:root {
  color-scheme: light;
  --ink: #16201a;
  --muted: #5c685f;
  --paper: #f5f3ec;
  --panel: #fffdf7;
  --line: #d9d7cd;
  --green: #1e5f45;
  --green-dark: #134633;
  --green-soft: #dcebe1;
  --amber: #a24e18;
  --amber-soft: #fff0dc;
  --red: #9e352f;
  --red-soft: #fbe5e1;
  --shadow: 0 24px 70px rgba(27, 39, 31, 0.1);
}

.official-note {
  max-width: 760px;
  margin-top: 22px;
  padding: 12px 14px;
  border-left: 3px solid var(--green, #1e5f45);
  background: #f3f7f4;
  color: #4f5d54;
  font-size: 14px;
}

.selected-files {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
}

.selected-files span {
  padding: 6px 9px;
  border-radius: 999px;
  background: #edf4ef;
  color: #355344;
  font-size: 12px;
}

.issue-item p strong,
.issue-item p small {
  display: block;
}

.issue-item p small {
  margin-top: 4px;
  color: #6e786f;
}

.locked-report {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 230px;
  gap: 30px;
  align-items: center;
  background: linear-gradient(135deg, #eff6f1, #fbfaf5);
}

.compact-list {
  margin-bottom: 0;
}

.unlock-box {
  display: grid;
  gap: 12px;
  text-align: center;
  padding: 24px;
  border: 1px solid #cedbd1;
  border-radius: 16px;
  background: #fff;
}

.unlock-box > strong {
  font-size: 48px;
  line-height: 1;
}

.unlock-box > strong small {
  font-size: 22px;
  vertical-align: top;
}

.unlock-box small {
  color: #68736a;
}

.full-report {
  border-color: #8db19a;
  background: #f4faf5;
}

.full-report-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.full-report-grid div {
  padding: 15px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid #d8e4da;
}

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

.full-report-grid span {
  color: #667068;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.full-report-grid strong {
  margin-top: 4px;
  font-size: 26px;
}

.account-dialog,
.payment-dialog {
  width: min(680px, calc(100vw - 32px));
  max-height: calc(100vh - 40px);
  overflow: auto;
  padding: 30px;
  border: 0;
  border-radius: 20px;
  box-shadow: 0 24px 80px rgba(17, 40, 27, .24);
}

.account-dialog::backdrop,
.payment-dialog::backdrop {
  background: rgba(17, 30, 21, .55);
}

.account-dialog .dialog-close,
.payment-dialog .dialog-close,
.explain-dialog > .dialog-close {
  float: right;
}

.auth-tabs {
  display: flex;
  gap: 8px;
  margin: 20px 0;
  border-bottom: 1px solid #d9e0da;
}

.auth-tab {
  padding: 10px 2px;
  margin-right: 18px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: #667068;
  font: inherit;
  cursor: pointer;
}

.auth-tab.active {
  border-color: #1e5f45;
  color: #1e5f45;
  font-weight: 700;
}

#auth-form {
  display: grid;
  gap: 14px;
}

#auth-form label {
  display: grid;
  gap: 6px;
  font-weight: 650;
}

#auth-form input {
  padding: 12px;
  border: 1px solid #cbd4cd;
  border-radius: 9px;
  font: inherit;
}

.form-error {
  min-height: 1.4em;
  color: #a03224;
}

.account-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 16px 0;
}

.job-history {
  display: grid;
  gap: 8px;
}

.job-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid #e1e6e2;
}

.job-row strong,
.job-row span {
  display: block;
}

.job-row span {
  margin-top: 3px;
  color: #68736a;
  font-size: 13px;
}

.job-row em {
  flex: 0 0 auto;
  padding: 5px 8px;
  border-radius: 999px;
  background: #edf2ee;
  color: #526158;
  font-size: 11px;
  font-style: normal;
  text-transform: uppercase;
}

.job-row em[data-status="paid"],
.job-row em[data-status="completed"] {
  background: #e2f4e7;
  color: #1e5f45;
}

.job-row em[data-status="refunded"],
.job-row em[data-status="disputed"] {
  background: #fae9e5;
  color: #993c2c;
}

