/* 中科软金官网 - 全局样式 */
:root {
  --color-primary: #0d47a1;
  --color-primary-light: #1565c0;
  --color-primary-dark: #002171;
  --color-text: #212121;
  --color-text-muted: #5a5a5a;
  --color-bg: #fafafa;
  --color-white: #fff;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.12);
  --radius: 8px;
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Noto Serif SC', 'Noto Sans SC', serif;
  --text-base: 1rem;
  --text-sm: 0.9375rem;
  --text-lg: 1.125rem;
  --leading-tight: 1.35;
  --leading-normal: 1.65;
  --leading-relaxed: 1.85;
  --tracking-tight: -0.02em;
  --tracking-normal: 0.01em;
  --tracking-wide: 0.04em;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== 导航 ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: inline-flex;
  align-items: center;
  height: 100%;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  color: var(--color-primary);
  text-decoration: none;
}

.logo-img {
  height: 100%;
  width: auto;
  vertical-align: middle;
  object-fit: contain;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 28px;
}

.nav-list a {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-list a:hover {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
}

/* ========== 轮播图 ========== */
.carousel-section {
  margin-top: 64px;
  height: 72vh;
  min-height: 360px;
  max-height: 680px;
}

#carouselMount {
  width: 100%;
  height: 100%;
}

.carousel {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 50%, #90caf9 100%);
  border-radius: 0 0 20px 20px;
  box-shadow: 0 8px 32px rgba(13, 71, 161, 0.12);
}

.carousel-inner {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s ease;
  pointer-events: none;
  background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 50%, #90caf9 100%);
}

.carousel-item.active {
  opacity: 1;
  pointer-events: auto;
  z-index: 1;
}

.carousel-item img {
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
}

.carousel-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 60px 40px 50px;
  background: linear-gradient(to top, rgba(13, 71, 161, 0.85) 0%, rgba(13, 71, 161, 0.4) 60%, transparent 100%);
  color: var(--color-white);
}

.carousel-caption h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  margin-bottom: 12px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.carousel-caption p {
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0.03em;
  opacity: 0.95;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 52px;
  height: 52px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--color-white);
  font-size: 26px;
  cursor: pointer;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.carousel-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.9);
  transform: translateY(-50%) scale(1.05);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
}

.carousel-prev { left: 24px; }
.carousel-next { right: 24px; }

.carousel-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 12px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: all 0.3s ease;
}

.dot.active {
  width: 28px;
  background: var(--color-white);
  box-shadow: 0 2px 8px rgba(13, 71, 161, 0.3);
}

.dot:hover:not(.active) {
  background: rgba(255, 255, 255, 0.7);
  transform: scale(1.15);
}

/* ========== 通用区块 ========== */
.section {
  padding: 40px 0;
}

.section + .section {
  padding-top: 20px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  color: var(--color-primary-dark);
  text-align: center;
  margin-bottom: 12px;
}

.section-desc {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  letter-spacing: 0.02em;
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== 关于我们 ========== */
.about {
  background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
  position: relative;
  overflow: hidden;
}

.about-bg-decoration {
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(13, 71, 161, 0.03) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  position: relative;
  z-index: 1;
}

.about-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  padding: 32px 28px 28px;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(13, 71, 161, 0.08);
  border: 1px solid rgba(13, 71, 161, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.about-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(13, 71, 161, 0.15);
}

.about-card:hover::before {
  transform: scaleX(1);
}

.about-card-main {
  background: linear-gradient(135deg, #ffffff 0%, #f0f7ff 100%);
  border: 1px solid rgba(13, 71, 161, 0.12);
}

.about-card-main::before {
  background: linear-gradient(90deg, #0d47a1, #1976d2, #42a5f5);
  transform: scaleX(1);
  height: 5px;
}

.about-card-copyright {
  background: linear-gradient(135deg, #ffffff 0%, #fff9f0 100%);
}

.about-card-copyright::before {
  background: linear-gradient(90deg, #e65100, #ff9800, #ffb74d);
}

.about-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}

.about-card-icon {
  transition: transform 0.3s ease;
}

.about-card:hover .about-card-icon {
  transform: scale(1.05);
}

.about-logo-img {
  width: 180px;
  height: 72px;
  object-fit: contain;
}

.about-card-badges {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-end;
}

.about-mini-badge {
  padding: 4px 10px;
  background: linear-gradient(135deg, rgba(13, 71, 161, 0.1), rgba(21, 101, 192, 0.1));
  color: var(--color-primary);
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 12px;
  border: 1px solid rgba(13, 71, 161, 0.15);
}

