/* 研发项目页 — Apple / AheadForm 风格产品叙事 */

.labs-page main {
  padding-top: 0;
}

.labs-hero {
  min-height: clamp(520px, 88vh, 920px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(31, 124, 255, 0.18), transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(108, 255, 211, 0.08), transparent 50%),
    var(--body-bg);
}

.labs-hero__eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 1.25rem;
}

.labs-hero__title {
  font-size: clamp(2.75rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  max-width: 14ch;
}

.labs-hero__title-en {
  display: block;
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text-muted);
  margin-top: 0.75rem;
}

.labs-hero__lead {
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  line-height: var(--text-leading);
  color: var(--text-muted);
  max-width: 42rem;
  margin: 0 auto 2.5rem;
}

.labs-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.labs-hero__actions a {
  font-size: 1.0625rem;
}

/* ERS 一魂三体总览 */
.labs-stack {
  padding: clamp(3rem, 8vw, 6rem) 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

.labs-stack__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

.labs-stack__desc {
  color: var(--text-muted);
  max-width: 36rem;
  margin: 0 auto 2.5rem;
  line-height: var(--text-leading);
}

.labs-stack__diagram {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.labs-stack__node {
  padding: 1.25rem 1rem;
  border-radius: 1.25rem;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  backdrop-filter: blur(12px);
}

.labs-stack__node strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

.labs-stack__node span {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.labs-stack__soul {
  padding: 1.5rem;
  border-radius: 1.5rem;
  border: 1px solid rgba(31, 124, 255, 0.35);
  background: linear-gradient(135deg, rgba(31, 124, 255, 0.12), rgba(108, 255, 211, 0.06));
  font-weight: 600;
  font-size: 1.125rem;
}

.labs-stack__soul small {
  display: block;
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* 产品区块 — Apple 式全宽叙事 */
.labs-product {
  padding: clamp(4rem, 10vw, 7rem) 1.5rem;
  border-top: 1px solid var(--border-color);
}

.labs-product__inner {
  max-width: 980px;
  margin: 0 auto;
  text-align: center;
}

.labs-product__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(108, 255, 211, 0.95);
  margin-bottom: 0.75rem;
}

.labs-product--warm .labs-product__tag {
  color: rgba(255, 180, 120, 0.95);
}

.labs-product--violet .labs-product__tag {
  color: rgba(180, 160, 255, 0.95);
}

.labs-product--cyan .labs-product__tag {
  color: rgba(100, 210, 255, 0.95);
}

.labs-product__name {
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin: 0 0 0.5rem;
}

.labs-product__subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 500;
  color: var(--text-muted);
  margin: 0 0 1.5rem;
}

.labs-product__pitch {
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: var(--text-leading);
  color: var(--text-muted);
  max-width: 40rem;
  margin: 0 auto 2rem;
}

.labs-product__shot {
  margin: 1.25rem 0 1.5rem;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  background: #0f172a;
  line-height: 0;
}

.labs-product__shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

.labs-product__status {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.55);
}

.labs-product__links .labs-product__status {
  margin-right: 0.35rem;
}

.labs-product__visual {
  margin: 2.5rem auto 2rem;
  max-width: 720px;
  min-height: 200px;
  border-radius: 1.75rem;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.labs-product__visual-label {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.labs-product__code {
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 0.8125rem;
  line-height: 1.6;
  text-align: left;
  width: 100%;
  color: var(--text-color);
  opacity: 0.85;
}

.labs-product__specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  max-width: 640px;
  margin: 0 auto 2rem;
  text-align: left;
}

.labs-product__spec {
  padding: 1rem 1.1rem;
  border-radius: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
}

.labs-product__spec dt {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.labs-product__spec dd {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 500;
}

.labs-product__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}

.labs-product__links a:not(.cta) {
  color: rgba(31, 124, 255, 0.95);
  text-decoration: none;
  font-size: 1.0625rem;
}

.labs-product__links a:not(.cta):hover {
  text-decoration: underline;
}

:root[data-theme='light'] .labs-product__links a:not(.cta) {
  color: #0066cc;
}

/* 交替背景 */
.labs-product--alt {
  background:
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(31, 124, 255, 0.06), transparent 70%),
    var(--body-bg);
}

/* 底部 CTA */
.labs-cta-band {
  text-align: center;
  padding: clamp(3rem, 8vw, 5rem) 1.5rem 5rem;
  border-top: 1px solid var(--border-color);
}

.labs-cta-band h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.labs-cta-band p {
  color: var(--text-muted);
  max-width: 32rem;
  margin: 0 auto 1.75rem;
}

.labs-cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

@media (max-width: 768px) {
  .labs-stack__diagram {
    grid-template-columns: 1fr;
  }

  .labs-product__specs {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .labs-product__specs {
    grid-template-columns: 1fr;
  }
}