:root {
  --paper: #f4f0e7;
  --paper-deep: #e9e2d4;
  --ink: #1c2622;
  --muted: #606963;
  --forest: #173f35;
  --forest-soft: #285c4e;
  --lime: #c7e36f;
  --coral: #e46f51;
  --line: rgba(28, 38, 34, 0.19);
  --white: #fffdf8;
  --shadow: 0 24px 60px rgba(29, 40, 35, 0.12);
  --serif: Iowan Old Style, Baskerville, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --content: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.025'/%3E%3C/svg%3E");
  content: "";
  pointer-events: none;
}

a {
  color: inherit;
}

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

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  background: var(--ink);
  color: white;
  font-weight: 700;
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid transparent;
  background: rgba(244, 240, 231, 0.9);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.site-header[data-scrolled] {
  border-color: var(--line);
  box-shadow: 0 8px 30px rgba(28, 38, 34, 0.06);
}

.header-inner {
  display: flex;
  width: min(calc(100% - 3rem), var(--content));
  min-height: 5.4rem;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.65rem;
  height: 2.65rem;
  border: 1px solid var(--ink);
  place-items: center;
  background: var(--lime);
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  transform: rotate(-3deg);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.brand-context {
  margin-top: 0.25rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 0.8rem;
  font-style: italic;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.primary-nav a {
  position: relative;
  color: #34433d;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
}

.primary-nav a::after {
  position: absolute;
  right: 0;
  bottom: -0.4rem;
  left: 0;
  height: 2px;
  background: var(--coral);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 160ms ease;
}

.primary-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-button {
  display: none;
}

.hero {
  width: min(calc(100% - 3rem), var(--content));
  margin: 0 auto;
  padding: clamp(4.5rem, 9vw, 8.5rem) 0 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(19rem, 0.66fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 8rem);
}

.eyebrow {
  margin: 0 0 1.2rem;
  color: var(--forest-soft);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 850px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.4rem, 7.4vw, 7rem);
  font-weight: 400;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.hero h1 em {
  position: relative;
  display: inline-block;
  color: var(--forest);
  font-weight: 400;
}

.hero h1 em::after {
  position: absolute;
  right: -0.06em;
  bottom: -0.1em;
  left: 0;
  height: 0.16em;
  background: var(--lime);
  content: "";
  transform: rotate(-1deg);
  z-index: -1;
}

.hero-lede {
  max-width: 690px;
  margin: 2.2rem 0 0;
  color: #45524c;
  font-size: clamp(1.05rem, 1.65vw, 1.28rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  margin-top: 2.25rem;
  align-items: center;
  gap: 1.6rem;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  min-height: 3.3rem;
  padding: 0.8rem 1.2rem;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  border: 1px solid var(--ink);
  font-size: 0.86rem;
  font-weight: 800;
  text-decoration: none;
  transition: box-shadow 160ms ease, transform 160ms ease;
}

.button:hover {
  box-shadow: 5px 5px 0 var(--lime);
  transform: translate(-2px, -2px);
}

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

.button-primary span {
  color: var(--lime);
  font-size: 1.1rem;
}

.text-link {
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--ink);
  font-size: 0.86rem;
  font-weight: 800;
  text-decoration: none;
}

.text-link span {
  display: inline-block;
  margin-left: 0.35rem;
  transition: transform 160ms ease;
}

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

.field-note {
  position: relative;
  padding: 2.75rem 2.2rem 2.2rem;
  border: 1px solid rgba(28, 38, 34, 0.2);
  background: #fffcf3;
  box-shadow: var(--shadow);
  transform: rotate(1.4deg);
}

.field-note::after {
  position: absolute;
  right: 1rem;
  bottom: 0.8rem;
  width: 2.8rem;
  height: 2.8rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  content: "";
}

.tape {
  position: absolute;
  top: -0.85rem;
  left: 50%;
  width: 7rem;
  height: 1.8rem;
  background: rgba(199, 227, 111, 0.64);
  transform: translateX(-50%) rotate(-2deg);
}

