:root {
  color-scheme: light;
  --color-primary: #2563EB;
  --color-teal: #14B8A6;
  --color-background: #FAFAFA;
  --color-text: #111827;
  --color-muted: #4B5563;
  --color-surface: #F3F4F6;
  --color-blue-container: #DBEAFE;
  --color-white: #FFFFFF;
  --color-border: #E5E7EB;
  --content-width: 1160px;
  --page-gutter: clamp(1.25rem, 5vw, 4.75rem);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  z-index: 10;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 1rem;
  transform: translateY(-160%);
  background: var(--color-text);
  color: var(--color-white);
  text-decoration: none;
}

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

.section-shell,
.header-inner {
  width: min(100% - (var(--page-gutter) * 2), var(--content-width));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 2;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-background);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.wordmark {
  color: var(--color-text);
  font-size: 1.45rem;
  font-weight: 650;
  letter-spacing: 0;
  line-height: 1;
  text-decoration: none;
}

.wordmark span {
  color: var(--color-primary);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.primary-nav a,
.header-link {
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
}

.primary-nav a {
  color: var(--color-muted);
  transition: color 160ms ease;
}

.primary-nav a:hover,
.header-link:hover,
.text-link:hover,
.back-to-top:hover {
  color: var(--color-primary);
}

.header-link {
  color: var(--color-text);
}

.header-link span {
  margin-left: 0.35rem;
  color: var(--color-primary);
}

.hero {
  position: relative;
  min-height: 660px;
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(360px, 0.97fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 6.5rem);
  padding-block: 6.5rem 7.5rem;
}

.hero-copy {
  max-width: 600px;
  padding-bottom: 1rem;
}

.eyebrow,
.section-kicker,
.mini-label,
.illustration-index,
.hero-index,
.audience-marker {
  font-size: 0.6875rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  line-height: 1.5;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 1.55rem;
  color: var(--color-muted);
  letter-spacing: 0.025em;
}

.eyebrow-mark {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-radius: 50%;
  background: var(--color-teal);
}

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

h1,
h2,
h3 {
  color: var(--color-text);
  font-weight: 620;
}

.hero h1 {
  max-width: 640px;
  margin-bottom: 1.25rem;
  font-size: clamp(2.75rem, 5.35vw, 4.5rem);
  line-height: 1.08;
}

.hero h1 span,
.problem-copy h2 span,
.product-copy h2 span,
.difference-heading h2 span {
  color: var(--color-primary);
}

.hero-description {
  max-width: 520px;
  margin-bottom: 1.8rem;
  color: var(--color-muted);
  font-size: 1.125rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  padding: 0.75rem 1.1rem;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

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

.button-primary:hover {
  background: #1D4ED8;
}

.button-primary span {
  font-size: 1rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: color 160ms ease;
}

.text-link span {
  color: var(--color-primary);
  transition: transform 160ms ease;
}

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

.hero-note {
  margin: 1.2rem 0 0;
  color: #6B7280;
  font-size: 0.8125rem;
}

.practice-illustration {
  position: relative;
  width: 100%;
  max-width: 480px;
  min-height: 395px;
  justify-self: end;
  overflow: hidden;
  padding: 1.4rem 1.5rem 1rem;
  border: 1px solid #C7D5E9;
  background: var(--color-blue-container);
}

.illustration-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.illustration-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #334155;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-dot,
.tag-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-teal);
}

.illustration-index {
  color: #52647A;
  font-size: 0.625rem;
}

.experience-note,
.prompt-note {
  position: relative;
  max-width: 350px;
  padding: 1rem 1.05rem;
  border: 1px solid rgb(17 24 39 / 8%);
}

.experience-note {
  margin: 2.15rem 0 0 auto;
  background: var(--color-white);
}

.prompt-note {
  margin-top: 1.2rem;
  background: rgb(255 255 255 / 48%);
}

.mini-label {
  display: block;
  margin-bottom: 0.45rem;
  color: #52647A;
  font-size: 0.5625rem;
}

.experience-note p,
.prompt-note p {
  margin: 0;
  font-size: 0.94rem;
  font-weight: 520;
  line-height: 1.5;
}

.exchange-line {
  position: absolute;
  top: 43%;
  left: 28%;
  width: 35px;
  height: 35px;
  display: grid;
  place-items: center;
  border: 1px solid rgb(37 99 235 / 18%);
  border-radius: 50%;
  background: var(--color-white);
}

