:root {
  --ppt-bg: #0a0a0f;
  --ppt-panel: rgba(255, 255, 255, 0.04);
  --ppt-panel-strong: rgba(255, 255, 255, 0.07);
  --ppt-border: rgba(255, 255, 255, 0.08);
  --ppt-border-strong: rgba(96, 165, 250, 0.28);
  --ppt-text: #f8fafc;
  --ppt-muted: #94a3b8;
  --ppt-dim: #64748b;
  --ppt-blue: #3b82f6;
  --ppt-cyan: #22d3ee;
  --ppt-violet: #8b5cf6;
  --ppt-shadow: 0 24px 70px rgba(2, 6, 23, 0.38);
}

body {
  overflow-x: hidden;
}

.ppt-hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(520px, 1.12fr);
  gap: 48px;
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 132px 32px 82px;
  position: relative;
}

.ppt-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 20%, rgba(59, 130, 246, 0.18), transparent 28%),
    radial-gradient(circle at 78% 18%, rgba(34, 211, 238, 0.13), transparent 26%),
    linear-gradient(rgba(59, 130, 246, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.06) 1px, transparent 1px);
  background-size: auto, auto, 72px 72px, 72px 72px;
  mask-image: radial-gradient(circle at 50% 42%, rgba(0, 0, 0, 0.9), transparent 78%);
  pointer-events: none;
}

.ppt-hero__content,
.ppt-hero__visual {
  position: relative;
  z-index: 1;
}

.ppt-kicker {
  display: inline-flex;
  align-items: center;
  height: 30px;
  padding: 0 14px;
  border: 1px solid rgba(96, 165, 250, 0.28);
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.1);
  color: #93c5fd;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 22px;
}

.ppt-hero h1 {
  margin: 0 0 20px;
  color: var(--ppt-text);
  font-size: clamp(44px, 6vw, 76px);
  line-height: 1.04;
  letter-spacing: 0;
}

.ppt-hero p {
  margin: 0;
  max-width: 640px;
  color: var(--ppt-muted);
  font-size: 19px;
  line-height: 1.9;
}

.ppt-hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.ppt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.ppt-btn:hover {
  transform: translateY(-2px);
}

.ppt-btn-primary {
  color: white;
  background: linear-gradient(135deg, var(--ppt-blue), var(--ppt-violet));
  box-shadow: 0 14px 34px rgba(59, 130, 246, 0.28);
}

.ppt-btn-secondary {
  color: #dbeafe;
  border: 1px solid rgba(148, 163, 184, 0.22);
  background: rgba(15, 23, 42, 0.52);
}

.ppt-window {
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.76));
  box-shadow: var(--ppt-shadow), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
  overflow: hidden;
}

.ppt-window__bar {
  height: 46px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(2, 6, 23, 0.58);
  color: #94a3b8;
  font-size: 13px;
}

.ppt-window__bar span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #475569;
}

.ppt-window__bar span:nth-child(1) { background: #ef4444; }
.ppt-window__bar span:nth-child(2) { background: #f59e0b; }
.ppt-window__bar span:nth-child(3) { background: #22c55e; }
.ppt-window__bar strong { margin-left: 8px; font-weight: 600; }

.ppt-editor-mock {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr) 142px;
  gap: 14px;
  min-height: 430px;
  padding: 16px;
}

.ppt-slide-list,
.ppt-inspector-mock,
.ppt-canvas-mock {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  background: rgba(2, 6, 23, 0.42);
}

.ppt-slide-list {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 10px;
}

.ppt-slide-thumb {
  min-height: 74px;
  padding: 10px;
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  color: #94a3b8;
}

.ppt-slide-thumb.is-active {
  border-color: rgba(96, 165, 250, 0.45);
  background: rgba(59, 130, 246, 0.12);
  color: #dbeafe;
}

.ppt-slide-thumb span {
  display: block;
  color: #60a5fa;
  font-size: 12px;
  font-weight: 800;
}

.ppt-slide-thumb b {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.4;
}

.ppt-canvas-mock {
  position: relative;
  min-height: 398px;
  padding: 26px;
  overflow: hidden;
  background:
    radial-gradient(circle at 64% 34%, rgba(59, 130, 246, 0.22), transparent 30%),
    linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(30, 41, 59, 0.86));
}

