.usecase-main {
  padding: 36px 0 40px;
}

.usecase-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(34px, 7vw, 90px);
  padding: clamp(52px, 7vw, 92px) 0 60px;
  align-items: end;
}

.usecase-hero h1 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(48px, 7.4vw, 96px);
  letter-spacing: -0.065em;
  line-height: 0.96;
}

.usecase-hero h1 em {
  color: var(--blue);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
}

.usecase-summary {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
}

.usecase-summary > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.7;
}

.usecase-meta {
  display: grid;
  gap: 9px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.usecase-meta li {
  display: flex;
  gap: 9px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.usecase-meta li::before {
  color: var(--blue);
  content: "→";
  font-weight: 800;
}

.editorial-shell {
  display: grid;
  grid-template-columns: minmax(240px, 0.62fr) minmax(420px, 1.38fr);
  gap: clamp(38px, 7vw, 92px);
  padding: 56px 0;
  border-top: 1px solid var(--line);
}

.editorial-shell > header {
  align-self: start;
}

.editorial-shell h2 {
  margin: 0;
  font-size: clamp(34px, 4.5vw, 58px);
  letter-spacing: -0.055em;
  line-height: 1.04;
}

.editorial-body h3 {
  margin: 30px 0 10px;
  font-size: 19px;
  letter-spacing: -0.025em;
}

.editorial-body h3:first-child {
  margin-top: 0;
}

.editorial-body p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.78;
}

.editorial-body p + p {
  margin-top: 13px;
}

.workflow-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  counter-reset: workflow;
  list-style: none;
}

.workflow-list li {
  position: relative;
  padding: 0 0 28px 50px;
  counter-increment: workflow;
}

.workflow-list li::before {
  position: absolute;
  top: -7px;
  left: 0;
  display: grid;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--acid);
  content: counter(workflow, decimal-leading-zero);
  font-size: 10px;
  font-weight: 900;
  place-items: center;
}

.workflow-list strong {
  display: block;
  margin-bottom: 7px;
  font-size: 16px;
}

.workflow-list p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.68;
}

.check-list {
  display: grid;
  gap: 11px;
  margin: 20px 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 13px 15px 13px 42px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(255, 254, 249, 0.58);
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}

.check-list li::before {
  position: absolute;
  top: 13px;
  left: 15px;
  color: var(--blue);
  content: "✓";
  font-weight: 900;
}

.article-table {
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  font-size: 13px;
}

.article-table th,
.article-table td {
  padding: 13px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.article-table th {
  color: var(--blue);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-table td {
  color: var(--ink-soft);
  line-height: 1.6;
}

.callout {
  margin: 28px 0;
  padding: 20px;
  border-radius: 14px;
  background: rgba(49, 88, 255, 0.07);
}

.callout strong {
  display: block;
  margin-bottom: 7px;
}

.callout p {
  font-size: 14px;
  line-height: 1.65;
}

.choice-grid {
  display: grid;
  gap: 10px;
}

.choice-option {
  display: grid;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  grid-template-columns: 20px 1fr;
  gap: 12px;
  background: var(--white);
}

.choice-option:has(input:checked) {
  border-color: var(--blue);
  background: rgba(49, 88, 255, 0.06);
}

.choice-option input {
  width: 16px;
  height: 16px;
  margin: 2px 0 0;
  accent-color: var(--blue);
}

.choice-option strong {
  display: block;
  margin-bottom: 5px;
  font-size: 15px;
}

.choice-option span {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.choice-result {
  margin-top: 16px;
  padding: 16px;
  border-radius: 11px;
  background: rgba(223, 255, 100, 0.4);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.65;
}

.readiness-grid {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.readiness-row {
  display: grid;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 28px 1fr;
  gap: 10px;
}

.readiness-row > span {
  display: grid;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 900;
  place-items: center;
}

.readiness-pass {
  background: var(--acid);
  color: var(--ink);
}

.readiness-warn {
  background: rgba(255, 139, 95, 0.22);
  color: #9d3d24;
}

.readiness-row strong {
  display: block;
  margin-bottom: 3px;
  font-size: 14px;
}

.readiness-row p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.55;
}

.result-card .readiness-row {
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