.exchange-line span {
  width: 8px;
  height: 8px;
  border-top: 1.5px solid var(--color-primary);
  border-right: 1.5px solid var(--color-primary);
  transform: rotate(45deg);
}

.voice-indicator {
  height: 28px;
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 1.05rem;
}

.voice-indicator span {
  width: 3px;
  height: 8px;
  border-radius: 4px;
  background: var(--color-primary);
  opacity: 0.7;
}

.voice-indicator span:nth-child(3n) { height: 17px; }
.voice-indicator span:nth-child(4n) { height: 23px; }
.voice-indicator span:nth-child(5n) { height: 12px; }
.voice-indicator span:nth-child(7n) { height: 19px; }

.illustration-caption {
  margin: 0;
  color: #52647A;
  font-size: 0.6875rem;
}

.illustration-corner {
  position: absolute;
  right: 1.4rem;
  bottom: 0.8rem;
  color: rgb(37 99 235 / 15%);
  font-size: 2.2rem;
  font-weight: 650;
}

.hero-index {
  position: absolute;
  bottom: 2rem;
  left: 0;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: #6B7280;
  font-size: 0.5625rem;
}

.hero-index > span:first-child {
  color: var(--color-primary);
}

.index-rule {
  width: 35px;
  height: 1px;
  background: #9CA3AF;
}

.problem-section {
  padding-block: 6.5rem;
  border-block: 1px solid var(--color-border);
  background: var(--color-white);
}

.problem-grid {
  display: grid;
  grid-template-columns: 0.72fr 1.7fr 0.9fr;
  align-items: start;
  gap: 2.5rem;
}

.section-kicker {
  margin-bottom: 1rem;
  color: var(--color-primary);
  font-size: 0.625rem;
}

.problem-grid > .section-kicker {
  padding-top: 0.65rem;
}

.problem-copy h2,
.section-heading h2,
.product-copy h2,
.difference-heading h2,
.audience-inner h2 {
  margin-bottom: 1.25rem;
  font-size: clamp(2rem, 3.5vw, 3.1rem);
  line-height: 1.17;
}

.problem-copy p,
.product-copy > p:not(.section-kicker) {
  max-width: 610px;
  margin-bottom: 1rem;
  color: var(--color-muted);
  line-height: 1.8;
}

.problem-aside {
  margin-top: 2.65rem;
  padding-left: 1.35rem;
  border-left: 1px solid #C7D5E9;
}

.aside-word {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #6B7280;
  font-size: 1.3rem;
  font-weight: 550;
}

.aside-arrow {
  color: #9CA3AF;
}

.aside-divider {
  width: 100%;
  height: 1px;
  margin-block: 0.85rem;
  background: var(--color-border);
}

.aside-word-blue {
  color: var(--color-primary);
}

.aside-point {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-teal);
}

.problem-aside p {
  margin: 0.9rem 0 0;
  color: var(--color-muted);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.steps-section {
  padding-block: 7rem 6rem;
}

.section-heading {
  max-width: 650px;
  margin-bottom: 3rem;
}

.section-heading h2 {
  margin-bottom: 1rem;
}

.section-heading > p:last-child {
  max-width: 540px;
  margin: 0;
  color: var(--color-muted);
}

.steps-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  list-style: none;
}

.step-item {
  position: relative;
  min-height: 245px;
  display: flex;
  flex-direction: column;
  padding: 1.35rem 1.2rem 1.5rem 0;
}

.step-item + .step-item {
  padding-left: 1.2rem;
  border-left: 1px solid var(--color-border);
}

.step-number,
.point-number {
  margin-bottom: 2rem;
  color: var(--color-primary);
  font-size: 0.6875rem;
  font-weight: 650;
}

.step-item h3,
.difference-grid h3 {
  margin-bottom: 0.5rem;
  font-size: 1.0625rem;
  line-height: 1.4;
}

.step-item p,
.difference-grid p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

.step-symbol {
  width: 30px;
  height: 30px;
  margin-top: auto;
  padding-top: 1.15rem;
  color: var(--color-primary);
}

.step-symbol-card {
  position: relative;
  width: 24px;
  height: 17px;
  margin-top: 1.35rem;
  padding: 0;
  border: 1.5px solid var(--color-primary);
}

.step-symbol-card::after {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 7px;
  height: 1px;
  background: var(--color-primary);
  box-shadow: 0 4px 0 var(--color-primary), 7px 0 0 var(--color-primary);
  content: "";
}

