:root {
  --paper: #f4f1e9;
  --paper-deep: #ebe6dc;
  --surface: #fbfaf6;
  --surface-soft: #f7f4ed;
  --ink: #20211e;
  --ink-soft: #5f625d;
  --line: #d8d1c5;
  --line-strong: #b9b0a1;
  --blue: #506c82;
  --blue-soft: #dfe8ee;
  --forest: #20352f;
  --forest-soft: #dfe9e2;
  --gold: #aa8854;
  --burgundy: #744c48;
  --shadow-soft: 0 16px 44px rgba(44, 42, 36, 0.11);
  --shadow-lift: 0 24px 64px rgba(34, 33, 28, 0.16);
  --latin-serif: "Iowan Old Style", Baskerville, Georgia, "Times New Roman", serif;
  --cjk-serif: "Songti SC", STSong, "Noto Serif CJK SC", "Noto Serif SC", serif;
  --cjk-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
  --serif: var(--latin-serif);
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", var(--cjk-sans);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

html[lang="zh-CN"] {
  --serif: var(--cjk-serif);
  --sans: var(--cjk-sans);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html[lang="zh-CN"] body {
  line-height: 1.82;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

p,
h1,
h2,
h3,
blockquote,
figure,
pre {
  margin: 0;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

html[lang="zh-CN"] h2,
html[lang="zh-CN"] h3 {
  line-height: 1.22;
}

html[lang="zh-CN"] .hero-principle {
  line-height: 1.35;
}

p {
  text-wrap: pretty;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  color: var(--surface);
  background: var(--ink);
  border-radius: 4px;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 68px;
  background: var(--paper);
  border-bottom: 1px solid rgba(185, 176, 161, 0.55);
  transition: box-shadow 180ms ease, background-color 180ms ease;
}

.site-header.is-scrolled {
  background: #f7f4ed;
  box-shadow: 0 8px 24px rgba(37, 36, 31, 0.08);
}

.nav-shell {
  width: min(1240px, calc(100% - 48px));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  font-family: var(--latin-serif);
  font-size: 21px;
  font-weight: 700;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(27, 40, 36, 0.12);
}

.nav-drawer {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 38px;
}

.nav-drawer nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-drawer nav a,
.footer-links a {
  position: relative;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 650;
}

.nav-drawer nav a::after,
.footer-links a::after {
  position: absolute;
  right: 0;
  bottom: -6px;
  left: 0;
  height: 1px;
  background: var(--ink);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.nav-drawer nav a:hover::after,
.footer-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.language-switch {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
}

.language-switch button {
  min-width: 44px;
  padding: 5px 8px;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 750;
}

.language-switch button[aria-pressed="true"] {
  color: var(--surface);
  background: var(--forest);
}

.nav-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 17px;
  color: var(--surface);
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 750;
  transition: background-color 180ms ease, color 180ms ease;
}

.nav-download:hover {
  color: var(--ink);
  background: transparent;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}

.menu-toggle::before,
.menu-toggle::after,
.menu-toggle > span:first-child {
  position: absolute;
  left: 10px;
  width: 20px;
  height: 1px;
  background: var(--ink);
  content: "";
  transition: transform 180ms ease, top 180ms ease, opacity 180ms ease;
}

.menu-toggle::before {
  top: 13px;
}

.menu-toggle > span:first-child {
  top: 20px;
}

.menu-toggle::after {
  top: 27px;
}

.menu-toggle[aria-expanded="true"]::before {
  top: 20px;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] > span:first-child {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"]::after {
  top: 20px;
  transform: rotate(-45deg);
}

.hero {
  position: relative;
  height: 82svh;
  min-height: 560px;
  max-height: 820px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-art,
.hero-wash {
  position: absolute;
  inset: 0;
}

.hero-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 50%;
  filter: saturate(0.78) contrast(0.94);
  opacity: 0.9;
  transform: scale(1.015);
}

.hero-wash {
  background: rgba(244, 241, 233, 0.7);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1240px, calc(100% - 64px));
  height: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding-bottom: 48px;
}

.eyebrow {
  margin-bottom: 16px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.3;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 780px;
  font-family: var(--latin-serif);
  font-size: 104px;
  font-weight: 500;
  line-height: 0.94;
}

.hero-principle {
  margin-top: 22px;
  font-family: var(--serif);
  font-size: 34px;
  line-height: 1.15;
}