#paypal-buttons {
  min-height: 44px;
  margin-top: 18px;
}

button:disabled {
  cursor: wait;
  opacity: .65;
}

.header-link {
  color: var(--muted);
  font-size: .86rem;
  font-weight: 750;
  text-decoration: none;
}

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

.guide-section {
  padding-bottom: 20px;
}

.guide-heading {
  align-items: end;
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, .75fr);
}

.guide-heading p {
  color: var(--muted);
  font-size: 1.05rem;
}

.guide-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin-top: 34px;
}

.guide-grid a {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  display: grid;
  gap: 10px;
  grid-column: span 2;
  min-height: 210px;
  padding: 24px;
  text-decoration: none;
  transition: border-color 150ms ease, transform 150ms ease;
}

.guide-grid a:nth-child(4),
.guide-grid a:nth-child(5) {
  grid-column: span 3;
}

.guide-grid a:hover {
  border-color: #8db19a;
  transform: translateY(-2px);
}

.guide-grid span {
  color: var(--green);
  font-size: .72rem;
  font-weight: 850;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.guide-grid strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.45rem;
  line-height: 1.15;
}

.guide-grid small {
  color: var(--muted);
  font-size: .9rem;
}

.metric-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 14px 0 22px;
}

.metric-grid > div {
  background: #f3f7f4;
  border: 1px solid #d8e4da;
  border-radius: 10px;
  padding: 11px;
}

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

.metric-grid span {
  color: var(--muted);
  font-size: .7rem;
  text-transform: uppercase;
}

.metric-grid strong {
  font-size: 1.35rem;
}

.guide-page {
  background: var(--paper);
}

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

.guide-header .site-header {
  padding-bottom: 18px;
  padding-top: 18px;
}

.guide-nav {
  align-items: center;
  display: flex;
  gap: 20px;
}

.guide-nav a {
  color: var(--muted);
  font-size: .86rem;
  font-weight: 700;
  text-decoration: none;
}

.guide-nav .button {
  color: white;
}

.article-shell {
  margin: 0 auto;
  max-width: 920px;
  padding: 80px 28px 110px;
}

.article-hero {
  border-bottom: 1px solid var(--line);
  margin-bottom: 52px;
  padding-bottom: 48px;
}

.article-hero h1 {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  max-width: 900px;
}

.article-hero > p {
  color: var(--muted);
  font-size: 1.2rem;
  max-width: 760px;
}

.article-meta {
  color: var(--muted);
  font-size: .82rem;
  margin-top: 22px;
}

.article-body {
  font-size: 1.04rem;
}

.article-body h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  margin-top: 58px;
}

.article-body h3 {
  font-size: 1.35rem;
  margin-top: 34px;
}

.article-body p,
.article-body li {
  color: #354239;
}

.article-body ul,
.article-body ol {
  display: grid;
  gap: 10px;
  padding-left: 24px;
}

.article-callout,
.article-cta {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  margin: 34px 0;
  padding: 24px;
}

.article-callout strong,
.article-callout span {
  display: block;
}

.article-callout span {
  color: var(--muted);
  margin-top: 6px;
}

.article-cta {
  background: var(--green-dark);
  color: white;
  margin-top: 64px;
}

.article-cta p {
  color: #d8e6de;
}

.article-cta .button {
  background: white;
  border-color: white;
  color: var(--green-dark);
}

.related-guides {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
  margin-top: 46px;
  padding-top: 30px;
}

.related-guides a {
  color: var(--green);
  font-weight: 750;
}

@media (max-width: 760px) {
  .locked-report {
    grid-template-columns: 1fr;
  }

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

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

  .guide-grid a,
  .guide-grid a:nth-child(4),
  .guide-grid a:nth-child(5) {
    grid-column: auto;
    min-height: 0;
  }

  .guide-nav a:not(.button) {
    display: none;
  }

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

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

[hidden] {
  display: none !important;
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

.site-header {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1180px;
  padding: 24px 28px;
}

.brand {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
}

.header-actions {
  align-items: center;
  display: flex;
  gap: 12px;
}

.plain-button {
  background: transparent;
  border: 0;
  color: var(--green);
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 800;
  padding: 10px 12px;
}

