/* ── 无人机飞控平台 · Hero ── */
.uav-hero {
  position: relative;
  padding: 48px 0 64px;
  background:
    radial-gradient(ellipse 65% 50% at 72% 38%, rgba(37, 99, 235, 0.32) 0%, transparent 58%),
    radial-gradient(ellipse 40% 35% at 8% 70%, rgba(6, 182, 212, 0.16) 0%, transparent 52%),
    linear-gradient(180deg, #030712 0%, #0a1628 50%, #061018 100%);
  overflow: hidden;
}

.uav-hero__grid-lines {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(56, 189, 248, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 90% 80% at 55% 45%, #000 15%, transparent 72%);
  pointer-events: none;
}

.uav-hero__glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(90px);
}

.uav-hero__glow--primary {
  width: 420px;
  height: 420px;
  top: -80px;
  right: 5%;
  background: rgba(37, 99, 235, 0.28);
}

.uav-hero__glow--secondary {
  width: 260px;
  height: 260px;
  top: 40%;
  left: 4%;
  background: rgba(6, 182, 212, 0.14);
}

.uav-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.uav-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 8px 16px 8px 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: rgba(186, 230, 253, 0.95);
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(96, 165, 250, 0.35);
  border-radius: 999px;
}

.uav-hero__badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22d3ee;
  box-shadow: 0 0 12px #22d3ee;
}

.uav-hero h1 {
  font-size: clamp(1.875rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #f8fafc;
  margin-bottom: 16px;
}

.uav-hero__desc {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(148, 163, 184, 0.95);
  margin-bottom: 24px;
}

.uav-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
  padding: 0;
  list-style: none;
}

.uav-hero__tag {
  padding: 6px 14px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(186, 230, 253, 0.95);
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 999px;
}

.uav-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.uav-hero__visual {
  position: relative;
}

.uav-hero__visual-frame {
  position: relative;
  padding: 12px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(56, 189, 248, 0.28);
  border-radius: calc(var(--radius-lg) + 4px);
  box-shadow:
    0 0 40px rgba(37, 99, 235, 0.2),
    0 20px 50px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.uav-hero__visual-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.6), transparent);
  pointer-events: none;
}

.uav-hero__visual-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.uav-hero__orbit-ring {
  position: absolute;
  inset: -8%;
  border: 1px dashed rgba(34, 211, 238, 0.2);
  border-radius: 50%;
  pointer-events: none;
  animation: uavOrbitSpin 28s linear infinite;
}

@keyframes uavOrbitSpin {
  to { transform: rotate(360deg); }
}

/* ── 通用区块 ── */
.section-head__eyebrow--light {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 6px 14px 6px 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: rgba(37, 99, 235, 0.92);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 999px;
}

.section-head__eyebrow--light::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 8px rgba(var(--color-primary-rgb), 0.4);
}

.uav-section {
  padding: 64px 0;
}

.uav-section--subtle {
  background: var(--color-bg-subtle);
}

.uav-section .section-head {
  max-width: 720px;
  margin: 0 auto 40px;
  text-align: center;
}

.uav-section .section-head h2 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  font-weight: 600;
  color: var(--color-text-primary);
}

.uav-section .section-head p {
  max-width: 640px;
  margin: 14px auto 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

/* ── 图文特性 ── */
.uav-feature {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 48px;
  align-items: center;
}

.uav-feature--reverse .uav-feature__content {
  order: 2;
}

.uav-feature--reverse .uav-feature__media {
  order: 1;
}

.uav-feature__content p {
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
}

.uav-feature__content p:last-child {
  margin-bottom: 0;
}

.uav-feature__frame {
  border-radius: calc(var(--radius-lg) + 2px);
  overflow: hidden;
  border: 1px solid rgba(37, 99, 235, 0.14);
  box-shadow:
    0 8px 40px rgba(37, 99, 235, 0.12),
    0 4px 16px rgba(15, 23, 42, 0.06);
  background: #0f172a;
}

.uav-feature__frame img {
  display: block;
  width: 100%;
  height: auto;
}

/* ── 架构图（深色科技面板） ── */
.uav-arch {
  position: relative;
  padding: 72px 0 80px;
  background:
    radial-gradient(ellipse 70% 45% at 50% 0%, rgba(37, 99, 235, 0.15), transparent 58%),
    linear-gradient(180deg, #030712 0%, #0f172a 55%, #0a1628 100%);
  overflow: hidden;
}