.hero-copy {
  max-width: 590px;
  margin-top: 24px;
  color: #3f423d;
  font-size: 19px;
  line-height: 1.78;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 21px;
  border: 1px solid var(--ink);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 750;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

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

.button-primary {
  color: var(--surface);
  background: var(--ink);
}

.button-primary:hover {
  color: var(--ink);
  background: var(--surface);
}

.button-secondary {
  color: var(--ink);
  background: rgba(251, 250, 246, 0.68);
}

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

.build-note {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 12px;
}

.hero-cue {
  position: absolute;
  right: 36px;
  bottom: 27px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 15px;
}

.hero-cue span:last-child {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.promise-strip {
  min-height: 120px;
  padding: 0 max(24px, calc((100% - 1240px) / 2));
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  color: #f5f2ea;
  background: var(--forest);
}

.promise-item {
  min-width: 0;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  gap: 18px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.promise-item:first-child {
  padding-left: 0;
}

.promise-item:last-child {
  padding-right: 0;
  border-right: 0;
}

.promise-item strong,
.promise-item span:not(.promise-mark) {
  display: block;
}

.promise-item strong {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
}

.promise-item span:not(.promise-mark) {
  margin-top: 3px;
  color: rgba(245, 242, 234, 0.7);
  font-size: 12px;
}

.promise-mark {
  position: relative;
  width: 29px;
  height: 34px;
  flex: none;
}

.promise-mark::before,
.promise-mark::after {
  position: absolute;
  content: "";
}

.promise-mark-book::before {
  inset: 3px 2px 3px 14px;
  border: 1px solid #d8bc80;
  border-left: 0;
}

.promise-mark-book::after {
  inset: 3px 14px 3px 2px;
  border: 1px solid #d8bc80;
  border-right: 0;
}

.promise-mark-local::before {
  left: 5px;
  bottom: 3px;
  width: 19px;
  height: 21px;
  border: 1px solid #9fb9c8;
}

.promise-mark-local::after {
  left: 10px;
  top: 3px;
  width: 9px;
  height: 9px;
  border-top: 1px solid #9fb9c8;
  border-left: 1px solid #9fb9c8;
  transform: rotate(45deg);
}

.promise-mark-note::before {
  inset: 2px 5px;
  border: 1px solid #d9c7a4;
}

.promise-mark-note::after {
  left: 10px;
  top: 9px;
  width: 10px;
  height: 8px;
  border-top: 1px solid #d9c7a4;
  border-bottom: 1px solid #d9c7a4;
}

.section-pad {
  padding: 148px 0;
}

.section-shell {
  width: min(1200px, calc(100% - 64px));
  margin: 0 auto;
}

.section-heading h2,
.modes-header h2,
.principle-statement h2,
.workflow-heading h2,
.roundtable-copy h2,
.memory-copy h2,
.privacy-layout h2,
.download-copy h2,
.faq-layout h2 {
  font-family: var(--serif);
  font-size: 52px;
  font-weight: 500;
  line-height: 1.08;
}

.intro-section {
  background: var(--surface);
}

.intro-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 128px;
  align-items: end;
}

.section-heading h2 {
  max-width: 760px;
}

.intro-copy {
  padding-bottom: 3px;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.82;
}

.intro-emphasis {
  margin-top: 26px;
  padding-left: 20px;
  color: var(--ink);
  border-left: 2px solid var(--gold);
  font-family: var(--serif);
  font-size: 21px;
}

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

.modes-header {
  margin-bottom: 62px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 110px;
  align-items: end;
}

.modes-header > p {
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.78;
}

.mode-stage {
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.mode-controls {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.mode-tab {
  min-height: 72px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 15px;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  border-right: 1px solid var(--line);
  cursor: pointer;
  text-align: left;
  transition: color 180ms ease, background-color 180ms ease;
}

.mode-tab:last-child {
  border-right: 0;
}

.mode-tab span {
  color: var(--gold);
  font-family: var(--serif);
  font-size: 14px;
}

.mode-tab strong {
  font-size: 15px;
}

.mode-tab:hover {
  color: var(--ink);
  background: rgba(251, 250, 246, 0.62);
}

