:root {
  --paper: #f5f4ed;
  --card: #fdfcf8;
  --ink: #262620;
  --muted: #626357;
  --line: #dcdcd0;
  --accent: #a2442c;
  --sage: #e7eadd;
  --green: #354d3c;
  --serif: Georgia, 'Times New Roman', serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 17px;
  line-height: 1.7;
}
[hidden] {
  display: none !important;
}
::selection {
  background: #dfdca6;
}
a {
  color: inherit;
  text-underline-offset: 4px;
}
a:hover {
  color: var(--accent);
}
button,
input {
  font: inherit;
}
button,
summary,
a,
input {
  -webkit-tap-highlight-color: transparent;
}
button,
summary {
  cursor: pointer;
}
button,
.button {
  min-height: 46px;
}
:focus-visible {
  outline: 3px solid #3568a0;
  outline-offset: 5px;
}
p {
  margin: 0 0 1em;
}
h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 400;
  margin: 0;
}
h1 {
  font-size: clamp(46px, 5.3vw, 77px);
  line-height: 1.06;
  letter-spacing: -3px;
}
h2 {
  font-size: clamp(34px, 3.8vw, 52px);
  line-height: 1.12;
  letter-spacing: -1.7px;
}
h3 {
  font-size: 29px;
  line-height: 1.2;
  letter-spacing: -0.6px;
}
.wrap {
  width: min(1180px, calc(100% - 80px));
  margin-inline: auto;
}
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 100px;
  border-bottom: 1px solid var(--line);
  gap: 20px;
}
.wordmark {
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.8px;
  text-decoration: none;
  white-space: nowrap;
}
.wordmark > span:not(.back-label) {
  color: var(--accent);
}
.back-label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 400;
  letter-spacing: 0;
  margin-left: 20px;
}
.header-link {
  font-size: 14px;
  text-decoration: none;
  padding: 10px 0;
}
.header-link span {
  margin-left: 10px;
}
.hero {
  display: grid;
  grid-template-columns: 1.08fr 1fr;
  align-items: center;
  min-height: 630px;
  gap: 20px;
  padding-block: 64px 60px;
}
.eyebrow {
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 1.7px;
  margin-bottom: 24px;
}
.dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 8px;
}
.lead {
  font-size: 19px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 450px;
  margin-top: 28px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 24px;
  align-items: center;
  margin-top: 32px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  border-radius: 6px;
  padding: 14px 22px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 550;
}
.primary {
  background: var(--accent);
  color: #fffdf5;
}
.primary:hover {
  background: #853721;
  color: white;
}
.text-link {
  font-size: 13px;
}
.small {
  font-size: 13px;
  color: var(--muted);
}
.hero-note {
  margin-top: 24px;
}
.hero-art {
  margin: 0;
}
.hero-art img {
  display: block;
  width: 100%;
  height: auto;
}
.hero-art figcaption {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin-top: 16px;
}
.route-nav {
  position: sticky;
  top: 0;
  background: #f5f4edf5;
  backdrop-filter: blur(10px);
  border-block: 1px solid var(--line);
  z-index: 5;
}
.route-nav nav {
  display: flex;
  gap: 34px;
  min-height: 65px;
  align-items: center;
  flex-wrap: wrap;
}
.route-nav a {
  text-decoration: none;
  font-size: 13px;
  padding: 12px 0;
}
.intro-note {
  max-width: 860px;
  padding-block: 65px;
  font-size: 18px;
}
.intro-note .eyebrow {
  color: var(--accent);
}
.intro-note p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 16px;
}
.section {
  padding-block: 80px;
}
.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 60px;
  margin-bottom: 42px;
}
.section-heading > p {
  max-width: 370px;
  font-size: 16px;
  color: var(--muted);
  margin: 0 0 4px;
}
.stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stack-card {
  border: 1px solid var(--line);