.uav-arch::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(56, 189, 248, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 85% 70% at 50% 30%, #000 10%, transparent 75%);
  pointer-events: none;
}

.uav-arch .container {
  position: relative;
  z-index: 1;
}

.uav-arch__head {
  text-align: center;
  margin-bottom: 48px;
}

.uav-arch__head h2 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  font-weight: 600;
  color: #f1f5f9;
  margin-bottom: 12px;
}

.uav-arch__head p {
  max-width: 560px;
  margin: 0 auto;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(148, 163, 184, 0.9);
}

.uav-arch__grid {
  display: grid;
  gap: 28px;
}

.uav-arch__item {
  padding: 16px;
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid rgba(56, 189, 248, 0.18);
  border-radius: calc(var(--radius-lg) + 2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.uav-arch__item-label {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #67e8f9;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 999px;
}

.uav-arch__item img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

/* ── 双图叠放 ── */
.uav-stack {
  position: relative;
  width: 100%;
  padding-bottom: 12%;
}

.uav-stack__back {
  position: relative;
  z-index: 1;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(37, 99, 235, 0.12);
  box-shadow: 0 16px 44px rgba(15, 23, 42, 0.14);
}

.uav-stack__back img {
  display: block;
  width: 100%;
  height: auto;
}

.uav-stack__front {
  position: absolute;
  left: -3%;
  bottom: -8%;
  width: 90%;
  z-index: 2;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(56, 189, 248, 0.25);
  box-shadow:
    0 22px 56px rgba(37, 99, 235, 0.2),
    0 0 24px rgba(34, 211, 238, 0.08);
}

.uav-stack__front img {
  display: block;
  width: 100%;
  height: auto;
}

.uav-stack--device {
  padding-top: 5%;
  padding-bottom: 18%;
}

.uav-stack--device .uav-stack__back {
  width: 88%;
  margin-right: auto;
  margin-left: 0;
}

.uav-stack--device .uav-stack__front {
  left: auto;
  right: -3%;
  bottom: auto;
  top: 0;
  width: min(62%, 540px);
}

/* ── 巡检大屏（双图画廊 + 要点卡片） ── */
.uav-inspect-section {
  padding-top: 72px;
  padding-bottom: 72px;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(37, 99, 235, 0.08), transparent 55%),
    var(--color-bg-subtle);
}

.uav-inspect-section .section-head {
  margin-bottom: 32px;
}

.uav-inspect-section__lead {
  max-width: 520px;
  margin: 14px auto 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.uav-inspect-gallery {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
  margin-bottom: 32px;
}

.uav-inspect-card {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.uav-inspect-card__cap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.uav-inspect-card__dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  box-shadow: 0 0 10px rgba(var(--color-primary-rgb), 0.45);
}

.uav-inspect-card__screen {
  flex: 1;
  padding: 10px;
  background: linear-gradient(165deg, #0f172a 0%, #1e293b 100%);
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: calc(var(--radius-lg) + 2px);
  box-shadow:
    0 12px 40px rgba(15, 23, 42, 0.18),
    0 0 32px rgba(37, 99, 235, 0.08);
  overflow: hidden;
}

.uav-inspect-card__screen::before {
  content: '';
  display: block;
  height: 1px;
  margin: -10px -10px 10px;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.45), transparent);
}

.uav-inspect-card__screen img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.uav-inspect-card--wide .uav-inspect-card__screen {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.uav-inspect-card--wide .uav-inspect-card__screen img {
  flex: 1;
  object-fit: contain;
  object-position: center top;
}

.uav-inspect-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.uav-inspect-highlight {
  padding: 22px 20px;
  background: #fff;
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.uav-inspect-highlight:hover {
  border-color: rgba(37, 99, 235, 0.28);
  box-shadow: 0 8px 28px rgba(37, 99, 235, 0.1);
}

.uav-inspect-highlight strong {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.uav-inspect-highlight p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

@media (max-width: 992px) {
  .uav-hero {
    padding: 36px 0 52px;
  }

  .uav-hero__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .uav-hero__visual {
    order: -1;
    max-width: 480px;
    margin: 0 auto;
  }

  .uav-hero__orbit-ring {
    display: none;
  }

  .uav-feature,
  .uav-feature--reverse {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .uav-feature--reverse .uav-feature__content,
  .uav-feature--reverse .uav-feature__media {
    order: unset;
  }

  .uav-feature__media {
    order: -1;
  }

  .uav-stack {
    padding-bottom: 0;
  }

  .uav-stack__front {
    position: relative;
    left: 0;
    bottom: auto;
    width: 100%;
    margin-top: -32px;
  }

