/* ==========================================================================
   首页区块样式
   ========================================================================== */

/* ==========================================================================
   线框占位符（素材未到位时使用，待替换为实拍/产品图）
   ========================================================================== */
.ph {
  position: relative;
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  background-color: #eef2f6;
  background-image: linear-gradient(
      45deg,
      rgba(10, 37, 64, 0.05) 25%,
      transparent 25% 50%,
      rgba(10, 37, 64, 0.05) 50% 75%,
      transparent 75%
    );
  background-size: 2.4rem 2.4rem;
  color: #8a98a6;
  text-align: center;
}

/* 对角交叉线，明确表示这是占位框 */
.ph::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      to top right,
      transparent calc(50% - 1px),
      rgba(10, 37, 64, 0.12) 50%,
      transparent calc(50% + 1px)
    ),
    linear-gradient(
      to bottom right,
      transparent calc(50% - 1px),
      rgba(10, 37, 64, 0.12) 50%,
      transparent calc(50% + 1px)
    );
}

.ph__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 1.2rem;
}

.ph__inner svg {
  width: 3.2rem;
  height: 3.2rem;
  opacity: 0.6;
}

.ph__label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0;
}

/* ==========================================================================
   1. 首屏 Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
  background: var(--grad-hero);
  color: #fff;
}

/* 背景轮播层 */
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center right;
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 1.2s var(--ease), transform 6s linear;
}

.hero__slide.is-active {
  opacity: 1;
  transform: scale(1);
}

/* 深色遮罩，保证左侧文字清晰 */
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
      100deg,
      rgba(8, 18, 32, 0.94) 0%,
      rgba(8, 18, 32, 0.82) 32%,
      rgba(10, 28, 48, 0.55) 62%,
      rgba(10, 28, 48, 0.35) 100%
    );
}

/* 轮播指示点 */
.hero__dots {
  position: absolute;
  left: 50%;
  bottom: 3.2rem;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 1rem;
}

.hero__dot {
  width: 3.2rem;
  height: 0.4rem;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.25);
  transition: background var(--dur) var(--ease);
}

.hero__dot.is-active {
  background: var(--grad-accent);
}

/* 网格纹理叠加 */
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.04) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 6rem 6rem;
  mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 75%);
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 4rem;
  width: 100%;
  padding-block: 6rem;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.7rem 1.4rem;
  margin-bottom: var(--space-3);
  font-size: var(--fs-sm);
  font-weight: 500;
  border-radius: var(--radius-pill);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.hero__badge .dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 0.4rem rgba(0, 212, 180, 0.25);
}

.hero__title {
  font-size: var(--fs-display);
  letter-spacing: 0;
  margin-bottom: var(--space-3);
}

.hero__title .grad {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__desc {
  font-size: var(--fs-lg);
  line-height: 1.8;
  color: #c0cfdf;
  max-width: 54rem;
  margin-bottom: var(--space-4);
}

/* 副文本中的产品词高亮 */
.hero__desc .hl {
  color: var(--color-accent-soft);
  font-weight: 700;
}

/* 能力标签组 */
.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: var(--space-4);
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.3rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero__tag svg {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--color-accent);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
}

/* 右侧漂浮数据卡 */
.hero__visual {
  position: relative;
  /* 四周留白，给漂浮卡空间，避免与玻璃卡及轮播指示点重叠 */
  padding: 3.6rem 3.2rem 4rem;
}

.hero-card {
  position: relative;
  z-index: 1;
  padding: 3.2rem;
  border-radius: var(--radius-xl);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-float);
}

.hero-card__title {
  font-size: var(--fs-h4);
  color: #fff;
  margin-bottom: 0.6rem;
}

.hero-card__sub {
  font-size: var(--fs-sm);
  color: #a9bccf;
  margin-bottom: var(--space-4);
}

.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.6rem;
}

.hero-stat {
  padding: 1.8rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-stat__num {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--color-accent-soft);
  line-height: 1.1;
}

.hero-stat__num span {
  font-size: 1.6rem;
}

.hero-stat__label {
  margin-top: 0.4rem;
  font-size: var(--fs-xs);
  color: #9fb2c5;
}

/* 漂浮小卡（3个，分布在玻璃卡边缘，避开左上标题区） */
.hero-float {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 1.6rem;
  border-radius: var(--radius-md);
  background: rgba(8, 18, 32, 0.78);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-lg);
  animation: float 5s ease-in-out infinite;
}

/* 右上角，浮在卡片顶沿之上（标题在卡片内左上，不冲突） */
.hero-float--1 {
  top: -1.8rem;
  right: -1.2rem;
}

/* 左侧中部外缘 */
.hero-float--2 {
  top: 52%;
  left: -15rem;
  animation-delay: 1.2s;
}

