.qai-knowledge {
  --qai-ink: #17213a;
  --qai-muted: #5c667d;
  --qai-paper: #f5f6fa;
  --qai-card: #ffffff;
  --qai-line: #dfe3ec;
  --qai-brand: #5b50e6;
  --qai-brand-dark: #4136b8;
  --qai-accent: #0c9b7c;
  --qai-soft: #eeecff;
  min-height: 100vh;
  margin: 0;
  overflow-x: clip;
  background: var(--qai-paper);
  color: var(--qai-ink);
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.qai-knowledge,
.qai-knowledge * {
  box-sizing: border-box;
}

.qai-knowledge [hidden] {
  display: none !important;
}

.qai-knowledge a {
  color: var(--qai-brand-dark);
  text-decoration: none;
}

.qai-knowledge a:hover {
  text-decoration: underline;
}

.qai-knowledge button,
.qai-knowledge input {
  font: inherit;
}

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

.qai-knowledge a:focus-visible,
.qai-knowledge button:focus-visible,
.qai-knowledge input:focus-visible {
  outline: 3px solid rgba(91, 80, 230, 0.32);
  outline-offset: 3px;
}

.qai-shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.qai-skip {
  position: fixed;
  z-index: 20;
  top: 10px;
  left: 10px;
  padding: 8px 14px;
  transform: translateY(-160%);
  border-radius: 8px;
  background: var(--qai-ink);
  color: #fff !important;
}

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

.qai-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 0;
}

.qai-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--qai-ink) !important;
  font-weight: 700;
}

.qai-brand:hover {
  text-decoration: none !important;
}

.qai-brand__mark {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 4px 12px;
  border-radius: 10px;
  background: var(--qai-ink);
  color: #fff;
  letter-spacing: 0.02em;
}

.qai-brand__section {
  color: var(--qai-muted);
  font-size: 14px;
  font-weight: 600;
}

.qai-text-link {
  font-size: 14px;
  font-weight: 650;
}

.qai-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(240px, 0.65fr);
  gap: 36px;
  align-items: end;
  padding: clamp(36px, 7vw, 74px) 0 38px;
}

.qai-hero::before {
  position: absolute;
  z-index: 0;
  top: 22px;
  right: 4%;
  width: 160px;
  height: 160px;
  border: 32px solid var(--qai-soft);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.qai-hero > * {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.qai-eyebrow {
  margin: 0 0 12px;
  color: var(--qai-brand-dark);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.qai-hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(32px, 5.5vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.035em;
}

.qai-hero__lead {
  max-width: 690px;
  margin: 20px 0 0;
  color: var(--qai-muted);
  font-size: 17px;
}

.qai-hero__note {
  margin: 0 0 6px;
  padding: 18px 0 18px 20px;
  border-left: 3px solid var(--qai-accent);
  color: var(--qai-muted);
  font-size: 14px;
}

.qai-controls {
  padding: 22px;
  border: 1px solid var(--qai-line);
  border-radius: 18px;
  background: var(--qai-card);
}

.qai-search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.qai-search-field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.qai-search-field label,
.qai-filter-label {
  color: var(--qai-muted);
  font-size: 13px;
  font-weight: 650;
}

.qai-search-field input {
  width: 100%;
  min-width: 0;
  min-height: 46px;
  padding: 10px 14px;
  border: 1px solid #cbd1df;
  border-radius: 10px;
  background: #fff;
  color: var(--qai-ink);
}

.qai-search-field input::placeholder {
  color: #7a8396;
}

.qai-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 8px 15px;
  border: 1px solid var(--qai-line);
  border-radius: 10px;
  background: #fff;
  color: var(--qai-ink);
  cursor: pointer;
  font-size: 14px;
  font-weight: 650;
}

.qai-button:hover {
  border-color: var(--qai-brand);
  color: var(--qai-brand-dark);
}

.qai-button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.qai-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 18px;
}

.qai-filter-label {
  margin-right: 4px;
}

.qai-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.qai-chip {
  min-height: 36px;
  padding: 5px 13px;
  border: 1px solid var(--qai-line);
  border-radius: 999px;
  background: #fff;
  color: var(--qai-muted);
  cursor: pointer;
  font-size: 14px;
}

.qai-chip:hover,
.qai-chip.is-active {
  border-color: var(--qai-brand);
  background: var(--qai-soft);
  color: var(--qai-brand-dark);
}