.ppt-canvas-title {
  position: relative;
  z-index: 2;
  max-width: 320px;
  color: #f8fafc;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.25;
}

.ppt-model-card {
  position: absolute;
  right: 34px;
  top: 72px;
  width: 210px;
  height: 190px;
  border: 1px solid rgba(96, 165, 250, 0.26);
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.64);
  overflow: hidden;
}

.ppt-model-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(96, 165, 250, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(96, 165, 250, 0.08) 1px, transparent 1px);
  background-size: 22px 22px;
  transform: perspective(400px) rotateX(58deg) translateY(30px);
}

.ppt-model-cube {
  position: absolute;
  left: 74px;
  top: 54px;
  width: 74px;
  height: 74px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.86), rgba(59, 130, 246, 0.68));
  box-shadow: 0 24px 60px rgba(34, 211, 238, 0.26);
  transform: rotate(18deg) skew(-8deg);
}

.ppt-model-cube span {
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 12px;
}

.ppt-chart-card {
  position: absolute;
  left: 28px;
  bottom: 28px;
  width: 240px;
  height: 116px;
  display: flex;
  align-items: end;
  gap: 12px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.05);
}

.ppt-chart-card i {
  flex: 1;
  border-radius: 999px 999px 8px 8px;
  background: linear-gradient(180deg, #93c5fd, #3b82f6);
}

.ppt-chart-card i:nth-child(1) { height: 34%; }
.ppt-chart-card i:nth-child(2) { height: 72%; }
.ppt-chart-card i:nth-child(3) { height: 54%; }
.ppt-chart-card i:nth-child(4) { height: 86%; }

.ppt-text-card {
  position: absolute;
  right: 36px;
  bottom: 34px;
  width: 230px;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  background: rgba(2, 6, 23, 0.68);
  color: #cbd5e1;
  font-size: 13px;
}

.ppt-inspector-mock {
  padding: 14px;
}

.ppt-inspector-title {
  color: #e2e8f0;
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 18px;
}

.ppt-control-line {
  height: 10px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.18);
  margin-bottom: 12px;
}

.ppt-control-line.short { width: 68%; }

.ppt-control-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: 22px;
}

.ppt-control-grid span {
  height: 38px;
  border-radius: 10px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(96, 165, 250, 0.16);
}

.ppt-section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 92px 28px;
}

.ppt-section-title {
  max-width: 780px;
  margin: 0 auto 44px;
  text-align: center;
}

.ppt-section-title h2 {
  margin: 0 0 14px;
  color: var(--ppt-text);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.2;
}

.ppt-section-title p {
  margin: 0;
  color: var(--ppt-muted);
  font-size: 16px;
  line-height: 1.85;
}

.ppt-position-grid,
.ppt-feature-grid,
.ppt-scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.ppt-position-card,
.ppt-feature-card,
.ppt-scenario-grid article {
  border: 1px solid var(--ppt-border);
  border-radius: 18px;
  background: var(--ppt-panel);
  padding: 28px;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.ppt-position-card:hover,
.ppt-feature-card:hover,
.ppt-scenario-grid article:hover {
  transform: translateY(-4px);
  border-color: var(--ppt-border-strong);
  background: var(--ppt-panel-strong);
}

.ppt-position-card span {
  display: inline-flex;
  color: #60a5fa;
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 16px;
}

.ppt-position-card h3,
.ppt-feature-card h3,
.ppt-scenario-grid h3,
.ppt-step h3 {
  margin: 0 0 10px;
  color: #f1f5f9;
  font-size: 20px;
}

.ppt-position-card p,
.ppt-feature-card p,
.ppt-scenario-grid p,
.ppt-step p {
  margin: 0;
  color: var(--ppt-muted);
  font-size: 14px;
  line-height: 1.75;
}

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

.ppt-workflow {
  max-width: none;
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.06), rgba(15, 23, 42, 0));
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.ppt-workflow-line {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.ppt-step {
  padding: 26px 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
}

.ppt-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.92), rgba(139, 92, 246, 0.92));
  color: #fff;
  font-weight: 900;
}

.ppt-scenario-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.ppt-stack-panel {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  padding: 22px;
  border: 1px solid rgba(96, 165, 250, 0.18);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(139, 92, 246, 0.07));
}