.field-note-label {
  margin: 0 0 1.3rem;
  color: var(--coral);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.field-note-quote {
  margin: 0 0 1.2rem;
  font-family: var(--serif);
  font-size: clamp(1.55rem, 2.4vw, 2.05rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.field-note > p:not([class]) {
  color: #536059;
  font-size: 0.92rem;
  line-height: 1.65;
}

.field-note-signoff {
  display: block;
  margin-top: 1.25rem;
  font-family: var(--serif);
  font-style: italic;
}

.hero-rule {
  display: flex;
  margin-top: clamp(4rem, 8vw, 7.5rem);
  padding: 0.65rem 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section {
  width: min(calc(100% - 3rem), var(--content));
  margin: 0 auto;
  padding: clamp(5.5rem, 9vw, 9rem) 0;
}

.section-heading {
  max-width: 720px;
}

.section-heading h2,
.loop-intro h2,
.welcome-callout h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.5rem, 5vw, 4.6rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.section-heading > p:last-child {
  max-width: 610px;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.start-list {
  margin: 3.8rem 0 0;
  padding: 0;
  border-top: 1px solid var(--ink);
  list-style: none;
}

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

.start-list a {
  display: grid;
  min-height: 9rem;
  padding: 1.5rem 0;
  grid-template-columns: 5rem minmax(0, 1fr) 3rem;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  transition: padding 180ms ease, background 180ms ease;
}

.start-list a:hover {
  padding-right: 1.2rem;
  padding-left: 1.2rem;
  background: rgba(255, 253, 248, 0.65);
}

.step-number {
  color: var(--coral);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 800;
}

.step-copy {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.step-copy strong {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  font-weight: 400;
  letter-spacing: -0.025em;
}

.step-copy > span {
  color: var(--muted);
}

.step-arrow,
.round-arrow {
  display: grid;
  border: 1px solid var(--ink);
  border-radius: 50%;
  place-items: center;
}

.step-arrow {
  width: 2.7rem;
  height: 2.7rem;
  font-size: 1rem;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.start-list a:hover .step-arrow {
  background: var(--forest);
  color: white;
  transform: rotate(45deg);
}

.guides-section {
  padding-top: 2rem;
}

.section-heading-row {
  display: grid;
  max-width: none;
  grid-template-columns: minmax(0, 1.45fr) minmax(17rem, 0.55fr);
  align-items: end;
  gap: 4rem;
}

.section-heading-row > p:last-child {
  margin: 0 0 0.35rem;
}

.guide-grid {
  display: grid;
  margin-top: 4rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.guide-card {
  min-height: 25rem;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: rgba(255, 253, 248, 0.3);
}

.guide-card:nth-child(2),
.guide-card:nth-child(6) {
  background: rgba(199, 227, 111, 0.18);
}

.guide-card:nth-child(4) {
  background: rgba(228, 111, 81, 0.08);
}

.guide-card > a {
  display: flex;
  height: 100%;
  padding: 1.6rem;
  flex-direction: column;
  text-decoration: none;
  transition: background 180ms ease, color 180ms ease;
}

.guide-card > a:hover {
  background: var(--forest);
  color: white;
}

.card-topline {
  display: flex;
  padding-bottom: 1rem;
  border-bottom: 1px solid currentColor;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card-topline span:first-child {
  color: var(--coral);
}

.guide-card > a:hover .card-topline span:first-child {
  color: var(--lime);
}

.guide-card h3 {
  margin: 2.2rem 0 1rem;
  font-family: var(--serif);
  font-size: clamp(1.75rem, 2.7vw, 2.45rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.guide-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.guide-card > a:hover p {
  color: rgba(255, 255, 255, 0.72);
}

.card-footer {
  display: flex;
  margin-top: auto;
  padding-top: 2rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.76rem;
  font-weight: 800;
}