.step-symbol-wave {
  display: flex;
  align-items: center;
  gap: 3px;
}

.step-symbol-wave i {
  width: 2px;
  height: 9px;
  border-radius: 2px;
  background: var(--color-teal);
}

.step-symbol-wave i:nth-child(2),
.step-symbol-wave i:nth-child(4) { height: 20px; }
.step-symbol-wave i:nth-child(3) { height: 14px; }

.step-symbol-arrow,
.step-symbol-retry {
  font-size: 1.55rem;
  line-height: 1;
}

.loop-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
  margin: 1.3rem 0 0;
  color: var(--color-muted);
  font-size: 0.75rem;
  font-weight: 550;
}

.loop-summary > span {
  color: var(--color-teal);
  font-size: 1rem;
}

.loop-summary i {
  color: #9CA3AF;
  font-style: normal;
}

.product-section {
  padding-block: 6rem;
  background: var(--color-surface);
}

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

.product-copy {
  max-width: 760px;
}

.product-copy h2 {
  margin-bottom: 1rem;
}

.product-copy > p:not(.section-kicker) {
  margin-bottom: 1.5rem;
}

.product-link {
  margin-top: 0.25rem;
}

.showcase-shell {
  margin-top: clamp(4rem, 7vw, 6rem);
}

.showcase-heading {
  max-width: 660px;
  margin-bottom: 2rem;
}

.showcase-heading h3 {
  margin-bottom: 0.55rem;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  line-height: 1.25;
}

.showcase-heading > p:last-child {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
  gap: clamp(1rem, 2.5vw, 2rem);
}

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

.showcase-item-heading {
  min-height: 38px;
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  margin-bottom: 0.7rem;
}

.showcase-number {
  color: var(--color-primary);
  font-size: 0.6875rem;
  font-weight: 650;
}

.showcase-item-heading h4 {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
}

.phone-mockup {
  position: relative;
  width: min(100%, 330px);
  min-height: 474px;
  display: flex;
  flex-direction: column;
  margin-inline: auto;
  overflow: hidden;
  border: 1px solid #C7D5E9;
  border-radius: 22px;
  background: var(--color-white);
  box-shadow: 0 8px 24px rgb(17 24 39 / 5%);
}

.phone-status {
  height: 31px;
  flex: 0 0 31px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: 1.1rem;
  color: var(--color-text);
  font-size: 0.625rem;
  font-weight: 650;
}

.phone-status-mark {
  margin-left: auto;
  color: #4B5563;
  font-size: 0.4375rem;
  letter-spacing: 0.12em;
}

.phone-appbar {
  min-height: 44px;
  display: grid;
  grid-template-columns: 25px 1fr auto;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.75rem;
  font-weight: 600;
}

.phone-back {
  color: var(--color-primary);
  font-size: 1rem;
  font-weight: 500;
}

.phone-step {
  color: var(--color-muted);
  font-size: 0.625rem;
  font-weight: 500;
}

.phone-body {
  flex: 1;
  padding: 1.1rem 1rem 1rem;
}

.phone-eyebrow {
  display: block;
  margin-bottom: 0.45rem;
  color: #52647A;
  font-size: 0.625rem;
  font-weight: 650;
  letter-spacing: 0.055em;
  line-height: 1.4;
}

.phone-project {
  margin-bottom: 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
}

.interview-question {
  padding: 0.9rem;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  background: var(--color-white);
}

.interview-question p {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 550;
  line-height: 1.55;
}

.voice-panel {
  margin-top: 1.1rem;
  padding: 0.85rem 0.9rem;
  border: 1px solid #C7D5E9;
  background: #F5F8FD;
}

.voice-live {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-text);
  font-size: 0.6875rem;
  font-weight: 550;
}

.voice-live i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-teal);
}

.mock-waveform {
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3px;
  margin-block: 0.55rem;
}

.mock-waveform i {
  width: 3px;
  height: 8px;
  border-radius: 3px;
  background: var(--color-primary);
  opacity: 0.76;
}

.mock-waveform i:nth-child(4n) { height: 26px; }
.mock-waveform i:nth-child(3n) { height: 18px; }
.mock-waveform i:nth-child(5n) { height: 12px; }

.voice-hint {
  color: var(--color-muted);
  font-size: 0.6875rem;
}

.feedback-answer {
  margin-bottom: 0.8rem;
  padding: 0.65rem 0.7rem;
  border: 1px solid var(--color-border);
  background: #F9FAFB;
  color: #374151;
  font-size: 0.6875rem;
  line-height: 1.5;
}