.about-card-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 16px;
  background: linear-gradient(135deg, #e65100, #ff9800);
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(230, 81, 0, 0.3);
}

.about-card-badge .badge-num {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
}

.about-card-badge .badge-text {
  font-size: 0.7rem;
  font-weight: 500;
  opacity: 0.9;
}

.about-card-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-card-title::before {
  content: '';
  width: 4px;
  height: 18px;
  background: linear-gradient(180deg, #e65100, #ff9800);
  border-radius: 2px;
}

.about-card-text {
  font-size: 0.9rem;
  line-height: 1.9;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  flex: 1;
  margin-bottom: 20px;
  text-align: justify;
}

.about-card-text strong {
  color: var(--color-primary);
  font-weight: 600;
  background: linear-gradient(135deg, rgba(13, 71, 161, 0.08), rgba(21, 101, 192, 0.08));
  padding: 2px 6px;
  border-radius: 4px;
}

.about-card-stats {
  display: flex;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid rgba(13, 71, 161, 0.08);
}

.about-stat {
  flex: 1;
  text-align: center;
  padding: 14px 8px;
  background: linear-gradient(135deg, rgba(13, 71, 161, 0.04), rgba(13, 71, 161, 0.08));
  border-radius: 12px;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.about-stat:hover {
  background: linear-gradient(135deg, rgba(13, 71, 161, 0.08), rgba(13, 71, 161, 0.12));
  border-color: rgba(13, 71, 161, 0.15);
  transform: translateY(-2px);
}

.about-stat-icon {
  display: block;
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.about-stat-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.about-stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  margin-top: 2px;
}

.about-card-tags {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid rgba(230, 81, 0, 0.1);
  justify-content: flex-start;
}

.about-tag {
  padding: 6px 12px;
  background: linear-gradient(135deg, rgba(230, 81, 0, 0.08), rgba(255, 152, 0, 0.08));
  color: #e65100;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 20px;
  transition: all 0.3s ease;
  white-space: nowrap;
  border: 1px solid rgba(230, 81, 0, 0.15);
}

.about-tag:hover {
  background: linear-gradient(135deg, #e65100, #ff9800);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(230, 81, 0, 0.25);
}

/* ========== 产品服务 ========== */
.services {
  background: var(--color-bg);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  padding: 36px 32px 32px;
  border-radius: 14px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(13, 71, 161, 0.06);
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  opacity: 0;
  transition: opacity 0.25s;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(13, 71, 161, 0.12);
  border-color: rgba(13, 71, 161, 0.15);
}

.product-card:hover::before {
  opacity: 1;
}

.product-icon {
  font-size: 2.75rem;
  margin-bottom: 18px;
  filter: grayscale(0);
  transition: transform 0.25s;
}

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

/* 产品图片样式 */
.product-img-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  margin-bottom: 20px;
  border-radius: 10px;
  overflow: hidden;
  background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 50%, #90caf9 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.product-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.product-icon-fallback {
  font-size: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 产品视频样式 */
.product-video-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  margin-bottom: 20px;
  border-radius: 10px;
  overflow: hidden;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.product-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.4s ease;
  /* 去除视频黑边 */
  min-width: 100%;
  min-height: 100%;
}

.product-card:hover .product-video {
  transform: scale(1.05);
}

/* 视频标题覆盖层 - 左侧显示 */
.product-video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 80px;
  padding: 12px 10px;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-video-title {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 500;
  color: #fff;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.15em;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
  margin: 0;
}

/* 图片上的标题覆盖层 */
.product-img-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 40px 20px 20px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.product-img-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: #fff;
  text-align: center;
  letter-spacing: 0.05em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  margin: 0;
  transition: transform 0.3s ease;
}

.product-card:hover .product-img-title {
  transform: translateY(-4px);
}

/* 特色产品卡片 */
.product-card-featured {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid rgba(13, 71, 161, 0.1);
}

.product-card-featured::before {
  background: linear-gradient(90deg, #1565c0, #42a5f5, #1565c0);
  opacity: 1;
  height: 5px;
}

.product-card-featured .product-title {
  color: var(--color-primary);
  font-size: 1.35rem;
}

.product-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.product-desc {
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-text-muted);
  letter-spacing: 0.01em;
  flex: 1;
  margin-bottom: 20px;
}

.product-link {
  display: inline-flex;
  align-items: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  transition: color 0.2s, gap 0.2s;
}

