid;
  place-items: center;
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 0.85rem;
  font-size: 1.7rem;
  font-weight: 400;
}

.feature-mini-icon-orange {
  color: var(--orange-dark);
  background: var(--orange-soft);
}

.feature-mini-icon-blue {
  color: var(--blue);
  background: var(--blue-quiet);
}

.download-section {
  position: relative;
  overflow: hidden;
  color: var(--surface);
  background: var(--blue);
}

.download-section::before {
  position: absolute;
  right: -8rem;
  bottom: -16rem;
  width: 32rem;
  height: 32rem;
  border: 1px solid rgb(169 200 248 / 0.3);
  border-radius: 50%;
  box-shadow: 0 0 0 4rem rgb(169 200 248 / 0.05), 0 0 0 8rem rgb(169 200 248 / 0.04);
  content: "";
}

.download-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(32rem, 1.1fr);
  gap: 5rem;
  align-items: center;
  padding-top: 7rem;
  padding-bottom: 7rem;
}

.download-copy h2 {
  max-width: 8ch;
  color: var(--surface);
}

.download-copy > p:not(.eyebrow):not(.download-note) {
  max-width: 28rem;
  color: #c6d8f4;
  font-size: 1.08rem;
}

.download-note {
  color: #c6d8f4;
}

.download-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.download-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 15rem;
  padding: 1.5rem;
  border: 1px solid rgb(169 200 248 / 0.45);
  border-radius: var(--radius-lg);
  color: var(--surface);
  background: rgb(255 255 255 / 0.07);
  text-decoration: none;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.download-card:hover,
.download-card.is-recommended {
  border-color: #ffb28f;
  background: rgb(255 178 143 / 0.12);
  transform: translateY(-3px);
}

.download-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.platform-symbol {
  display: grid;
  place-items: center;
  width: 3.2rem;
  height: 3.2rem;
  border: 1px solid rgb(198 216 244 / 0.5);
  border-radius: 0.85rem;
  color: #c6d8f4;
  font-size: 1.7rem;
}

.platform-symbol-windows {
  font-size: 1.95rem;
}

.recommended-label {
  padding: 0.32rem 0.5rem;
  border-radius: var(--radius-pill);
  color: var(--blue);
  background: #ffb28f;
  font-size: 0.6rem;
  font-weight: 850;
}

.download-card-title {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-top: auto;
  color: var(--surface);
  font-size: 1.16rem;
  font-weight: 800;
}

.download-card-meta {
  margin-top: 0.45rem;
  color: #a8c0e4;
  font-size: 0.75rem;
}

.site-footer {
  color: var(--muted);
  background: var(--paper-warm);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 1fr;
  gap: 4rem;
  padding-top: 4.4rem;
  padding-bottom: 4.4rem;
}

.brand-footer {
  width: 11.5rem;
}

.footer-brand p {
  max-width: 16rem;
  margin: 1.15rem 0 0;
  font-size: 0.83rem;
}

.footer-links,
.footer-partners {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.83rem;
}

.footer-label {
  margin-bottom: 0.4rem;
  color: var(--blue);
}

.footer-links a {
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--orange-dark);
}

.partner-marks {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.partner-marks img {
  width: auto;
  max-width: 7rem;
  max-height: 2.2rem;
  object-fit: contain;
}

.partner-marks img:first-child {
  width: 6.4rem;
}

.partner-marks img:last-child {
  width: 7.3rem;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding: 1.1rem 0 1.5rem;
  border-top: 1px solid var(--line);
  font-size: 0.72rem;
}

@media (max-width: 1050px) {
  :root {
    --shell: min(100% - 2.5rem, 860px);
  }

  .hero-section {
    padding-top: 5.5rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

  .hero-copy {
    max-width: 42rem;
  }

  .hero-visual {
    max-width: 46rem;
    margin-inline: auto;
    width: 100%;
  }

