/* ============================================================
   解决方案详情页专属样式（solutions.html）
   配色：青蓝商务风 — 主色 #15B0ED / 深色 #0E8FC0 / 浅色 #3ec3f0 /  accent #0891b2
   ============================================================ */

:root {
  --sol-primary: #15B0ED;
  --sol-primary-dark: #0E8FC0;
  --sol-primary-light: #3ec3f0;
  --sol-accent: #0891b2;
  --sol-text-dark: #0F2F3F;
  --sol-text-body: #5F5D5D;
  --sol-text-light: #94a3b8;
  --sol-bg-light: #f6fbfe;
  --sol-border: #e2e8f0;
  --sol-gradient-1: linear-gradient(135deg, #15B0ED 0%, #0E8FC0 100%);
  --sol-shadow-sm: 0 2px 8px rgba(21, 176, 237, 0.06);
  --sol-shadow-md: 0 8px 30px rgba(21, 176, 237, 0.1);
  --sol-shadow-lg: 0 20px 60px rgba(21, 176, 237, 0.12);
  --sol-radius: 16px;
}

/* ========== Hero 区（白底 + 科技网格 + stream 动效，与首页一致） ========== */
.sol-hero {
  position: relative;
  min-height: calc(100vh - 76px);
  margin-top: 76px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 30px 80px;
  overflow: hidden;
  background: #ffffff;
  isolation: isolate;
  z-index: 1;
}

.sol-hero .hero-grid,
.sol-hero .hero-scan,
.sol-hero .banner-fx {
  position: absolute;
}

.sol-hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.sol-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(21, 176, 237, 0.08);
  border: 1px solid rgba(21, 176, 237, 0.18);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--sol-primary-dark);
  margin-bottom: 28px;
  opacity: 0;
  animation: solFadeInUp 0.8s ease forwards;
}

.sol-hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--sol-accent);
  border-radius: 50%;
  animation: solPulse 2s ease-in-out infinite;
}

@keyframes solPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.sol-hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--sol-text-dark);
  margin-bottom: 24px;
  opacity: 0;
  animation: solFadeInUp 0.8s ease 0.15s forwards;
}

.sol-gradient-text {
  background: var(--sol-gradient-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sol-hero p {
  font-size: 18px;
  color: var(--sol-text-body);
  max-width: 600px;
  margin: 0 auto 36px;
  opacity: 0;
  animation: solFadeInUp 0.8s ease 0.3s forwards;
}

.sol-hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 48px;
  opacity: 0;
  animation: solFadeInUp 0.8s ease 0.45s forwards;
}

.sol-hero-stat { text-align: center; }

.sol-hero-stat-num {
  font-size: 36px;
  font-weight: 800;
  background: var(--sol-gradient-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sol-hero-stat-label {
  font-size: 14px;
  color: var(--sol-text-light);
  margin-top: 4px;
}

@keyframes solFadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== 通用 Section ========== */
.sol-section {
  padding: 100px 32px;
  position: relative;
}

.sol-section-container {
  max-width: 1280px;
  margin: 0 auto;
}

.sol-section-header {
  text-align: center;
  margin-bottom: 64px;
}

.sol-section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(21, 176, 237, 0.08);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--sol-primary-dark);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.sol-section-title {
  font-size: 40px;
  font-weight: 800;
  color: var(--sol-text-dark);
  margin-bottom: 16px;
}

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

/* ========== 业务场景解决方案 ========== */
.sol-business-section {
  background: var(--sol-bg-light);
}

.sol-category-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.sol-category-tab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: #fff;
  border: 1px solid var(--sol-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 15px;
  font-weight: 600;
  color: var(--sol-text-body);
  position: relative;
  overflow: hidden;
}

.sol-category-tab::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--sol-gradient-1);
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 0;
}

.sol-category-tab > * {
  position: relative;
  z-index: 1;
}

.sol-category-tab:hover {
  border-color: var(--sol-primary);
  color: var(--sol-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--sol-shadow-sm);
}

.sol-category-tab.active {
  color: #fff;
  border-color: transparent;
  box-shadow: 0 8px 24px rgba(21, 176, 237, 0.25);
}

.sol-category-tab.active::before { opacity: 1; }

.sol-category-tab.active .sol-tab-icon {
  background: rgba(255, 255, 255, 0.2);
}

.sol-tab-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  background: rgba(21, 176, 237, 0.1);
  transition: background 0.3s;
}

/* Tab 内容切换 */
.sol-tab-content {
  display: none;
  animation: solFadeInUp 0.5s ease;
}

.sol-tab-content.active { display: block; }

/* 解决方案卡片网格 */
.sol-solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.sol-solution-card {
  background: #fff;
  border: 1px solid var(--sol-border);
  border-radius: var(--sol-radius);
  padding: 32px 28px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.sol-solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--sol-gradient-1);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.sol-solution-card::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(21, 176, 237, 0.06), transparent);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.4s;
}

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

.sol-solution-card:hover::before { transform: scaleX(1); }
.sol-solution-card:hover::after { opacity: 1; }