.product-card:hover .product-link {
  color: var(--color-primary-light);
}

/* ========== 解决方案 ========== */
.solutions {
  background: linear-gradient(180deg, #f0f4f8 0%, #e8eef5 100%);
  position: relative;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.solution-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  padding: 32px 28px;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(13, 71, 161, 0.08);
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #1565c0, #42a5f5);
  opacity: 0;
  transition: opacity 0.3s;
}

.solution-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(13, 71, 161, 0.15);
  border-color: rgba(13, 71, 161, 0.15);
}

.solution-card:hover::before {
  opacity: 1;
}

.solution-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  display: inline-block;
  transition: transform 0.3s;
}

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

.solution-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  letter-spacing: var(--tracking-tight);
}

.solution-desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.solution-features {
  list-style: none;
  padding: 0;
  margin: 0 0 20px 0;
  flex: 1;
}

.solution-features li {
  position: relative;
  padding-left: 24px;
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 2;
}

.solution-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 600;
}

.solution-link {
  display: inline-flex;
  align-items: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: color 0.2s;
}

.solution-card:hover .solution-link {
  color: var(--color-primary-light);
}

/* 智慧金融卡片特殊样式 */
.solution-card-finance {
  text-decoration: none;
  color: inherit;
  background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 50%, #e1f5fe 100%);
  border: 1px solid rgba(21, 101, 192, 0.15);
  position: relative;
  overflow: hidden;
}

.solution-card-finance::before {
  background: linear-gradient(90deg, #1565c0, #0288d1, #1565c0);
  opacity: 1;
  height: 4px;
}

.solution-card-finance::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(21, 101, 192, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.finance-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.finance-icon {
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #1565c0, #1976d2);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(21, 101, 192, 0.25);
}

.finance-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin: 0;
}

.finance-subtitle {
  font-size: 0.8rem;
  color: #5c6bc0;
  margin-bottom: 16px;
  padding-left: 60px;
}

/* 智慧金融统计数据样式 */
.finance-stats {
  display: flex;
  gap: 16px;
  margin-left: auto;
}

.finance-stats .stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 12px;
  background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.7));
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(21, 101, 192, 0.15);
  min-width: 60px;
}

.finance-stats .stat-icon {
  font-size: 1rem;
  margin-bottom: 2px;
}

.finance-stats .stat-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1565c0;
  line-height: 1.2;
}

.finance-stats .stat-label {
  font-size: 0.7rem;
  color: #64b5f6;
  font-weight: 500;
}

/* 低空经济卡片特殊样式 */
.solution-card-lowalt {
  text-decoration: none;
  color: inherit;
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 50%, #dcedc8 100%);
  border: 1px solid rgba(46, 125, 50, 0.15);
  position: relative;
  overflow: hidden;
}

.solution-card-lowalt::before {
  background: linear-gradient(90deg, #2e7d32, #43a047, #2e7d32);
  opacity: 1;
  height: 4px;
}

.solution-card-lowalt::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(46, 125, 50, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.lowalt-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.lowalt-icon {
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #2e7d32, #43a047);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(46, 125, 50, 0.25);
}

.lowalt-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: #1b5e20;
  margin: 0;
  flex: 1;
}

/* 统计数据样式 */
.lowalt-stats {
  display: flex;
  gap: 16px;
  margin-left: auto;
}

.lowalt-stats .stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 12px;
  background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.7));
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(46, 125, 50, 0.15);
  min-width: 60px;
}

.lowalt-stats .stat-icon {
  font-size: 1rem;
  margin-bottom: 2px;
}

.lowalt-stats .stat-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: #2e7d32;
  line-height: 1.2;
}

.lowalt-stats .stat-label {
  font-size: 0.7rem;
  color: #66bb6a;
  font-weight: 500;
}

.lowalt-subtitle {
  font-size: 0.8rem;
  color: #66bb6a;
  margin-bottom: 16px;
  padding-left: 60px;
}

/* 小文件夹列表（竖向排列） */
.solution-mini-folders {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.mini-folder {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 10px;
  border: 1px solid rgba(21, 101, 192, 0.1);
  text-decoration: none;
  color: inherit;
  transition: all 0.25s ease;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.mini-folder:hover {
  transform: translateX(6px);
  background: #fff;
  border-color: #ffc107;
  box-shadow: 0 4px 16px rgba(255, 193, 7, 0.2);
}

.mini-folder-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 3px rgba(0,0,0,0.1));
}

.mini-folder-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: #37474f;
  line-height: 1.4;
}

