:root {
  --ink: #171916;
  --muted: #666b63;
  --paper: #fafafa;
  --soft: #f0f2ed;
  --surface: #ffffff;
  --line: #d9ddd5;
  --red: #9b3a31;
  --red-dark: #7e2e28;
  --green: #285d47;
  --blue: #29465a;
  --shadow: 0 18px 45px rgba(23, 25, 22, 0.1);
  --max: 1180px;
  --radius: 6px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  line-height: 1.72;
}

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

a {
  color: inherit;
}

code {
  padding: 2px 5px;
  background: rgba(23, 25, 22, 0.07);
  border-radius: 3px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.92em;
}

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

.read-progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: 3px;
  background: transparent;
}

.read-progress span {
  display: block;
  width: 0%;
  height: 100%;
  background: var(--red);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 36px;
  background: rgba(250, 250, 250, 0.92);
  border-bottom: 1px solid rgba(217, 221, 213, 0.86);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 190px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: #fff;
  background: var(--ink);
  border-radius: 50%;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 19px;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.2;
}

.brand strong {
  font-size: 15px;
  letter-spacing: 0;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.main-nav a {
  padding: 8px 11px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  text-decoration: none;
  font-size: 14px;
  line-height: 1.2;
}

.main-nav a.is-active,
.main-nav a:hover {
  color: var(--ink);
  border-color: var(--red);
}

.hero {
  position: relative;
  min-height: 78vh;
  padding: 118px 36px 92px;
  overflow: hidden;
  isolation: isolate;
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-copy {
  width: min(580px, 92vw);
  margin-left: max(0px, calc((100vw - var(--max)) / 2));
}

.hero h1 {
  margin: 0 0 22px;
  max-width: 540px;
  font-family: "Noto Serif SC", "Source Han Serif SC", SimSun, Georgia, serif;
  font-size: 54px;
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: 0;
}

.hero p {
  margin: 0;
  max-width: 560px;
  color: #30342f;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 11px 18px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
}

.primary-link {
  color: #fff;
  background: var(--ink);
}

.secondary-link {
  background: rgba(255, 255, 255, 0.52);
}

.summary-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.section-inner {
  width: min(var(--max), calc(100% - 72px));
  margin: 0 auto;
}

.three-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.three-points article {
  padding: 30px 28px;
  border-right: 1px solid var(--line);
}

.three-points article:first-child {
  border-left: 1px solid var(--line);
}

.three-points span,
.chapter-number,
.conditions-grid span {
  color: var(--red);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 14px;
  font-weight: 700;
}

.three-points h2,
.three-points p,
.chapter-heading h2,
.chapter-heading p,
.definition-lead h3,
.not-technical h3,
.trust-row h3,
.conditions-grid h3,
.method-layout h3,
.cycle-grid h3,
.platform-map h3,
.platform-card h3,
.advantage-layout h3,
.evidence-package h3,
.sales h3,
.sources h2 {
  margin-top: 0;
}

.three-points h2 {
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.35;
}

.three-points p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
}

.chapter {
  padding: 92px 0;
  scroll-margin-top: 84px;
}

.chapter:nth-of-type(odd) {
  background: var(--surface);
}

.chapter-heading {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  column-gap: 28px;
  margin-bottom: 38px;
}

.chapter-heading .chapter-number {
  padding-top: 8px;
  border-top: 2px solid var(--red);
}

.chapter-heading > p:not(.chapter-number) {
  grid-column: 2;
}

.chapter-heading h2 {
  max-width: 830px;
  margin-bottom: 16px;
  font-family: "Noto Serif SC", "Source Han Serif SC", SimSun, Georgia, serif;
  font-size: 34px;
  line-height: 1.22;
  letter-spacing: 0;
}

.chapter-heading p {
  max-width: 820px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
}

.evidence {
  background: #f4f6f2;
}

.evidence-ledger {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.evidence-ledger article {
  display: flex;
  flex-direction: column;
  min-height: 284px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.evidence-ledger h3 {
  margin: 14px 0 10px;
  font-size: 19px;
  line-height: 1.4;
}

.evidence-ledger p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
}

.evidence-ledger strong {
  margin-top: auto;
  color: var(--green);
  font-size: 14px;
}

