:root {
  color-scheme: light;
  --page-bg: #FAF7F2;
  --ink: #1F1B2E;
  --accent: #6B5CA5;
  --deep: #443775;
  --soft: #ECE7F6;
  --tint: #F4F0F9;
  --line: #E2DCEB;
  --muted: #5B5670;
  --white: #FFFFFF;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-mono: "JetBrains Mono", "Noto Sans SC", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

html[data-palette="green"] {
  --accent: #1F7A5A;
  --deep: #14513C;
  --soft: #DDEFE6;
  --tint: #EEF5F0;
  --line: #D5E3DA;
  --muted: #4F5F57;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: auto;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--page-bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  overflow-wrap: break-word;
}

img,
video {
  max-width: 100%;
}

a {
  color: var(--deep);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible,
button:focus-visible,
[tabindex="0"]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

button {
  font: inherit;
}

button:disabled {
  color: var(--muted);
  cursor: not-allowed;
}

code,
pre,
.section-index,
.eyebrow,
.window-title,
.window-step,
.entry-label,
.boundary-index,
.list-number {
  font-family: var(--font-mono);
}

code {
  font-size: 0.91em;
  overflow-wrap: anywhere;
}

.container {
  width: 100%;
  max-width: 1312px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4.444vw, 64px);
}

.skip-link {
  position: absolute;
  z-index: 5;
  top: 8px;
  left: 8px;
  min-height: 44px;
  padding: 8px 14px;
  transform: translateY(-160%);
  background: var(--white);
  color: var(--deep);
  border: 2px solid var(--accent);
}

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

.site-header {
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  flex: 0 0 auto;
}

.brand-mark {
  display: grid;
  min-width: 50px;
  min-height: 38px;
  place-items: center;
  padding-inline: 8px;
  background: var(--accent);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  white-space: nowrap;
}

.primary-nav,
.language-switch {
  display: flex;
  align-items: center;
  gap: 8px;
}

.primary-nav a,
.language-switch > * {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  font-size: 16px;
}

.language-switch {
  gap: 2px;
  flex: 0 0 auto;
}

.language-switch [aria-current="page"] {
  color: var(--deep);
  font-weight: 700;
}

.language-switch button {
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--tint);
}

.hero-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 292px);
  align-items: start;
  gap: clamp(44px, 6.67vw, 96px);
  padding-block: 72px 0;
}

.hero-copy,
.spec-panel,
.readiness-copy,
.sample-panel,
.code-panel,
.flow-node {
  min-width: 0;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  color: var(--deep);
  font-size: 15px;
  font-weight: 500;
}

.eyebrow-rule {
  width: 32px;
  height: 3px;
  flex: 0 0 auto;
  background: var(--accent);
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--ink);
}

.hero h1 {
  margin: 28px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(48px, 6.67vw, 96px);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.hero h1 span {
  display: block;
}

.accent-text {
  color: var(--accent);
}

.hero-description {
  max-width: 640px;
  margin: 30px 0 0;
  font-size: 21px;
  line-height: 1.7;
}

.hero-description strong {
  font-weight: 700;
}

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

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 24px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
}

.button-primary {
  background: var(--accent);
  color: var(--white);
}

.button-secondary {
  background: transparent;
  color: var(--deep);
}

.spec-panel {
  padding-top: 4px;
  border-top: 3px solid var(--ink);
}

.spec-heading {
  margin: 12px 0 10px;
  font-size: 19px;
  line-height: 1.4;
}

.spec-list,
.trust-list,
.asset-list {
  margin: 0;
}

.spec-item {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.spec-item dt,
.trust-list dt,
.asset-list dt {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.spec-item dd,
.trust-list dd,
.asset-list dd {
  margin: 3px 0 0;
}

.tag-list,
.database-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-list span,
.database-list span {
  padding: 1px 7px;
  background: var(--soft);
  color: var(--deep);
  font-size: 14px;
}

.placeholder {
  display: inline;
  padding: 0 5px;
  background: var(--soft);
  color: var(--deep);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.hero-recording {
  margin-top: 64px;
}

dap-recording {
  display: block;
  min-width: 0;
}

.recording-window {
  margin: 0;
  border: 2px solid var(--ink);
  background: var(--page-bg);
}

.window-bar {
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 7px 14px;
  border-bottom: 2px solid var(--ink);
  background: var(--tint);
}

.window-dots {
  display: inline-flex;
  gap: 6px;
  flex: 0 0 auto;
}

.window-dots i {
  width: 9px;
  height: 9px;
  display: block;
  border-radius: 50%;
  background: var(--line);
}