.round-arrow {
  width: 2.5rem;
  height: 2.5rem;
  transition: transform 180ms ease;
}

.guide-card > a:hover .round-arrow {
  border-color: var(--lime);
  color: var(--lime);
  transform: rotate(45deg);
}

.loop-section {
  background: var(--forest);
  color: white;
}

.loop-inner {
  width: min(calc(100% - 3rem), var(--content));
  margin: 0 auto;
  padding: clamp(5.5rem, 9vw, 9rem) 0;
}

.eyebrow-light {
  color: var(--lime);
}

.loop-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(16rem, 0.5fr);
  gap: 1rem 4rem;
}

.loop-intro .eyebrow {
  grid-column: 1 / -1;
}

.loop-intro > p:last-child {
  margin: 0.8rem 0 0;
  align-self: end;
  color: rgba(255, 255, 255, 0.7);
}

.loop-track {
  display: grid;
  margin: 5rem 0 0;
  padding: 0;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.45);
  list-style: none;
}

.loop-track li {
  position: relative;
  display: flex;
  min-height: 13rem;
  padding: 1.4rem 1.4rem 1.4rem 0;
  border-right: 1px solid rgba(255, 255, 255, 0.2);
  flex-direction: column;
}

.loop-track li:last-child {
  border-right: 0;
  padding-left: 1.4rem;
}

.loop-track li:not(:first-child):not(:last-child) {
  padding-left: 1.4rem;
}

.loop-track li::before {
  position: absolute;
  top: -0.38rem;
  left: -0.35rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--lime);
  content: "";
}

.loop-number {
  color: var(--lime);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.loop-track strong {
  margin-top: 2rem;
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 400;
}

.loop-track li > span:last-child {
  max-width: 13rem;
  margin-top: 0.5rem;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.85rem;
}

.loop-return {
  margin: 1rem 0 0;
  color: var(--lime);
  font-family: var(--serif);
  font-size: 1.1rem;
  font-style: italic;
  text-align: right;
}

.principles-layout {
  display: grid;
  margin-top: 4rem;
  grid-template-columns: minmax(18rem, 0.75fr) minmax(0, 1.25fr);
  border-top: 1px solid var(--ink);
  gap: 4rem;
}

.principle-statement {
  padding-top: 2rem;
}

.principle-statement p {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.55rem, 2.8vw, 2.35rem);
  letter-spacing: -0.025em;
  line-height: 1.22;
}

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

.principle-list li {
  display: grid;
  padding: 2rem 0;
  grid-template-columns: 3.5rem 1fr;
  border-bottom: 1px solid var(--line);
}

.principle-list > li > span {
  color: var(--coral);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 800;
}

.principle-list strong {
  display: block;
  font-size: 1rem;
}

.principle-list p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.welcome-callout {
  display: grid;
  margin-top: clamp(5rem, 10vw, 9rem);
  padding: clamp(2rem, 5vw, 4.5rem);
  grid-template-columns: minmax(0, 1.2fr) minmax(17rem, 0.6fr);
  align-items: end;
  gap: 4rem;
  background: var(--lime);
}

.welcome-callout h2 {
  font-size: clamp(2.2rem, 4vw, 3.8rem);
}

.welcome-callout > p {
  margin: 0 0 0.4rem;
  color: #35453d;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  background: var(--ink);
  color: white;
}

.footer-inner {
  display: grid;
  width: min(calc(100% - 3rem), var(--content));
  min-height: 16rem;
  margin: 0 auto;
  padding: 3rem 0;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  gap: 3rem;
}

.footer-brand {
  font-family: var(--serif);
  font-size: 1.45rem;
  text-decoration: none;
}

.footer-inner p {
  max-width: 28rem;
  margin: 0.65rem 0 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.78rem;
}

