:root {
  --page: #fbfcff;
  --surface: #ffffff;
  --ink: #111318;
  --muted: #667085;
  --line: #dbe3ef;
  --line-strong: #b9c6d7;
  --blue: #246bfe;
  --teal: #00a7a0;
  --coral: #ff5a52;
  --gold: #f0a400;
  --green: #18a06f;
  --shadow: 0 24px 80px rgba(28, 45, 75, 0.12);
  --soft-shadow: 0 12px 40px rgba(28, 45, 75, 0.08);
  --radius: 8px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(36, 107, 254, 0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(0, 167, 160, 0.025) 1px, transparent 1px),
    var(--page);
  background-size: 34px 34px;
  font-family:
    "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial,
    sans-serif;
  letter-spacing: 0;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 36px;
  border-bottom: 1px solid rgba(219, 227, 239, 0.82);
  background: rgba(251, 252, 255, 0.88);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: max-content;
  font-size: 18px;
  font-weight: 800;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: white;
  background: var(--ink);
  border: 2px solid var(--coral);
  border-radius: var(--radius);
  box-shadow: 4px 4px 0 var(--teal);
  font-size: 17px;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 28px;
  color: #3e4a5b;
  font-size: 14px;
  font-weight: 650;
}

.nav-links a {
  padding: 10px 2px;
}

.nav-links a:hover {
  color: var(--blue);
}

.header-action,
.source-card a,
.code-tabs button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.header-action {
  min-width: 118px;
  height: 42px;
  padding: 0 16px;
  color: white;
  background: var(--blue);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 750;
  box-shadow: 0 12px 28px rgba(36, 107, 254, 0.24);
}

.header-action svg,
.search-row svg,
.code-tabs button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

main {
  overflow: hidden;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, 520px);
  align-items: center;
  gap: 56px;
  max-width: var(--max-width);
  min-height: auto;
  margin: 0 auto;
  padding: 54px 24px 44px;
}

.hero-copy h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(56px, 7.4vw, 92px);
  line-height: 1.02;
  font-weight: 900;
  letter-spacing: 0;
  word-break: keep-all;
}

.hero-copy,
.hero-visual,
.search-workbench,
.search-row,
.quick-tags,
.visual-meter,
.source-card,
.template-card,
.code-panel {
  min-width: 0;
}

.hero-subtitle {
  max-width: 680px;
  margin: 26px 0 36px;
  color: #384457;
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.56;
  font-weight: 520;
}

.search-workbench {
  width: min(100%, 690px);
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--soft-shadow);
}

.search-workbench label {
  display: block;
  margin-bottom: 10px;
  color: #1d2736;
  font-size: 13px;
  font-weight: 800;
}

.search-row {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  padding: 0 10px 0 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #fbfdff;
}

.search-row input {
  width: 100%;
  min-width: 0;
  color: var(--ink);
  background: transparent;
  border: 0;
  outline: 0;
  font-size: 16px;
  font-weight: 540;
}

.search-row input::placeholder {
  color: #8793a6;
}

.clear-button {
  min-width: 58px;
  height: 36px;
  color: #384457;
  background: #eef4fb;
  border: 1px solid #dbe5f0;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 750;
}

.quick-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.api-status {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 720;
}

.quick-tags button,
.category-tabs button {
  min-height: 38px;
  color: #263244;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 750;
}

.quick-tags button {
  padding: 0 13px;
}

.quick-tags button:hover,
.category-tabs button:hover,
.category-tabs button.active {
  color: var(--blue);
  border-color: rgba(36, 107, 254, 0.36);
  background: #eef5ff;
}

.hero-visual {
  position: relative;
  align-self: stretch;
  min-height: 500px;
  border: 1px solid rgba(17, 19, 24, 0.12);
  border-radius: var(--radius);
  background: #f5f8fc;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-visual img {
  max-width: 100%;
  width: 100%;
  height: 100%;
  min-height: 500px;
  object-fit: cover;
  display: block;
}

.visual-meter {
  position: absolute;
  right: 18px;
  bottom: 18px;
  left: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
}

.visual-meter span {
  min-height: 36px;
  display: grid;
  place-items: center;
  color: #1f2937;
  background: #f8fbff;
  border: 1px solid rgba(219, 227, 239, 0.75);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 84px 24px;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 28px;
}

.section-index {
  display: inline-grid;
  place-items: center;
  flex: 0 0 48px;
  height: 32px;
  color: white;
  background: var(--ink);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 850;
}

.section-heading h2,
.note-section h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: 0;
}

.section-heading p,
.note-section p {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