/* 右下角外缘 */
.hero-float--3 {
  bottom: 0.6rem;
  right: -0.8rem;
  animation-delay: 2.4s;
}

.hero-float__icon {
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 1rem;
  background: var(--grad-accent);
  display: grid;
  place-items: center;
  color: #042b22;
}

.hero-float__icon svg {
  width: 2rem;
  height: 2rem;
}

.hero-float__text strong {
  display: block;
  font-size: var(--fs-sm);
  color: #fff;
}

.hero-float__text span {
  font-size: var(--fs-xs);
  color: #9fb2c5;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-1.2rem);
  }
}

/* 向下滚动提示（移到右下角，避免与底部居中的轮播指示点重叠） */
.hero__scroll {
  position: absolute;
  right: 3.2rem;
  bottom: 2.8rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--fs-xs);
  color: #8fa3b7;
}

.hero__scroll .mouse {
  width: 2.4rem;
  height: 3.8rem;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 1.4rem;
  position: relative;
}

.hero__scroll .mouse::before {
  content: "";
  position: absolute;
  top: 0.6rem;
  left: 50%;
  transform: translateX(-50%);
  width: 0.4rem;
  height: 0.8rem;
  border-radius: 2px;
  background: var(--color-accent);
  animation: wheel 1.6s ease-in-out infinite;
}

@keyframes wheel {
  0% {
    opacity: 0;
    transform: translate(-50%, 0);
  }
  40% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, 1rem);
  }
}

/* ==========================================================================
   2. 客户常见问题
   ========================================================================== */
.problems__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.4rem;
}

.problem-card {
  position: relative;
  padding: 3.2rem 2.8rem;
  border-radius: var(--radius-lg);
  background: var(--grad-card);
  border: 1px solid var(--color-line);
  transition: transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  overflow: hidden;
}

.problem-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--grad-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}

@media (hover: hover) {
  .problem-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
  }

  .problem-card:hover::after {
    transform: scaleX(1);
  }
}

.problem-card__icon {
  width: 5.2rem;
  height: 5.2rem;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: rgba(0, 212, 180, 0.1);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.problem-card__icon svg {
  width: 2.8rem;
  height: 2.8rem;
}

.problem-card__q {
  font-size: var(--fs-h4);
  color: var(--color-ink);
  margin-bottom: 1rem;
}

.problem-card__a {
  font-size: var(--fs-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ==========================================================================
   3. 选项卡（产品中心入口）
   ========================================================================== */
.tabs__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: var(--space-5);
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.1rem 2.2rem;
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-bg-metal);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  transition: all var(--dur) var(--ease);
}

.tab-btn svg {
  width: 1.9rem;
  height: 1.9rem;
}

@media (hover: hover) {
  .tab-btn:hover {
    color: var(--color-primary);
  }
}

.tab-btn.is-active {
  color: #fff;
  background: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
  animation: fadeUp 0.5s var(--ease);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(1.6rem);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.4rem;
}

.product-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  overflow: hidden;
  transition: transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

@media (hover: hover) {
  .product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
  }
}

/* 产品封面图 */
.product-card__cover {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg-metal);
}

.product-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}

@media (hover: hover) {
  .product-card:hover .product-card__cover img {
    transform: scale(1.06);
  }
}

/* 封面图角标 */
.product-card__badge {
  position: absolute;
  top: 1.2rem;
  left: 1.2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-pill);
  background: rgba(8, 18, 32, 0.72);
  color: var(--color-accent-soft);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.product-card__badge svg {
  width: 1.4rem;
  height: 1.4rem;
}

.product-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 2.4rem;
}

.product-card__name {
  font-size: var(--fs-h4);
  color: var(--color-ink);
  margin-bottom: 0.8rem;
}

.product-card__meta {
  font-size: var(--fs-sm);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

.product-card__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-3);
  flex: 1;
}

.product-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: var(--space-3);
}

.tag {
  font-size: var(--fs-xs);
  font-weight: 500;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-pill);
  background: var(--color-bg-soft);
  color: var(--color-text-muted);
}

.tabs__more {
  text-align: center;
  margin-top: var(--space-5);
}

/* ==========================================================================
   4. 重点解决方案
   ========================================================================== */
.solutions__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.8rem;
}

.solution-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

@media (hover: hover) {
  .solution-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 212, 180, 0.5);
  }
}

.solution-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.solution-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}

@media (hover: hover) {
  .solution-card:hover .solution-card__media img {
    transform: scale(1.06);
  }
}

.solution-card__tag {
  position: absolute;
  top: 1.6rem;
  left: 1.6rem;
  padding: 0.6rem 1.2rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-pill);
  background: rgba(8, 18, 32, 0.7);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--color-accent-soft);
}