.plain-button:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.section-shell {
  margin: 0 auto;
  max-width: 1180px;
  padding: 96px 28px;
}

.hero {
  padding-bottom: 76px;
  padding-top: 110px;
}

.deadline-badge {
  background: var(--amber-soft);
  border: 1px solid #e7c49c;
  border-radius: 999px;
  color: var(--amber);
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
  padding: 7px 13px;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--green);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  margin-bottom: 18px;
  text-transform: uppercase;
}

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

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 600;
  letter-spacing: -0.035em;
}

h1 {
  font-size: clamp(3.4rem, 8vw, 7.4rem);
  line-height: 0.98;
  margin-bottom: 30px;
  max-width: 1080px;
}

h2 {
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  line-height: 1.06;
  margin-bottom: 24px;
}

h3 {
  font-size: 1.05rem;
  line-height: 1.3;
}

.hero-copy {
  color: var(--muted);
  font-size: 1.24rem;
  max-width: 700px;
}

.hero-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin: 38px 0 48px;
}

.button {
  background: var(--green);
  border: 1px solid var(--green);
  border-radius: 999px;
  color: white;
  cursor: pointer;
  display: inline-flex;
  font-weight: 750;
  justify-content: center;
  padding: 13px 22px;
  text-decoration: none;
  transition: background 150ms ease, transform 150ms ease;
}

.button:hover {
  background: var(--green-dark);
  transform: translateY(-1px);
}

.button-small {
  padding: 9px 16px;
}

.button-secondary {
  background: transparent;
  color: var(--green);
}

.button-secondary:hover {
  background: var(--green-soft);
}

.text-link {
  color: var(--green);
  font-weight: 750;
  text-underline-offset: 5px;
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.trust-list li::before {
  color: var(--green);
  content: "✓";
  font-weight: 900;
  margin-right: 8px;
}

.problem-strip {
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0 auto;
  max-width: 1180px;
}

.problem-strip > div {
  display: grid;
  gap: 7px;
  padding: 26px 28px;
}

.problem-strip > div + div {
  border-left: 1px solid var(--line);
}

.problem-strip span {
  color: var(--muted);
  font-size: 0.92rem;
}

.demo-section {
  padding-top: 112px;
}

.section-heading,
.result-title {
  align-items: end;
  display: flex;
  gap: 24px;
  justify-content: space-between;
}

.section-heading h2 {
  max-width: 760px;
}

.upload-panel,
.cost-panel,
.result-block,
.pilot {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.pricing {
  align-items: center;
  display: grid;
  gap: 64px;
  grid-template-columns: 1.15fr 0.85fr;
  padding-bottom: 88px;
  padding-top: 88px;
}

.pricing-copy > p {
  color: var(--muted);
  font-size: 1.05rem;
}

.pricing-list {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
}

.pricing-list li {
  list-style: none;
  padding-left: 26px;
  position: relative;
}

.pricing-list li::before {
  color: var(--green);
  content: "\2713";
  font-weight: 900;
  left: 0;
  position: absolute;
}

.price-card {
  background: var(--ink);
  border-radius: 24px;
  box-shadow: var(--shadow);
  color: white;
  display: grid;
  gap: 16px;
  padding: 34px;
}

.price-card > span {
  color: #c8d8d0;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.price-card > strong {
  font-size: clamp(3.2rem, 8vw, 5rem);
  line-height: 1;
}

.price-card > strong small {
  font-size: 0.42em;
  vertical-align: top;
}

.price-card > p,
.price-card > small {
  color: #c8d8d0;
  margin: 0;
}

.price-card .payment-button {
  justify-content: center;
  margin-top: 6px;
}

.payment-status {
  font-size: 0.84rem;
}

.upload-panel {
  padding: 22px;
}

.demo-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
}

.cost-panel {
  margin: 0;
  min-width: 0;
  padding: 18px 22px 20px;
}

.cost-panel legend {
  color: var(--green-dark);
  font-size: 0.84rem;
  font-weight: 850;
  padding: 0 8px;
}

.cost-panel > p {
  color: var(--muted);
  font-size: 0.76rem;
  margin: 12px 0 0;
}

