/* ========================================
   首页样式表 - 水米田农业官网
   ======================================== */

/* 英雄区 */
.hero {
  position: relative;
  margin-top: 82px;
  padding: var(--spacing-6xl) 0 var(--spacing-5xl);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(27, 106, 201, 0.18), transparent 58%), radial-gradient(circle at bottom left, rgba(31, 122, 77, 0.22), transparent 52%);
  z-index: -2;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.65));
  z-index: -3;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: var(--spacing-4xl);
  align-items: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  max-width: 640px;
}

.hero-copy h1 {
  font-size: var(--font-size-6xl);
  line-height: 1.12;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
}

.hero-actions .btn {
  min-width: 200px;
  font-size: var(--font-size-lg);
  padding: var(--spacing-lg) var(--spacing-3xl);
}

.hero-metrics .smtn-metric {
  padding: var(--spacing-2xl);
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(190, 201, 195, 0.35);
}

.smtn-metric__value-number {
  display: inline-block;
  font-variant-numeric: tabular-nums;
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
}

.hero-media {
  position: relative;
  border-radius: var(--radius-3xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  width: 100%;
  aspect-ratio: 4 / 5;
  border: 1px solid rgba(190, 201, 195, 0.35);
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.12), transparent 70%);
}

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

.hero-media:hover .hero-img {
  transform: scale(1.04);
}

.hero-floating-card {
  position: absolute;
  width: 320px;
  padding: var(--spacing-2xl);
  border-radius: var(--radius-2xl);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(190, 201, 195, 0.35);
  backdrop-filter: blur(16px);
}

.hero-floating-card ul {
  margin: var(--spacing-lg) 0 0;
  padding-left: var(--spacing-xl);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.hero-floating-card--quality {
  left: -40px;
  bottom: 40px;
  animation: smtnFloat 7s ease-in-out infinite;
}

.hero-floating-card--trace {
  right: -20px;
  top: 20px;
  max-width: 280px;
  animation: smtnFloat 6.5s ease-in-out infinite;
  animation-delay: 1.2s;
}

.hero-floating-badge {
  display: inline-flex;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(27, 106, 201, 0.12);
  color: var(--secondary-dark);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--spacing-md);
}

/* 版块头部 */
.section-header {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  align-items: center;
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.section-header h3 {
  font-size: var(--font-size-3xl);
  font-weight: 600;
}

/* 能力矩阵 */
.section-overview {
  position: relative;
  padding-bottom: var(--spacing-5xl);
}

.section-overview::before {
  content: "";
  position: absolute;
  inset: 12% 8% auto 8%;
  height: 320px;
  background: linear-gradient(120deg, rgba(31, 122, 77, 0.12), rgba(27, 106, 201, 0.08));
  filter: blur(120px);
  opacity: 0.7;
  z-index: -1;
}

.smtn-feature-card ul {
  margin-top: var(--spacing-lg);
  color: var(--text-muted);
}

.smtn-feature-card li {
  list-style: disc;
}

/* 解决方案 */
.section-solutions {
  position: relative;
  overflow: hidden;
}

.section-solutions::before {
  content: "";
  position: absolute;
  inset: -20% -20% auto 30%;
  height: 240px;
  background: radial-gradient(circle, rgba(27, 106, 201, 0.22), transparent 60%);
  filter: blur(80px);
  opacity: 0.7;
}

.solutions-header {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: var(--spacing-3xl);
  align-items: center;
  margin-bottom: var(--spacing-3xl);
}

.solutions-description {
  text-align: left;
}

.solutions-description h3 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-lg);
}

.solutions-description p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-2xl);
}

.solution-card {
  background: rgba(255, 255, 255, 0.92);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  border: 1px solid rgba(190, 201, 195, 0.35);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

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

.solution-card ul {
  margin: 0;
  padding-left: var(--spacing-xl);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.solution-panel {
  display: none;
}

.solution-panel.is-active,
.smtn-tab-panels[data-tab-group] > [data-tab-panel].is-active {
  display: block;
}

/* 价值链流程 */
.section-valuechain {
  position: relative;
}

.section-valuechain::before {
  content: "";
  position: absolute;
  inset: auto 10% -20% 10%;
  height: 260px;
  background: radial-gradient(circle, rgba(44, 102, 72, 0.18), transparent 70%);
  filter: blur(100px);
  opacity: 0.6;
}

.valuechain-process .smtn-process__item {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(190, 201, 195, 0.35);
}

/* 数字化板块 */
.digital-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: var(--spacing-3xl);
  align-items: stretch;
}

.digital-grid .smtn-media-card {
  height: 100%;
}

.digital-grid ul li {
  list-style: disc;
  margin-left: var(--spacing-lg);
}

/* ESG 折叠 */
.section-esg {
  background: linear-gradient(135deg, rgba(31, 122, 77, 0.08), rgba(27, 106, 201, 0.06));
}