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

.source-section {
  padding-top: 64px;
}

.source-card,
.template-card,
.flow-step,
.code-panel,
.note-section,
.public-interest-section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--soft-shadow);
}

.source-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 340px;
  padding: 20px;
  overflow: hidden;
}

.source-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: var(--accent);
}

.source-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
}

.source-card h3 {
  margin: 22px 0 12px;
  font-size: 23px;
  line-height: 1.16;
}

.source-card p {
  margin: 0;
  color: #4b5870;
  font-size: 15px;
  line-height: 1.65;
}

.source-card ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 22px;
  padding: 0;
  list-style: none;
}

.source-card li {
  color: #293548;
  font-size: 14px;
  font-weight: 650;
}

.source-card li::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  background: var(--accent);
  border-radius: 50%;
  vertical-align: 1px;
}

.source-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  margin-top: auto;
}

.source-card a,
.source-actions button {
  width: 100%;
  min-height: 42px;
  color: var(--ink);
  background: transparent;
  border: 1px solid #cfd9e6;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 850;
  cursor: pointer;
}

.source-actions button {
  min-width: 86px;
  padding: 0 12px;
}

.source-card a:hover,
.source-actions button:hover {
  color: white;
  background: var(--ink);
  border-color: var(--ink);
}

.split-heading {
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.heading-left {
  display: flex;
  gap: 18px;
}

.result-count {
  display: inline-grid;
  place-items: center;
  width: 112px;
  height: 72px;
  color: white;
  background: var(--ink);
  border-radius: var(--radius);
  text-align: center;
}

.result-count strong {
  display: block;
  font-size: 28px;
  line-height: 1;
}

.result-count span {
  color: #d9e3f2;
  font-size: 12px;
  font-weight: 750;
}

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.library-toolbar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.library-toolbar label {
  display: grid;
  gap: 7px;
  color: #253044;
  font-size: 13px;
  font-weight: 820;
}

.library-toolbar select {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  color: var(--ink);
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 720;
}

.category-tabs button {
  min-width: 74px;
  padding: 0 16px;
}

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

.template-card {
  display: flex;
  flex-direction: column;
  min-height: 330px;
  padding: 18px;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.prompt-card {
  min-height: 420px;
}

.prompt-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  margin-bottom: 14px;
  border: 1px solid #e2eaf5;
  border-radius: var(--radius);
  background: #f5f8fc;
}

.template-card:hover {
  transform: translateY(-3px);
  border-color: #c2d2e6;
  box-shadow: var(--shadow);
}

.template-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.template-tag {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 10px;
  color: var(--tag-color, var(--blue));
  background: var(--tag-bg, #eef5ff);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 850;
}

.language-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 28px;
  padding: 0 9px;
  color: #46546a;
  background: #f6f9fd;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 850;
}

.favorite-button,
.copy-button {
  display: inline-grid;
  place-items: center;
  border-radius: var(--radius);
}

.favorite-button {
  width: 32px;
  height: 32px;
  color: #8390a3;
  background: #f6f9fd;
  border: 1px solid var(--line);
}

.favorite-button svg,
.copy-button svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.favorite-button.active {
  color: white;
  background: var(--coral);
  border-color: var(--coral);
}

.template-card h3 {
  margin: 0 0 10px;
  font-size: 21px;
  line-height: 1.2;
}

.template-card p {
  margin: 0 0 16px;
  color: #566277;
  font-size: 14px;
  line-height: 1.62;
}

.prompt-meta {
  min-height: 36px;
}

.prompt-preview {
  flex: 1;
  min-height: 116px;
  padding: 13px;
  color: #303b4e;
  background: #f7faff;
  border: 1px solid #e2eaf5;
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.58;
  white-space: pre-wrap;
  overflow: hidden;
}

.flag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  min-height: 28px;
  margin-top: 12px;
}

.flag-row span {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 8px;
  color: #536178;
  background: #f8fbff;
  border: 1px solid #e2eaf5;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 780;
}

.card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}

.source-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
}

.source-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 72px;
  height: 38px;
  color: #2c394c;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  justify-content: center;
  font-size: 13px;
  font-weight: 820;
}

.source-link svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.copy-button {
  grid-template-columns: 16px auto;
  gap: 7px;
  min-width: 82px;
  height: 38px;
  color: white;
  background: var(--ink);
  border: 0;
  font-size: 13px;
  font-weight: 820;
}

.empty-state {
  padding: 28px;
  color: var(--muted);
  background: white;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  text-align: center;
  font-weight: 720;
}