.feedback-list {
  border-top: 1px solid var(--color-border);
}

.feedback-example-label {
  margin: 0;
  padding: 0.55rem 0 0.25rem;
  color: var(--color-muted);
  font-size: 0.6875rem;
  font-weight: 600;
}

.feedback-row {
  display: grid;
  grid-template-columns: 24px 1fr;
  align-items: start;
  gap: 0.55rem;
  padding-block: 0.62rem;
  border-bottom: 1px solid var(--color-border);
}

.feedback-icon {
  width: 21px;
  height: 21px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 0.5625rem;
  font-weight: 650;
}

.feedback-blue {
  background: var(--color-blue-container);
  color: #1D4ED8;
}

.feedback-teal {
  background: #CCFBF1;
  color: #0F766E;
}

.feedback-row h5 {
  margin: 0 0 0.15rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.35;
}

.feedback-row p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.6875rem;
  line-height: 1.45;
}

.retry-state {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.1rem;
  color: #0F766E;
  font-size: 0.625rem;
  font-weight: 650;
  letter-spacing: 0.045em;
}

.retry-state span {
  font-size: 0.9rem;
}

.retry-question {
  margin-bottom: 0.8rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.45;
}

.selected-answer,
.retry-focus {
  padding: 0.8rem;
  border: 1px solid var(--color-border);
}

.selected-answer {
  background: #F9FAFB;
}

.selected-answer p,
.retry-focus p {
  margin: 0;
  color: #374151;
  font-size: 0.75rem;
  line-height: 1.55;
}

.retry-focus {
  margin-top: 0.65rem;
  border-color: #B7D1F5;
  background: #F3F8FF;
}

.retry-caption {
  margin: 0.8rem 0 0;
  color: var(--color-muted);
  font-size: 0.6875rem;
  line-height: 1.5;
}

.showcase-disclosure {
  margin: 0.75rem 0 0;
  color: var(--color-muted);
  font-size: 0.6875rem;
  line-height: 1.5;
  text-align: center;
}

.difference-section {
  padding-block: 7rem;
}

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

.difference-heading h2 {
  max-width: 800px;
  margin-bottom: 0;
}

.difference-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
}

.difference-grid article {
  padding: 1.4rem 2rem 0 0;
}

.difference-grid article + article {
  padding-left: 2rem;
  border-left: 1px solid var(--color-border);
}

.difference-mark {
  display: inline-block;
  margin-bottom: 1.7rem;
  color: var(--color-teal);
  font-size: 0.6875rem;
  font-weight: 650;
}

.difference-grid h3 {
  font-size: 1.125rem;
}

.audience-section {
  padding-block: 5rem;
  border-block: 1px solid #C7D5E9;
  background: var(--color-blue-container);
}

.audience-inner {
  display: grid;
  grid-template-columns: 0.65fr 1.6fr auto;
  align-items: center;
  gap: 2rem;
}

.audience-marker {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.65rem;
  color: #52647A;
  font-size: 0.5625rem;
}

.marker-line {
  width: 36px;
  height: 1px;
  background: #8295AE;
}

.audience-inner .section-kicker {
  color: #1D4ED8;
}

.audience-inner h2 {
  font-size: clamp(1.9rem, 3.2vw, 2.75rem);
}

.audience-description {
  max-width: 620px;
  margin: 0;
  color: #374151;
  line-height: 1.75;
}

.audience-tag {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  max-width: 210px;
  padding: 0.75rem 0.85rem;
  border: 1px solid #B7C9E1;
  background: rgb(255 255 255 / 56%);
  color: #334155;
  font-size: 0.6875rem;
  font-weight: 550;
  line-height: 1.5;
}

.site-footer {
  padding-block: 2.2rem;
  background: var(--color-white);
}

.footer-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.65rem 2rem;
}

.footer-wordmark {
  font-size: 1.25rem;
}

.footer-inner > p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.8125rem;
}

.back-to-top {
  justify-self: end;
  color: var(--color-text);
  font-size: 0.8125rem;
  font-weight: 550;
  text-decoration: none;
}

.back-to-top span {
  margin-left: 0.35rem;
  color: var(--color-primary);
}

@media (max-width: 900px) {
  .hero {
    min-height: auto;
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.9fr);
    gap: 2rem;
    padding-block: 5.5rem 6rem;
  }

