.inner-banner {
  height: 70vh;
  min-height: 20rem;
  max-height: 32rem;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  position: relative;
}

.inner-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(8, 2, 32, 0.55);
}

.inner-banner-content {
  position: relative;
  z-index: 1;
  color: #fff;
}

.inner-banner h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.3rem;
}

.inner-banner p {
  margin-top: 0.75rem;
  font-family: var(--font-label-en);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  opacity: 0.75;
}

.dark-block-soft {
  background: var(--color-surface-dark-alt);
  color: var(--color-text-on-dark);
}

.dark-block-soft .com-n-til h3 {
  color: #fff;
}

.dark-block-soft .com-n-til span {
  color: rgba(255, 255, 255, 0.55);
}
.about-intro p,
.bms-intro p {
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 1rem;
  max-width: 52rem;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.base-grid,
.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.strength-grid {
  grid-template-columns: repeat(4, 1fr);
}

.base-card,
.strength-item {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 2rem;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.base-num,
.strength-val {
  font-family: var(--font-stat);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-brand-primary);
}

.base-unit,
.strength-val small {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text-strong);
}

.base-card p,
.strength-item h4 {
  margin-top: 0.75rem;
  color: var(--color-text-secondary);
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.app-card {
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-card);
}

.app-card h4 {
  color: var(--color-brand-accent);
  margin-bottom: 0.5rem;
}

.app-card p {
  opacity: 0.8;
  line-height: 1.7;
}

.product-section {
  padding: var(--space-section) 0;
}

.product-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.product-en {
  font-family: var(--font-label-en);
  text-transform: uppercase;
  color: var(--color-brand-primary);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
}

.product-info h3 {
  font-size: 2rem;
  margin: 0.5rem 0 1rem;
  color: var(--color-text-strong);
}

.product-summary {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.product-list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--color-text-secondary);
}

.product-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-brand-primary);
}

.product-info .btn-solid {
  margin-top: 1.5rem;
}

.product-visual {
  border-radius: var(--radius-card);
  overflow: hidden;
}

.scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.scenario-tag {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--color-border-hairline);
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

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

.advantage-card {
  background: #fff;
  padding: 2rem;
  border-radius: var(--radius-card);
  border-top: 3px solid var(--color-brand-primary);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.advantage-card h4 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--color-text-strong);
}

.advantage-card p {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.bms-platforms {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.bms-platform {
  background: #fff;
  padding: 1.5rem;
  border-radius: var(--radius-card);
}

.bms-platform h5 {
  color: var(--color-brand-primary);
  margin-bottom: 0.5rem;
}

.bms-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.bms-feature {
  background: #fff;
  padding: 1.25rem;
  border-radius: 12px;
}

.bms-num {
  font-family: var(--font-stat);
  color: var(--color-brand-primary);
  font-size: 1.25rem;
  font-weight: 600;
}

.bms-feature h4 {
  margin: 0.5rem 0;
  font-size: 1rem;
}

.bms-feature p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.testing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.testing-list ul,
.testing-equipment ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 1rem;
  margin-top: 1rem;
}

.testing-list li,
.testing-equipment li {
  font-size: 0.9rem;
  opacity: 0.85;
  padding-left: 1rem;
  position: relative;
}

.testing-list li::before,
.testing-equipment li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--color-brand-accent);
}

.testing-note {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  opacity: 0.75;
}

.process-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 1.25rem;
  background: var(--color-surface-muted);
  border-radius: 12px;
  min-width: 100px;
}

.step-num {
  font-family: var(--font-stat);
  color: var(--color-brand-primary);
  font-weight: 600;
}

.step-label {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.process-arrow {
  color: var(--color-brand-primary);
  font-size: 1.25rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 1.5rem;
  align-items: stretch;
}

.contact-item {
  margin-bottom: 1.5rem;
}

.contact-item h4 {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

.contact-item h4 .icon {
  color: var(--color-brand-primary);
}

.contact-item p,
.contact-item a {
  color: var(--color-text-strong);
  font-size: 1.05rem;
}

.contact-form {
  margin: 0;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border-hairline);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  background: #fff;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-brand-primary);
}

@media (max-width: 992px) {
  .base-grid,
  .advantage-grid,
  .bms-features { grid-template-columns: 1fr 1fr; }
  .strength-grid { grid-template-columns: 1fr 1fr; }
  .product-block,
  .contact-grid,
  .testing-grid,
  .bms-platforms { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .base-grid,
  .advantage-grid,
  .bms-features,
  .strength-grid,
  .app-grid { grid-template-columns: 1fr; }
  .testing-list ul,
  .testing-equipment ul { grid-template-columns: 1fr; }
}

/* 技术创新页 — 三栏横排（备用，主布局在组件内联 style） */
#advantages .tech-cards-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.75rem;
  margin-top: var(--space-block);
  width: 100%;
}

#advantages .tech-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

@media (max-width: 900px) {
  #advantages .tech-cards-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  #advantages .tech-cards-row {
    grid-template-columns: 1fr;
  }
}