.ppt-stack-panel div {
  min-height: 112px;
  padding: 22px;
  border-radius: 16px;
  background: rgba(2, 6, 23, 0.38);
}

.ppt-stack-panel b,
.ppt-stack-panel span {
  display: block;
}

.ppt-stack-panel b {
  margin-bottom: 10px;
  color: #f8fafc;
  font-size: 18px;
}

.ppt-stack-panel span {
  color: #94a3b8;
  font-size: 14px;
  line-height: 1.6;
}

.ppt-deploy-guide-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 20px;
  padding: 28px;
  border: 1px solid rgba(96, 165, 250, 0.2);
  border-radius: 22px;
  background: rgba(2, 6, 23, 0.42);
}

.ppt-deploy-guide-card span {
  display: inline-flex;
  margin-bottom: 10px;
  color: #93c5fd;
  font-size: 13px;
  font-weight: 800;
}

.ppt-deploy-guide-card h3 {
  margin: 0 0 10px;
  color: #f8fafc;
  font-size: 22px;
}

.ppt-deploy-guide-card p {
  margin: 0;
  max-width: 680px;
  color: #94a3b8;
  line-height: 1.75;
}

.ppt-deploy-guide-card p a {
  color: #93c5fd;
  font-weight: 700;
  text-decoration: none;
}

.ppt-deploy-guide-card p a:hover {
  color: #dbeafe;
}

.ppt-deploy-guide-card .ppt-btn {
  flex: 0 0 auto;
}

.ppt-deploy-guide-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.ppt-cta {
  margin: 40px auto 82px;
  max-width: 980px;
  padding: 58px 28px;
  text-align: center;
  border: 1px solid rgba(96, 165, 250, 0.22);
  border-radius: 26px;
  background:
    radial-gradient(circle at 28% 20%, rgba(59, 130, 246, 0.18), transparent 34%),
    rgba(255, 255, 255, 0.04);
}

.ppt-cta h2 {
  margin: 0 0 12px;
  color: #f8fafc;
  font-size: clamp(28px, 4vw, 42px);
}

.ppt-cta p {
  margin: 0 auto;
  max-width: 680px;
  color: #94a3b8;
  line-height: 1.8;
}

.ppt-cta .ppt-hero__actions {
  justify-content: center;
}

.ppt-footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.ppt-footer-links a {
  color: #64748b;
  text-decoration: none;
  font-size: 14px;
}

.ppt-footer-links a:hover {
  color: #94a3b8;
}

@media (max-width: 1080px) {
  .ppt-hero {
    grid-template-columns: 1fr;
  }

  .ppt-position-grid,
  .ppt-feature-grid,
  .ppt-scenario-grid,
  .ppt-stack-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ppt-deploy-guide-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .ppt-deploy-guide-actions {
    justify-content: flex-start;
  }

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

@media (max-width: 768px) {
  .ppt-hero {
    padding: 104px 20px 58px;
    gap: 34px;
  }

  .ppt-hero p {
    font-size: 16px;
  }

  .ppt-hero__actions,
  .ppt-cta .ppt-hero__actions {
    flex-direction: column;
  }

  .ppt-btn {
    width: 100%;
  }

  .ppt-deploy-guide-card {
    padding: 22px;
  }

  .ppt-deploy-guide-actions {
    width: 100%;
    flex-direction: column;
  }

  .ppt-editor-mock {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .ppt-slide-list,
  .ppt-inspector-mock {
    display: none;
  }

  .ppt-canvas-mock {
    min-height: 430px;
  }

  .ppt-model-card {
    right: 22px;
    width: 168px;
  }

  .ppt-chart-card,
  .ppt-text-card {
    left: 22px;
    right: 22px;
    width: auto;
  }

  .ppt-text-card {
    bottom: 168px;
  }

  .ppt-section {
    padding: 66px 20px;
  }

  .ppt-position-grid,
  .ppt-feature-grid,
  .ppt-scenario-grid,
  .ppt-stack-panel,
  .ppt-workflow-line {
    grid-template-columns: 1fr;
  }

  .ppt-stack-panel {
    padding: 14px;
  }

  .ppt-cta {
    margin: 24px 20px 64px;
  }
}