.mode-tab.is-active {
  color: var(--surface);
  background: var(--forest);
}

.mode-tab.is-active span {
  color: #d7bf8b;
}

.mode-panel {
  padding: 64px 0 68px;
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  gap: 76px;
  align-items: center;
}

.mode-copy {
  padding-left: 6px;
}

.mode-label {
  margin-bottom: 14px;
  color: var(--burgundy);
  font-size: 12px;
  font-weight: 800;
}

.mode-copy h3 {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 500;
  line-height: 1.14;
}

.mode-copy > p:not(.mode-label) {
  margin-top: 20px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.78;
}

.mode-copy ul {
  margin-top: 28px;
  list-style: none;
}

.mode-copy li {
  position: relative;
  padding: 9px 0 9px 20px;
  border-bottom: 1px solid var(--line);
  color: #424540;
  font-size: 14px;
}

.mode-copy li::before {
  position: absolute;
  top: 17px;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--blue);
  border-radius: 50%;
  content: "";
}

.product-frame,
.roundtable-frame {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  box-shadow: var(--shadow-lift);
}

.product-frame::before,
.roundtable-frame::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.65);
  content: "";
  pointer-events: none;
}

.product-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center top;
  transition: opacity 160ms ease;
}

.product-frame img.is-changing {
  opacity: 0.25;
}

.product-frame figcaption {
  padding: 12px 16px;
  color: var(--ink-soft);
  background: var(--surface);
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.principle-section {
  background: var(--surface);
}

.principle-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(480px, 1.14fr);
  gap: 122px;
  align-items: center;
}

.principle-statement > p:not(.eyebrow) {
  max-width: 520px;
  margin-top: 26px;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.82;
}

.principle-statement blockquote {
  margin-top: 36px;
  padding: 21px 0 21px 24px;
  color: var(--forest);
  border-left: 3px solid var(--forest);
  font-family: var(--serif);
  font-size: 23px;
  line-height: 1.4;
}

.evidence-demo {
  padding-left: 38px;
  border-left: 1px solid var(--line-strong);
}

.evidence-step {
  position: relative;
  min-height: 78px;
  padding: 0 0 24px 58px;
  display: flex;
  align-items: flex-start;
}

.evidence-step:not(:nth-child(3))::after {
  position: absolute;
  top: 34px;
  bottom: -2px;
  left: 17px;
  width: 1px;
  background: var(--line-strong);
  content: "";
}

.evidence-step > span {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 35px;
  height: 35px;
  color: var(--blue);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 12px;
}

.evidence-step strong {
  display: block;
  font-family: var(--serif);
  font-size: 19px;
}

.evidence-step p {
  margin-top: 2px;
  color: var(--ink-soft);
  font-size: 14px;
}

.evidence-answer {
  margin-top: 12px;
  padding: 24px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.answer-head,
.source-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.answer-head > span:first-child {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
}

.grounded-tag {
  padding: 3px 8px;
  color: #596e48;
  background: var(--forest-soft);
  border-radius: 3px;
  font-size: 11px;
  font-weight: 750;
}

.evidence-answer > p {
  margin-top: 18px;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.6;
}

.source-line {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--blue);
  font-size: 12px;
}

.source-line strong {
  font-weight: 650;
  text-align: right;
}

.workflow-section {
  color: #f5f2ea;
  background: var(--forest);
}

.workflow-heading {
  max-width: 760px;
}

.eyebrow.light {
  color: #b7ccda;
}

.workflow-heading h2 {
  color: #f8f4eb;
}

.workflow-heading > p:last-child {
  max-width: 560px;
  margin-top: 24px;
  color: rgba(245, 242, 234, 0.72);
  font-size: 17px;
  line-height: 1.78;
}

.workflow-list {
  margin-top: 86px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
}

.workflow-list li {
  min-width: 0;
  padding: 26px 30px 0;
  border-right: 1px solid rgba(255, 255, 255, 0.18);
}

.workflow-list li:first-child {
  padding-left: 0;
}

.workflow-list li:last-child {
  padding-right: 0;
  border-right: 0;
}

.workflow-list span {
  display: block;
  margin-bottom: 48px;
  color: #c6a86f;
  font-family: var(--serif);
  font-size: 16px;
}

.workflow-list strong {
  display: block;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
}

.workflow-list p {
  margin-top: 10px;
  color: rgba(245, 242, 234, 0.68);
  font-size: 13px;
}