  padding: 26px;
  border-radius: 9px;
  background: var(--card);
  display: flex;
  flex-direction: column;
  align-items: start;
}
.tool-symbol {
  font-size: 34px;
  line-height: 1;
  height: 47px;
  margin-bottom: 24px;
}
.claude {
  color: var(--accent);
  font-size: 42px;
}
.vault {
  color: var(--green);
}
.cloud {
  color: #8d5930;
}
.tag {
  display: inline-block;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.15px;
}
.stack-card h3 {
  font-size: 25px;
  margin-block: 9px 14px;
}
.stack-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.75;
  flex: 1;
}
.stack-card a {
  font-size: 13px;
  text-decoration: none;
  border-top: 1px solid var(--line);
  width: 100%;
  padding-top: 16px;
  margin-top: 5px;
}
.stack-card a span {
  float: right;
}
.quiet-note {
  color: var(--muted);
  font-size: 13px;
  max-width: 850px;
  margin: 22px 0 0;
}
.steps-section {
  background: #ebede3;
  border-block: 1px solid var(--line);
}
.steps-layout {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: 70px;
  align-items: start;
}
.steps-aside {
  position: sticky;
  top: 115px;
}
.steps-aside h2 {
  margin-bottom: 28px;
}
.steps-aside > p:not(.eyebrow) {
  color: var(--muted);
  font-size: 15px;
}
.progress-box {
  border-top: 1px solid #cdd1c0;
  margin-top: 28px;
  padding-top: 24px;
}
.progress-box label {
  display: block;
  font-size: 13px;
  font-weight: 600;
}
progress {
  display: block;
  accent-color: var(--green);
  height: 7px;
  border: 0;
  width: 100%;
  margin-top: 12px;
  border-radius: 5px;
  background: #d3d8c6;
}
progress::-webkit-progress-bar {
  background: #d3d8c6;
  border-radius: 5px;
}
progress::-webkit-progress-value {
  background: var(--green);
  border-radius: 5px;
}
#progress-label {
  margin: 9px 0;
  font-size: 12px;
}
.step {
  background: var(--card);
  border: 1px solid #d5d9ca;
  border-radius: 8px;
  margin-bottom: 12px;
  scroll-margin-top: 95px;
}
.step > summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 25px;
}
.step > summary::-webkit-details-marker {
  display: none;
}
.step-number {
  color: var(--accent);
  font-family: var(--serif);
  font-size: 26px;
  align-self: start;
  line-height: 1.25;
}
.step summary strong {
  display: block;
  font-size: 18px;
  font-weight: 550;
  line-height: 1.4;
}
.step summary small {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-top: 5px;
  font-weight: 400;
}
.expand {
  margin-left: auto;
  font-size: 25px;
  color: var(--muted);
  font-weight: 300;
}
.step[open] > summary .expand {
  transform: rotate(45deg);
}
.step-body {
  padding: 0 26px 28px 72px;
  font-size: 15px;
}
.step-body ol,
.numbered {
  padding-left: 22px;
}
li {
  margin-bottom: 12px;
  padding-left: 5px;
}
.complete {
  display: flex;
  gap: 12px;
  align-items: center;
  padding-block: 18px;
  border-top: 1px solid var(--line);
  margin-top: 24px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}
.complete input {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  accent-color: var(--green);
}
.next-link {
  font-size: 13px;
}
.comparison {
  border-left: 2px solid #bac1a6;
  padding-left: 20px;
  margin-block: 24px;
}
.comparison div:first-child {
  color: var(--muted);
}
.mini-label {
  font-size: 10px;
  letter-spacing: 1.2px;
  font-weight: 650;
}
.comparison p {
  margin-top: 5px;
}
.callout {
  background: #eeeede;
  border-radius: 5px;
  padding: 17px 19px;
  margin-block: 22px;
  font-size: 14px;
}
.callout p {
  margin: 5px 0 0;
}
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: #e9e9df;
  padding: 2px 5px;
  border-radius: 3px;
  overflow-wrap: anywhere;
}
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 13px;