.footer-meta {
  text-align: right;
}

.footer-meta p {
  margin-left: auto;
}

.guide-hero {
  padding: 3rem 0 clamp(4rem, 8vw, 7rem);
  border-bottom: 1px solid var(--ink);
}

.guide-hero-inner,
.guide-body {
  width: min(calc(100% - 3rem), var(--content));
  margin: 0 auto;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.breadcrumbs a {
  text-decoration: none;
}

.breadcrumbs a:hover {
  text-decoration: underline;
  text-underline-offset: 0.25rem;
}

.guide-title-row {
  display: grid;
  margin-top: clamp(4rem, 8vw, 7rem);
  grid-template-columns: minmax(0, 1fr) 10.5rem;
  align-items: end;
  gap: 3rem;
}

.guide-title-row h1 {
  max-width: 850px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.3rem, 7vw, 6.7rem);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 0.94;
}

.guide-summary {
  max-width: 700px;
  margin: 2rem 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
}

.guide-stamp {
  display: flex;
  aspect-ratio: 1;
  padding: 1rem;
  border: 1px solid var(--coral);
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: var(--coral);
  text-align: center;
  transform: rotate(7deg);
}

.guide-stamp span {
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.guide-stamp strong {
  max-width: 6rem;
  margin-top: 0.3rem;
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.1;
}

.guide-body {
  display: grid;
  padding: clamp(4rem, 8vw, 7rem) 0;
  grid-template-columns: 16rem minmax(0, 1fr);
  align-items: start;
  gap: clamp(3rem, 8vw, 8rem);
}

.guide-aside {
  position: sticky;
  top: 7.5rem;
}

.aside-label {
  margin: 0 0 1.2rem;
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.guide-aside ol {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.guide-aside li {
  border-bottom: 1px solid var(--line);
}

.guide-aside li a {
  display: block;
  padding: 0.75rem 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.35;
  text-decoration: none;
}

.guide-aside li a:hover {
  color: var(--coral);
}

.back-link {
  display: inline-block;
  margin-top: 1.5rem;
  font-size: 0.75rem;
  font-weight: 800;
  text-decoration: none;
}

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

.draft-notice {
  display: grid;
  padding: 2rem;
  grid-template-columns: 2.7rem 1fr;
  gap: 1.3rem;
  background: var(--lime);
}

.notice-mark {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--ink);
  border-radius: 50%;
  place-items: center;
}

.draft-notice h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.7rem;
  font-weight: 400;
  letter-spacing: -0.02em;
}

.draft-notice p {
  margin: 0.65rem 0 0;
  color: #384940;
}

.guide-outcome {
  margin: 4rem 0;
  padding: 0 0 2.5rem 2rem;
  border-bottom: 1px solid var(--ink);
  border-left: 4px solid var(--coral);
}

.guide-outcome p:last-child {
  max-width: 700px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.6vw, 3rem);
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.outline-section > h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.3rem, 4vw, 3.6rem);
  font-weight: 400;
  letter-spacing: -0.04em;
}

.outline-list {
  margin-top: 2.5rem;
  border-top: 1px solid var(--ink);
}

.outline-list article {
  display: grid;
  padding: 2rem 0;
  grid-template-columns: 4rem 1fr;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 7rem;
}

.outline-list article > span {
  color: var(--coral);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
}

.outline-list h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.025em;
}

.outline-list p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.next-guide {
  display: flex;
  margin-top: 5rem;
  padding: 2rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  background: var(--forest);
  color: white;
}

.next-guide > span {
  color: var(--lime);
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.next-guide a {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--serif);
  font-size: 1.4rem;
  text-align: right;
  text-decoration: none;
}

.next-guide a span {
  color: var(--lime);
}

.error-page {
  width: min(calc(100% - 3rem), 780px);
  min-height: 70vh;
  margin: 0 auto;
  padding: clamp(6rem, 13vw, 12rem) 0;
}

.error-page h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.95;
}

.error-page > p:not(.eyebrow) {
  max-width: 500px;
  margin: 1.8rem 0 2rem;
  color: var(--muted);
  font-size: 1.05rem;
}