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

.roundtable-layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 88px;
  align-items: center;
}

.roundtable-copy > p:not(.eyebrow):not(.roundtable-note) {
  margin-top: 24px;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.8;
}

.provenance-key {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.provenance-key span {
  position: relative;
  padding-left: 18px;
  color: #4b4e49;
  font-size: 13px;
}

.provenance-key span::before {
  position: absolute;
  top: 8px;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  content: "";
}

.key-book::before {
  background: var(--gold);
}

.key-skill::before {
  background: #7b9b76;
}

.roundtable-note {
  margin-top: 28px;
  padding-top: 20px;
  color: var(--burgundy);
  border-top: 1px solid var(--line);
  font-family: var(--serif);
  font-size: 16px;
}

.roundtable-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center top;
}

.memory-section {
  background: var(--surface);
}

.memory-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(480px, 1.14fr);
  gap: 122px;
  align-items: center;
}

.memory-copy > p:not(.eyebrow) {
  margin-top: 25px;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.8;
}

.plain-list {
  margin-top: 30px;
  list-style: none;
}

.plain-list li {
  position: relative;
  padding: 12px 0 12px 24px;
  border-bottom: 1px solid var(--line);
  color: #444743;
  font-size: 14px;
}

.plain-list li::before {
  position: absolute;
  top: 20px;
  left: 2px;
  width: 7px;
  height: 7px;
  background: var(--gold);
  border-radius: 50%;
  content: "";
}

.markdown-sheet {
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  box-shadow: var(--shadow-soft);
}

.markdown-head {
  min-height: 48px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  font-weight: 750;
  text-transform: uppercase;
}

.markdown-head span:last-child {
  color: var(--blue);
  font-weight: 600;
  text-transform: none;
}

.markdown-sheet pre {
  max-height: 550px;
  overflow: auto;
  padding: 30px;
  color: #28322f;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.7;
  white-space: pre-wrap;
}

.privacy-section {
  background: var(--blue-soft);
}

.privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(520px, 1.25fr);
  gap: 122px;
}

.privacy-copy > p {
  color: #454f53;
  font-size: 18px;
  line-height: 1.82;
}

.privacy-boundary {
  margin-top: 38px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid #a9bac4;
  border-bottom: 1px solid #a9bac4;
}

.privacy-boundary > div {
  padding: 24px 28px 24px 0;
}

.privacy-boundary > div + div {
  padding-left: 28px;
  border-left: 1px solid #a9bac4;
}

.privacy-boundary strong {
  display: block;
  color: var(--forest);
  font-family: var(--serif);
  font-size: 18px;
}

.privacy-boundary p {
  margin-top: 8px;
  color: #556268;
  font-size: 13px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
  color: #314d61;
  border-bottom: 1px solid #7890a0;
  font-size: 14px;
  font-weight: 750;
}

.text-link span:last-child {
  transition: transform 180ms ease;
}

.text-link:hover span:last-child {
  transform: translateX(4px);
}

.download-section {
  color: #f5f2ea;
  background: #182925;
}

.download-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 122px;
  align-items: end;
}

.download-copy > img {
  width: 88px;
  height: 88px;
  margin-bottom: 28px;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.24);
}

.download-copy .eyebrow {
  color: #b6cbd8;
}

.download-copy h2 {
  max-width: 680px;
  color: #fbf7ef;
}

.download-copy > p:not(.eyebrow) {
  max-width: 620px;
  margin-top: 24px;
  color: rgba(245, 242, 234, 0.7);
  font-size: 17px;
  line-height: 1.8;
}

.download-actions {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.download-actions .button-primary {
  color: var(--forest);
  background: #f5f0e6;
  border-color: #f5f0e6;
}

.download-actions .button-primary:hover {
  color: #f5f0e6;
  background: transparent;
}

.download-actions span {
  color: rgba(245, 242, 234, 0.58);
  font-size: 12px;
}

.install-note {
  padding: 28px 30px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
}

.install-label {
  color: #d5b77f;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.install-note ol {
  margin-top: 18px;
  padding-left: 20px;
  color: rgba(245, 242, 234, 0.72);
  font-size: 13px;
}

.install-note li {
  padding: 7px 0 7px 8px;
}

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

.faq-layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 122px;
}

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

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

.faq-list summary {
  position: relative;
  padding: 24px 50px 24px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
}