  .hero h1 {
    font-size: clamp(2.65rem, 6vw, 3.75rem);
  }

  .problem-grid {
    grid-template-columns: 0.6fr 1.5fr;
  }

  .problem-aside {
    grid-column: 2;
    margin-top: 0.25rem;
  }

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

  .step-item {
    min-height: 215px;
  }

  .step-item:nth-child(3) {
    padding-left: 0;
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }

  .step-item:nth-child(4) {
    border-top: 1px solid var(--color-border);
  }

  .audience-inner {
    grid-template-columns: 0.5fr 1.5fr;
  }

  .audience-tag {
    grid-column: 2;
    max-width: none;
    justify-self: start;
  }

  .showcase-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .showcase-item:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  html {
    scroll-padding-top: 1rem;
  }

  .header-inner {
    min-height: 68px;
    flex-wrap: wrap;
    gap: 0.6rem 1rem;
    padding-block: 0.8rem;
  }

  .wordmark {
    font-size: 1.3rem;
  }

  .primary-nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 0.75rem;
    padding-top: 0.25rem;
  }

  .wordmark,
  .header-link {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
  }

  .primary-nav a {
    min-height: 40px;
    display: flex;
    align-items: center;
    font-size: 0.75rem;
  }

  .header-link {
    font-size: 0.75rem;
  }

  .hero {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 2.5rem;
    padding-block: 4rem 5.5rem;
  }

  .hero-copy {
    padding: 0;
  }

  .eyebrow {
    align-items: flex-start;
    font-size: 0.6875rem;
  }

  .hero h1 {
    font-size: clamp(2.65rem, 12vw, 3.6rem);
  }

  .hero-description {
    font-size: 1rem;
  }

  .hero-actions {
    align-items: flex-start;
    gap: 1rem 1.3rem;
  }

  .practice-illustration {
    min-height: 360px;
    padding-inline: 1rem;
  }

  .experience-note,
  .prompt-note {
    max-width: calc(100% - 0.25rem);
  }

  .exchange-line {
    top: 42%;
    left: auto;
    right: 17%;
  }

  .hero-index {
    bottom: 1.75rem;
  }

  .problem-section,
  .steps-section,
  .product-section,
  .difference-section {
    padding-block: 4.5rem;
  }

  .problem-grid {
    display: block;
  }

  .problem-grid > .section-kicker {
    margin-bottom: 1.3rem;
  }

  .problem-copy h2,
  .section-heading h2,
  .product-copy h2,
  .difference-heading h2,
  .audience-inner h2 {
    font-size: clamp(2rem, 9vw, 2.7rem);
  }

  .problem-aside {
    max-width: 260px;
    margin: 2rem 0 0;
  }

  .section-heading {
    margin-bottom: 2rem;
  }

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

  .step-item,
  .step-item + .step-item,
  .step-item:nth-child(3),
  .step-item:nth-child(4) {
    min-height: auto;
    padding: 1.25rem 0;
    border-top: 0;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
    border-left: 0;
  }

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

  .step-number {
    margin-bottom: 0.7rem;
  }

  .step-symbol {
    position: absolute;
    top: 1.1rem;
    right: 0;
    margin: 0;
  }

  .step-symbol-wave {
    top: 1rem;
  }

  .step-symbol-card {
    top: 1.25rem;
  }

  .loop-summary {
    gap: 0.45rem;
    font-size: 0.6875rem;
  }

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

  .showcase-shell {
    margin-top: 3.5rem;
  }

  .showcase-heading {
    margin-bottom: 1.5rem;
  }

  .showcase-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .showcase-item:last-child {
    grid-column: auto;
  }

  .showcase-item-heading {
    min-height: auto;
    margin-bottom: 0.55rem;
  }

  .phone-mockup {
    width: min(100%, 350px);
  }

  .difference-heading {
    margin-bottom: 2rem;
  }

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

  .difference-grid article,
  .difference-grid article + article {
    padding: 1.15rem 0 1.35rem;
    border-bottom: 1px solid var(--color-border);
    border-left: 0;
  }

  .difference-mark {
    margin-bottom: 0.8rem;
  }

  .audience-section {
    padding-block: 3.5rem;
  }

  .audience-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .audience-marker {
    flex-direction: row;
    align-items: center;
  }

  .audience-tag {
    grid-column: 1;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    gap: 0.75rem 1rem;
  }

  .footer-inner > p {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .back-to-top {
    grid-column: 2;
    grid-row: 1;
  }

}

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