.cost-fields {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cost-fields label {
  color: var(--muted);
  display: grid;
  font-size: 0.75rem;
  font-weight: 750;
  gap: 5px;
}

.cost-fields input,
.cost-fields select {
  background: white;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  min-width: 0;
  padding: 10px 11px;
  width: 100%;
}

.cost-fields input:focus,
.cost-fields select:focus {
  border-color: var(--green);
  outline: 3px solid var(--green-soft);
}

.file-drop {
  align-items: center;
  border: 1px dashed #a5aca6;
  border-radius: 16px;
  cursor: pointer;
  display: flex;
  gap: 18px;
  padding: 28px;
}

.file-drop:hover {
  background: #faf8f1;
}

.file-drop input {
  height: 1px;
  opacity: 0;
  position: absolute;
  width: 1px;
}

.file-drop span:nth-child(2) {
  display: grid;
  gap: 4px;
}

.file-drop small,
.privacy-note,
.result-title span,
.form-note {
  color: var(--muted);
}

.file-icon {
  align-items: center;
  background: var(--green-soft);
  border-radius: 12px;
  color: var(--green-dark);
  display: flex;
  font-size: 0.75rem;
  font-weight: 900;
  height: 52px;
  justify-content: center;
  letter-spacing: 0.08em;
  width: 52px;
}

.privacy-note {
  font-size: 0.86rem;
  margin: 12px 4px 0;
}

.results {
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: 24px;
}

.summary-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(4, 1fr);
}

.summary-card {
  background: var(--green-soft);
  border-radius: 18px;
  display: grid;
  gap: 6px;
  padding: 20px;
}

.summary-card span {
  color: var(--green-dark);
  font-size: 0.82rem;
  font-weight: 700;
}

.summary-card strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.5rem;
}

.summary-card-alert {
  background: var(--amber-soft);
}

.summary-card-alert span {
  color: var(--amber);
}

.summary-card-money {
  background: #dce8f2;
}

.summary-card-money span {
  color: #244e71;
}

.summary-card-money strong {
  font-size: clamp(1.45rem, 2.4vw, 2.5rem);
}

.result-block {
  min-width: 0;
  padding: 24px;
}

.result-title {
  align-items: center;
  margin-bottom: 18px;
}

.result-title h3 {
  margin-bottom: 0;
}

.result-title span {
  font-size: 0.82rem;
}

.result-title-actions > div:first-child {
  display: grid;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.mapping-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.mapping-item {
  background: #f2f0e8;
  border-radius: 12px;
  display: grid;
  gap: 3px;
  padding: 13px;
}

.mapping-item strong {
  font-size: 0.9rem;
}

.mapping-item span {
  color: var(--muted);
  font-size: 0.78rem;
}

.mapping-item[data-found="false"] {
  background: var(--amber-soft);
}

.mapping-item[data-found="false"] strong {
  color: var(--amber);
}

.issue-list {
  display: grid;
  gap: 10px;
}

.issue-item {
  align-items: start;
  border-radius: 12px;
  display: grid;
  gap: 5px;
  grid-template-columns: 72px 1fr;
  padding: 13px;
}

.issue-item[data-level="error"] {
  background: var(--red-soft);
}

.issue-item[data-level="warning"] {
  background: var(--amber-soft);
}

.issue-item em {
  font-size: 0.72rem;
  font-style: normal;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.issue-item p {
  margin-bottom: 0;
}

.empty-state {
  color: var(--green-dark);
  margin: 0;
}

.table-wrap {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  font-size: 0.84rem;
  min-width: 1040px;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 11px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.steps {
  padding-bottom: 80px;
}

.scope {
  padding-bottom: 48px;
}

.scope h2 {
  max-width: 860px;
}

.scope-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, 1fr);
}

.scope-grid article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
}

.scope-grid span {
  color: var(--green);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scope-grid h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  font-weight: 500;
  margin: 14px 0 0;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.step-grid article {
  border-top: 1px solid var(--ink);
  padding: 22px 24px 0 0;
}

.step-grid article + article {
  margin-left: 24px;
}

.step-grid span {
  color: var(--green);
  font-size: 0.76rem;
  font-weight: 800;
}