.window-title {
  min-width: 0;
  flex: 1 1 auto;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.window-step {
  flex: 0 0 auto;
  color: var(--deep);
  font-size: 13px;
  line-height: 1.5;
  text-align: right;
}

.window-screen {
  min-width: 0;
  background: var(--soft);
}

.window-screen video {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  background: var(--soft);
  object-fit: cover;
}

.placeholder-screen {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  padding: 16px;
  background: var(--soft);
}

.storyboard {
  width: 100%;
  max-width: 720px;
  padding: 16px clamp(12px, 2.5vw, 28px);
  border: 1px dashed var(--accent);
  background: var(--page-bg);
}

.storyboard-title {
  margin: 0 0 3px;
  color: var(--deep);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
}

.storyboard-caption {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.storyboard-caption .placeholder {
  white-space: normal;
}

.storyboard-list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.storyboard-list li {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.45;
}

.storyboard-list time {
  color: var(--deep);
  font-family: var(--font-mono);
}

.section {
  padding-block: 112px;
}

.section-index {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.section h2 {
  margin: 15px 0 0;
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.28;
}

.current-section,
.ask-intro,
.readiness-intro,
.deployment-intro,
.contract-grid {
  display: grid;
  grid-template-columns: minmax(250px, 0.9fr) minmax(0, 1.5fr);
  align-items: start;
  gap: clamp(36px, 6.67vw, 96px);
}

.current-section {
  gap: clamp(36px, 6.67vw, 96px);
  padding-block: 96px;
}

.section-lead h2 {
  max-width: 440px;
  font-size: 44px;
}

.draft-label {
  display: inline-block;
  margin: 20px 0 0;
  padding: 2px 10px;
  background: var(--soft);
  color: var(--deep);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
}

.pain-list {
  margin: 0;
  padding: 0;
  border-top: 3px solid var(--ink);
  list-style: none;
}

.pain-list li {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  align-items: baseline;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.list-number {
  color: var(--muted);
  font-size: 15px;
}

.pain-list p {
  margin: 0;
  font-size: 23px;
  line-height: 1.55;
}

.pain-list strong {
  font-weight: 700;
}

.tinted-section {
  border-block: 1px solid var(--line);
  background: var(--tint);
}

.ask-section {
  padding-block: 112px;
}

.ask-intro {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
}

.ask-copy h2,
.readiness-copy h2 {
  font-size: 64px;
}

.section-description {
  max-width: 640px;
  margin: 20px 0 0;
  color: var(--ink);
  font-size: 19px;
  line-height: 1.75;
}

.principle-list {
  display: grid;
  gap: 8px;
  margin: 22px 0 0;
  padding-left: 22px;
}

.principle-list li::marker {
  color: var(--accent);
}

.evidence-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
  gap: 28px;
  margin-top: 64px;
}

.sample-panel,
.code-panel,
.readiness-panel {
  border-top: 3px solid var(--ink);
  background: var(--page-bg);
}

.panel-heading {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
}

.panel-heading h3 {
  margin: 0;
  font-size: 30px;
  line-height: 1.4;
}

.panel-heading p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
}

.sample-label {
  display: inline-block;
  flex: 0 0 auto;
  padding: 1px 8px;
  background: var(--soft);
  color: var(--deep);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
}

.evidence-steps {
  margin: 0;
  padding: 0 18px;
  list-style: none;
  counter-reset: none;
}

.evidence-step {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.step-index,
.secondary-label {
  display: block;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
}

.question-sample {
  margin: 8px 0 0;
  font-weight: 700;
}

.secondary-label {
  margin-top: 12px;
}

.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 6px;
}

.keyword-list code {
  padding: 2px 8px;
  background: var(--soft);
  color: var(--deep);
}

.round-list {
  display: grid;
  gap: 5px;
  margin-top: 8px;
}

.round-list p {
  display: grid;
  grid-template-columns: 35px 76px minmax(0, 1fr);
  align-items: baseline;
  gap: 8px;
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
}

.round-list b {
  color: var(--deep);
  font-family: var(--font-mono);
  font-weight: 700;
}

.round-list code {
  color: var(--muted);
}

.asset-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.asset-list > div {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 12px;
}

.asset-list dt,
.asset-list dd {
  min-width: 0;
  overflow-wrap: anywhere;
}

.asset-list dd {
  margin: 0;
}

.evidence-sources > div {
  grid-template-columns: minmax(130px, 0.75fr) minmax(0, 1fr);
}