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

.faq-list summary::after {
  position: absolute;
  top: 25px;
  right: 6px;
  color: var(--blue);
  content: "+";
  font-family: var(--sans);
  font-size: 20px;
  font-weight: 400;
  transition: transform 180ms ease;
}

.faq-list details[open] summary::after {
  transform: rotate(45deg);
}

.faq-list details p {
  max-width: 700px;
  padding: 0 60px 25px 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.site-footer {
  padding: 36px 0;
  color: #dad7cf;
  background: #171a18;
}

.footer-layout {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 40px;
  align-items: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand img {
  width: 44px;
  height: 44px;
  border-radius: 8px;
}

.footer-brand strong,
.footer-brand span {
  display: block;
}

.footer-brand strong {
  color: #f7f3eb;
  font-family: var(--latin-serif);
  font-size: 17px;
}

.footer-brand span,
.footer-layout > p {
  color: #8f938d;
  font-size: 11px;
}

.footer-links {
  display: flex;
  gap: 26px;
}

.footer-links a {
  color: #c5c5be;
  font-size: 12px;
}

.footer-links a::after {
  background: #e3e1da;
}

.footer-layout > p {
  text-align: right;
}

.legal-page {
  background: var(--surface);
}

.legal-hero {
  padding: 88px 0 92px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 64px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 700;
}

.legal-back span:first-child {
  transition: transform 180ms ease;
}

.legal-back:hover span:first-child {
  transform: translateX(-4px);
}

.legal-hero h1 {
  max-width: 860px;
  font-family: var(--serif);
  font-size: 66px;
  font-weight: 500;
  line-height: 1.02;
}

.legal-hero > .section-shell > p:not(.eyebrow) {
  max-width: 700px;
  margin-top: 28px;
  color: var(--ink-soft);
  font-size: 18px;
}

.legal-date {
  display: block;
  margin-top: 34px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
}

.legal-body {
  background: var(--surface);
}

.legal-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 760px);
  gap: 100px;
  justify-content: center;
  align-items: start;
}

.legal-toc {
  position: sticky;
  top: 102px;
  display: flex;
  flex-direction: column;
}

.legal-toc strong {
  margin-bottom: 12px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
}

.legal-toc a {
  padding: 9px 0;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.legal-toc a:hover {
  color: var(--blue);
}

.legal-content {
  min-width: 0;
}

.legal-callout {
  padding: 26px 28px;
  background: var(--blue-soft);
  border-left: 3px solid var(--blue);
}

.legal-callout strong {
  display: block;
  font-family: var(--serif);
  font-size: 20px;
}

.legal-callout p {
  margin-top: 8px;
  color: #48565d;
  font-size: 15px;
}

.legal-content > section {
  padding: 68px 0;
  border-bottom: 1px solid var(--line-strong);
  scroll-margin-top: 84px;
}

.legal-number {
  margin-bottom: 14px;
  color: var(--gold);
  font-family: var(--serif);
  font-size: 14px;
}

.legal-content h2 {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 500;
  line-height: 1.14;
}

.legal-content section > p:not(.legal-number):not(.legal-note) {
  margin-top: 22px;
  color: #444844;
  font-size: 16px;
}

.legal-content ul {
  margin-top: 24px;
  list-style: none;
  border-top: 1px solid var(--line);
}

.legal-content li {
  position: relative;
  padding: 14px 0 14px 24px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.legal-content li::before {
  position: absolute;
  top: 23px;
  left: 3px;
  width: 6px;
  height: 6px;
  background: var(--blue);
  border-radius: 50%;
  content: "";
}

.legal-note {
  margin-top: 24px;
  padding: 16px 18px;
  color: var(--burgundy);
  background: #f1e9e5;
  border-left: 2px solid var(--burgundy);
  font-size: 13px;
}

.legal-boundary {
  margin-top: 30px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.legal-boundary > div {
  padding: 24px 26px 24px 0;
}

.legal-boundary > div + div {
  padding-left: 26px;
  border-left: 1px solid var(--line-strong);
}

.legal-boundary strong {
  display: block;
  font-family: var(--serif);
  font-size: 18px;
}

.legal-boundary p {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

.legal-end {
  padding-top: 62px;
}

.legal-end p {
  max-width: 600px;
  font-family: var(--serif);
  font-size: 23px;
  line-height: 1.5;
}