.esg-wrapper {
  max-width: 880px;
  margin: 0 auto;
}

/* 新闻与洞察 */
.news-rich-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-2xl);
}

.news-card {
  background: rgba(255, 255, 255, 0.92);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid rgba(190, 201, 195, 0.35);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}

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

.news-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.news-content {
  padding: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  flex: 1;
}

.news-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(31, 122, 77, 0.12);
  color: var(--primary-dark);
  font-size: var(--font-size-xs);
  letter-spacing: 0.05em;
  font-weight: 600;
  width: max-content;
}

.news-date {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.news-title {
  font-size: var(--font-size-xl);
  line-height: 1.4;
  color: var(--text-primary);
}

.news-excerpt {
  color: var(--text-secondary);
  flex: 1;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--secondary-dark);
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--transition-base);
}

.read-more::after {
  content: "→";
  transition: transform var(--transition-base);
}

.read-more:hover {
  transform: translateX(4px);
}

.read-more:hover::after {
  transform: translateX(4px);
}

/* 合作伙伴 */
.section-partners {
  position: relative;
}

.section-partners::before {
  content: "";
  position: absolute;
  inset: auto 20% 0 20%;
  height: 160px;
  background: radial-gradient(circle, rgba(27, 106, 201, 0.16), transparent 70%);
  filter: blur(90px);
  opacity: 0.5;
}

.smtn-logo-wall {
  gap: var(--spacing-2xl);
  background: rgba(255, 255, 255, 0.88);
  border: 1px dashed rgba(190, 201, 195, 0.4);
}

.smtn-logo {
  background: rgba(31, 122, 77, 0.08);
  color: var(--primary-dark);
}

.smtn-logo:hover {
  background: rgba(27, 106, 201, 0.12);
  color: var(--secondary-dark);
}

/* CTA */
.section-cta .smtn-cta {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--spacing-3xl);
  align-items: center;
}

.cta-content h2 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
}

.cta-content p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
}

/* 响应式调整 */
@media (max-width: 1200px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
  }
  
  .hero-visual {
    justify-content: flex-start;
  }
  
  .hero-floating-card--quality {
    left: 20%;
    bottom: -40px;
  }
  
  .hero-floating-card--trace {
    right: 8%;
  }
}

@media (max-width: 992px) {
  .hero {
    margin-top: 72px;
    padding: var(--spacing-5xl) 0 var(--spacing-4xl);
  }
  
  .hero-actions .btn {
    min-width: 0;
  }
  
  .hero-floating-card {
    position: static;
    width: auto;
    margin-top: var(--spacing-2xl);
  }
  
  .hero-visual {
    flex-direction: column;
    padding: 0;
  }
  
  .solutions-header {
    grid-template-columns: 1fr;
  }
  
  .section-cta .smtn-cta {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero {
    margin-top: 64px;
  }
  
  .hero-copy h1 {
    font-size: var(--font-size-5xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .smtn-metric-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  
  .digital-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-floating-card {
    padding: var(--spacing-xl);
  }
}

@media (max-width: 576px) {
  .hero-copy h1 {
    font-size: var(--font-size-4xl);
  }
  
  .smtn-metric-list {
    grid-template-columns: 1fr;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .solution-grid,
  .news-rich-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-media {
    aspect-ratio: 3 / 4;
  }
  
  .cta-content h2 {
    font-size: var(--font-size-3xl);
  }
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-light);
}

/* 响应式设计 */
@media (max-width: 992px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: var(--spacing-2xl) 0;
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
    text-align: center;
  }

  .advantage-card {
    padding: var(--spacing-lg);
  }

  .advantage-icon {
    font-size: 40px;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero {
    padding: var(--spacing-2xl) 0;
    margin-top: 60px;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

  .advantage-icon {
    font-size: 36px;
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .news-image {
    height: 150px;
  }

  .contact-form {
    margin-top: var(--spacing-xl);
  }
}

@media (max-width: 576px) {
  .hero {
    padding: var(--spacing-xl) 0;
  }

  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-sm);
  }

  .hero-buttons {
    gap: var(--spacing-md);
  }

  .hero-buttons .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-sm);
  }

  .section {
    padding: var(--spacing-xl) 0;
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .section-subtitle {
    font-size: var(--font-size-sm);
  }

  .advantage-card {
    padding: var(--spacing-md);
  }

  .advantage-icon {
    font-size: 32px;
  }

  .news-image {
    height: 120px;
  }

  .contact-form {
    padding: var(--spacing-lg);
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeInUp 0.6s ease-out;
}

.card:nth-child(2) {
  animation-delay: 0.1s;
}

.card:nth-child(3) {
  animation-delay: 0.2s;
}

.card:nth-child(4) {
  animation-delay: 0.3s;
}