  .uav-stack--device {
    padding-top: 0;
    padding-bottom: 0;
  }

  .uav-stack--device .uav-stack__back {
    width: 100%;
  }

  .uav-stack--device .uav-stack__front {
    position: relative;
    right: auto;
    top: auto;
    width: 100%;
    max-width: none;
    margin-top: -28px;
    margin-left: auto;
  }

  .uav-inspect-gallery {
    grid-template-columns: 1fr;
  }

  .uav-inspect-highlights {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .uav-hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .uav-hero__actions .btn {
    width: 100%;
    justify-content: center;
  }

  .uav-section {
    padding: 48px 0;
  }
}

/* ── 产品页扩展：指标 / 受众 / 图库 / 模块网格 ── */
.product-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 8px;
}

.product-metrics__card {
  padding: 28px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.product-metrics__card:hover {
  border-color: rgba(37, 99, 235, 0.25);
  box-shadow: var(--shadow-md);
}

.product-metrics__value {
  display: block;
  margin-bottom: 10px;
  font-size: clamp(1.5rem, 2.5vw, 1.875rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

.product-metrics__card h3 {
  margin: 0 0 10px;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
}

.product-metrics__card p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.product-audience {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.product-audience__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 28px 16px;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform 0.2s, box-shadow 0.2s;
}

.product-audience__item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.product-audience__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-audience__icon img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.product-audience__item span {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.product-pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-pain-card {
  padding: 28px 24px;
  background: linear-gradient(145deg, #f8fafc 0%, #fff 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.product-pain-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.product-pain-card__head img {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.product-pain-card__head h3 {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
}

.product-pain-card p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.product-gallery-stack {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.product-gallery-stack__item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(37, 99, 235, 0.08);
  box-shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
  background: #eef2f8;
  line-height: 0;
}

.product-gallery-stack__item img {
  width: 100%;
  height: auto;
  display: block;
}

.product-modules {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-module {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.product-module__head {
  padding: 20px 22px 0;
}

.product-module__head h3 {
  margin: 0 0 8px;
  font-size: 1.125rem;
  font-weight: 600;
}

.product-module__head p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.product-module__media {
  margin-top: auto;
  padding: 16px;
  background: linear-gradient(180deg, transparent, rgba(241, 245, 249, 0.8));
}

.product-module__media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  display: block;
}

.product-advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-advantage {
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.product-advantage__img {
  width: 100%;
  max-width: 200px;
  height: auto;
  margin: 0 auto 16px;
  display: block;
}

.product-advantage h3 {
  margin: 0 0 10px;
  font-size: 1.0625rem;
}

.product-advantage p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  text-align: left;
}

.product-showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.product-showcase {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.product-showcase h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.product-showcase__media {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #f1f5f9;
}

.product-showcase__media img {
  width: 100%;
  height: auto;
  display: block;
}

/* 主题色：各产品页 Hero 光晕 */
.page-llm-mul .uav-hero {
  background:
    radial-gradient(ellipse 65% 50% at 72% 38%, rgba(139, 92, 246, 0.34) 0%, transparent 58%),
    radial-gradient(ellipse 40% 35% at 8% 70%, rgba(99, 102, 241, 0.18) 0%, transparent 52%),
    linear-gradient(180deg, #030712 0%, #0f0a1e 50%, #0a0618 100%);
}

.page-llm-mul .uav-hero__glow--primary {
  background: rgba(139, 92, 246, 0.32);
}

.page-llm-mul .uav-hero__badge {
  background: rgba(139, 92, 246, 0.18);
  border-color: rgba(167, 139, 250, 0.4);
}

.page-llm-mul .uav-hero__tag {
  border-color: rgba(167, 139, 250, 0.3);
}

.page-llm-agent .uav-hero {
  background:
    radial-gradient(ellipse 65% 50% at 72% 38%, rgba(79, 70, 229, 0.32) 0%, transparent 58%),
    radial-gradient(ellipse 40% 35% at 8% 70%, rgba(59, 130, 246, 0.16) 0%, transparent 52%),
    linear-gradient(180deg, #030712 0%, #0a1028 50%, #060d18 100%);
}

.page-llm-agent .uav-hero__glow--primary {
  background: rgba(79, 70, 229, 0.3);
}

.page-llm-agent .uav-hero__badge {
  background: rgba(79, 70, 229, 0.16);
  border-color: rgba(129, 140, 248, 0.38);
}

