/* ========================================
   尚易科技官网 - 样式表
   基于 Pencil 设计文件实现
======================================== */

/* CSS 变量 - 设计系统 */
:root {
  /* 颜色 */
  --color-bg-primary: #0A0F1C;
  --color-bg-secondary: #0F172A;
  --color-bg-tertiary: #1E293B;
  --color-accent: #22D3EE;
  --color-accent-hover: #06B6D4;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #94A3B8;
  --color-text-muted: #64748B;
  --color-border: #1E293B;
  
  /* 字体 */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* 间距 */
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 80px;
  
  /* 容器 */
  --container-max: 1440px;
  --container-padding: 120px;
  --container-padding-mobile: 24px;
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* 重置样式 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* ========================================
   通用组件
======================================== */

/* 容器 */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--container-padding-mobile);
  }
}

/* 区块 */
.section {
  padding: var(--spacing-3xl) 0;
}

.section--dark {
  background-color: var(--color-bg-primary);
}

.section--light {
  background-color: var(--color-bg-secondary);
}

/* 区块标题 */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-bg-primary);
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn--outline {
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  background: transparent;
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 16px;
}

/* 卡片 */
.card {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

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

.card__title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.card__text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-md);
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 500;
}

.card__link:hover {
  gap: var(--spacing-sm);
}

/* 图标 */
.icon {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

.icon--large {
  width: 48px;
  height: 48px;
}

/* ========================================
   导航栏
======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-normal);
}

.header--scrolled {
  background-color: rgba(10, 15, 28, 0.95);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header__logo img {
  height: 40px;
  width: auto;
}

.header__logo-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  padding: 8px 0;
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--color-text-primary);
}

.header__nav-link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.header__nav-item:hover .header__nav-link svg {
  transform: rotate(180deg);
}

/* 下拉菜单 */
.header__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 200px;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 100;
  margin-top: 8px;
}

.header__dropdown::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
}

.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
}

.header__dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 14px;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.header__dropdown-link:hover {
  background-color: rgba(34, 211, 238, 0.1);
  color: var(--color-accent);
}

.header__dropdown-link svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
}

.header__cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* 移动端菜单按钮 */
.header__menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.header__menu-btn span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

@media (max-width: 968px) {
  .header__nav,
  .header__cta {
    display: none;
  }
  
  .header__menu-btn {
    display: flex;
  }
}

/* 移动端导航菜单 */
.mobile-nav {
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-bg-primary);
  padding: var(--spacing-lg);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  z-index: 999;
  overflow-y: auto;
}

.mobile-nav--open {
  transform: translateX(0);
}

.mobile-nav__link {
  display: block;
  padding: var(--spacing-md) 0;
  font-size: 18px;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__link:hover {
  color: var(--color-text-primary);
}

/* 移动端下拉菜单 */
.mobile-nav__group {
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__group-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  font-size: 18px;
  color: var(--color-text-secondary);
  cursor: pointer;
}

.mobile-nav__group-title svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

.mobile-nav__group.open .mobile-nav__group-title svg {
  transform: rotate(180deg);
}

.mobile-nav__group-title:hover {
  color: var(--color-text-primary);
}

.mobile-nav__submenu {
  display: none;
  padding-left: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
}

.mobile-nav__group.open .mobile-nav__submenu {
  display: block;
}

.mobile-nav__submenu-link {
  display: block;
  padding: var(--spacing-sm) 0;
  font-size: 16px;
  color: var(--color-text-muted);
}

.mobile-nav__submenu-link:hover {
  color: var(--color-accent);
}

.mobile-nav__cta {
  margin-top: var(--spacing-lg);
}

.mobile-nav__cta .btn {
  width: 100%;
}

/* ========================================
   Hero 区块
======================================== */
.hero {
  position: relative;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 80px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero__bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(8px);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center 30%, rgba(10, 15, 28, 0.4) 0%, rgba(10, 15, 28, 0.9) 85%);
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: var(--spacing-3xl) var(--spacing-lg);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 50px;
  font-size: 12px;
  color: var(--color-accent);
  margin-bottom: var(--spacing-lg);
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero__title {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
}

.hero__subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .hero {
    min-height: 600px;
  }
  
  .hero__title {
    font-size: 36px;
  }
  
  .hero__subtitle {
    font-size: 16px;
  }
}

/* ========================================
   优势区块
======================================== */
.advantages__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.advantage-card {
  background-color: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.advantage-card:hover {
  border-color: var(--color-accent);
  background-color: rgba(30, 41, 59, 0.8);
}

.advantage-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.2), rgba(34, 211, 238, 0.05));
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.advantage-card__title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.advantage-card__text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .advantages__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .advantages__grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   核心业务区块
======================================== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.service-card {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.3);
}

.service-card__image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.service-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.service-card:hover .service-card__image img {
  transform: scale(1.05);
}

.service-card__icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(34, 211, 238, 0.9);
  border-radius: var(--radius-lg);
  color: var(--color-bg-primary);
}

.service-card__content {
  padding: var(--spacing-lg);
}

.service-card__title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.service-card__text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 500;
}