  line-height: 1.9;
}
.prompt-box {
  border: 1px solid #cdd0bf;
  border-radius: 6px;
  overflow: hidden;
  margin: 20px 0;
  background: #f8f8f0;
}
.prompt-box pre {
  margin: 0;
  padding: 22px;
}
.prompt-box button {
  width: 100%;
  text-align: left;
  background: #e4e7d7;
  color: #344632;
  border: 0;
  border-top: 1px solid #cdd0bf;
  padding: 13px 22px;
  font-size: 13px;
}
.prompt-box button:hover {
  background: #d7ddc6;
}
.prompt-box button:focus-visible {
  outline-offset: -4px;
}
blockquote {
  font-family: var(--serif);
  font-style: italic;
  font-size: 21px;
  margin: 24px 0;
  border-left: 2px solid var(--accent);
  padding-left: 20px;
}
.subdetail {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 14px 18px;
  margin-bottom: 12px;
}
.subdetail summary {
  font-weight: 550;
}
.subdetail[open] summary {
  margin-bottom: 16px;
}
.book {
  border: 1px solid #d7d9c8;
  border-radius: 10px;
  background: #fdfcf7;
  overflow: hidden;
}
.book-page {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  min-height: 390px;
}
.book-picture {
  background: #e8ead9;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  padding: 35px;
  position: relative;
}
.book-picture::before {
  content: '';
  position: absolute;
  width: 185px;
  height: 185px;
  border: 1px solid #a4ae91;
  border-radius: 50%;
}
.book-glyph {
  font-family: var(--serif);
  font-size: 100px;
  line-height: 1.8;
  color: var(--green);
  transform: rotate(-8deg);
}
.picture-caption {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--green);
  position: absolute;
  bottom: 30px;
}
.book-copy {
  padding: 42px 48px 32px;
}
.book-copy .eyebrow {
  color: var(--muted);
  font-size: 10px;
  margin-bottom: 18px;
}
.book-copy h3 {
  font-size: 34px;
  margin-bottom: 22px;
}
.book-copy p:not(.eyebrow) {
  font-size: 15px;
  color: #535649;
}
.book-controls {
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: center;
  gap: 26px;
  align-items: center;
  padding: 12px;
}
.book-controls button {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 50%;
  width: 46px;
  font-size: 20px;
  color: var(--ink);
}
.book-controls button:disabled {
  opacity: 0.35;
  cursor: default;
}
#book-position {
  min-width: 55px;
  text-align: center;
  font-size: 13px;
}
.folders-section {
  background: #e9ecdf;
}
.folder-layout {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 65px;
  margin-top: 46px;
}
.folder-map {
  min-width: 0;
}
.folder-row {
  display: flex;
  align-items: center;
  gap: 17px;
  background: #fbfcf5;
  border: 1px solid #ccd2bd;
  border-radius: 7px;
  padding: 21px;
}
.folder-row > span:first-child {
  color: var(--green);
  font-size: 28px;
}
.folder-row strong {
  font-size: 15px;
}
.folder-row small {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-top: 3px;
  overflow-wrap: anywhere;
}
.folder-row .tag {
  margin-left: auto;
  white-space: nowrap;
  font-size: 10px;
}
.folder-caption {
  margin: 12px 0 0;
  font-size: 12px;
  color: var(--muted);
}
.folder-branches {
  border-left: 1px dashed #9ca88b;
  margin: 24px 0 24px 23px;
  padding-left: 27px;
  display: grid;
  gap: 16px;
}
.vault-strip {
  display: flex;
  align-items: center;
  gap: 17px;
  padding: 18px 22px;
  border-radius: 6px;
  background: #dfe5d2;
}
.vault-strip > span {
  font-size: 28px;
}
.vault-strip p {
  margin: 0;
  font-size: 13px;
}
.folder-explanation h3 {
  margin-bottom: 25px;
}
.folder-explanation ol {
  padding-left: 19px;
  font-size: 15px;
}
.folder-explanation > p {
  font-size: 14px;
  color: var(--muted);
}
.wide-detail {
  border-block: 1px solid #cdd2bd;
  padding: 21px 0;
  margin-top: 32px;
  font-size: 15px;
}
.wide-detail > summary {
  font-size: 16px;
  font-weight: 550;
  padding-block: 6px;
}
.wide-detail[open] > summary {
  margin-bottom: 26px;
}
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.detail-grid h3 {
  font-size: 23px;
}
.file-example {
  padding: 18px;
  background: #f8f9f1;
  border: 1px solid #d4d8c7;
  border-radius: 5px;
}
.starter-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 38px;
  padding-block: 38px 20px;
}
.starter-banner h3 {
  margin: 10px 0 14px;
}
.starter-banner p {
  font-size: 14px;
  color: var(--muted);
  max-width: 650px;
  margin: 0;
}
.starter-banner .button {
  white-space: nowrap;
}
.access-path {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-block: 1px solid var(--line);
  gap: 55px;
  padding-block: 30px;
}
.access-path h3 {
  margin-block: 12px 20px;
}
.access-path p {
  font-size: 15px;
  color: var(--muted);
}
.safety-note {
  font-size: 14px;
  margin-top: 24px;
  padding: 22px;
  background: #ede5dc;
  border-left: 3px solid #b2744b;
}
.alternatives {
  border-top: 1px solid var(--line);
}
.alternative-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px 60px;
}
.alternative-list article {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.alternative-list h3 {
  font-size: 26px;
  margin-bottom: 15px;
}
.alternative-list p {
  font-size: 15px;
  color: var(--muted);
}
.alternative-list a {
  font-size: 13px;
}
.alternative-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}
.contact-section {
  background: #344737;
  color: #f8f7ed;
  padding-block: 70px;
}
.contact-inner {
  display: flex;
  gap: 60px;
  align-items: center;
  justify-content: space-between;
}
.contact-inner .eyebrow {
  color: #d0d6c7;
}
.contact-inner p:not(.eyebrow) {
  max-width: 540px;
  margin-top: 25px;
  color: #e0e4d9;
  font-size: 16px;
}
.light {
  background: #f5f4ed;
  color: #273f2c;
  white-space: nowrap;
}
footer {
  padding-block: 40px 30px;
}
.footer-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 35px;
}
.footer-main p {
  font-size: 11px;
  color: var(--muted);
  margin: 0;
}
.footer-main > a:last-child {
  font-size: 12px;
  white-space: nowrap;
}
.sources {
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  margin-top: 30px;
  padding-top: 20px;
}
.sources > summary {
  padding: 10px 0;
}
.sources p {
  max-width: 850px;
}
.sr-only,
.skip:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip:focus {
  position: fixed;
  top: 10px;
  left: 10px;
  background: white;
  color: black;
  z-index: 20;
  padding: 12px;
}
@media (min-width: 1350px) {
  .hero-art {
    margin-right: -30px;
  }
}
@media (max-width: 1000px) {
  .wrap {
    width: calc(100% - 48px);
  }
  .hero {
    gap: 0;
  }
  h1 {
    font-size: 58px;
  }
  .stack-grid {
    grid-template-columns: 1fr 1fr;
  }
  .steps-layout {
    grid-template-columns: 235px minmax(0, 1fr);
    gap: 35px;
  }
  .section-heading {
    gap: 40px;
  }
  .section-heading > p {
    max-width: 300px;
  }
  .folder-layout {
    gap: 35px;
  }
  .folder-row {
    padding: 16px;
  }
  .folder-row .tag {
    display: none;
  }
  .book-copy {
    padding: 34px;
  }
}
@media (max-width: 740px) {
  html {
    scroll-padding-top: 20px;
  }
  .wrap {
    width: calc(100% - 40px);
  }
  .site-header {
    min-height: 77px;
  }
  .back-label {
    display: none;
  }
  .wordmark {
    font-size: 20px;
  }
  .header-link {
    font-size: 12px;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-block: 43px 32px;
  }
  h1 {
    font-size: clamp(44px, 9.5vw, 62px);
    letter-spacing: -2px;
  }
  .hero .eyebrow {
    margin-bottom: 20px;
  }
  .lead {
    font-size: 17px;
    max-width: 500px;