  .overview-grid,
  .download-grid {
    gap: 3rem;
  }

  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }

  .feature-card-large {
    grid-column: span 2;
  }

  .download-grid {
    grid-template-columns: 1fr;
  }

  .download-copy h2 {
    max-width: 12ch;
  }
}

@media (max-width: 720px) {
  :root {
    --shell: calc(100% - 2rem);
  }

  .header-inner {
    min-height: 4.7rem;
  }

  .brand {
    width: 8.8rem;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-navigation {
    position: absolute;
    top: calc(100% + 0.6rem);
    right: 1rem;
    left: 1rem;
    display: none;
    align-items: stretch;
    gap: 0.25rem;
    padding: 0.55rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgb(255 255 255 / 0.98);
    box-shadow: var(--shadow-soft);
  }

  .site-navigation.is-open {
    display: flex;
    flex-direction: column;
  }

  .site-navigation a {
    padding: 0.8rem 0.75rem;
    border-radius: 0.55rem;
  }

  .site-navigation a:hover {
    background: var(--orange-soft);
  }

  .site-navigation .nav-download {
    justify-content: space-between;
    margin-top: 0.25rem;
    color: var(--surface);
    background: var(--orange-dark);
  }

  .hero-section {
    min-height: auto;
    padding: 4.6rem 0 4.5rem;
  }

  h1 {
    max-width: 9ch;
    font-size: clamp(3.2rem, 16vw, 5.3rem);
  }

  h2 {
    font-size: clamp(2.2rem, 12vw, 3.3rem);
  }

  .hero-visual {
    min-height: 410px;
    padding: 2rem 0 0;
  }

  .blueprint-label-side,
  .blueprint-stamp {
    display: none;
  }

  .annotation-window {
    transform: none;
  }

  .window-body {
    grid-template-columns: 1fr;
  }

  .window-sidebar {
    display: none;
  }

  .document-pane {
    padding: 1.4rem;
  }

  .document-heading {
    display: block;
  }

  .review-chip {
    margin-top: 0.9rem;
  }

  .document-footer {
    gap: 0.5rem;
    flex-direction: column;
  }

  .signal-strip-inner {
    justify-content: flex-start;
    padding-top: 1.15rem;
    padding-bottom: 1.15rem;
    font-size: 0.64rem;
  }

  .signal-arrow {
    display: none;
  }

  .section {
    padding: 5.8rem 0;
  }

  .overview-grid,
  .principles-grid,
  .feature-grid,
  .download-options,
  .footer-top {
    grid-template-columns: 1fr;
  }

  .overview-grid {
    gap: 2rem;
  }

  .section-intro h2 {
    max-width: 11ch;
  }

  .principles-grid {
    margin-top: 3rem;
  }

  .principle-card {
    min-height: 15.5rem;
  }

  .principle-card h3 {
    margin-top: 4.6rem;
  }

  .section-heading-row {
    display: block;
    margin-bottom: 2.8rem;
  }

  .section-heading-row h2 {
    max-width: 12ch;
  }

  .section-side-note {
    margin-top: 1.2rem;
    text-align: left;
  }

  .workflow-step {
    grid-template-columns: 3.5rem 2.5rem 1fr;
    gap: 0.7rem;
    min-height: 11rem;
  }

  .step-number {
    align-self: start;
    padding-top: 0.3rem;
    font-size: 0.93rem;
  }

  .step-content {
    padding: 1.4rem 0;
  }

  .step-content h3 {
    font-size: 1.15rem;
  }

  .step-content p {
    font-size: 0.87rem;
  }

  .step-tag {
    grid-column: 3;
    justify-self: start;
    margin-top: -1.8rem;
    padding-bottom: 1rem;
    text-align: left;
  }

  .step-marker::after {
    height: 8.7rem;
  }

  .feature-card-large {
    grid-column: auto;
  }

  .download-grid {
    gap: 2.8rem;
    padding-top: 5.8rem;
    padding-bottom: 5.8rem;
  }

  .download-options {
    gap: 0.8rem;
  }

  .download-card {
    min-height: 13.5rem;
  }

  .footer-top {
    gap: 2.8rem;
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }

  .footer-bottom {
    gap: 0.75rem;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}