.service-card__link svg {
  transition: transform var(--transition-fast);
}

.service-card__link:hover svg {
  transform: translateX(4px);
}

@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .services__grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   解决方案区块
======================================== */
.solutions__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.solution-card {
  position: relative;
  height: 320px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
}

.solution-card__bg {
  position: absolute;
  inset: 0;
}

.solution-card__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.solution-card:hover .solution-card__bg img {
  transform: scale(1.1);
}

.solution-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 15, 28, 0.95), rgba(10, 15, 28, 0.3));
}

.solution-card__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-lg);
  z-index: 2;
}

.solution-card__badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: rgba(34, 211, 238, 0.2);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
}

.solution-card__title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.solution-card__text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .solutions__grid {
    grid-template-columns: 1fr;
  }
  
  .solution-card {
    height: 280px;
  }
}

/* ========================================
   CTA 区块
======================================== */
.cta {
  position: relative;
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(180deg, #1E3A5F 0%, var(--color-bg-primary) 100%);
  text-align: center;
}

.cta__content {
  max-width: 800px;
  margin: 0 auto;
}

.cta__title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.cta__text {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
}

.cta__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ========================================
   页脚
======================================== */
.footer {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.footer__logo img {
  height: 40px;
}

.footer__logo-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.footer__desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.footer__column-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: 14px;
  color: var(--color-text-secondary);
}

.footer__contact-item svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.footer__divider {
  height: 1px;
  background-color: var(--color-border);
  margin-bottom: var(--spacing-lg);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer__copyright {
  font-size: 14px;
  color: var(--color-text-muted);
}

.footer__legal {
  display: flex;
  gap: var(--spacing-lg);
}

.footer__legal-link {
  font-size: 14px;
  color: var(--color-text-muted);
}

.footer__legal-link:hover {
  color: var(--color-text-secondary);
}

@media (max-width: 968px) {
  .footer__main {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer__brand {
    grid-column: span 2;
    max-width: 100%;
    margin-bottom: var(--spacing-lg);
  }
}

@media (max-width: 640px) {
  .footer__main {
    grid-template-columns: 1fr;
  }
  
  .footer__brand {
    grid-column: span 1;
  }
  
  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ========================================
   业务详情页
======================================== */
.page-hero {
  padding: 160px 0 80px;
  background-color: var(--color-bg-primary);
}

.page-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.page-hero__breadcrumb a {
  color: var(--color-text-muted);
}

.page-hero__breadcrumb a:hover {
  color: var(--color-text-secondary);
}

.page-hero__breadcrumb span {
  color: var(--color-accent);
}

.page-hero__content {
  display: grid;
  grid-template-columns: 1fr 450px;
  gap: var(--spacing-2xl);
  align-items: center;
}

.page-hero__title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}

.page-hero__text {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-xl);
}

.page-hero__image {
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.page-hero__image img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

@media (max-width: 968px) {
  .page-hero__content {
    grid-template-columns: 1fr;
  }
  
  .page-hero__title {
    font-size: 36px;
  }
  
  .page-hero__image {
    order: -1;
  }
}

/* 能力卡片网格 */
.capabilities__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.capability-card {
  background-color: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.capability-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.capability-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.2), rgba(34, 211, 238, 0.05));
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.capability-card__title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.capability-card__text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .capabilities__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .capabilities__grid {
    grid-template-columns: 1fr;
  }
}

/* 流程时间线 */
.process__timeline {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--spacing-md);
}

.process-step {
  text-align: center;
}

.process-step__number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent), #0891B2);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-bg-primary);
  margin: 0 auto var(--spacing-md);
}

.process-step__title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.process-step__text {
  font-size: 12px;
  color: var(--color-text-muted);
}

@media (max-width: 968px) {
  .process__timeline {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .process__timeline {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   联系我们页
======================================== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact__info {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
}

.contact__info-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.contact__info-item {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact__info-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(34, 211, 238, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact__info-label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.contact__info-value {
  font-size: 16px;
  color: var(--color-text-primary);
}

.contact__form {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
}

.contact__form-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

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

.form-label {
  display: block;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

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

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

@media (max-width: 968px) {
  .contact__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   解决方案详情页
======================================== */
.solution-detail {
  padding: var(--spacing-3xl) 0;
}

.solution-detail__header {
  margin-bottom: var(--spacing-2xl);
}

.solution-detail__badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: rgba(34, 211, 238, 0.1);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
}

.solution-detail__title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.solution-detail__subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 800px;
}

.solution-detail__content {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--spacing-2xl);
}

.solution-detail__main h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.solution-detail__main h3:first-child {
  margin-top: 0;
}

.solution-detail__main p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.solution-detail__main ul {
  margin-bottom: var(--spacing-md);
}

.solution-detail__main li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}

.solution-detail__main li::before {
  content: '';
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
  margin-top: 10px;
  flex-shrink: 0;
}

.solution-detail__sidebar {
  position: sticky;
  top: 100px;
}

.solution-detail__image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

.solution-detail__image img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.solution-detail__features {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.solution-detail__features-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.solution-detail__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.solution-detail__feature svg {
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

@media (max-width: 968px) {
  .solution-detail__content {
    grid-template-columns: 1fr;
  }
  
  .solution-detail__sidebar {
    position: static;
  }
}

/* ========================================
   动画
======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 延迟动画 */
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }