:root {
  --ink: #3d3933;
  --ink-soft: #655e56;
  --muted: #857d74;
  --paper: #f4f0e7;
  --paper-light: #fffaf2;
  --white: #fffefa;
  --coral: #ed694d;
  --coral-soft: #ffd7cb;
  --orange: #f18b45;
  --sun: #f5b82f;
  --sun-soft: #fff0c4;
  --mint: #c4ded2;
  --mint-deep: #2d7467;
  --sky: #d9e9f2;
  --sky-deep: #3f718a;
  --line: rgba(61, 57, 51, 0.17);
  --line-strong: rgba(61, 57, 51, 0.32);
  --shadow: 0 24px 60px rgba(44, 39, 28, 0.15);
  --display: "Avenir Next", Inter, "Helvetica Neue", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --sans: Inter, "Avenir Next", "Helvetica Neue", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  letter-spacing: 0;
}

a,
button {
  color: inherit;
  font: inherit;
}

a {
  text-decoration: none;
}

button {
  cursor: pointer;
}

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

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

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 16px;
  padding: 10px 14px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-160%);
}

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

.site-header {
  position: absolute;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
}

.nav-shell,
.hero-shell,
.section-shell,
.movement-strip,
.footer-shell {
  width: min(1360px, calc(100% - 72px));
  margin: 0 auto;
}

.nav-shell {
  min-height: 88px;
  display: flex;
  align-items: center;
  gap: 32px;
  border-bottom: 1px solid var(--line);
}

.brand {
  width: 148px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  overflow: hidden;
  background: var(--white);
}

.brand img {
  width: 148px;
  height: 148px;
  object-fit: cover;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 750;
}

.main-nav a {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--coral);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.language-button,
.button {
  min-height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.language-button {
  min-width: 54px;
  padding: 0 12px;
  background: rgba(255, 254, 250, 0.82);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 850;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 18px;
  font-size: 13px;
  font-weight: 850;
}

.button:hover,
.language-button:hover,
.problem-tab:hover,
.stage-button:hover,
.audience-button:hover {
  transform: translateY(-2px);
}

.button-sun {
  color: var(--ink);
  border-color: var(--sun);
  background: var(--sun);
}

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

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

.button-outline {
  color: var(--white);
  border-color: rgba(255, 254, 250, 0.7);
  background: transparent;
}

.hero {
  position: relative;
  min-height: 830px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.hero-side-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: 31%;
  height: 100%;
  border-left: 1px solid rgba(61, 57, 51, 0.08);
  pointer-events: none;
}

.hero-shell {
  position: relative;
  z-index: 1;
  min-height: 830px;
  display: grid;
  grid-template-columns: minmax(360px, 0.85fr) minmax(560px, 1.15fr);
  align-items: center;
  gap: 88px;
  padding: 138px 0 90px;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 600px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--mint-deep);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.eyebrow-line {
  width: 34px;
  height: 2px;
  background: var(--coral);
}

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

.brand-wordmark {
  margin-top: 27px;
  font-family: var(--display);
  font-size: 62px;
  font-weight: 780;
  letter-spacing: -0.03em;
  line-height: 0.96;
  animation: brand-settle 5s ease-in-out infinite;
}

.brand-wordmark-coral {
  color: var(--coral);
}

.brand-wordmark-sun {
  color: var(--sun);
}

.brand-wordmark-orange {
  color: var(--orange);
}

.hero h1 {
  max-width: 610px;
  margin-top: 24px;
  font-family: var(--display);
  font-size: 54px;
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.03;
}

.hero-title-lead,
.hero-title-accent {
  display: block;
}

.hero-title-lead {
  color: var(--coral);
}

.hero-title-accent {
  color: var(--mint-deep);
}

.hero-lead {
  max-width: 500px;
  margin-top: 25px;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.6;
}

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

.hero-note {
  max-width: 390px;
  margin-top: 30px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.hero-visual {
  position: relative;
  min-height: 590px;
  padding-top: 18px;
}