.loading-state,
.offline-panel {
  grid-column: 1 / -1;
  margin: 0;
  padding: 28px;
  color: var(--muted);
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--soft-shadow);
}

.offline-panel h3 {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 22px;
}

.offline-panel p {
  margin: 8px 0;
  line-height: 1.7;
}

.offline-panel pre {
  margin: 14px 0;
  padding: 14px;
  background: #111318;
  border-radius: var(--radius);
}

.load-more-button {
  display: block;
  width: min(280px, 100%);
  height: 44px;
  margin: 24px auto 0;
  color: white;
  background: var(--ink);
  border: 0;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 850;
}

.load-more-button:disabled {
  opacity: 0.55;
  cursor: progress;
}

.api-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: 18px;
  align-items: stretch;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.flow-step {
  min-height: 180px;
  padding: 20px;
}

.flow-step span {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  margin-bottom: 18px;
  color: white;
  background: var(--blue);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 850;
}

.flow-step:nth-child(2) span {
  background: var(--teal);
}

.flow-step:nth-child(3) span {
  background: var(--coral);
}

.flow-step:nth-child(4) span {
  background: var(--gold);
}

.flow-step strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}

.flow-step p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.64;
}

.code-panel {
  overflow: hidden;
  background: #111318;
  border-color: #111318;
  box-shadow: 0 28px 90px rgba(17, 19, 24, 0.18);
}

.code-tabs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  color: #e9eef7;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.code-tabs span {
  font-size: 13px;
  font-weight: 830;
}

.code-tabs button {
  min-width: 76px;
  height: 34px;
  color: #111318;
  background: #f8fbff;
  border: 0;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 820;
}

pre {
  margin: 0;
  padding: 22px;
  overflow-x: auto;
}

code {
  color: #e5edf9;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 14px;
  line-height: 1.72;
}

.note-section,
.public-interest-section {
  padding: 34px;
}

.note-section h2,
.public-interest-section h2 {
  font-size: clamp(28px, 3vw, 40px);
}

.public-interest-section {
  margin-bottom: 38px;
}

.public-interest-copy {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 18px;
  align-items: flex-start;
}

.public-interest-section p {
  max-width: 920px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.72;
}

.public-interest-section a,
.site-footer a {
  color: var(--ink);
  font-weight: 850;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 30px 24px 44px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 40;
  min-width: 92px;
  padding: 12px 16px;
  color: white;
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-size: 14px;
  font-weight: 780;
  text-align: center;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .site-header {
    padding: 0 22px;
  }

  .nav-links {
    display: none;
  }

  .hero-section {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 58px;
  }

  .hero-visual,
  .hero-visual img {
    min-height: 420px;
  }

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

  .api-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    min-height: 64px;
    padding: 0 16px;
  }

  .brand {
    font-size: 16px;
  }

  .brand-mark {
    width: 31px;
    height: 31px;
  }

  .header-action {
    display: none;
  }

  .hero-section {
    min-height: auto;
    padding: 46px 16px 44px;
  }

  .hero-copy h1 {
    max-width: 100%;
    font-size: clamp(42px, 12vw, 54px);
    line-height: 1.08;
  }

  .hero-subtitle {
    max-width: min(330px, calc(100vw - 48px));
    margin: 22px 0 28px;
    font-size: 17px;
    overflow-wrap: anywhere;
    word-break: break-all;
  }

  .search-workbench {
    width: 100%;
    max-width: calc(100vw - 32px);
    padding: 14px;
  }

  .search-row {
    grid-template-columns: 22px minmax(0, 1fr);
    min-height: 52px;
  }

  .search-row input {
    font-size: 15px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .clear-button {
    grid-column: 1 / -1;
    width: 100%;
    margin-bottom: 10px;
  }

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

  .quick-tags button {
    width: 100%;
  }

  .hero-visual,
  .hero-visual img {
    max-width: calc(100vw - 32px);
    min-height: 330px;
    width: 100%;
  }

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

  .section {
    padding: 58px 16px;
  }

  .section-heading,
  .heading-left,
  .split-heading,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .result-count {
    width: 100%;
    height: 64px;
    place-items: center;
  }

  .source-grid,
  .template-grid,
  .flow-steps {
    grid-template-columns: 1fr;
  }

  .source-card,
  .template-card {
    min-height: auto;
  }

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

  .library-toolbar {
    grid-template-columns: 1fr;
  }

  .category-tabs button {
    width: 100%;
  }

  .note-section {
    padding: 24px;
  }

  .public-interest-section {
    padding: 24px;
  }

  .public-interest-copy {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}