.detail-hero {
  border-bottom: 1px solid var(--line);
  padding: 28px 0 22px;
  background: linear-gradient(135deg, var(--detail-start), var(--detail-end));
}

.detail-title-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 290px;
  gap: 24px;
  align-items: start;
}

.detail-title-row h1 {
  margin: 9px 0 8px;
  color: var(--navy);
  font-size: clamp(32px, 4.6vw, 50px);
  line-height: 1.06;
  letter-spacing: -0.045em;
  overflow-wrap: anywhere;
}

.detail-title-row p {
  margin: 0;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.6;
}

.download-panel {
  border: 1px solid var(--line);
  border-radius: 15px;
  padding: 13px;
  background: var(--surface);
  box-shadow: var(--soft-shadow);
}

.download-button {
  display: flex;
  width: 100%;
  min-height: 50px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 11px;
  padding: 12px 14px;
  color: var(--primary-button-text);
  background: linear-gradient(90deg, var(--download-start), var(--download-end));
  font-size: 16px;
  font-weight: 900;
  cursor: pointer;
}

.download-button span {
  margin-top: 2px;
  font-size: 11px;
  font-weight: 650;
}

.download-button.disabled {
  color: var(--disabled-text);
  background: var(--disabled-bg);
  cursor: not-allowed;
}

.download-panel small {
  display: block;
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.55;
}

.detail-content > .shell {
  max-width: 1180px;
}

.quick-answer {
  display: flex;
  gap: 12px;
  border: 1px solid var(--info-border);
  border-radius: 14px;
  padding: 15px 16px;
  background: var(--info-bg);
}

.quick-icon {
  flex: 0 0 auto;
  font-size: 25px;
}

.quick-answer strong {
  color: var(--navy);
}

.quick-answer p {
  margin: 4px 0 0;
  color: var(--info-text);
  font-size: 14px;
  line-height: 1.62;
}

.visual-compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 46px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  margin: 24px 0;
}

.compare-card {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--surface);
}

.compare-card.before {
  border-color: var(--danger-border);
  background: var(--danger-bg);
}

.compare-card.after {
  border-color: var(--success-border);
  background: var(--success-bg);
}

.compare-card figcaption {
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 900;
}

.compare-card.before figcaption {
  color: var(--danger-text);
}

.compare-card.after figcaption {
  color: var(--success-text);
}

.compare-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #111111;
}

.compare-arrow {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  color: var(--primary-button-text);
  background: var(--primary-button);
  font-size: 22px;
  font-weight: 900;
}

.feature-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 0 0 22px;
}

.feature-row div {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 13px;
  background: var(--surface-subtle);
}

.feature-row strong {
  display: block;
  color: var(--navy);
  font-size: 13px;
}

.feature-row span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.content-grid {
  display: grid;
  gap: 12px;
  margin: 12px 0;
}

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

.content-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 15px;
  padding: 18px;
  background: var(--surface);
}

.content-card h2 {
  margin: 0 0 10px;
  color: var(--navy);
  font-size: 20px;
  line-height: 1.25;
}

.content-card p,
.content-card li {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.68;
}

.content-card p:last-child {
  margin-bottom: 0;
}

.content-card.safety {
  border-color: var(--success-border);
  background: var(--success-bg);
}

.content-card ul {
  margin: 0;
  padding-left: 20px;
}

.compact-steps {
  margin: 0;
  padding-left: 22px;
}

.compact-steps li + li,
.content-card li + li {
  margin-top: 5px;
}

.file-type-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.file-type-grid span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 10px;
  color: var(--text-muted);
  background: var(--chip-bg);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.4;
}

.solution-feedback {
  margin: 28px 0 0;
  border: 1px solid var(--line);
  border-radius: 15px;
  padding: 17px;
  background: var(--surface-subtle);
}

.solution-feedback h2 {
  margin: 0;
  color: var(--navy);
  font-size: 18px;
}

.solution-feedback-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.solution-feedback button {
  min-height: 44px;
  border: 1px solid var(--input-border);
  border-radius: 10px;
  padding: 9px 13px;
  color: var(--navy);
  background: var(--surface);
  font-size: 13px;
  font-weight: 850;
  cursor: pointer;
}

.solution-feedback button:hover {
  border-color: var(--border-strong);
  background: var(--surface-hover);
}

.solution-feedback-status {
  min-height: 1.4em;
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.related {
  margin-top: 28px;
}

.solution-grid.compact .solution-card {
  min-height: 175px;
}

.ads-enabled .detail-content .ad-slot {
  width: 100%;
}

@media (max-width: 820px) {
  .detail-title-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .visual-compare {
    grid-template-columns: 1fr;
  }

  .compare-arrow {
    margin: auto;
    transform: rotate(90deg);
  }

  .feature-row {
    grid-template-columns: 1fr 1fr;
  }

  .two-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  .detail-hero {
    padding: 20px 0;
  }

  .detail-title-row h1 {
    font-size: clamp(28px, 8.8vw, 36px);
    line-height: 1.14;
    letter-spacing: -0.035em;
  }

  .detail-title-row p {
    font-size: 16px;
    line-height: 1.65;
  }

  .download-panel {
    padding: 14px;
  }

  .download-button {
    min-height: 52px;
  }

  .download-button span,
  .download-panel small {
    font-size: 13px;
    line-height: 1.5;
  }

  .quick-answer {
    gap: 10px;
    padding: 14px;
  }

  .quick-answer p {
    font-size: 15px;
    line-height: 1.68;
  }

  .compare-card figcaption {
    font-size: 14px;
  }

  .feature-row div {
    padding: 14px;
  }

  .feature-row strong {
    font-size: 15px;
  }

  .feature-row span {
    font-size: 13px;
    line-height: 1.5;
  }

  .content-card {
    padding: 16px;
  }

  .content-card h2 {
    font-size: 21px;
  }

  .content-card p,
  .content-card li {
    font-size: 16px;
    line-height: 1.72;
  }

  .compact-steps li + li,
  .content-card li + li {
    margin-top: 8px;
  }

  .file-type-grid span {
    font-size: 13px;
  }
}

@media (max-width: 520px) {
  .feature-row {
    grid-template-columns: 1fr;
  }
}