.visual-overline {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.workbench-frame {
  position: absolute;
  top: 72px;
  right: 0;
  width: 89%;
  height: 492px;
  margin: 0;
  overflow: hidden;
  border: 0;
  border-radius: 10px;
  background: var(--paper-light);
  box-shadow: var(--shadow);
  animation: frame-settle 8s ease-in-out infinite;
}

.workbench-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 10px solid rgba(255, 254, 250, 0.28);
  pointer-events: none;
}

.workbench-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.workbench-frame figcaption {
  position: absolute;
  right: 20px;
  bottom: 16px;
  max-width: 210px;
  padding: 9px 11px;
  color: var(--ink);
  background: rgba(255, 254, 250, 0.92);
  font-size: 10px;
  font-weight: 800;
  line-height: 1.35;
}

.brief-sheet {
  position: absolute;
  z-index: 2;
  left: 0;
  bottom: 2px;
  width: 345px;
  padding: 24px;
  border: 1px solid var(--line-strong);
  border-top: 5px solid var(--sun);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 20px 48px rgba(44, 39, 28, 0.2);
  animation: brief-float 6s ease-in-out infinite;
}

.brief-header,
.brief-fields,
.brief-note {
  display: flex;
  align-items: center;
}

.brief-header {
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.brief-header strong {
  color: var(--mint-deep);
  font-size: 8px;
}

.brief-sheet h2 {
  margin-top: 26px;
  font-family: var(--display);
  font-size: 27px;
  font-weight: 760;
  line-height: 1.08;
}

.brief-sheet > p {
  margin-top: 13px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.brief-fields {
  gap: 22px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.brief-fields div {
  min-width: 0;
}

.brief-fields span,
.brief-fields strong {
  display: block;
}

.brief-fields span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 8px;
  text-transform: uppercase;
}

.brief-fields strong {
  margin-top: 6px;
  font-size: 11px;
  line-height: 1.3;
}

.brief-note {
  gap: 8px;
  margin-top: 24px;
  color: var(--coral);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 800;
  text-transform: uppercase;
}

.note-dot,
.status-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--coral);
}

.visual-stamp {
  position: absolute;
  top: 113px;
  left: -28px;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--mint-deep);
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transform: rotate(-90deg) translateX(-100%);
  transform-origin: left top;
}

.stamp-mark {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  color: var(--white);
  background: var(--orange);
  font-size: 8px;
}

.scroll-cue {
  position: absolute;
  right: 36px;
  bottom: 27px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 800;
  text-transform: uppercase;
}

.scroll-cue span:last-child {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.movement-strip {
  display: grid;
  grid-template-columns: 1.3fr repeat(4, 1fr);
  gap: 0;
  align-items: stretch;
  min-height: 106px;
  border-bottom: 1px solid var(--line);
  background: var(--sun-soft);
}

.movement-strip > div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  padding: 18px 24px;
  border-left: 1px solid rgba(61, 57, 51, 0.13);
}

.movement-strip > div:first-child {
  border-left: 0;
}

.movement-strip span {
  color: var(--coral);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 850;
  text-transform: uppercase;
}

.movement-strip strong {
  font-size: 14px;
  line-height: 1.25;
}

.movement-lead strong {
  font-family: var(--display);
  font-size: 20px;
}

.section-space {
  padding: 118px 0 128px;
}

.section-intro {
  max-width: 580px;
}

.section-intro h2 {
  margin-top: 25px;
  font-family: var(--display);
  font-size: 48px;
  font-weight: 740;
  letter-spacing: -0.03em;
  line-height: 1.06;
}

.section-intro > p:last-child {
  margin-top: 24px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.7;
}

.problem-section {
  background: var(--mint);
}

.problem-layout,
.workflow-layout,
.audience-layout,
.trust-layout,
.closing-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(560px, 1.28fr);
  gap: 92px;
  align-items: start;
}

.problem-console {
  min-width: 0;
  padding: 27px 28px 31px;
  border: 1px solid rgba(45, 116, 103, 0.27);
  background: var(--paper-light);
  box-shadow: 0 18px 44px rgba(45, 116, 103, 0.12);
}

.problem-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
}

.problem-tab {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 11px;
  min-width: 0;
  padding: 0 12px 20px;
  color: var(--muted);
  border: 0;
  background: transparent;
  text-align: left;
  transition: transform 180ms ease, color 180ms ease;
}