.page-labeling .uav-hero {
  background:
    radial-gradient(ellipse 65% 50% at 72% 38%, rgba(16, 185, 129, 0.28) 0%, transparent 58%),
    radial-gradient(ellipse 40% 35% at 8% 70%, rgba(6, 182, 212, 0.14) 0%, transparent 52%),
    linear-gradient(180deg, #030712 0%, #061218 50%, #041018 100%);
}

.page-labeling .uav-hero__glow--primary {
  background: rgba(16, 185, 129, 0.26);
}

.page-labeling .uav-hero__badge {
  background: rgba(16, 185, 129, 0.14);
  border-color: rgba(52, 211, 153, 0.35);
}

.page-labeling .product-metrics__value {
  color: #059669;
}

.page-inference .uav-hero {
  background:
    radial-gradient(ellipse 65% 50% at 72% 38%, rgba(14, 165, 233, 0.3) 0%, transparent 58%),
    radial-gradient(ellipse 40% 35% at 12% 65%, rgba(249, 115, 22, 0.12) 0%, transparent 52%),
    linear-gradient(180deg, #030712 0%, #0a1628 50%, #061018 100%);
}

.page-inference .uav-hero__glow--secondary {
  background: rgba(249, 115, 22, 0.12);
}

.page-inference .uav-hero__badge {
  background: rgba(14, 165, 233, 0.14);
  border-color: rgba(56, 189, 248, 0.38);
}

@media (max-width: 992px) {
  .product-metrics,
  .product-pain-grid,
  .product-modules,
  .product-advantage-grid {
    grid-template-columns: 1fr;
  }

  .product-audience {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 576px) {
  .product-audience {
    grid-template-columns: 1fr;
  }
}

/* ── 标注训练页：产品价值 + 功能亮点 ── */
.page-labeling .label-value-section {
  padding-top: 64px;
  padding-bottom: 56px;
  background:
    radial-gradient(ellipse 90% 60% at 50% 0%, rgba(16, 185, 129, 0.1), transparent 58%),
    var(--color-bg-subtle);
}

.page-labeling .label-value-section .section-head,
.page-labeling .label-features-section .section-head {
  margin-bottom: 28px;
}

.page-labeling .label-value-section__lead,
.page-labeling .label-features-section__lead {
  max-width: 520px;
  margin: 12px auto 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.page-labeling .label-value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.page-labeling .label-value-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 0;
  min-height: 320px;
  background: #fff;
  border: 1px solid rgba(16, 185, 129, 0.18);
  border-radius: calc(var(--radius-lg) + 2px);
  overflow: hidden;
  box-shadow:
    0 4px 24px rgba(15, 23, 42, 0.06),
    0 0 0 1px rgba(255, 255, 255, 0.8) inset;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.page-labeling .label-value-card:hover {
  border-color: rgba(16, 185, 129, 0.35);
  box-shadow: 0 12px 40px rgba(16, 185, 129, 0.12);
  transform: translateY(-2px);
}

.page-labeling .label-value-card__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 22px 22px;
}

.page-labeling .label-value-card__meta {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.page-labeling .label-value-card__index {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #047857;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.18), rgba(6, 182, 212, 0.12));
  border: 1px solid rgba(16, 185, 129, 0.28);
  border-radius: 10px;
}

.page-labeling .label-value-card__meta h3 {
  margin: 4px 0 0;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text-primary);
}

.page-labeling .label-value-card__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.page-labeling .label-value-card__points {
  margin: auto 0 0;
  padding: 0 0 0 18px;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.page-labeling .label-value-card__points li + li {
  margin-top: 6px;
}

.page-labeling .label-value-card__points li::marker {
  color: #10b981;
}

.page-labeling .label-value-card__visual {
  padding: 14px 14px 14px 0;
  display: flex;
  align-items: stretch;
}

.page-labeling .label-value-card__screen {
  flex: 1;
  padding: 10px;
  background: linear-gradient(165deg, #0f172a 0%, #1e293b 100%);
  border: 1px solid rgba(52, 211, 153, 0.25);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.2);
  overflow: hidden;
}

.page-labeling .label-value-card__screen::before {
  content: '';
  display: block;
  height: 3px;
  margin: -10px -10px 8px;
  background: linear-gradient(90deg, #10b981, #22d3ee, #10b981);
  opacity: 0.85;
}

.page-labeling .label-value-card__screen img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
  object-position: top center;
  border-radius: calc(var(--radius-sm) - 2px);
}

.page-labeling .label-value-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 24px;
}