.sample-note {
  margin: 14px 18px 18px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.code-panel {
  min-width: 0;
}

.code-block {
  max-width: 100%;
  margin: 0;
  padding: 18px;
  overflow-x: auto;
  background: var(--tint);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.75;
  tab-size: 2;
}

.code-block:focus-visible,
.table-scroll:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.code-block code {
  font-size: inherit;
  overflow-wrap: normal;
  white-space: pre;
}

.api-explainer {
  padding: 18px;
  border-top: 1px solid var(--line);
}

.api-explainer h4 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 900;
  line-height: 1.4;
}

.api-explainer p {
  margin: 7px 0 0;
  font-size: 16px;
}

.api-explainer .api-path {
  margin-top: 14px;
}

.readiness-section {
  padding-block: 112px 128px;
}

.readiness-intro {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  align-items: start;
}

.readiness-copy .section-description {
  margin-bottom: 28px;
}

.readiness-copy .recording-window {
  margin-top: 22px;
}

.readiness-panel {
  padding-bottom: 18px;
}

.readiness-panel .panel-heading {
  background: var(--tint);
}

.readiness-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 18px 18px 0;
  list-style: none;
}

.readiness-row {
  min-width: 0;
}

.readiness-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-weight: 700;
}

.readiness-meta > :last-child {
  font-family: var(--font-mono);
  font-size: 15px;
}

.readiness-track {
  height: 10px;
  margin-top: 5px;
  border: 1px solid var(--line);
  background: var(--tint);
}

.readiness-track span {
  height: 100%;
  display: block;
  background: var(--accent);
}

.readiness-track.is-low span {
  background: var(--muted);
}

.readiness-row p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
}

.status-pending {
  margin-left: 5px;
  padding: 0 5px;
  background: var(--soft);
  color: var(--deep);
}

.chart-note {
  margin: 18px 18px 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.boundary-section .section {
  position: relative;
  padding-block: 72px;
}

.boundary-heading {
  position: relative;
  max-width: 760px;
  padding-right: 160px;
}

.boundary-heading h2 {
  font-size: 88px;
}

.boundary-heading .section-description {
  max-width: 700px;
}

.not-mark {
  position: absolute;
  top: -16px;
  right: 12px;
  color: var(--soft);
  font-family: var(--font-serif);
  font-size: 300px;
  font-weight: 900;
  line-height: 1;
}

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px 48px;
  margin-top: 52px;
}

.boundary-item {
  padding-top: 14px;
  border-top: 2px solid var(--accent);
}

.boundary-index {
  color: var(--deep);
  font-size: 14px;
}

.boundary-item h3 {
  margin: 7px 0 0;
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 900;
  line-height: 1.3;
}

.boundary-item p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.boundary-note {
  margin: 44px 0 0;
  max-width: 720px;
}

.boundary-note strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 900;
  line-height: 1.4;
}

.boundary-note span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 19px;
}

.deployment-section {
  padding-block: 112px;
}

.deployment-intro {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
  gap: clamp(36px, 6.67vw, 96px);
}

.deployment-intro h2 {
  max-width: 500px;
  font-size: 44px;
}

.trust-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
  border-top: 3px solid var(--ink);
}

.trust-list > div {
  min-width: 0;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.trust-list dd {
  overflow-wrap: anywhere;
}

.compatibility {
  margin-top: 72px;
}

.compatibility-heading h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.4;
}

.compatibility-heading p {
  margin: 9px 0 0;
  color: var(--muted);
}

.table-scroll {
  width: 100%;
  max-width: 100%;
  margin-top: 28px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  border: 1px solid var(--line);
  background: var(--white);
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  text-align: left;
}

thead {
  background: var(--tint);
  color: var(--deep);
}

th,
td {
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

th {
  font-size: 15px;
  font-weight: 700;
}

tbody th {
  color: var(--ink);
  font-weight: 500;
}

tbody td:last-child {
  color: var(--muted);
}

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

.badge-verified,
.badge-compatible {
  display: inline-block;
  padding: 0 11px;
  border-radius: 999px;
  font-size: 14px;
  line-height: 1.8;
  white-space: nowrap;
}