.problem-tab:first-child {
  padding-left: 0;
}

.problem-tab:last-child {
  padding-right: 0;
}

.problem-tab::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 12px;
  height: 3px;
  background: transparent;
}

.problem-tab:first-child::after {
  left: 0;
}

.problem-tab:last-child::after {
  right: 0;
}

.problem-tab span,
.detail-index,
.stage-number,
.stage-kicker,
.stage-status {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.problem-tab b {
  overflow-wrap: anywhere;
  font-size: 13px;
  line-height: 1.3;
}

.problem-tab.active {
  color: var(--ink);
}

.problem-tab.active::after {
  background: var(--coral);
}

.problem-detail {
  padding-top: 70px;
}

.detail-index {
  color: var(--coral);
}

.problem-detail h3 {
  max-width: 520px;
  margin-top: 16px;
  font-family: var(--display);
  font-size: 31px;
  font-weight: 760;
  line-height: 1.12;
}

.problem-detail p {
  max-width: 520px;
  margin-top: 13px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}

.problem-diagram {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
  color: var(--mint-deep);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 850;
}

.problem-diagram i {
  width: 28px;
  height: 2px;
  background: var(--sun);
}

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

.capability-intro {
  max-width: 670px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 56px;
}

.capability-card {
  position: relative;
  min-height: 238px;
  padding: 23px;
  border: 1px solid rgba(61, 57, 51, 0.15);
  border-radius: 8px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.capability-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 35px rgba(61, 57, 51, 0.13);
}

.capability-coral {
  background: var(--coral-soft);
}

.capability-sun {
  background: var(--sun-soft);
}

.capability-mint {
  background: var(--mint);
}

.capability-sky {
  background: var(--sky);
}

.card-number {
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 850;
}

.capability-card h3 {
  max-width: 170px;
  margin-top: 55px;
  font-family: var(--display);
  font-size: 23px;
  font-weight: 750;
  line-height: 1.12;
}

.capability-card p {
  max-width: 210px;
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.5;
}

.card-arrow {
  position: absolute;
  right: 22px;
  bottom: 20px;
  color: var(--coral);
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 850;
}

.workflow-section {
  background: var(--coral-soft);
}

.workflow-intro {
  max-width: 420px;
}

.stage-panel {
  min-width: 0;
  padding: 27px 28px 31px;
  border: 1px solid rgba(237, 105, 77, 0.25);
  background: var(--paper-light);
  box-shadow: 0 18px 44px rgba(237, 105, 77, 0.13);
}

.stage-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
}

.stage-button {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 11px;
  min-width: 0;
  padding: 0 12px 20px;
  color: var(--muted);
  border: 0;
  background: transparent;
  text-align: left;
  transition: transform 180ms ease, color 180ms ease;
}

.stage-button:first-child {
  padding-left: 0;
}

.stage-button:last-child {
  padding-right: 0;
}

.stage-button::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 12px;
  height: 3px;
  background: transparent;
}

.stage-button:first-child::after {
  left: 0;
}

.stage-button:last-child::after {
  right: 0;
}

.stage-button span {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 800;
}

.stage-button strong {
  overflow-wrap: anywhere;
  font-size: 14px;
}

.stage-button.active {
  color: var(--ink);
}

.stage-button.active::after {
  background: var(--coral);
  animation: line-in 420ms ease-out both;
}

.stage-content {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) auto;
  gap: 28px;
  align-items: end;
  padding-top: 72px;
}

.stage-number {
  align-self: start;
  color: var(--muted);
}

.stage-kicker {
  color: var(--coral);
}

.stage-copy h3 {
  margin-top: 13px;
  color: var(--mint-deep);
  font-family: var(--display);
  font-size: 29px;
  font-weight: 760;
  line-height: 1.12;
}

.stage-copy > p:last-child {
  max-width: 420px;
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.55;
}

.stage-status {
  display: flex;
  align-items: center;
  gap: 9px;
  align-self: start;
  padding-top: 4px;
  color: var(--mint-deep);
  white-space: nowrap;
}

