:root {
  --bg: #0f1728;
  --bg-alt: #131e34;
  --card: rgba(18, 28, 48, 0.82);
  --card-strong: rgba(24, 36, 61, 0.92);
  --ink: #f3f7ff;
  --muted: #9baecf;
  --line: rgba(149, 179, 255, 0.16);
  --brand: #3bb8ff;
  --brand-deep: #1e7cff;
  --accent: #63f0d6;
  --shadow: 0 24px 64px rgba(0, 0, 0, 0.28);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(59, 184, 255, 0.18), transparent 28%),
    radial-gradient(circle at 92% 12%, rgba(155, 112, 255, 0.18), transparent 24%),
    radial-gradient(circle at 50% 100%, rgba(99, 240, 214, 0.12), transparent 30%),
    linear-gradient(180deg, #0d1526 0%, #121c31 46%, #0b1324 100%);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

h2,
h3,
h4,
label {
  margin: 0 0 10px;
}

p {
  line-height: 1.72;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(14px);
  background: rgba(14, 21, 39, 0.84);
  border-bottom: 1px solid rgba(149, 179, 255, 0.1);
}

.topbar-inner,
.container {
  width: min(1180px, 92vw);
  margin: 0 auto;
}

.topbar-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep) 56%, #8b6bff);
  box-shadow: var(--shadow);
}

.brand-title {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title strong {
  font-size: 1.08rem;
}

.brand-title span,
.muted,
.footer-note {
  color: var(--muted);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav a {
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 700;
  color: var(--muted);
  transition: color 180ms ease, background-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.nav a.active,
.nav a:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep) 60%, #8b6bff);
  box-shadow: 0 14px 30px rgba(30, 124, 255, 0.28);
  transform: translateY(-1px);
}

main {
  padding: 28px 0 54px;
}

body[data-embedded="true"] .topbar {
  display: none;
}

body[data-embedded="true"] main {
  padding-top: 0;
}

.hero {
  border-radius: 34px;
  background: linear-gradient(135deg, rgba(20, 34, 60, 0.96), rgba(19, 102, 198, 0.88) 56%, rgba(117, 88, 255, 0.78));
  color: #fffdf8;
  padding: 38px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(149, 179, 255, 0.16);
}

.hero h1 {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: clamp(2rem, 3vw, 3.2rem);
  letter-spacing: -0.04em;
}

.hero p {
  margin: 12px 0 0;
  max-width: 680px;
}

.section {
  margin-top: 24px;
}

.section-card,
.tool-card,
.model-card,
.detail-block,
.reco-card,
.tool-guide-card,
.stat-card,
.quad,
.grid-cell {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
}

.section-card,
.tool-card,
.model-card,
.reco-card,
.detail-block,
.tool-guide-card,
.stat-card,
.quad,
.grid-cell {
  padding: 18px;
}

.card-grid,
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  align-items: start;
}

.stats-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.stat-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.8rem;
  font-family: "Geist", "Microsoft YaHei", sans-serif;
}

.tag,
.score-badge,
.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.tag {
  background: rgba(59, 184, 255, 0.12);
  color: #9edfff;
}

.score-badge {
  background: rgba(99, 240, 214, 0.12);
  color: var(--accent);
}

.eyebrow {
  margin-bottom: 16px;
  background: rgba(255, 255, 255, 0.14);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.btn,
button {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep) 56%, #8b6bff);
}

.btn.secondary,
button.secondary {
  background: linear-gradient(135deg, #63f0d6, #18baff);
}

.btn.ghost,
button.ghost {
  background: linear-gradient(135deg, #2c3e62, #455c88);
}

.controls {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 12px;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid rgba(149, 179, 255, 0.12);
  border-radius: 14px;
  padding: 12px 14px;
  font: inherit;
  color: var(--ink);
  background: rgba(7, 14, 28, 0.68);
}

textarea {
  min-height: 140px;
  resize: vertical;
  line-height: 1.65;
}

.detail-sections {
  display: grid;
  gap: 14px;
}

.detail-grid,
.matrix-2x2,
.canvas-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.canvas-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.detail-block ul,
.detail-block ol {
  margin: 10px 0 0;
  padding-left: 20px;
  line-height: 1.75;
}

.detail-block p {
  margin: 0 0 10px;
  line-height: 1.75;
}

.tool-card h3,
.model-card h3,
.reco-card h3 {
  margin-top: 12px;
}

.tool-guide-card {
  background: rgba(255, 255, 255, 0.72);
  border: 1px dashed rgba(15, 109, 102, 0.2);
}

.tool-guide-card h4 {
  margin: 0 0 8px;
}

.home-visual-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
  gap: 16px;
  align-items: stretch;
}