.mini-folder-count {
  font-size: 0.7rem;
  color: #90a4ae;
  margin-left: auto;
  white-space: nowrap;
}

/* 文件夹加载状态 */
.folders-loading,
.folders-empty,
.folders-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  text-align: center;
  gap: 8px;
}

.loading-icon,
.empty-icon,
.error-icon {
  font-size: 1.5rem;
}

.loading-text,
.empty-text,
.error-text {
  font-size: 0.85rem;
  color: #78909c;
}

.folders-loading .loading-icon {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.folders-error .error-icon {
  color: #ef5350;
}

.folders-error .error-text {
  color: #e53935;
}

/* 统计数据卡片样式 */
.solution-card-stats {
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 50%, #e0f2f1 100%);
  border: 1px solid rgba(46, 125, 50, 0.15);
  position: relative;
  overflow: hidden;
}

.solution-card-stats::before {
  background: linear-gradient(90deg, #2e7d32, #43a047, #2e7d32);
  opacity: 1;
  height: 4px;
}

.solution-card-stats::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(46, 125, 50, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.stats-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.stats-icon {
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #2e7d32, #43a047);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(46, 125, 50, 0.25);
}

.stats-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: #1b5e20;
  margin: 0;
}

.stats-overview {
  display: flex;
  justify-content: space-around;
  padding: 16px 0;
  margin-bottom: 16px;
}

.stats-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stats-number {
  font-size: 1.8rem;
  font-weight: 700;
  color: #2e7d32;
  line-height: 1;
}

.stats-label {
  font-size: 0.75rem;
  color: #558b2f;
  font-weight: 500;
}

.stats-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(46, 125, 50, 0.3), transparent);
  margin: 8px 0 16px;
}

.stats-subtitle {
  font-size: 0.9rem;
  font-weight: 600;
  color: #33691e;
  margin: 0 0 12px 0;
}

.stats-top-docs {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 200px;
  overflow-y: auto;
}

.stats-doc-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 8px;
  border: 1px solid rgba(46, 125, 50, 0.1);
  transition: all 0.2s;
}

.stats-doc-item:hover {
  background: #fff;
  border-color: rgba(46, 125, 50, 0.2);
  transform: translateX(4px);
}

.stats-doc-rank {
  width: 22px;
  height: 22px;
  background: linear-gradient(135deg, #66bb6a, #43a047);
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stats-doc-rank.gold {
  background: linear-gradient(135deg, #ffd54f, #ffb300);
}

.stats-doc-rank.silver {
  background: linear-gradient(135deg, #b0bec5, #78909c);
}

.stats-doc-rank.bronze {
  background: linear-gradient(135deg, #ffab91, #ff7043);
}

.stats-doc-name {
  flex: 1;
  font-size: 0.8rem;
  color: #37474f;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.stats-doc-counts {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

.stats-doc-count {
  font-size: 0.7rem;
  color: #78909c;
  display: flex;
  align-items: center;
  gap: 3px;
}

.stats-doc-count span {
  font-weight: 600;
  color: #2e7d32;
}

.stats-loading {
  text-align: center;
  padding: 20px;
  color: #78909c;
  font-size: 0.85rem;
}

/* 解决方案资料目录 */
.solution-docs-section {
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid rgba(13, 71, 161, 0.1);
}

.solution-docs-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  text-align: center;
  margin-bottom: 12px;
}

.solution-docs-desc {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-bottom: 30px;
}

.solution-docs-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.solution-doc-folder {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px 20px;
  background: linear-gradient(135deg, #fffde7 0%, #fff8e1 100%);
  border-radius: 12px;
  border: 1px solid #ffe082;
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  text-align: center;
}

.solution-doc-folder:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(255, 193, 7, 0.25);
  border-color: #ffc107;
}

.doc-folder-badge {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #1565c0, #1976d2);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 12px;
  letter-spacing: 0.05em;
}

.doc-folder-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.doc-folder-content h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: #5d4037;
  margin: 0 0 8px 0;
  line-height: 1.4;
}

.doc-folder-content span {
  font-size: 0.75rem;
  color: #8d6e63;
  line-height: 1.5;
}

/* ========== 新闻动态 ========== */
.news {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--color-white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(13, 71, 161, 0.06);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(13, 71, 161, 0.12);
  border-color: rgba(13, 71, 161, 0.12);
}

.news-card-date {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  padding: 16px 20px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.news-day {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.news-month {
  font-size: 0.85rem;
  opacity: 0.85;
}