.qai-list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 30px 0 14px;
}

.qai-list-head h2 {
  margin: 0;
  font-size: 20px;
}

.qai-result-count {
  margin: 0;
  color: var(--qai-muted);
  font-size: 14px;
}

.qai-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.qai-card {
  display: flex;
  min-width: 0;
  min-height: 310px;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--qai-line);
  border-radius: 16px;
  background: var(--qai-card);
  color: var(--qai-ink) !important;
  transition: border-color 160ms ease, transform 160ms ease;
}

.qai-card:hover {
  transform: translateY(-3px);
  border-color: var(--qai-brand);
  text-decoration: none !important;
}

.qai-card__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}

.qai-category {
  color: var(--qai-brand-dark);
  font-size: 13px;
  font-weight: 700;
}

.qai-updated {
  color: var(--qai-muted);
  font-size: 12px;
}

.qai-card__title {
  margin: 20px 0 10px;
  font-size: 22px;
  line-height: 1.42;
  overflow-wrap: anywhere;
}

.qai-card__summary {
  margin: 0 0 18px;
  color: var(--qai-muted);
  font-size: 14px;
}

.qai-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.qai-tag {
  padding: 2px 8px;
  border-radius: 6px;
  background: #f0f2f7;
  color: var(--qai-muted);
  font-size: 12px;
}

.qai-card__more {
  margin-top: 20px;
  color: var(--qai-brand-dark);
  font-size: 14px;
  font-weight: 700;
}

.qai-card__more::after,
.qai-text-link::after {
  margin-left: 6px;
  content: "→";
}

.qai-empty {
  padding: 46px 24px;
  border: 1px dashed #b9c0d0;
  border-radius: 16px;
  background: #fff;
  text-align: center;
}

.qai-empty h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.qai-empty p {
  margin: 0 0 20px;
  color: var(--qai-muted);
}

.qai-noscript {
  margin-top: 24px;
  padding: 20px;
  border: 1px solid var(--qai-line);
  border-radius: 12px;
  background: #fff;
}

.qai-noscript ul {
  margin-bottom: 0;
}

.qai-footer {
  margin-top: 54px;
  padding: 26px 0 34px;
  border-top: 1px solid var(--qai-line);
  color: var(--qai-muted);
  font-size: 13px;
}

.qai-footer p {
  margin: 0;
}

.qai-footer p + p {
  margin-top: 6px;
}

.qai-article-header {
  padding: 34px 0 24px;
}

.qai-back-link {
  display: inline-flex;
  align-items: center;
  margin-bottom: 30px;
  font-size: 14px;
  font-weight: 650;
}

.qai-back-link::before {
  margin-right: 7px;
  content: "←";
}

.qai-article-header__inner,
.qai-article-wrap,
.qai-article-after {
  width: min(900px, 100%);
  margin: 0 auto;
}

.qai-article-header h1 {
  margin: 12px 0 18px;
  font-size: clamp(30px, 5.4vw, 48px);
  line-height: 1.25;
  letter-spacing: -0.025em;
  overflow-wrap: anywhere;
}

.qai-article-deck {
  max-width: 760px;
  margin: 0;
  color: var(--qai-muted);
  font-size: 17px;
}

.qai-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 20px;
  color: var(--qai-muted);
  font-size: 13px;
}

.qai-article {
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid var(--qai-line);
  border-radius: 20px;
  background: var(--qai-card);
}

.qai-article-content {
  min-width: 0;
  font-size: 16px;
}

.qai-article-content section {
  margin: 0 0 36px;
}

.qai-article-content h2 {
  margin: 0 0 15px;
  font-size: 25px;
  line-height: 1.4;
}

.qai-article-content h3 {
  margin: 26px 0 10px;
  font-size: 19px;
  line-height: 1.45;
}

.qai-article-content p {
  margin: 0 0 15px;
}

.qai-article-content ul,
.qai-article-content ol {
  margin: 10px 0 18px;
  padding-left: 1.4em;
}

.qai-article-content li + li {
  margin-top: 7px;
}

.qai-article-content strong {
  font-weight: 700;
}

.qai-callout {
  margin: 18px 0;
  padding: 16px 18px;
  border-left: 4px solid var(--qai-accent);
  border-radius: 0 10px 10px 0;
  background: #edf8f5;
}

.qai-callout p:last-child {
  margin-bottom: 0;
}

.qai-table-wrap {
  max-width: 100%;
  margin: 16px 0 22px;
  overflow-x: auto;
  border: 1px solid var(--qai-line);
  border-radius: 12px;
  -webkit-overflow-scrolling: touch;
}

.qai-table-wrap table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  background: #fff;
  font-size: 14px;
  line-height: 1.6;
}

.qai-table-wrap th,
.qai-table-wrap td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--qai-line);
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
}