    margin-top: 23px;
  }
  .hero-actions {
    gap: 20px;
    margin-top: 25px;
  }
  .hero-note {
    font-size: 11px;
  }
  .hero-art {
    margin: 5px auto 0;
    width: min(100%, 490px);
  }
  .hero-art figcaption {
    font-size: 11px;
  }
  .route-nav {
    position: static;
  }
  .route-nav nav {
    gap: 0 22px;
    padding-block: 12px;
  }
  .route-nav a {
    font-size: 12px;
    padding-block: 7px;
  }
  .intro-note {
    padding-block: 43px 20px;
    font-size: 16px;
  }
  .intro-note p:last-child {
    font-size: 14px;
  }
  .section {
    padding-block: 50px;
  }
  .section-heading {
    display: block;
    margin-bottom: 28px;
  }
  .section-heading > p {
    max-width: 100%;
    margin-top: 22px;
    font-size: 15px;
  }
  .section-heading .eyebrow {
    margin-bottom: 20px;
  }
  .stack-grid {
    gap: 12px;
  }
  .stack-card {
    padding: 18px;
  }
  .stack-card h3 {
    font-size: 24px;
  }
  .stack-card p {
    font-size: 13px;
  }
  .tool-symbol {
    margin-bottom: 14px;
  }
  .stack-card .tag {
    font-size: 10px;
  }
  .quiet-note {
    font-size: 12px;
  }
  .steps-layout {
    display: block;
  }
  .steps-aside {
    position: static;
    margin-bottom: 32px;
  }
  .steps-aside h2 br {
    display: none;
  }
  .progress-box {
    max-width: 450px;
  }
  .step {
    scroll-margin-top: 20px;
  }
  .step > summary {
    gap: 14px;
    padding: 20px 18px;
  }
  .step summary strong {
    font-size: 16px;
  }
  .step summary small {
    font-size: 12px;
  }
  .step-body {
    padding: 0 18px 24px;
    font-size: 14px;
  }
  .book-page {
    grid-template-columns: 1fr;
  }
  .book-picture {
    min-height: 170px;
    padding: 20px;
  }
  .book-picture::before {
    height: 100px;
    width: 100px;
    top: 18px;
  }
  .book-glyph {
    font-size: 58px;
    line-height: 1.5;
    margin-top: -25px;
  }
  .picture-caption {
    bottom: 17px;
    font-size: 9px;
  }
  .book-copy {
    padding: 28px 25px;
  }
  .book-copy h3 {
    font-size: 29px;
  }
  .book-copy p:not(.eyebrow) {
    font-size: 14px;
  }
  .folder-layout {
    grid-template-columns: 1fr;
    gap: 32px;
    margin-top: 28px;
  }
  .folder-explanation h3 {
    font-size: 25px;
  }
  .detail-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .starter-banner {
    flex-direction: column;
    align-items: start;
    gap: 24px;
  }
  .access-path {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .access-path article + article {
    border-top: 1px solid var(--line);
    padding-top: 25px;
  }
  .access-path h3 {
    font-size: 26px;
  }
  .alternative-list {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .contact-inner {
    flex-direction: column;
    align-items: start;
    gap: 14px;
  }
  .contact-section {
    padding-block: 45px;
  }
  .footer-main {
    flex-wrap: wrap;
    gap: 22px;
  }
  .footer-main p {
    order: 3;
    width: 100%;
  }
  .footer-main > a:last-child {
    margin-left: auto;
  }
}
@media (max-width: 370px) {
  .wrap {
    width: calc(100% - 32px);
  }
  .stack-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    align-items: start;
    flex-direction: column;
  }
  .folder-branches {
    margin-left: 10px;
    padding-left: 16px;
  }
  .folder-row {
    gap: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
@media print {
  .route-nav,
  .book-controls,
  [data-copy],
  .site-header,
  .contact-section,
  .next-link,
  .complete {
    display: none !important;
  }
  .wrap {
    width: 100%;
  }
  body {
    font-size: 12pt;
    background: white;
  }
  .steps-layout,
  .folder-layout,
  .hero {
    display: block;
  }
  .steps-aside {
    position: static;
  }
}