.home-usage-card {
  display: grid;
  gap: 16px;
}

.home-usage-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 4px;
}

.home-step-card {
  flex: 1 1 220px;
  min-height: 100%;
  padding: 16px 18px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 249, 242, 0.86));
  border: 1px solid rgba(15, 109, 102, 0.12);
  position: relative;
}

.home-step-card::after {
  content: "";
  position: absolute;
  top: 28px;
  right: -9px;
  width: 18px;
  height: 18px;
  border-top: 2px solid rgba(15, 109, 102, 0.16);
  border-right: 2px solid rgba(15, 109, 102, 0.16);
  transform: rotate(45deg);
}

.home-step-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.home-step-top .diagram-index {
  margin-bottom: 0;
}

.home-step-top h3 {
  margin: 0;
  font-size: 1.08rem;
}

.home-step-card p {
  margin: 0;
  color: var(--muted);
}

.home-step-card:last-child::after {
  display: none;
}

.home-framework-panel {
  display: grid;
  gap: 16px;
  background:
    radial-gradient(circle at top right, rgba(15, 109, 102, 0.08), transparent 38%),
    linear-gradient(180deg, rgba(255, 253, 249, 0.96), rgba(252, 247, 239, 0.9));
}

.home-framework-copy {
  display: grid;
  gap: 8px;
}

.home-framework-grid {
  display: grid;
  gap: 12px;
}

.home-framework-card {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(15, 109, 102, 0.12);
}

.home-framework-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.02rem;
}

.home-framework-card p {
  margin: 0 0 12px;
  color: var(--muted);
}

.home-framework-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.home-framework-tags span {
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(15, 109, 102, 0.09);
  color: var(--brand-deep);
  font-weight: 700;
  font-size: 0.86rem;
}

.tool-overview-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 18px;
  align-items: stretch;
}

.tool-overview-copy {
  display: grid;
  gap: 10px;
}

.tool-overview-copy h3 {
  font-size: clamp(1.25rem, 2vw, 1.8rem);
}

.tool-overview-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tool-overview-points span {
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(15, 109, 102, 0.08);
  color: var(--brand-deep);
  font-weight: 700;
}

.tool-overview-flow {
  display: grid;
  gap: 10px;
}

.tool-overview-flow article {
  padding: 15px 16px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 248, 240, 0.84));
  border: 1px solid rgba(15, 109, 102, 0.12);
}

.tool-overview-flow strong {
  display: block;
  margin-bottom: 6px;
}

.tool-overview-flow p {
  margin: 0;
  color: var(--muted);
}

.tool-showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.tool-split-card {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(260px, 0.95fr);
  gap: 16px;
  align-items: stretch;
}

.tool-card-main,
.tool-card-side,
.tool-mini-panel {
  display: grid;
  gap: 14px;
}

.tool-card-head {
  display: grid;
  gap: 8px;
}

.tool-card-head h3 {
  margin: 0;
  font-size: 1.5rem;
}

.tool-scene-box {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(15, 109, 102, 0.1);
}

.tool-scene-box strong {
  display: block;
  margin-bottom: 6px;
}

.tool-scene-box p {
  margin: 0;
}

.tool-step-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tool-step-chip {
  flex: 1 1 180px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(251, 246, 238, 0.84));
  border: 1px solid rgba(15, 109, 102, 0.12);
}

.tool-step-chip span {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), #157f77);
  color: #fff;
  font-weight: 700;
  flex: 0 0 auto;
}

.tool-step-chip strong {
  font-size: 0.95rem;
}

.tool-mini-panel {
  padding: 16px;
  border-radius: 20px;
  background:
    radial-gradient(circle at top right, rgba(201, 108, 49, 0.08), transparent 36%),
    rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(15, 109, 102, 0.12);
}

.tool-mini-panel h4 {
  margin: 0;
}

.tool-mini-example-grid {
  display: grid;
  gap: 10px;
}

.tool-mini-before,
.tool-mini-after {
  padding: 14px;
  border-radius: 16px;
  min-height: 132px;
}

.tool-mini-before {
  background: rgba(251, 245, 236, 0.9);
  border: 1px solid rgba(31, 47, 66, 0.08);
}

.tool-mini-after {
  background: rgba(15, 109, 102, 0.08);
  border: 1px solid rgba(15, 109, 102, 0.14);
}

.tool-mini-before span,
.tool-mini-after span {
  display: inline-block;
  margin-bottom: 10px;
  font-weight: 700;
}

.tool-mini-before p,
.tool-mini-after p {
  margin: 0;
}

.model-category-layout {
  display: grid;
  grid-template-columns: minmax(280px, 360px) 1fr;
  gap: 18px;
  align-items: start;
}

.category-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  align-items: start;
}