.step-grid h3 {
  margin: 14px 0 8px;
}

.step-grid p {
  color: var(--muted);
}

.pilot {
  display: grid;
  gap: 64px;
  grid-template-columns: 1.1fr 0.9fr;
  margin-bottom: 100px;
  padding: 52px;
}

.pilot > div p {
  color: var(--muted);
  font-size: 1.05rem;
}

.pilot-invite {
  background: white;
  border: 1px solid var(--line);
  border-radius: 16px;
  display: grid;
  gap: 16px;
  padding: 24px;
}

.pilot-invite > strong {
  font-size: 1.05rem;
}

.pilot-invite ol {
  color: var(--muted);
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 20px;
}

.form-note {
  font-size: 0.78rem;
  margin: 0;
}

footer {
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  font-size: 0.8rem;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1180px;
  padding: 28px;
}

footer p {
  margin: 0;
}

footer > div {
  display: grid;
  gap: 8px;
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.legal-page {
  margin: 0 auto;
  max-width: 840px;
  padding: 72px 28px 100px;
}

.legal-page > header {
  border-bottom: 1px solid var(--line);
  margin-bottom: 42px;
  padding-bottom: 28px;
}

.legal-page section {
  scroll-margin-top: 30px;
}

.legal-page section + section {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding-top: 36px;
}

.legal-page p,
.legal-page li {
  color: var(--muted);
}

.legal-page li + li {
  margin-top: 8px;
}

.legal-page .button {
  display: inline-flex;
  margin-top: 18px;
}

.explain-dialog {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  color: var(--ink);
  max-width: 900px;
  padding: 34px;
  width: calc(100% - 36px);
}

.explain-dialog::backdrop {
  background: rgba(16, 28, 21, 0.58);
}

.dialog-heading {
  align-items: start;
  display: flex;
  gap: 24px;
  justify-content: space-between;
}

.dialog-heading h2 {
  font-family: inherit;
  font-size: clamp(1.8rem, 4vw, 3rem);
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}

.dialog-close {
  align-items: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  flex: 0 0 auto;
  font-size: 1.5rem;
  height: 42px;
  justify-content: center;
  line-height: 1;
  width: 42px;
}

.chinese-flow {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr auto 1fr auto 1fr;
}

.chinese-flow > div:not(.flow-arrow) {
  background: #f2f0e8;
  border-radius: 14px;
  display: grid;
  gap: 6px;
  padding: 18px;
}

.chinese-flow span,
.plain-summary {
  color: var(--muted);
}

.flow-arrow {
  align-self: center;
  color: var(--green);
  font-size: 1.4rem;
  font-weight: 900;
}

.plain-summary {
  border-top: 1px solid var(--line);
  margin-top: 24px;
  padding-top: 20px;
}

.plain-summary p:last-child {
  margin-bottom: 0;
}

@media (max-width: 780px) {
  .site-header {
    padding: 18px;
  }

  .header-actions {
    gap: 2px;
  }

  .section-shell {
    padding: 72px 18px;
  }

  .hero {
    padding-top: 72px;
  }

  h1 {
    font-size: clamp(3rem, 15vw, 5rem);
  }

  .problem-strip,
  .demo-grid,
  .summary-grid,
  .scope-grid,
  .step-grid,
  .pricing,
  .pilot {
    grid-template-columns: 1fr;
  }

  .problem-strip > div + div {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .section-heading,
  .result-title,
  footer {
    align-items: start;
    flex-direction: column;
  }

  .section-heading {
    display: flex;
  }

  .download-actions {
    justify-content: flex-start;
  }

  .step-grid article + article {
    margin-left: 0;
    margin-top: 28px;
  }

  .pilot {
    gap: 32px;
    margin-bottom: 64px;
    padding: 28px;
  }

  footer {
    gap: 8px;
  }

  .explain-dialog {
    padding: 24px;
  }

  .chinese-flow {
    grid-template-columns: 1fr;
  }

  .flow-arrow {
    justify-self: center;
    transform: rotate(90deg);
  }
}

@media (max-width: 520px) {
  .header-actions .button {
    display: none;
  }

  .cost-fields {
    grid-template-columns: 1fr;
  }

  .download-actions {
    display: grid;
    width: 100%;
  }

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