.solution-card__body {
  padding: 2.4rem;
}

.solution-card__title {
  font-size: var(--fs-h4);
  color: #fff;
  margin-bottom: 1rem;
}

.solution-card__desc {
  font-size: var(--fs-base);
  color: #a9b8c9;
  line-height: 1.75;
  margin-bottom: var(--space-3);
}

.solution-card__metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: var(--space-3);
}

.metric {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-xs);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(0, 212, 180, 0.1);
  color: var(--color-accent-soft);
}

.metric svg {
  width: 1.4rem;
  height: 1.4rem;
}

.solution-card__link {
  color: var(--color-accent);
}

/* ==========================================================================
   5. 技术与服务能力
   ========================================================================== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.4rem;
}

.service-card {
  position: relative;
  padding: 3.2rem 2.8rem;
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  transition: transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

@media (hover: hover) {
  .service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
  }
}

.service-card__num {
  position: absolute;
  top: 2.4rem;
  right: 2.8rem;
  font-size: 4rem;
  font-weight: 800;
  color: var(--color-bg-metal);
  line-height: 1;
}

.service-card__icon {
  width: 5.6rem;
  height: 5.6rem;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: var(--grad-accent);
  color: #042b22;
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-accent);
}

.service-card__icon svg {
  width: 3rem;
  height: 3rem;
}

.service-card__title {
  font-size: var(--fs-h4);
  color: var(--color-ink);
  margin-bottom: 1rem;
}

.service-card__desc {
  font-size: var(--fs-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ==========================================================================
   6. 典型应用案例
   ========================================================================== */
.cases__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.4rem;
}

.case-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  transition: transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

@media (hover: hover) {
  .case-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
  }
}

.case-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.case-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}

@media (hover: hover) {
  .case-card:hover .case-card__media img {
    transform: scale(1.06);
  }
}

.case-card__industry {
  position: absolute;
  bottom: 1.2rem;
  left: 1.2rem;
  padding: 0.5rem 1.1rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-pill);
  background: rgba(8, 18, 32, 0.78);
  color: #fff;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.case-card__body {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.case-card__title {
  font-size: var(--fs-lg);
  color: var(--color-ink);
  line-height: 1.4;
  margin-bottom: 1rem;
}

.case-card__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-3);
  flex: 1;
}

/* ==========================================================================
   7. 合作流程
   ========================================================================== */
.process {
  position: relative;
}

.process__track {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.6rem;
  position: relative;
}

/* 连接线 */
.process__track::before {
  content: "";
  position: absolute;
  top: 3rem;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(
    90deg,
    rgba(0, 212, 180, 0.15),
    rgba(0, 212, 180, 0.6),
    rgba(0, 212, 180, 0.15)
  );
  z-index: 0;
}

.process-step {
  position: relative;
  z-index: 1;
  text-align: center;
}

.process-step__dot {
  width: 6rem;
  height: 6rem;
  margin: 0 auto var(--space-3);
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--color-bg);
  border: 2px solid rgba(0, 212, 180, 0.4);
  color: var(--color-primary);
  font-weight: 800;
  font-size: var(--fs-h4);
  transition: all var(--dur) var(--ease);
}

.section--dark .process-step__dot {
  background: var(--color-dark-2);
  color: #fff;
}

@media (hover: hover) {
  .process-step:hover .process-step__dot {
    background: var(--grad-accent);
    color: #042b22;
    border-color: transparent;
    transform: scale(1.08);
  }
}

.process-step__title {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 0.6rem;
}

.section--dark .process-step__title {
  color: #fff;
}

.process-step__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.section--dark .process-step__desc {
  color: #a9b8c9;
}

/* ==========================================================================
   8. 技术文章
   ========================================================================== */
.articles__layout {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.4rem;
}

.article-card {
  display: flex;
  flex-direction: column;
  padding: 2.4rem;
  border-radius: var(--radius-lg);
  background: var(--grad-card);
  border: 1px solid var(--color-line);
  transition: transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

@media (hover: hover) {
  .article-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
  }
}

.article-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: var(--space-3);
}

.article-card__cat {
  font-size: var(--fs-xs);
  font-weight: 600;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-pill);
  background: rgba(0, 212, 180, 0.1);
  color: var(--color-cta);
}

.article-card__date {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-xs);
  color: var(--color-text-light);
  white-space: nowrap;
}

.article-card__date svg {
  width: 1.4rem;
  height: 1.4rem;
}

.article-card__title {
  font-size: 1.7rem;
  color: var(--color-ink);
  line-height: 1.45;
  margin-bottom: 1.2rem;
  overflow: visible;
  white-space: normal;
}

.article-card__title a {
  color: inherit;
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color var(--dur) var(--ease);
}

@media (hover: hover) {
  .article-card__title a:hover {
    color: var(--color-accent);
  }
}

