:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #0f1523;
  --bg-card: rgba(18, 25, 41, 0.75);
  --bg-card-hover: rgba(26, 36, 60, 0.9);
  --border-color: rgba(64, 128, 255, 0.15);
  --border-glow: rgba(0, 229, 255, 0.45);
  --text-main: #f0f4fc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent-blue: #0088ff;
  --accent-cyan: #00e5ff;
  --accent-purple: #7928ca;
  --accent-gradient: linear-gradient(135deg, #00e5ff 0%, #0088ff 50%, #7928ca 100%);
  --accent-gold: #f59e0b;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* 科技背景微光 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 10% 15%, rgba(0, 229, 255, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 90% 70%, rgba(121, 40, 202, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(0, 136, 255, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: -1;
}

/* 顶部导航栏 */
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(10, 13, 20, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.5px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--accent-gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.35);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent-cyan);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-console {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: var(--accent-gradient);
  color: #fff;
  font-weight: 600;
  font-size: 13px;
  border-radius: 8px;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(0, 136, 255, 0.3);
  transition: all 0.25s ease;
  border: 1px solid rgba(255, 255, 255, 0.18);
  white-space: nowrap;
}

.btn-console:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 229, 255, 0.45);
}

/* 英雄区 (Hero) */
.hero {
  max-width: 1240px;
  margin: 0 auto;
  padding: 70px 20px 50px;
  text-align: center;
  position: relative;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 22px;
  letter-spacing: -0.5px;
}

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

.hero p {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 820px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 50px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--accent-cyan);
}

/* 核心看板卡片 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 1040px;
  margin: 0 auto;
}

.stat-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 20px 16px;
  border-radius: 12px;
  backdrop-filter: blur(10px);
}

.stat-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent-cyan);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
}

/* 通用模块样式 */
.section {
  max-width: 1240px;
  margin: 0 auto;
  padding: 80px 20px;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-tag {
  color: var(--accent-cyan);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.7;
}

/* 价值沉淀核心卡片 (新板块) */
.value-matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 30px;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  position: relative;
  transition: all 0.25s ease;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
}

.value-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 229, 255, 0.12);
}

.value-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.value-card-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.value-card-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-main);
}

.value-card-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 20px;
  flex-grow: 1;
}

.value-comparison {
  background: rgba(255, 255, 255, 0.02);
  border-left: 3px solid var(--accent-cyan);
  padding: 12px 14px;
  border-radius: 0 8px 8px 0;
  font-size: 13px;
  line-height: 1.6;
}

.value-comparison-past {
  color: var(--text-dim);
  margin-bottom: 6px;
}

.value-comparison-now {
  color: var(--accent-cyan);
  font-weight: 500;
}

/* 宣传语金句框 */
.quote-banner {
  background: linear-gradient(135deg, rgba(0, 136, 255, 0.08) 0%, rgba(121, 40, 202, 0.08) 100%);
  border: 1px dashed rgba(0, 229, 255, 0.3);
  border-radius: 14px;
  padding: 24px;
  text-align: center;
  margin: 36px auto 0;
  max-width: 960px;
}

.quote-banner p {
  font-size: 16px;
  color: var(--text-main);
  font-weight: 600;
  line-height: 1.7;
}

.quote-banner span {
  color: var(--accent-cyan);
}

/* 产品网格卡片 */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: all 0.25s ease;
  backdrop-filter: blur(12px);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 229, 255, 0.1);
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(0, 229, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 22px;
  margin-bottom: 20px;
  border: 1px solid rgba(0, 229, 255, 0.2);
}

.feature-title {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-pill {
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  font-size: 12px;
  color: var(--accent-cyan);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* 对比表格板块 */
.comparison-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  overflow-x: auto;
  margin-top: 30px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
  min-width: 600px;
}

.comparison-table th {
  background: rgba(255, 255, 255, 0.03);
  padding: 16px 20px;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
}

.comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  line-height: 1.6;
}

.comparison-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.col-pro {
  color: var(--accent-cyan) !important;
  font-weight: 500;
}

/* 解决方案网格 */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 26px 20px;
  transition: all 0.25s ease;
}

.solution-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-3px);
}

.solution-badge {
  font-size: 11px;
  color: var(--accent-purple);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.solution-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.solution-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Banner CTA */
.cta-banner {
  background: linear-gradient(135deg, rgba(0, 136, 255, 0.12) 0%, rgba(121, 40, 202, 0.12) 100%);
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-radius: 16px;
  padding: 48px 24px;
  text-align: center;
  margin-top: 30px;
}

.cta-banner h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

.cta-banner p {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 600px;
  margin: 0 auto 26px;
  line-height: 1.7;
}

/* 页脚 */
.footer {
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  padding: 50px 20px 24px;
  font-size: 13.5px;
  color: var(--text-muted);
}

.footer-container {
  max-width: 1240px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 36px;
}

.footer-col h5 {
  color: var(--text-main);
  font-size: 14px;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  max-width: 1240px;
  margin: 0 auto;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-dim);
}

.footer-bottom a {
  color: var(--text-dim);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--text-muted);
}

/* 手机与平板端响应式优化 */
@media (max-width: 992px) {
  .hero h1 { font-size: 36px; }
  .grid-4, .solution-grid, .value-matrix-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-container { grid-template-columns: 1fr 1fr; }
}

/* 企业微信客服弹窗 */
.wecom-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 16px;
}

.wecom-modal-backdrop.active {
  display: flex;
}

.wecom-modal-card {
  background: #0f172a;
  border: 1px solid rgba(0, 229, 255, 0.35);
  border-radius: 20px;
  padding: 28px 24px;
  max-width: 340px;
  width: 100%;
  text-align: center;
  position: relative;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 229, 255, 0.18);
  animation: modalFadeIn 0.25s ease-out;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

.wecom-modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
  transition: color 0.2s;
}

.wecom-modal-close:hover {
  color: #fff;
}

.wecom-qr-img {
  width: 220px;
  height: auto;
  border-radius: 12px;
  margin: 14px auto;
  display: block;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

@media (max-width: 680px) {
  .nav-links { display: none; }
  .nav-container { height: 60px; padding: 0 16px; }
  .logo { font-size: 17px; }
  .btn-console { padding: 6px 14px; font-size: 12px; }
  
  .hero { padding: 40px 16px 36px; }
  .badge { font-size: 12px; padding: 4px 12px; margin-bottom: 16px; }
  .hero h1 { font-size: 25px; line-height: 1.35; margin-bottom: 16px; }
  .hero p { font-size: 15px; margin-bottom: 26px; }
  .hero-cta { flex-direction: column; width: 100%; gap: 12px; }
  .hero-cta a { width: 100%; justify-content: center; }
  
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-item { padding: 14px 10px; }
  .stat-number { font-size: 22px; }
  .stat-label { font-size: 11.5px; }

  .section { padding: 50px 16px; }
  .section-title { font-size: 24px; }
  .section-subtitle { font-size: 14px; }
  
  .feature-card, .value-card { padding: 20px; }
  .feature-title, .value-card-title { font-size: 17px; }
  
  .footer-container { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
}