/* ===== 产品详情页 ===== */
.product-page {
  min-height: 100vh;
  background: #f4f7fb;
  color: #0f172a;
}

.product-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 22, 40, 0.94);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.product-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}
.product-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
}
.product-brand img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}
.product-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}
.product-nav a {
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  font-weight: 600;
}
.product-nav-cta {
  padding: 8px 16px;
  border-radius: 50px;
  background: #5ec4c4;
  color: #0a1628 !important;
}

.product-hero {
  background: linear-gradient(160deg, #0a1628 0%, #162d4a 50%, #1a4a5a 100%);
  color: #fff;
  padding: 64px 0 56px;
}
.product-hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 900;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.product-tagline {
  font-size: 20px;
  color: #5ec4c4;
  font-weight: 600;
  margin-bottom: 16px;
}
.product-lead {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 22px;
}
.product-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}
.product-stack li {
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.82);
}
.product-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.product-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
  max-width: 720px;
}
.product-stats li {
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.product-stats strong {
  display: block;
  font-size: 20px;
  font-weight: 800;
  color: #5ec4c4;
  margin-bottom: 4px;
}
.product-stats span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
}

.product-main {
  padding: 56px 0 80px;
}
.product-section {
  margin-bottom: 56px;
}
.product-section h2,
.product-cta h2 {
  font-size: 26px;
  font-weight: 800;
  color: #0f2137;
  margin-bottom: 18px;
}

.product-gallery-main {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid rgba(15, 33, 55, 0.1);
  border-radius: 18px;
  overflow: hidden;
  background: #0f2137;
  cursor: zoom-in;
}
.product-gallery-frame {
  display: block;
  position: relative;
  aspect-ratio: 2 / 1;
  background: #08131f;
}
.product-gallery-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.product-gallery-caption {
  display: block;
  padding: 10px 14px;
  background: #0f2137;
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  text-align: left;
}
.product-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(92px, 1fr));
  gap: 8px;
  margin-top: 12px;
}
.product-thumb {
  padding: 0;
  border: 2px solid transparent;
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
  cursor: pointer;
}
.product-thumb img {
  width: 100%;
  height: 64px;
  object-fit: cover;
  display: block;
}
.product-thumb.active {
  border-color: #5ec4c4;
}

.product-highlights,
.product-modules,
.product-pains,
.product-deliverables {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.product-roles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.product-highlights article,
.product-modules article,
.product-pains article,
.product-roles article,
.product-deliverables article {
  padding: 22px 20px;
  background: #fff;
  border: 1px solid rgba(15, 33, 55, 0.08);
  border-radius: 16px;
}
.product-highlights h3,
.product-modules h3,
.product-pains h3,
.product-roles h3,
.product-deliverables h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: #0f2137;
}
.product-highlights p,
.product-modules p,
.product-pains p,
.product-roles p,
.product-deliverables p {
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
}

.product-flow {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.product-flow li {
  position: relative;
  padding: 18px 16px 16px;
  background: #fff;
  border: 1px solid rgba(15, 33, 55, 0.08);
  border-radius: 16px;
}
.product-flow-index {
  display: block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #2a9d9d;
  margin-bottom: 8px;
}
.product-flow h3 {
  font-size: 16px;
  margin-bottom: 6px;
  color: #0f2137;
}
.product-flow p {
  font-size: 13px;
  line-height: 1.6;
  color: #475569;
}

.product-spotlight {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
  gap: 28px;
  align-items: center;
  padding: 28px;
  background: #fff;
  border: 1px solid rgba(15, 33, 55, 0.08);
  border-radius: 24px;
}
.product-spotlight-copy h2 {
  margin-bottom: 12px;
}
.product-spotlight-lead {
  font-size: 15px;
  line-height: 1.8;
  color: #334155;
  margin-bottom: 16px;
}
.product-spotlight-copy ul {
  display: grid;
  gap: 10px;
}
.product-spotlight-copy li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
}
.product-spotlight-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #5ec4c4;
}
.product-spotlight-shot {
  display: block;
  width: 100%;
  padding: 18px 18px 12px;
  border: none;
  border-radius: 20px;
  background: #0f2137;
  cursor: zoom-in;
}
.product-spotlight-shot img {
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
}
.product-spotlight-shot span {
  display: block;
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

.product-scenarios {
  display: grid;
  gap: 10px;
}
.product-scenarios li {
  padding: 14px 16px 14px 18px;
  background: #fff;
  border-radius: 12px;
  border-left: 3px solid #5ec4c4;
  color: #334155;
  line-height: 1.6;
}

.product-pricing {
  padding: 32px 28px;
  background: #fff;
  border: 1px solid rgba(15, 33, 55, 0.08);
  border-radius: 24px;
  border-left: 4px solid #5ec4c4;
}
.product-pricing h2 {
  margin-bottom: 12px;
}
.product-pricing-lead {
  max-width: 760px;
  font-size: 15px;
  line-height: 1.85;
  color: #334155;
  margin-bottom: 18px;
}
.product-pricing ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 20px;
}
.product-pricing li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: #475569;
}
.product-pricing li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #5ec4c4;
}

.product-cta {
  padding: 36px 32px;
  border-radius: 24px;
  background: linear-gradient(160deg, #0a1628 0%, #1a4a5a 100%);
  color: #fff;
  text-align: center;
}
.product-cta h2 {
  color: #fff;
  margin-bottom: 10px;
}
.product-cta p {
  color: rgba(255, 255, 255, 0.68);
  margin-bottom: 24px;
}
.product-cta .product-hero-actions {
  justify-content: center;
}
.product-cta-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
}

.product-footer {
  padding: 28px 0 40px;
  text-align: center;
  color: #64748b;
  font-size: 13px;
}
.product-footer a {
  color: #2a9d9d;
}

.product-lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 12, 22, 0.92);
  padding: 48px 64px;
}
.product-lightbox figure {
  margin: 0;
  min-width: 0;
  max-width: calc(100vw - 128px);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.product-lightbox img {
  width: auto;
  height: auto;
  max-width: min(92vw, 1600px);
  max-height: calc(86vh - 40px);
  object-fit: contain;
  border-radius: 12px;
  display: block;
}
.product-lightbox figcaption {
  margin-top: 12px;
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
}
.product-lightbox-close,
.product-lightbox-nav {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: none;
  cursor: pointer;
}
.product-lightbox-close {
  top: 16px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 28px;
}
.product-lightbox-nav {
  top: 50%;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 28px;
  transform: translateY(-50%);
}
.product-lightbox-nav.prev { left: 16px; }
.product-lightbox-nav.next { right: 16px; }

@media (max-width: 1100px) {
  .product-flow { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .product-spotlight { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .product-hero { padding: 36px 0 32px; }
  .product-hero h1 { font-size: 28px; }
  .product-tagline { font-size: 16px; }
  .product-main { padding: 32px 0 48px; }
  .product-stats { grid-template-columns: 1fr; }
  .product-highlights,
  .product-modules,
  .product-pains,
  .product-roles,
  .product-deliverables,
  .product-flow { grid-template-columns: 1fr; }
  .product-spotlight { grid-template-columns: 1fr; padding: 20px; }
  .product-pricing { padding: 24px 18px; }
  .product-pricing ul { grid-template-columns: 1fr; }
  .product-cta { padding: 28px 18px; }
  .product-nav a:not(.product-nav-cta) { display: none; }
  .product-lightbox { padding: 56px 12px; }
  .product-lightbox-nav { display: none; }
}