.qai-table-wrap th {
  background: #f0f1f7;
  color: var(--qai-ink);
  font-weight: 700;
}

.qai-table-wrap tr:last-child td {
  border-bottom: 0;
}

.qai-code-block {
  min-width: 0;
  margin: 18px 0 24px;
  overflow: hidden;
  border: 1px solid var(--qai-line);
  border-radius: 12px;
  background: #f7f8fb;
}

.qai-code-block__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 12px 9px 16px;
  border-bottom: 1px solid var(--qai-line);
}

.qai-code-block__label {
  color: var(--qai-muted);
  font-size: 13px;
  font-weight: 650;
}

.qai-copy-button {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 5px 11px;
  border: 1px solid #c9c4fb;
  border-radius: 8px;
  background: #fff;
  color: var(--qai-brand-dark);
  cursor: pointer;
  font-size: 13px;
  font-weight: 650;
}

.qai-copy-button:hover {
  background: var(--qai-soft);
}

.qai-code-block pre {
  max-width: 100%;
  margin: 0;
  padding: 18px;
  overflow-x: auto;
  color: #26324b;
  font-family: Consolas, "Courier New", "Microsoft YaHei", monospace;
  font-size: 13px;
  line-height: 1.75;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.qai-code-block code {
  font: inherit;
}

.qai-prompt-card {
  margin: 28px 0;
  padding-top: 4px;
  border-top: 2px solid var(--qai-soft);
}

.qai-article-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  margin-top: 34px;
  padding: 26px;
  border-radius: 16px;
  background: var(--qai-ink);
  color: #fff;
}

.qai-article-cta h2 {
  margin: 0 0 6px;
  color: #fff;
  font-size: 21px;
}

.qai-article-cta p {
  margin: 0;
  color: #d8ddec;
  font-size: 14px;
}

.qai-cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 18px;
  border-radius: 10px;
  background: #fff;
  color: var(--qai-ink) !important;
  font-weight: 750;
  white-space: nowrap;
}

.qai-cta-button:hover {
  background: var(--qai-soft);
  text-decoration: none !important;
}

.qai-related {
  margin-top: 34px;
}

.qai-related h2 {
  margin: 0 0 14px;
  font-size: 21px;
}

.qai-related__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.qai-related__item {
  display: flex;
  min-width: 0;
  min-height: 136px;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--qai-line);
  border-radius: 12px;
  background: #fff;
  color: var(--qai-ink) !important;
}

.qai-related__item:hover {
  border-color: var(--qai-brand);
  text-decoration: none !important;
}

.qai-related__category {
  color: var(--qai-brand-dark);
  font-size: 12px;
}

.qai-related__title {
  font-size: 15px;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.qai-pager {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.qai-pager__link {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 5px;
  padding: 17px 18px;
  border: 1px solid var(--qai-line);
  border-radius: 12px;
  background: #fff;
  color: var(--qai-ink) !important;
}

.qai-pager__link--next {
  text-align: right;
}

.qai-pager__label {
  color: var(--qai-muted);
  font-size: 12px;
}

.qai-pager__title {
  font-size: 14px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.qai-source-note {
  margin-top: 24px;
  color: var(--qai-muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  .qai-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .qai-hero {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .qai-hero__note {
    max-width: 680px;
  }
}

@media (max-width: 620px) {
  .qai-shell {
    width: min(100% - 28px, 1120px);
  }

  .qai-topbar {
    padding: 16px 0;
  }

  .qai-brand__section {
    display: none;
  }

  .qai-hero {
    padding-top: 30px;
  }

  .qai-hero::before {
    width: 100px;
    height: 100px;
    border-width: 22px;
  }

  .qai-controls {
    padding: 16px;
  }

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

  .qai-search-row .qai-button {
    justify-self: start;
  }

  .qai-list-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .qai-grid,
  .qai-related__grid,
  .qai-pager {
    grid-template-columns: 1fr;
  }

  .qai-card {
    min-height: 0;
  }

  .qai-article-header {
    padding-top: 22px;
  }

  .qai-back-link {
    margin-bottom: 24px;
  }

  .qai-article {
    padding: 22px 18px;
    border-radius: 14px;
  }

  .qai-article-content h2 {
    font-size: 22px;
  }

  .qai-article-cta {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .qai-cta-button {
    justify-self: start;
    white-space: normal;
  }

  .qai-pager__link--next {
    text-align: left;
  }

  .qai-code-block__head {
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .qai-card {
    transition: none;
  }

  .qai-card:hover {
    transform: none;
  }
}