.platform-section {
  background: var(--sky);
}

.platform-intro {
  max-width: 720px;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 56px;
}

.platform-card {
  min-height: 300px;
  padding: 23px;
  border: 1px solid rgba(61, 57, 51, 0.16);
  border-top: 5px solid var(--coral);
  background: var(--paper-light);
}

.platform-meta {
  border-top-color: var(--sun);
}

.platform-instagram {
  border-top-color: var(--mint-deep);
}

.platform-youtube {
  border-top-color: var(--sky-deep);
}

.platform-card h3 {
  margin-top: 34px;
  font-family: var(--display);
  font-size: 23px;
  line-height: 1.12;
}

.platform-card p {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.platform-card small {
  display: block;
  margin-top: 22px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 850;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.audience-section {
  background: var(--sun-soft);
}

.audience-detail {
  padding: 28px;
  border: 1px solid rgba(61, 57, 51, 0.17);
  background: var(--white);
}

.audience-switcher {
  display: flex;
  gap: 10px;
  margin-bottom: 56px;
}

.audience-button {
  min-height: 36px;
  padding: 0 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  font-size: 11px;
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.audience-button.active {
  color: var(--ink);
  border-color: var(--coral);
  background: var(--coral-soft);
}

.audience-detail > span {
  color: var(--coral);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 850;
}

.audience-detail h3 {
  max-width: 490px;
  margin-top: 18px;
  font-family: var(--display);
  font-size: 30px;
  line-height: 1.12;
}

.audience-detail > p {
  max-width: 500px;
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}

.audience-detail small {
  display: block;
  margin-top: 24px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
  line-height: 1.5;
}

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

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

.trust-list article {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: start;
  padding: 21px 0;
  border-bottom: 1px solid var(--line);
}

.trust-list article > span {
  color: var(--coral);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 850;
}

.trust-list strong {
  display: block;
  font-size: 15px;
}

.trust-list p {
  max-width: 430px;
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.5;
}

.trust-list em {
  color: var(--mint-deep);
  font-family: var(--mono);
  font-size: 9px;
  font-style: normal;
  font-weight: 850;
}

.closing-section {
  padding: 92px 0;
  color: var(--white);
  background: var(--coral);
}

.closing-layout {
  align-items: center;
}

.closing-layout h2 {
  max-width: 650px;
  margin-top: 23px;
  font-family: var(--display);
  font-size: 48px;
  font-weight: 750;
  line-height: 1.08;
}

.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

.site-footer {
  background: var(--paper);
}

.footer-shell {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding: 30px 0 34px;
}

.brand-footer {
  width: 122px;
  height: 36px;
}

.brand-footer img {
  width: 122px;
  height: 122px;
}

.footer-brand p {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.03em;
}

.footer-brand small {
  display: block;
  max-width: 280px;
  margin-top: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 8px;
  line-height: 1.5;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 750;
}

.footer-links a:hover {
  color: var(--coral);
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-end;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

@keyframes brand-settle {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2px);
  }
}

@keyframes brief-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

@keyframes frame-settle {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-3px);
  }
}

@keyframes line-in {
  from {
    transform: scaleX(0.25);
    transform-origin: left center;
  }
  to {
    transform: scaleX(1);
    transform-origin: left center;
  }
}

@media (max-width: 1100px) {
  .nav-shell,
  .hero-shell,
  .section-shell,
  .movement-strip,
  .footer-shell {
    width: min(100% - 48px, 960px);
  }

  .hero-shell {
    grid-template-columns: minmax(320px, 0.8fr) minmax(440px, 1.2fr);
    gap: 50px;
  }

  .hero h1 {
    font-size: 50px;
  }

  .brand-wordmark {
    font-size: 55px;
  }

  .brief-sheet {
    width: 315px;
  }

  .problem-layout,
  .workflow-layout,
  .audience-layout,
  .trust-layout,
  .closing-layout {
    gap: 48px;
  }

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

@media (max-width: 820px) {
  .main-nav {
    display: none;
  }

  .nav-actions {
    margin-left: auto;
  }

  .hero,
  .hero-shell {
    min-height: 0;
  }

  .hero-shell {
    display: block;
    padding-top: 128px;
    padding-bottom: 90px;
  }