.result-card .readiness-row strong {
  color: var(--white);
}

.result-card .readiness-row p {
  color: rgba(255, 255, 255, 0.57);
}

.result-tool-button {
  width: 100%;
  min-height: 46px;
  margin-top: 18px;
  padding: 0 16px;
  border: 0;
  border-radius: 10px;
  background: var(--acid);
  color: var(--ink);
  cursor: pointer;
  font-size: 11px;
  font-weight: 900;
}

.result-tool-button:hover {
  filter: brightness(1.03);
}

.result-tool-button:disabled {
  cursor: wait;
  opacity: 0.6;
}

.result-tool-note {
  margin: 12px 0 0;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.07);
  color: rgba(255, 255, 255, 0.66);
  font-size: 11px;
  line-height: 1.55;
}

.file-selection-status {
  margin: 12px 0 0;
  padding: 10px 12px;
  border-radius: 9px;
  background: rgba(49, 88, 255, 0.07);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 650;
  line-height: 1.55;
}

.text-focus-preview {
  display: grid;
  gap: 9px;
  margin-bottom: 20px;
}

.text-source-hit {
  display: block;
  width: 100%;
  height: 220px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 13px;
  background:
    linear-gradient(45deg, #34342f 25%, transparent 25%),
    linear-gradient(-45deg, #34342f 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #34342f 75%),
    linear-gradient(-45deg, transparent 75%, #34342f 75%),
    #252521;
  background-position:
    0 0,
    0 10px,
    10px -10px,
    -10px 0;
  background-size: 20px 20px;
  cursor: crosshair;
  object-fit: contain;
}

.text-focus-hint {
  margin: 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
  line-height: 1.5;
}

.text-crop-frame {
  display: grid;
  overflow: hidden;
  min-height: 150px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 11px;
  background: #0e0e0c;
  place-items: center;
}

.text-crop-frame canvas {
  display: block;
  width: min(100%, 360px);
  height: auto;
  border-radius: 5px;
  image-rendering: auto;
}

.about-lede {
  max-width: 820px;
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.6;
}

.about-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 58px 0 88px;
}

.about-principle {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
}

.about-principle span {
  color: var(--blue);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 13px;
  font-style: italic;
}

.about-principle h2 {
  margin: 32px 0 10px;
  font-size: 22px;
  letter-spacing: -0.035em;
}

.about-principle p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.65;
}

.contact-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 28px;
}

.contact-action {
  display: grid;
  gap: 22px;
  min-height: 150px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
  align-content: space-between;
}

.contact-action:hover {
  border-color: var(--blue);
}

.contact-action span {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.5;
}

.contact-action strong {
  color: var(--blue);
  font-size: 15px;
}

.source-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.source-list li {
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(255, 254, 249, 0.62);
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.6;
}

.source-list a {
  color: var(--blue);
  font-weight: 750;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.source-note {
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.6;
}

.content-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0 0 72px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 650;
}

.content-meta a {
  color: var(--blue);
  text-decoration: none;
}

.usecase-cta {
  display: flex;
  margin: 14px 0 100px;
  padding: clamp(28px, 5vw, 52px);
  border-radius: 24px;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  background: var(--ink);
  color: var(--white);
}

.usecase-cta h2 {
  max-width: 630px;
  margin: 0;
  font-size: clamp(30px, 4.5vw, 52px);
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.usecase-cta p {
  max-width: 580px;
  margin: 13px 0 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  line-height: 1.65;
}

.usecase-cta a {
  flex: 0 0 auto;
  padding: 14px 20px;
  border-radius: 999px;
  background: var(--acid);
  color: var(--ink);
  font-size: 12px;
  font-weight: 900;
  text-decoration: none;
}

@media (max-width: 900px) {
  .usecase-hero,
  .editorial-shell,
  .about-principles,
  .contact-actions {
    grid-template-columns: 1fr;
  }

  .usecase-cta {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .usecase-main {
    padding-top: 24px;
  }

  .usecase-hero h1 {
    font-size: clamp(48px, 15vw, 72px);
  }

  .article-table {
    display: block;
    overflow-x: auto;
  }
}