.page-labeling .label-value-chip {
  padding: 8px 16px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #047857;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.22);
  border-radius: 999px;
}

/* 功能亮点 · Tab + 预览 */
.page-labeling .label-features-section {
  padding-top: 56px;
  padding-bottom: 72px;
  background:
    linear-gradient(180deg, #fff 0%, #f8fafc 40%, #f1f5f9 100%);
}

.page-labeling .label-features__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.page-labeling .label-features__shell {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 20px;
  align-items: stretch;
  min-height: 420px;
  padding: 20px;
  background: linear-gradient(145deg, #0f172a 0%, #1e293b 48%, #0f172a 100%);
  border: 1px solid rgba(52, 211, 153, 0.22);
  border-radius: calc(var(--radius-lg) + 4px);
  box-shadow:
    0 20px 50px rgba(15, 23, 42, 0.22),
    0 0 48px rgba(16, 185, 129, 0.08);
}

.page-labeling .label-features__nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-labeling .label-features__tab {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}

.page-labeling .label-features__tab:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(52, 211, 153, 0.2);
}

.page-labeling .label-features__tab-num {
  flex-shrink: 0;
  width: 32px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: rgba(52, 211, 153, 0.9);
  text-align: center;
}

.page-labeling .label-features__tab-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.page-labeling .label-features__tab-text strong {
  font-size: 0.9375rem;
  font-weight: 600;
  color: rgba(248, 250, 252, 0.92);
}

.page-labeling .label-features__tab-text small {
  font-size: 0.75rem;
  color: rgba(148, 163, 184, 0.9);
  line-height: 1.4;
}

.page-labeling #label-feat-1:checked ~ .label-features__shell .label-features__tab[for="label-feat-1"],
.page-labeling #label-feat-2:checked ~ .label-features__shell .label-features__tab[for="label-feat-2"],
.page-labeling #label-feat-3:checked ~ .label-features__shell .label-features__tab[for="label-feat-3"],
.page-labeling #label-feat-4:checked ~ .label-features__shell .label-features__tab[for="label-feat-4"],
.page-labeling #label-feat-5:checked ~ .label-features__shell .label-features__tab[for="label-feat-5"] {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.22), rgba(6, 182, 212, 0.12));
  border-color: rgba(52, 211, 153, 0.45);
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.15);
}

.page-labeling .label-features__stage {
  position: relative;
  min-height: 380px;
  padding: 18px 20px 20px;
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-labeling .label-features__panel {
  display: none;
  flex-direction: column;
  gap: 14px;
  height: 100%;
  animation: label-feat-in 0.35s ease;
}

@keyframes label-feat-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-labeling #label-feat-1:checked ~ .label-features__shell .label-features__panel[data-panel="1"],
.page-labeling #label-feat-2:checked ~ .label-features__shell .label-features__panel[data-panel="2"],
.page-labeling #label-feat-3:checked ~ .label-features__shell .label-features__panel[data-panel="3"],
.page-labeling #label-feat-4:checked ~ .label-features__shell .label-features__panel[data-panel="4"],
.page-labeling #label-feat-5:checked ~ .label-features__shell .label-features__panel[data-panel="5"] {
  display: flex;
}

.page-labeling .label-features__panel-head h3 {
  margin: 0 0 8px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.page-labeling .label-features__panel-head p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.page-labeling .label-features__panel-screen {
  flex: 1;
  margin-top: auto;
  padding: 10px;
  background: linear-gradient(180deg, #f1f5f9, #e2e8f0);
  border: 1px solid rgba(37, 99, 235, 0.1);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-labeling .label-features__panel-screen img {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(52vh, 360px);
  object-fit: contain;
  object-position: top center;
  border-radius: calc(var(--radius-sm) - 2px);
}

@media (max-width: 992px) {
  .page-labeling .label-value-grid {
    grid-template-columns: 1fr;
  }

  .page-labeling .label-value-card {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .page-labeling .label-value-card__visual {
    padding: 0 14px 14px;
  }

  .page-labeling .label-features__shell {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .page-labeling .label-features__nav {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .page-labeling .label-features__tab {
    flex: 0 0 auto;
    min-width: 148px;
  }

  .page-labeling .label-features__tab-text small {
    display: none;
  }
}

@media (max-width: 576px) {
  .page-labeling .label-value-card__body {
    padding: 18px 16px;
  }

  .page-labeling .label-features__shell {
    padding: 14px;
  }

  .page-labeling .label-features__stage {
    padding: 14px;
  }
}