.news-card-content {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-tag {
  display: inline-block;
  padding: 4px 10px;
  background: rgba(13, 71, 161, 0.08);
  color: var(--color-primary);
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 12px;
  margin-bottom: 12px;
  width: fit-content;
}

.news-card-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 10px;
  transition: color 0.2s;
}

.news-card:hover .news-card-title {
  color: var(--color-primary);
}

.news-card-desc {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  flex: 1;
  margin-bottom: 16px;
}

.news-card-link {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.news-card:hover .news-card-link {
  gap: 8px;
}

/* ========== 留言板 ========== */
.message-board {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  overflow: hidden;
}

.message-bg-decoration {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1) 0%, transparent 50%);
  pointer-events: none;
}

.message-board .section-title,
.message-board .section-desc {
  color: #fff;
  position: relative;
  z-index: 1;
}

.message-board .section-desc {
  opacity: 0.9;
}

.message-card {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  background: var(--color-white);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  position: relative;
  z-index: 1;
}

.message-card-left {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1a237e 100%);
  padding: 40px 32px;
  display: flex;
  align-items: center;
}

.message-info {
  color: #fff;
}

.message-info-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.message-info-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.message-info-text {
  font-size: 0.9rem;
  line-height: 1.7;
  opacity: 0.9;
  margin-bottom: 28px;
}

.message-contact-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.message-contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  opacity: 0.9;
}

.contact-icon {
  font-size: 1.1rem;
}

.message-card-right {
  padding: 40px;
}

.message-form {
  display: flex;
  flex-direction: column;
}

.form-row-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row {
  margin-bottom: 20px;
}

.form-row label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.form-row .required {
  color: #e53935;
  margin-left: 2px;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid #e8eef5;
  border-radius: 12px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: all 0.3s ease;
  background: #f8fafc;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(13, 71, 161, 0.08);
}

.form-row input.input-error,
.form-row textarea.input-error {
  border-color: #e53935;
  background: #fff5f5;
}

.form-row input.input-error:focus,
.form-row textarea.input-error:focus {
  border-color: #e53935;
  box-shadow: 0 0 0 4px rgba(229, 57, 53, 0.1);
}

.error-msg {
  display: none;
  color: #e53935;
  font-size: 0.8rem;
  margin-top: 6px;
  padding-left: 2px;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: #a0aec0;
}

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

.btn-submit {
  width: 100%;
  padding: 16px 28px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.3s ease;
  box-shadow: 0 8px 24px rgba(102, 126, 234, 0.35);
  margin-top: 8px;
}

.btn-submit:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(102, 126, 234, 0.45);
}

.btn-submit:active {
  transform: translateY(-1px);
}

.btn-submit .btn-icon {
  font-size: 1.1rem;
  transition: transform 0.3s ease;
}

.btn-submit:hover .btn-icon {
  transform: translateX(4px) rotate(-20deg);
}

/* ========== 按钮 ========== */
.btn {
  display: inline-block;
  padding: 10px 24px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius);
  cursor: pointer;
  border: none;
  transition: background 0.2s, color 0.2s;
}

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

.btn-primary:hover {
  background: var(--color-primary-light);
}

/* ========== 联系我们 ========== */
.contact {
  background: var(--color-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
}

.contact-item {
  padding: 20px;
  background: var(--color-bg);
  border-radius: var(--radius);
}

.contact-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

/* ========== 页脚 ========== */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 24px 0;
  text-align: center;
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .nav-list {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list.open {
    display: flex;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-white);
    padding: 20px;
    box-shadow: var(--shadow);
  }

  .carousel-section {
    height: 56vh;
    min-height: 280px;
    max-height: 420px;
  }

  .carousel {
    border-radius: 0 0 16px 16px;
  }

  .carousel-caption {
    padding: 40px 20px 36px;
  }

  .carousel-caption h2 {
    font-size: 1.35rem;
    margin-bottom: 8px;
  }

  .carousel-caption p {
    font-size: var(--text-base);
  }

  .carousel-btn {
    width: 40px;
    height: 40px;
    font-size: 20px;
    border-radius: 10px;
  }

  .carousel-prev { left: 12px; }
  .carousel-next { right: 12px; }

  .carousel-dots {
    bottom: 16px;
    gap: 8px;
    padding: 8px 14px;
  }

  .dot {
    width: 8px;
    height: 8px;
  }

  .dot.active {
    width: 22px;
  }

  .section {
    padding: 32px 0;
  }

  .section + .section {
    padding-top: 16px;
  }

  .about-bg-decoration {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .about-card {
    padding: 24px 20px 20px;
  }