@media (max-width: 920px) {
  .header-inner {
    min-height: 4.8rem;
  }

  .menu-button {
    display: inline-flex;
    padding: 0.65rem 0;
    border: 0;
    align-items: center;
    gap: 0.7rem;
    background: transparent;
    color: var(--ink);
    font: inherit;
    font-size: 0.78rem;
    font-weight: 800;
  }

  .menu-icon {
    display: flex;
    width: 1.4rem;
    height: 1rem;
    justify-content: space-around;
    flex-direction: column;
  }

  .menu-icon i {
    display: block;
    width: 100%;
    height: 1px;
    background: currentColor;
    transition: transform 160ms ease;
  }

  .menu-button[aria-expanded="true"] .menu-icon i:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] .menu-icon i:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .primary-nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    padding: 1rem 1.5rem 1.5rem;
    border-bottom: 1px solid var(--ink);
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    background: var(--paper);
  }

  .primary-nav[data-open] {
    display: flex;
  }

  .primary-nav a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 0.9rem;
  }

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

  .field-note {
    width: min(100%, 33rem);
    justify-self: end;
  }

  .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-heading-row,
  .loop-intro,
  .welcome-callout {
    grid-template-columns: 1fr;
  }

  .section-heading-row {
    gap: 1.5rem;
  }

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

  .loop-track li:nth-child(2) {
    border-right: 0;
  }

  .loop-track li:nth-child(3),
  .loop-track li:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }

  .principles-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .guide-aside {
    position: static;
  }

  .guide-aside ol {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    border-left: 1px solid var(--line);
  }

  .guide-aside li {
    padding: 0 0.8rem;
    border-right: 1px solid var(--line);
  }
}

@media (max-width: 640px) {
  html {
    scroll-padding-top: 5.5rem;
  }

  .header-inner,
  .hero,
  .section,
  .loop-inner,
  .guide-hero-inner,
  .guide-body,
  .footer-inner {
    width: min(calc(100% - 2rem), var(--content));
  }

  .brand-context {
    display: none;
  }

  .brand-mark {
    width: 2.35rem;
    height: 2.35rem;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .hero h1 {
    font-size: clamp(3.1rem, 16.5vw, 5.2rem);
  }

  .field-note {
    width: calc(100% - 0.5rem);
    padding: 2.5rem 1.5rem 1.7rem;
  }

  .start-list a {
    min-height: 8rem;
    grid-template-columns: 2.2rem minmax(0, 1fr) 2.5rem;
  }

  .step-copy > span {
    font-size: 0.85rem;
  }

  .step-arrow {
    width: 2.4rem;
    height: 2.4rem;
  }

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

  .guide-card {
    min-height: 22rem;
  }

  .loop-track {
    grid-template-columns: 1fr;
  }

  .loop-track li,
  .loop-track li:not(:first-child):not(:last-child),
  .loop-track li:last-child {
    min-height: 10rem;
    padding: 1.3rem 0;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  }

  .loop-track li:not(:first-child) {
    border-top: 0;
  }

  .loop-track li::before {
    display: none;
  }

  .loop-track strong {
    margin-top: 1rem;
  }

  .welcome-callout {
    gap: 2rem;
  }

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

  .footer-meta {
    text-align: left;
  }

  .footer-meta p {
    margin-left: 0;
  }

  .guide-title-row {
    grid-template-columns: 1fr;
  }

  .guide-stamp {
    width: 8rem;
  }

  .guide-aside ol {
    grid-template-columns: 1fr;
  }

  .draft-notice {
    padding: 1.4rem;
    grid-template-columns: 1fr;
  }

  .outline-list article {
    grid-template-columns: 2.5rem 1fr;
  }

  .next-guide {
    align-items: flex-start;
    flex-direction: column;
  }

  .next-guide a {
    text-align: left;
  }
}

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