.category-map-intro {
  display: grid;
  gap: 14px;
}

.category-path-list {
  display: grid;
  gap: 12px;
}

.category-path-item {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(15, 109, 102, 0.12);
}

.category-path-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.category-path-item p {
  margin: 0 0 6px;
}

.category-sample-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.category-sample-link {
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(15, 109, 102, 0.1);
  color: var(--brand-deep);
  font-weight: 700;
}

.category-sample-link:hover {
  background: rgba(15, 109, 102, 0.18);
}

.section-card > h2 {
  margin-bottom: 10px;
}

.axis-note {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 0.86rem;
}

.nine-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.grid-editor {
  min-height: 84px;
  border-radius: 12px;
  border: 1px dashed rgba(15, 109, 102, 0.28);
  padding: 8px;
  line-height: 1.5;
  background: rgba(255, 255, 255, 0.72);
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.diagram-shell {
  display: grid;
  gap: 12px;
  padding: 14px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(15, 109, 102, 0.06), rgba(255, 255, 255, 0.6));
  border: 1px solid rgba(15, 109, 102, 0.12);
}

.diagram-grid-2x2,
.diagram-flow,
.diagram-pill-row,
.diagram-nine-grid {
  display: grid;
  gap: 10px;
}

.diagram-grid-2x2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.diagram-flow {
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  align-items: stretch;
}

.diagram-pill-row {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.diagram-nine-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.diagram-node,
.diagram-step,
.diagram-pill,
.diagram-core,
.diagram-spoke,
.diagram-extra {
  padding: 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(29, 39, 51, 0.08);
}

.diagram-node strong,
.diagram-step strong,
.diagram-pill strong {
  display: block;
  margin-bottom: 4px;
}

.diagram-node span,
.diagram-step span,
.diagram-caption {
  color: var(--muted);
  font-size: 0.92rem;
}

.diagram-index {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  margin-bottom: 8px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
}

.diagram-center-grid {
  display: grid;
  grid-template-columns: 1fr minmax(140px, 180px) 1fr;
  grid-template-areas:
    ". top ."
    "left core right"
    ". bottom .";
  gap: 10px;
  align-items: center;
}

.diagram-core {
  grid-area: core;
  text-align: center;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
}

.diagram-top { grid-area: top; }
.diagram-left { grid-area: left; }
.diagram-right { grid-area: right; }
.diagram-bottom { grid-area: bottom; }

.diagram-extra {
  text-align: center;
  background: rgba(201, 108, 49, 0.1);
}

.diagram-bar {
  display: flex;
  min-height: 88px;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid rgba(29, 39, 51, 0.08);
}

.diagram-segment {
  display: grid;
  place-items: center;
  text-align: center;
  gap: 4px;
  padding: 10px;
  color: #fff;
}

.diagram-segment:nth-child(1) { background: linear-gradient(135deg, #0f6d66, #127e75); }
.diagram-segment:nth-child(2) { background: linear-gradient(135deg, #c96c31, #d78652); }
.diagram-segment:nth-child(3) { background: linear-gradient(135deg, #445160, #607182); }

.diagram-segment span {
  font-size: 0.9rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  background: rgba(15, 109, 102, 0.1);
  color: var(--brand-deep);
  padding: 7px 12px;
  font-size: 0.88rem;
}

.pill button,
.danger-btn {
  width: 20px;
  height: 20px;
  padding: 0;
  border-radius: 50%;
  background: #ba4d34;
}

.simple-table {
  width: 100%;
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
}

.simple-table th,
.simple-table td {
  border: 1px solid var(--line);
  padding: 8px;
  text-align: left;
  background: rgba(255, 255, 255, 0.82);
}

.empty-state {
  padding: 32px 20px;
  text-align: center;
}

@media (max-width: 900px) {
  .home-visual-layout,
  .tool-overview-panel,
  .tool-split-card,
  .controls,
  .detail-grid,
  .matrix-2x2,
  .canvas-grid {
    grid-template-columns: 1fr;
  }

  .tool-showcase-grid {
    grid-template-columns: 1fr;
  }

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

  .home-usage-steps {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .diagram-grid-2x2,
  .diagram-nine-grid {
    grid-template-columns: 1fr;
  }

  .diagram-center-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "top"
      "left"
      "core"
      "right"
      "bottom";
  }
}

@media (max-width: 760px) {
  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 0;
  }

  .nav {
    width: 100%;
  }

  .nav a {
    flex: 1 1 auto;
    text-align: center;
  }

  .hero {
    padding: 26px;
  }

  .nine-grid {
    grid-template-columns: 1fr;
  }

  .home-usage-steps {
    grid-template-columns: 1fr;
  }

  .home-step-card::after {
    display: none;
  }
}