.badge-verified {
  background: var(--accent);
  color: var(--white);
}

.badge-compatible {
  background: var(--soft);
  color: var(--deep);
}

.onboarding-section .section {
  padding-block: 112px;
}

.onboarding-heading {
  max-width: 800px;
}

.onboarding-heading h2 {
  font-size: 64px;
}

.flow-list {
  display: grid;
  grid-template-columns: minmax(130px, 1fr) 28px minmax(150px, 1.2fr) 28px minmax(160px, 1.2fr) 28px minmax(140px, 1fr) 28px minmax(120px, 0.9fr);
  align-items: center;
  gap: 8px;
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
}

.flow-node {
  min-height: 144px;
  padding: 16px;
  border-top: 3px solid var(--accent);
  background: var(--page-bg);
}

.flow-node h3 {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.flow-node p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.flow-node a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  margin-top: 7px;
  font-size: 16px;
  overflow-wrap: anywhere;
}

.flow-arrow {
  color: var(--deep);
  text-align: center;
}

.flow-arrow::before {
  content: "→";
  font-family: var(--font-mono);
  font-size: 22px;
}

.flow-placeholder {
  display: inline-block;
  margin-top: 7px;
  font-size: 16px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.contract-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  align-items: start;
  gap: 48px;
  margin-top: 64px;
  scroll-margin-top: 20px;
}

.contract-panel .sample-note {
  margin-bottom: 18px;
}

.responsibility-list {
  border-top: 3px solid var(--ink);
}

.responsibility-list > div {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.responsibility-list h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 900;
  line-height: 1.3;
}

.responsibility-list p {
  margin: 6px 0 0;
  color: var(--muted);
}

.open-source-section {
  padding-block: 112px;
}

.open-source-section > h2 {
  max-width: 850px;
  font-size: 44px;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 36px;
  margin-top: 36px;
  border-top: 3px solid var(--ink);
}

.entry-link {
  min-width: 0;
  min-height: 94px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--deep);
  text-decoration: none;
}

a.entry-link:hover .entry-url {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.entry-label {
  color: var(--muted);
  font-size: 14px;
}

.entry-url {
  overflow-wrap: anywhere;
}

.entry-link-placeholder .entry-url {
  color: var(--ink);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--tint);
}

.footer-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 16px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.footer-inner p {
  margin: 0;
}

@media (max-width: 1100px) {
  .hero-intro {
    grid-template-columns: minmax(0, 1fr) minmax(230px, 260px);
    gap: 36px;
  }

  .flow-list {
    grid-template-columns: minmax(110px, 1fr) 20px minmax(120px, 1.1fr) 20px minmax(130px, 1.2fr) 20px minmax(120px, 1fr) 20px minmax(100px, 0.9fr);
    gap: 5px;
  }

  .flow-node {
    padding: 12px;
  }
}

@media (max-width: 900px) {
  .hero-intro,
  .current-section,
  .ask-intro,
  .readiness-intro,
  .deployment-intro,
  .contract-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .spec-panel {
    max-width: 600px;
  }

  .evidence-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-intro {
    padding-top: 56px;
  }

  .flow-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 5px;
  }

  .flow-node {
    min-height: 0;
  }

  .flow-arrow {
    min-height: 25px;
    line-height: 1;
  }

  .flow-arrow::before { content: "↓"; }
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .container {
    padding-inline: 20px;
  }

  .header-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 4px 10px;
    padding-block: 8px 10px;
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
    gap: 9px;
  }

  .brand-mark {
    min-width: 46px;
    min-height: 36px;
  }

  .brand-name {
    font-size: 16px;
  }

  .language-switch {
    grid-column: 2;
    grid-row: 1;
  }

  .primary-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    gap: 4px;
    border-top: 1px solid var(--line);
  }

  .primary-nav a,
  .language-switch > * {
    padding-inline: 8px;
    font-size: 15px;
  }

  .hero-intro {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
    padding-top: 40px;
  }

  .eyebrow {
    font-size: 14px;
  }

  .hero h1 {
    margin-top: 22px;
    font-size: 46px;
    line-height: 1.15;
    letter-spacing: -0.025em;
  }

  .hero-description {
    margin-top: 20px;
    font-size: 18px;
  }

  .hero-actions {
    gap: 10px;
    margin-top: 24px;
  }

  .button {
    min-height: 48px;
    padding-inline: 16px;
    font-size: 16px;
  }