.sol-card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
  position: relative;
  transition: transform 0.3s;
}

.sol-solution-card:hover .sol-card-icon {
  transform: scale(1.1) rotate(-5deg);
}

/* 图标底色（青蓝为主，绿/橙保留但降低饱和度，无紫色） */
.sol-card-icon-blue   { background: linear-gradient(135deg, #e0f5fd, #bae9fa); color: #0E8FC0; }
.sol-card-icon-cyan   { background: linear-gradient(135deg, #d9f3f9, #b7e7f2); color: #0891b2; }
.sol-card-icon-purple { background: linear-gradient(135deg, #d6f0fb, #aedff5); color: #0E8FC0; }
.sol-card-icon-green  { background: linear-gradient(135deg, #dcf2e8, #c0e8d6); color: #3d9970; }
.sol-card-icon-orange { background: linear-gradient(135deg, #fbe8d8, #f6d9c0); color: #d07a3e; }
.sol-card-icon-pink   { background: linear-gradient(135deg, #fae3ec, #f5cfdd); color: #c2527e; }
.sol-card-icon-indigo { background: linear-gradient(135deg, #d4effc, #abe0f6); color: #0891b2; }
.sol-card-icon-teal   { background: linear-gradient(135deg, #d5f2ee, #b3e6de); color: #2a9d8f; }

.sol-card-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--sol-text-dark);
  margin-bottom: 10px;
}

.sol-card-desc {
  font-size: 14px;
  color: var(--sol-text-body);
  line-height: 1.6;
  margin-bottom: 20px;
}

.sol-card-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sol-card-feature {
  font-size: 12px;
  padding: 4px 12px;
  background: var(--sol-bg-light);
  border-radius: 100px;
  color: var(--sol-text-body);
  font-weight: 500;
  transition: all 0.2s;
}

.sol-solution-card:hover .sol-card-feature {
  background: rgba(21, 176, 237, 0.08);
  color: var(--sol-primary-dark);
}

.sol-card-arrow {
  position: absolute;
  bottom: 28px;
  right: 28px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--sol-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  opacity: 0;
}

.sol-solution-card:hover .sol-card-arrow {
  opacity: 1;
  background: var(--sol-gradient-1);
  color: #fff;
}

.sol-card-arrow svg {
  width: 16px;
  height: 16px;
}

/* ========== 行业解决方案 ========== */
.sol-industry-section {
  background: #fff;
}

.sol-industry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.sol-industry-card {
  background: #fff;
  border: 1px solid var(--sol-border);
  border-radius: var(--sol-radius);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  cursor: pointer;
}

.sol-industry-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sol-shadow-lg);
  border-color: transparent;
}

.sol-industry-card-header {
  padding: 36px 32px 28px;
  position: relative;
  overflow: hidden;
}

.sol-industry-card-bg {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  transition: opacity 0.4s;
}

.sol-industry-card:hover .sol-industry-card-bg { opacity: 0.12; }

.sol-industry-icon {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
  transition: transform 0.3s;
}

.sol-industry-card:hover .sol-industry-icon { transform: scale(1.1); }

.sol-industry-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--sol-text-dark);
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.sol-industry-tagline {
  font-size: 14px;
  color: var(--sol-text-light);
  position: relative;
  z-index: 1;
}

.sol-industry-card-body {
  padding: 0 32px 32px;
}

.sol-industry-desc {
  font-size: 14px;
  color: var(--sol-text-body);
  line-height: 1.7;
  margin-bottom: 20px;
}

.sol-industry-points {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sol-industry-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--sol-text-body);
  padding: 8px 0;
  border-top: 1px solid var(--sol-border);
}

.sol-industry-points li:first-child { border-top: none; }

.sol-industry-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(21, 176, 237, 0.1);
  color: var(--sol-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ========== CTA 区域 ========== */
.sol-cta-section {
  padding: 80px 32px;
  background: #fff;
}

.sol-cta-container {
  max-width: 1080px;
  margin: 0 auto;
  background: var(--sol-gradient-1);
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.sol-cta-container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15), transparent);
  border-radius: 50%;
}

.sol-cta-container::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(8, 145, 178, 0.25), transparent);
  border-radius: 50%;
}

.sol-cta-content {
  position: relative;
  z-index: 1;
}

.sol-cta-title {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.sol-cta-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
}

.sol-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: #fff;
  color: var(--sol-primary-dark);
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.sol-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

/* ========== 滚动揭示动画 ========== */
.sol-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.sol-reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .sol-hero h1 { font-size: 36px; }
  .sol-hero-stats { gap: 24px; }
  .sol-hero-stat-num { font-size: 28px; }
  .sol-section-title { font-size: 30px; }
  .sol-section { padding: 64px 20px; }
  .sol-solutions-grid { grid-template-columns: 1fr; }
  .sol-industry-grid { grid-template-columns: 1fr; }
  .sol-cta-title { font-size: 26px; }
  .sol-cta-container { padding: 40px 24px; }
}