.source-tag,
.source-patterns > div > span,
.kpi-intro > span,
.matrix-heading > span {
  color: var(--red);
  font-size: 13px;
  font-weight: 700;
}

.research-numbers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 18px;
  color: #fff;
  background: var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
}

.research-numbers div {
  padding: 24px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.research-numbers strong,
.research-numbers span {
  display: block;
}

.research-numbers strong {
  margin-bottom: 6px;
  color: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 27px;
  line-height: 1.2;
}

.research-numbers span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.research-numbers > p {
  grid-column: 1 / -1;
  margin: 0;
  padding: 14px 24px;
  color: rgba(255, 255, 255, 0.64);
  background: rgba(255, 255, 255, 0.06);
  font-size: 13px;
}

.definition-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 24px;
  align-items: stretch;
}

.definition-lead,
.not-technical,
.rewrite-box,
.script-card,
.closing-note,
.media-proof,
.evidence-package {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.definition-lead {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.definition-lead p {
  color: rgba(255, 255, 255, 0.82);
}

.definition-lead strong {
  color: #fff;
  font-size: 22px;
  line-height: 1.5;
}

.not-technical ul,
.steps ol,
.script-card ol,
.platform-card ul {
  margin: 0;
  padding-left: 22px;
}

.not-technical li,
.steps li,
.script-card li,
.platform-card li {
  margin: 9px 0;
}

.trust-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.trust-row article {
  padding: 24px;
  background: var(--soft);
  border-left: 4px solid var(--green);
  border-radius: var(--radius);
}

.trust-row p,
.conditions-grid p,
.platform-map p,
.platform-card p,
.advantage-list p,
.evidence-package p,
.closing-note p {
  margin-bottom: 0;
  color: var(--muted);
}

.contrast {
  background: #f6f7f5;
}

.comparison-stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.journey {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.journey h3 {
  margin: 0 0 18px;
}

.journey p {
  margin: 18px 0 0;
  color: var(--muted);
}

.query-shift {
  display: grid;
  grid-template-columns: minmax(180px, 0.48fr) minmax(0, 1.52fr);
  gap: 8px 24px;
  margin-top: 18px;
  padding: 20px 24px;
  background: var(--soft);
  border-left: 4px solid var(--red);
  border-radius: var(--radius);
}

.query-shift strong {
  color: var(--green);
}

.query-shift span {
  color: #353a34;
}

.query-shift small {
  grid-column: 2;
  color: var(--muted);
  line-height: 1.55;
}

.sketch-line {
  display: grid;
  grid-template-columns: 1fr auto 1.2fr auto 1fr;
  gap: 8px;
  align-items: center;
}

.node {
  min-height: 66px;
  display: grid;
  place-items: center;
  padding: 12px;
  text-align: center;
  background: #fff;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 5px 5px 0 rgba(40, 93, 71, 0.18);
  font-weight: 700;
}

.geo-journey .node {
  border-color: var(--green);
  box-shadow: 5px 5px 0 rgba(155, 58, 49, 0.16);
}

.arrow {
  color: var(--red);
  font-weight: 800;
}

.tab-panel {
  margin-top: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.tab-buttons,
.platform-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid var(--line);
}

.tab-buttons button,
.platform-buttons button {
  appearance: none;
  min-height: 46px;
  padding: 12px 18px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.tab-buttons button.is-active,
.platform-buttons button.is-active {
  color: #fff;
  background: var(--green);
}

.tab-content {
  display: none;
  padding: 24px;
}

.tab-content.is-active {
  display: block;
}

.split-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.split-list p {
  margin: 0;
  padding: 20px;
  background: var(--soft);
  border-radius: var(--radius);
}

.conditions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.conditions-grid article {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.conditions-grid h3 {
  margin-bottom: 10px;
  font-size: 19px;
  line-height: 1.35;
}

.source-patterns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.source-patterns > div {
  padding: 22px;
  background: #f7f8f6;
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
}

.source-patterns h3 {
  margin: 6px 0 8px;
  font-size: 18px;
}

.source-patterns p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.82fr);
  gap: 24px;
  margin-top: 30px;
}

.steps {
  padding: 28px 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.steps li::marker,
.script-card li::marker {
  color: var(--red);
  font-weight: 700;
}

.before-after {
  display: grid;
  gap: 14px;
}

.before-after div {
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #f7f8f6;
}

.before-after span {
  display: block;
  margin-bottom: 6px;
  color: var(--red);
  font-size: 13px;
  font-weight: 700;
}

.before-after p {
  margin: 0;
}

.note {
  margin: 18px 0 0;
  color: var(--green);
  font-weight: 700;
}

.cycle-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 30px;
  padding: 24px;
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
}

.cycle-grid h3 {
  grid-column: 1 / -1;
  margin-bottom: 4px;
}

.cycle-grid div {
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.cycle-grid p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.kpi-panel {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: 28px;
  margin-top: 30px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.kpi-intro h3 {
  margin: 7px 0 10px;
}

.kpi-intro p {
  margin: 0;
  color: var(--muted);
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.kpi-grid div {
  min-height: 88px;
  padding: 14px 16px;
  background: var(--soft);
  border-radius: var(--radius);
}

.kpi-grid strong,
.kpi-grid span {
  display: block;
}

.kpi-grid strong {
  margin-bottom: 4px;
  color: var(--green);
  font-size: 15px;
}

.kpi-grid span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.platforms {
  background: var(--surface);
}

.platform-map {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.platform-map article {
  padding: 22px;
  background: #f7f8f6;
  border-top: 4px solid var(--blue);
  border-radius: var(--radius);
}

.platform-switcher {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.platform-card {
  display: none;
  padding: 30px;
}

.platform-card.is-active {
  display: block;
}

.platform-card h3 {
  color: var(--green);
}

.channel-matrix {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.matrix-heading {
  display: grid;
  grid-template-columns: minmax(250px, 0.72fr) minmax(0, 1.28fr);
  column-gap: 28px;
  margin-bottom: 18px;
}

.matrix-heading > span {
  grid-column: 1;
}

.matrix-heading h3 {
  grid-column: 1;
  margin: 5px 0 0;
}

.matrix-heading p {
  grid-column: 2;
  grid-row: 1 / span 2;
  margin: 0;
  color: var(--muted);
}

.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.channel-matrix table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
  background: var(--surface);
  font-size: 14px;
}

.channel-matrix th,
.channel-matrix td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.channel-matrix th {
  color: #fff;
  background: var(--blue);
  font-size: 13px;
}

.channel-matrix tbody tr:last-child td {
  border-bottom: 0;
}

.channel-matrix tbody td:first-child {
  color: var(--green);
  font-weight: 700;
}

.tools {
  background: #f6f7f5;
}

.tool-taxonomy {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.tool-taxonomy article {
  min-height: 220px;
  padding: 22px;
  background: var(--surface);
  border-top: 4px solid var(--green);
  border-radius: var(--radius);
}

.tool-taxonomy span {
  color: var(--red);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 14px;
  font-weight: 700;
}

.tool-taxonomy h3 {
  margin: 14px 0 8px;
  font-size: 18px;
}

.tool-taxonomy p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.tool-roster {
  margin-top: 20px;
  padding: 26px;
  color: #fff;
  background: var(--ink);
  border-radius: var(--radius);
}

.tool-roster h3 {
  margin: 0 0 8px;
}

.tool-roster > p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.tool-examples {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 20px 0;
}

.tool-examples div {
  padding: 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
}

.tool-examples strong,
.tool-examples span {
  display: block;
}

.tool-examples strong {
  margin-bottom: 5px;
  color: #fff;
}

.tool-examples span {
  color: rgba(255, 255, 255, 0.65);
  font-size: 13px;
}

.tool-roster .tool-note {
  padding-top: 16px;
  color: rgba(255, 255, 255, 0.84);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-weight: 700;
}

.hubei {
  background: #f6f7f5;
}

.advantage-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  gap: 24px;
}

.media-proof {
  color: #fff;
  background: var(--red-dark);
  border-color: var(--red-dark);
}

.media-proof p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 18px;
}

.advantage-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.advantage-list article {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.evidence-package {
  margin-top: 24px;
}

.package-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
  margin: 20px 0;
}

.package-grid span {
  display: grid;
  min-height: 52px;
  place-items: center;
  padding: 10px;
  text-align: center;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
}

.sales-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.checklist {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
  padding: 24px;
  background: #f7f8f6;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.checklist h3 {
  grid-column: 1 / -1;
  margin-bottom: 4px;
}

.check-item {
  appearance: none;
  min-height: 54px;
  padding: 12px 14px 12px 40px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
  font: inherit;
  font-size: 15px;
  cursor: pointer;
  position: relative;
}

.check-item::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 18px;
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--green);
  border-radius: 3px;
}

.check-item.is-checked {
  border-color: rgba(40, 93, 71, 0.42);
  background: rgba(40, 93, 71, 0.08);
}

.check-item.is-checked::before {
  background: var(--green);
  box-shadow: inset 0 0 0 3px #fff;
}

.closing-note {
  margin-top: 24px;
  border-left: 4px solid var(--red);
}

.sources {
  padding: 48px 0 58px;
  color: #fff;
  background: var(--ink);
}

.sources p {
  max-width: 920px;
  color: rgba(255, 255, 255, 0.72);
}

.sources code {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.source-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.source-links a {
  padding: 8px 11px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 13px;
}

.source-links a:hover {
  border-color: rgba(255, 255, 255, 0.64);
}

@media (max-width: 1040px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .main-nav {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 96px;
  }

  .hero h1 {
    font-size: 44px;
  }

  .three-points,
  .evidence-ledger,
  .conditions-grid,
  .platform-map,
  .cycle-grid,
  .package-grid,
  .checklist {
    grid-template-columns: repeat(2, 1fr);
  }

  .tool-taxonomy {
    grid-template-columns: repeat(3, 1fr);
  }

  .method-layout,
  .advantage-layout,
  .kpi-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .site-header {
    padding: 12px 18px;
  }

  .main-nav a {
    padding: 7px 8px;
    font-size: 13px;
  }

  .section-inner {
    width: min(100% - 36px, var(--max));
  }

  .hero {
    min-height: 74vh;
    padding: 74px 18px 70px;
  }

  .hero-image {
    object-position: 42% center;
  }

  .hero-copy {
    width: min(430px, 92vw);
  }

  .hero h1 {
    max-width: 360px;
    font-size: 36px;
  }

  .hero p {
    max-width: 390px;
    font-size: 16px;
  }

  .chapter {
    padding: 64px 0;
  }

  .chapter-heading {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .chapter-heading > p:not(.chapter-number) {
    grid-column: auto;
  }

  .chapter-heading .chapter-number {
    width: 58px;
  }

  .chapter-heading h2 {
    font-size: 28px;
  }

  .three-points,
  .evidence-ledger,
  .research-numbers,
  .definition-grid,
  .comparison-stage,
  .split-list,
  .trust-row,
  .conditions-grid,
  .source-patterns,
  .platform-map,
  .cycle-grid,
  .kpi-grid,
  .advantage-list,
  .sales-grid,
  .checklist,
  .tool-taxonomy,
  .tool-examples {
    grid-template-columns: 1fr;
  }

  .evidence-ledger article,
  .tool-taxonomy article {
    min-height: auto;
  }

  .research-numbers div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .matrix-heading {
    grid-template-columns: 1fr;
  }

  .query-shift {
    grid-template-columns: 1fr;
  }

  .query-shift small {
    grid-column: 1;
  }

  .matrix-heading > span,
  .matrix-heading h3,
  .matrix-heading p {
    grid-column: 1;
    grid-row: auto;
  }

  .matrix-heading p {
    margin-top: 10px;
  }

  .three-points article,
  .three-points article:first-child {
    border-left: 1px solid var(--line);
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .sketch-line {
    grid-template-columns: 1fr;
  }

  .arrow {
    text-align: center;
    transform: rotate(90deg);
  }

  .tab-buttons button,
  .platform-buttons button {
    flex: 1 1 50%;
    border-bottom: 1px solid var(--line);
  }

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

@media (max-width: 420px) {
  .hero h1 {
    font-size: 32px;
  }

  .primary-link,
  .secondary-link {
    width: 100%;
    justify-content: center;
  }

  .definition-lead,
  .not-technical,
  .rewrite-box,
  .script-card,
  .closing-note,
  .media-proof,
  .evidence-package,
  .journey,
  .steps,
  .platform-card {
    padding: 22px;
  }
}