  .spec-panel {
    max-width: none;
  }

  .spec-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 18px;
  }

  .spec-item {
    min-width: 0;
  }

  .hero-recording {
    margin-top: 40px;
  }

  .window-bar {
    min-height: 44px;
    gap: 8px;
    padding: 6px 8px;
  }

  .window-dots {
    gap: 4px;
  }

  .window-dots i {
    width: 7px;
    height: 7px;
  }

  .window-title {
    font-size: 12px;
  }

  .window-step {
    font-size: 11px;
  }

  .section,
  .ask-section,
  .deployment-section,
  .open-source-section,
  .onboarding-section .section {
    padding-block: 56px;
  }

  .section h2,
  .section-lead h2,
  .deployment-intro h2,
  .open-source-section > h2 {
    font-size: 30px;
  }

  .section-index {
    font-size: 13px;
  }

  .current-section,
  .ask-intro,
  .readiness-intro,
  .deployment-intro,
  .contract-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .current-section {
    gap: 30px;
    padding-block: 48px;
  }

  .section-lead h2 {
    max-width: 100%;
  }

  .pain-list li {
    grid-template-columns: 24px minmax(0, 1fr);
    gap: 16px;
    padding-block: 20px;
  }

  .pain-list p {
    font-size: 19px;
  }

  .ask-section,
  .onboarding-section .section {
    padding-block: 56px;
  }

  .ask-copy h2,
  .readiness-copy h2 {
    font-size: 38px;
  }

  .boundary-heading h2 {
    font-size: 42px;
  }

  .onboarding-heading h2 {
    font-size: 30px;
  }

  .section-description {
    margin-top: 14px;
    font-size: 17px;
  }

  .principle-list {
    margin-top: 16px;
  }

  .evidence-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    margin-top: 40px;
  }

  .panel-heading {
    min-height: 60px;
    gap: 9px;
    padding: 10px 12px;
  }

  .panel-heading h3 {
    font-size: 22px;
  }

  .panel-heading p {
    font-size: 16px;
  }

  .sample-label {
    font-size: 14px;
  }

  .evidence-steps {
    padding-inline: 12px;
  }

  .asset-list > div,
  .evidence-sources > div {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 8px;
  }

  .round-list p {
    grid-template-columns: 30px 65px minmax(0, 1fr);
    gap: 5px;
    font-size: 14px;
  }

  .sample-note,
  .api-explainer {
    margin-inline: 12px;
  }

  .api-explainer {
    padding: 14px 0 0;
  }

  .api-explainer h4 {
    font-size: 22px;
  }

  .api-explainer p {
    font-size: 16px;
  }

  .code-block {
    padding: 14px 12px;
    font-size: 14px;
  }

  .readiness-intro {
    gap: 30px;
  }

  .readiness-section {
    padding-block: 56px 64px;
  }

  .readiness-copy .section-description {
    margin-bottom: 20px;
  }

  .readiness-list {
    gap: 12px;
    padding-inline: 12px;
  }

  .chart-note {
    margin-inline: 12px;
  }

  .boundary-section .section {
    padding-block: 36px;
  }

  .boundary-heading {
    padding-right: 72px;
  }

  .boundary-heading h2 {
    font-size: 42px;
  }

  .not-mark {
    display: none;
  }

  .boundary-item h3,
  .responsibility-list h3 {
    font-size: 22px;
  }

  .boundary-item p {
    font-size: 16px;
  }

  .boundary-note {
    margin-top: 30px;
  }

  .boundary-note strong {
    font-size: 24px;
  }

  .boundary-note span {
    font-size: 17px;
  }

  .boundary-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    margin-top: 34px;
  }

  .boundary-note {
    margin-top: 30px;
  }

  .deployment-intro {
    gap: 28px;
  }

  .trust-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .compatibility {
    margin-top: 48px;
  }

  .compatibility-heading h3 {
    font-size: 24px;
  }

  .compatibility-heading p {
    font-size: 16px;
  }

  .table-scroll {
    margin-top: 20px;
  }

  th,
  td {
    padding: 12px 14px;
  }

  .flow-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 5px;
    margin-top: 30px;
  }

  .flow-node {
    grid-column: 1;
    grid-row: auto;
    min-height: 0;
    padding: 14px;
  }

  .flow-arrow {
    display: block;
    grid-column: 1;
    grid-row: auto;
    min-height: 25px;
    line-height: 1;
  }

  .flow-arrow::before {
    content: "↓";
    font-size: 20px;
  }

  .contract-grid {
    gap: 28px;
    margin-top: 40px;
  }

  .entry-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    margin-top: 26px;
  }

  .entry-link {
    min-height: 82px;
  }

  .footer-inner {
    min-height: 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding-block: 18px;
    font-size: 16px;
  }
}