.legal-end .button {
  margin-top: 28px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
}

@media (max-width: 1080px) {
  .hero h1 {
    font-size: 84px;
  }

  .section-heading h2,
  .modes-header h2,
  .principle-statement h2,
  .workflow-heading h2,
  .roundtable-copy h2,
  .memory-copy h2,
  .privacy-layout h2,
  .download-copy h2,
  .faq-layout h2 {
    font-size: 44px;
  }

  .promise-item {
    padding-right: 20px;
    padding-left: 20px;
  }

  .mode-panel {
    grid-template-columns: 270px minmax(0, 1fr);
    gap: 36px;
  }

  .principle-layout,
  .memory-layout {
    gap: 60px;
  }

  .roundtable-layout,
  .download-layout,
  .faq-layout {
    gap: 54px;
  }

  .legal-hero h1 {
    font-size: 56px;
  }

  .legal-layout {
    gap: 60px;
  }
}

@media (max-width: 880px) {
  .site-header,
  .nav-shell {
    height: 64px;
  }

  .nav-shell {
    width: min(100% - 32px, 1180px);
  }

  .menu-toggle {
    position: relative;
    display: block;
  }

  .nav-drawer {
    position: fixed;
    top: 64px;
    right: 0;
    bottom: 0;
    left: 0;
    padding: 40px 24px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 32px;
    visibility: hidden;
    opacity: 0;
    background: var(--paper);
    transform: translateY(-10px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .nav-drawer.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .nav-drawer nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-drawer nav a {
    padding: 17px 0;
    border-bottom: 1px solid var(--line);
    font-family: var(--serif);
    font-size: 25px;
  }

  .nav-drawer nav a::after {
    display: none;
  }

  .nav-actions {
    justify-content: space-between;
  }

  .nav-download {
    min-height: 44px;
    padding: 0 22px;
  }

  .hero {
    height: 82svh;
    min-height: 560px;
  }

  .hero-inner,
  .section-shell {
    width: min(100% - 40px, 760px);
  }

  .hero h1 {
    font-size: 70px;
  }

  .hero-principle {
    font-size: 30px;
  }

  .hero-copy {
    max-width: 560px;
    font-size: 17px;
  }

  .hero-cue {
    right: 20px;
  }

  .promise-strip {
    padding: 0 20px;
    grid-template-columns: 1fr;
  }

  .promise-item,
  .promise-item:first-child,
  .promise-item:last-child {
    padding: 22px 0;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .promise-item:last-child {
    border-bottom: 0;
  }

  .section-pad {
    padding: 104px 0;
  }

  .intro-layout,
  .modes-header,
  .principle-layout,
  .roundtable-layout,
  .memory-layout,
  .privacy-layout,
  .download-layout,
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .intro-copy {
    max-width: 630px;
  }

  .modes-header {
    margin-bottom: 34px;
  }

  .modes-header > p {
    max-width: 560px;
  }

  .mode-panel {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .mode-copy {
    max-width: 590px;
    padding: 0;
  }

  .evidence-demo {
    padding-top: 36px;
    padding-left: 0;
    border-top: 1px solid var(--line-strong);
    border-left: 0;
  }

  .workflow-list {
    grid-template-columns: 1fr 1fr;
  }

  .workflow-list li,
  .workflow-list li:first-child,
  .workflow-list li:last-child {
    padding: 24px 24px 32px;
    border-right: 1px solid rgba(255, 255, 255, 0.18);
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  }

  .workflow-list li:nth-child(2n) {
    border-right: 0;
  }

  .workflow-list li:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .workflow-list span {
    margin-bottom: 24px;
  }

  .roundtable-copy {
    max-width: 630px;
  }

  .privacy-layout {
    gap: 32px;
  }

  .download-layout {
    align-items: start;
  }

  .install-note {
    max-width: 620px;
  }

  .faq-layout {
    gap: 30px;
  }

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

  .footer-layout > p {
    grid-column: 1 / -1;
    text-align: left;
  }

  .legal-hero {
    padding: 70px 0 76px;
  }

  .legal-back {
    margin-bottom: 48px;
  }

  .legal-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .legal-toc {
    position: static;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--line);
  }