  .about-card-header {
    flex-direction: column;
    gap: 12px;
    margin-bottom: 16px;
  }

  .about-card-badges {
    flex-direction: row;
    align-items: flex-start;
  }

  .about-mini-badge {
    font-size: 0.65rem;
    padding: 3px 8px;
  }

  .about-logo-img {
    width: 140px;
    height: 56px;
  }

  .about-card-badge {
    padding: 8px 12px;
  }

  .about-card-badge .badge-num {
    font-size: 1.25rem;
  }

  .about-card-title {
    font-size: 1rem;
    margin-bottom: 10px;
  }

  .about-card-text {
    font-size: 0.85rem;
    margin-bottom: 16px;
  }

  .about-card-stats {
    gap: 8px;
    padding-top: 16px;
  }

  .about-stat {
    padding: 10px 6px;
  }

  .about-stat-icon {
    font-size: 1rem;
    margin-bottom: 4px;
  }

  .about-stat-num {
    font-size: 1.25rem;
  }

  .about-stat-label {
    font-size: 0.7rem;
  }

  .about-card-tags {
    flex-wrap: wrap;
    gap: 6px;
    padding-top: 14px;
  }

  .about-tag {
    padding: 4px 10px;
    font-size: 0.7rem;
  }

  .product-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .product-card {
    padding: 28px 24px 24px;
  }

  .product-icon {
    font-size: 2.25rem;
    margin-bottom: 14px;
  }

  .product-title {
    font-size: 1.125rem;
    margin-bottom: 10px;
  }

  .product-desc {
    font-size: 0.9rem;
    margin-bottom: 16px;
  }

  .product-img-overlay {
    padding: 30px 16px 16px;
  }

  .product-img-title {
    font-size: 1.25rem;
  }

  .solutions-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .solution-card {
    padding: 24px 20px;
  }

  .solution-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
  }

  .solution-title {
    font-size: 1.15rem;
  }

  .solution-desc {
    font-size: 0.85rem;
  }

  .solution-features li {
    font-size: 0.85rem;
  }

  .finance-header {
    gap: 10px;
  }

  .finance-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    border-radius: 10px;
  }

  .finance-title {
    font-size: 1.1rem;
  }

  .finance-subtitle {
    padding-left: 50px;
    font-size: 0.75rem;
  }

  .solution-mini-folders {
    gap: 6px;
  }

  .mini-folder {
    padding: 10px 12px;
    gap: 10px;
  }

  .mini-folder-icon {
    font-size: 1.1rem;
  }

  .mini-folder-name {
    font-size: 0.8rem;
  }

  .solution-docs-section {
    margin-top: 36px;
    padding-top: 30px;
  }

  .solution-docs-title {
    font-size: 1.25rem;
  }

  .solution-docs-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .solution-doc-folder {
    flex-direction: row;
    padding: 16px 18px;
    text-align: left;
  }

  .doc-folder-badge {
    position: static;
    transform: none;
    margin-right: 12px;
    padding: 6px 10px;
    flex-shrink: 0;
  }

  .doc-folder-icon {
    font-size: 2rem;
    margin-bottom: 0;
    margin-right: 12px;
    flex-shrink: 0;
  }

  .doc-folder-content {
    flex: 1;
    min-width: 0;
  }

  .doc-folder-content h4 {
    font-size: 0.9rem;
  }

  .doc-folder-content span {
    font-size: 0.7rem;
  }

  .news-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .news-card-date {
    padding: 12px 16px;
  }

  .news-day {
    font-size: 1.5rem;
  }

  .news-month {
    font-size: 0.75rem;
  }

  .news-card-content {
    padding: 16px;
  }

  .news-card-title {
    font-size: 0.95rem;
  }

  .news-card-desc {
    font-size: 0.8rem;
    margin-bottom: 12px;
  }

  .message-card {
    grid-template-columns: 1fr;
  }

  .message-card-left {
    padding: 28px 24px;
  }

  .message-info-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
  }

  .message-info-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
  }

  .message-info-text {
    font-size: 0.85rem;
    margin-bottom: 20px;
  }

  .message-contact-list {
    gap: 10px;
  }

  .message-card-right {
    padding: 24px;
  }

  .form-row-group {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form-row {
    margin-bottom: 16px;
  }

  .form-row input,
  .form-row textarea {
    padding: 12px 14px;
    font-size: 0.85rem;
  }

  .btn-submit {
    padding: 14px 20px;
    font-size: 0.9rem;
  }

}