  .hero-visual {
    min-height: 570px;
    margin-top: 76px;
  }

  .problem-layout,
  .workflow-layout,
  .audience-layout,
  .trust-layout,
  .closing-layout {
    display: block;
  }

  .problem-console,
  .stage-panel,
  .audience-detail,
  .trust-list {
    margin-top: 52px;
  }

  .closing-actions {
    justify-content: flex-start;
    margin-top: 34px;
  }
}

@media (max-width: 560px) {
  .nav-shell,
  .hero-shell,
  .section-shell,
  .movement-strip,
  .footer-shell {
    width: calc(100% - 32px);
  }

  .nav-shell {
    min-height: 74px;
  }

  .brand {
    width: 126px;
    height: 38px;
  }

  .brand img {
    width: 126px;
    height: 126px;
  }

  .nav-actions .button {
    display: none;
  }

  .hero-shell {
    padding-top: 111px;
    padding-bottom: 70px;
  }

  .brand-wordmark {
    margin-top: 23px;
    font-size: 45px;
  }

  .hero h1 {
    margin-top: 19px;
    font-size: 40px;
  }

  .hero-lead {
    margin-top: 21px;
    font-size: 16px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 26px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-visual {
    min-height: 550px;
    margin-top: 59px;
  }

  .workbench-frame {
    top: 64px;
    width: 100%;
    height: 350px;
  }

  .workbench-frame::after {
    border-width: 7px;
  }

  .brief-sheet {
    right: 12px;
    bottom: 0;
    left: 12px;
    width: auto;
    padding: 19px;
  }

  .brief-sheet h2 {
    margin-top: 20px;
    font-size: 23px;
  }

  .visual-stamp {
    top: 88px;
    left: -13px;
    font-size: 7px;
  }

  .scroll-cue {
    right: 16px;
    bottom: 21px;
  }

  .movement-strip {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .movement-strip > div {
    min-height: 92px;
    padding: 16px;
  }

  .movement-strip > div:nth-child(odd) {
    border-left: 0;
  }

  .movement-lead {
    grid-column: 1 / -1;
  }

  .section-space {
    padding: 80px 0 90px;
  }

  .section-intro h2,
  .closing-layout h2 {
    font-size: 39px;
  }

  .problem-console,
  .stage-panel,
  .audience-detail {
    margin-top: 40px;
    padding: 20px 16px 24px;
  }

  .problem-tabs,
  .stage-nav {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px 0;
    padding-bottom: 16px;
  }

  .problem-tab,
  .problem-tab:first-child,
  .problem-tab:last-child,
  .stage-button,
  .stage-button:first-child,
  .stage-button:last-child {
    padding: 0 8px 12px 0;
  }

  .problem-tab::after,
  .problem-tab:first-child::after,
  .problem-tab:last-child::after,
  .stage-button::after,
  .stage-button:first-child::after,
  .stage-button:last-child::after {
    right: 8px;
    bottom: 0;
    left: 0;
  }

  .problem-detail {
    padding-top: 42px;
  }

  .problem-detail h3,
  .audience-detail h3 {
    font-size: 25px;
  }

  .capability-grid,
  .platform-grid {
    grid-template-columns: 1fr;
    margin-top: 40px;
  }

  .capability-card,
  .platform-card {
    min-height: 220px;
  }

  .stage-content {
    display: block;
    padding-top: 42px;
  }

  .stage-copy {
    margin-top: 20px;
  }

  .stage-copy h3 {
    font-size: 25px;
  }

  .stage-status {
    margin-top: 30px;
  }

  .audience-switcher {
    flex-wrap: wrap;
    margin-bottom: 40px;
  }

  .trust-list {
    margin-top: 40px;
  }

  .trust-list article {
    grid-template-columns: 32px minmax(0, 1fr);
  }

  .trust-list em {
    grid-column: 2;
  }

  .footer-shell {
    display: block;
    padding: 24px 0 28px;
  }

  .footer-links {
    margin-top: 22px;
  }

  .footer-meta {
    align-items: flex-start;
    margin-top: 22px;
  }
}

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

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