.article-card__title a:active {
  color: var(--color-accent);
}

.article-card__excerpt {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-3);
  min-height: 4.8rem;
  flex: 0 0 auto;
}

.article-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: var(--color-text-light);
  margin-top: auto;
}

/* ==========================================================================
   9. 底部咨询区（CTA + 表单）
   ========================================================================== */
.cta {
  position: relative;
  background: var(--grad-hero);
  color: #fff;
  overflow: hidden;
}

.cta__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.cta__bg::before {
  content: "";
  position: absolute;
  width: 50rem;
  height: 50rem;
  top: -20rem;
  right: -10rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 180, 0.4), transparent 65%);
  filter: blur(60px);
}

.cta__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: stretch;
}

/* 左列竖向布局，图片置于文字下方并撑到底部 */
.cta__text {
  display: flex;
  flex-direction: column;
}

/* 工厂全景图（位于文字下方） */
.cta__photo {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 24rem;
  margin-top: var(--space-4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-float);
}

.cta__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cta__photo-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.4rem 2rem 1.6rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: #fff;
  background: linear-gradient(transparent, rgba(6, 24, 41, 0.85));
}

.cta__title {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-3);
}

.cta__desc {
  font-size: var(--fs-lg);
  color: #c0cfdf;
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.cta__points {
  display: grid;
  gap: 1.2rem;
}

.cta__point {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: var(--fs-base);
  color: #d6e1ec;
}

.cta__point svg {
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  color: var(--color-accent);
}

/* 表单卡 */
.cta-form {
  padding: 3.6rem;
  border-radius: var(--radius-xl);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-float);
}

.cta-form__title {
  font-size: var(--fs-h3);
  color: #fff;
  margin-bottom: 0.6rem;
}

.cta-form__sub {
  font-size: var(--fs-sm);
  color: #a9bccf;
  margin-bottom: var(--space-4);
}

/* ==========================================================================
   信任条（hero 下方滚动品牌/行业带）
   ========================================================================== */
.trust {
  background: var(--color-primary-deep);
  padding-block: 3.2rem;
}

.trust__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2.4rem;
}

.trust__label {
  font-size: var(--fs-sm);
  color: #8fa3b7;
  white-space: nowrap;
}

.trust__items {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.4rem;
}

.trust__item {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-size: var(--fs-base);
  font-weight: 600;
  color: #d6e1ec;
}

.trust__item svg {
  width: 2rem;
  height: 2rem;
  color: var(--color-accent);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1120px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

  .hero__visual {
    max-width: 52rem;
  }

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

  .cta__inner {
    grid-template-columns: 1fr;
    gap: 3.6rem;
  }

  .cta__photo {
    min-height: 20rem;
    margin-bottom: var(--space-3);
  }
}

/* 大屏以下：4列降3列、3列降2列 */
@media (max-width: 1200px) {
  .cases__grid,
  .articles__layout {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 960px) {
  .problems__grid,
  .services__grid,
  .cases__grid,
  .articles__layout,
  .solutions__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process__track {
    grid-template-columns: repeat(3, 1fr);
    gap: 3.2rem 1.6rem;
  }

  .process__track::before {
    display: none;
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding-block: 12rem 6rem;
  }

  .hero__scroll {
    display: none;
  }

  .hero__visual {
    width: 100%;
    max-width: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
  }

  .hero-card {
    grid-column: 1 / -1;
  }

  .hero-float {
    position: static;
    min-width: 0;
    min-height: 0;
    padding: 1rem;
    gap: 0.8rem;
    border-radius: 1.4rem;
    animation: none;
    transform: none;
  }

  .hero-float--1,
  .hero-float--2,
  .hero-float--3 {
    inset: auto;
  }

  .hero-float__icon {
    width: 3.2rem;
    height: 3.2rem;
    flex: 0 0 3.2rem;
    border-radius: 1rem;
  }

  .hero-float__text strong {
    font-size: 1.3rem;
    line-height: 1.35;
  }

  .hero-float__text span {
    display: block;
    margin-top: 0.2rem;
    line-height: 1.4;
  }

  .article-card__title {
    font-size: 1.6rem;
  }
}

@media (max-width: 560px) {
  .problems__grid,
  .product-grid,
  .services__grid,
  .cases__grid,
  .articles__layout,
  .solutions__grid {
    grid-template-columns: 1fr;
  }

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

  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }

  .hero__visual {
    grid-template-columns: 1fr;
  }

  .hero-card {
    padding: 2.4rem;
  }

  .hero-float {
    padding: 1.1rem 1.2rem;
  }

  .tabs__nav {
    gap: 0.6rem;
  }

  .tab-btn {
    padding: 1rem 1.6rem;
    font-size: var(--fs-sm);
  }
}