  .legal-toc strong {
    grid-column: 1 / -1;
    padding-top: 16px;
  }

  .legal-toc a {
    padding-right: 10px;
  }
}

@media (max-width: 600px) {
  .brand span {
    font-size: 19px;
  }

  .hero {
    height: 82svh;
    min-height: 610px;
    max-height: 720px;
  }

  .hero-inner,
  .section-shell {
    width: calc(100% - 32px);
  }

  .hero-inner {
    padding-bottom: 68px;
  }

  .hero-art img {
    object-position: 64% center;
  }

  .hero-wash {
    background: rgba(244, 241, 233, 0.84);
  }

  .hero h1 {
    font-size: 54px;
  }

  .hero-principle {
    margin-top: 18px;
    font-size: 26px;
  }

  .hero-copy {
    margin-top: 17px;
    font-size: 16px;
  }

  .hero-actions {
    width: 100%;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-cue {
    left: 16px;
    right: auto;
    bottom: 18px;
  }

  .section-pad {
    padding: 84px 0;
  }

  .section-heading h2,
  .modes-header h2,
  .principle-statement h2,
  .workflow-heading h2,
  .roundtable-copy h2,
  .memory-copy h2,
  .privacy-layout h2,
  .download-copy h2,
  .faq-layout h2 {
    font-size: 36px;
  }

  .intro-layout,
  .modes-header,
  .principle-layout,
  .roundtable-layout,
  .memory-layout,
  .privacy-layout,
  .download-layout,
  .faq-layout {
    gap: 40px;
  }

  .intro-copy,
  .principle-statement > p:not(.eyebrow),
  .privacy-copy > p {
    font-size: 16px;
  }

  .mode-controls {
    overflow-x: auto;
    grid-template-columns: repeat(3, minmax(126px, 1fr));
  }

  .mode-tab {
    min-height: 62px;
    padding: 0 16px;
  }

  .mode-panel {
    padding-top: 34px;
  }

  .mode-copy h3 {
    font-size: 30px;
  }

  .product-frame figcaption {
    display: none;
  }

  .principle-statement blockquote {
    font-size: 20px;
  }

  .evidence-step {
    padding-left: 50px;
  }

  .evidence-answer {
    padding: 20px;
  }

  .evidence-answer > p {
    font-size: 16px;
  }

  .source-line {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .source-line strong {
    text-align: left;
  }

  .workflow-list {
    grid-template-columns: 1fr;
  }

  .workflow-list li,
  .workflow-list li:first-child,
  .workflow-list li:last-child,
  .workflow-list li:nth-child(2n),
  .workflow-list li:nth-last-child(-n + 2) {
    padding: 24px 0 28px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  }

  .workflow-list li:last-child {
    border-bottom: 0;
  }

  .markdown-sheet pre {
    padding: 22px 18px;
    font-size: 11px;
  }

  .privacy-boundary {
    grid-template-columns: 1fr;
  }

  .privacy-boundary > div,
  .privacy-boundary > div + div {
    padding: 20px 0;
    border-left: 0;
  }

  .privacy-boundary > div + div {
    border-top: 1px solid #a9bac4;
  }

  .download-copy > img {
    width: 72px;
    height: 72px;
  }

  .download-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .install-note {
    padding: 24px 20px;
  }

  .faq-list summary {
    padding-right: 38px;
    font-size: 17px;
  }

  .faq-list details p {
    padding-right: 20px;
  }

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

  .footer-links {
    flex-wrap: wrap;
  }

  .footer-layout > p {
    grid-column: auto;
  }

  .legal-hero {
    padding: 52px 0 62px;
  }

  .legal-back {
    margin-bottom: 38px;
  }

  .legal-hero h1 {
    font-size: 43px;
  }

  .legal-hero > .section-shell > p:not(.eyebrow) {
    font-size: 16px;
  }

  .legal-toc {
    grid-template-columns: 1fr 1fr;
  }

  .legal-content > section {
    padding: 52px 0;
  }

  .legal-content h2 {
    font-size: 31px;
  }

  .legal-boundary {
    grid-template-columns: 1fr;
  }

  .legal-boundary > div,
  .legal-boundary > div + div {
    padding: 20px 0;
    border-left: 0;
  }

  .legal-boundary > div + div {
    border-top: 1px solid var(--line-strong);
  }

  .legal-end p {
    font-size: 20px;
  }
}

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

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

  .reveal {
    opacity: 1;
    transform: none;
  }
}