/* ========================================
   望浔传媒科技 - 企业官网样式
   主题：科技蓝 + 深色专业风
   ======================================== */

:root {
  --primary: #0A66C2;
  --primary-dark: #084E96;
  --primary-light: #E8F3FF;
  --accent: #00B4D8;
  --accent2: #0077B6;
  --dark: #0B1E33;
  --dark2: #132A45;
  --text: #1A1A2E;
  --text-secondary: #4A5568;
  --text-light: #718096;
  --bg: #FFFFFF;
  --bg-alt: #F7F9FC;
  --bg-dark: #0B1E33;
  --border: #E2E8F0;
  --success: #10B981;
  --gradient: linear-gradient(135deg, #0A66C2 0%, #00B4D8 100%);
  --gradient-dark: linear-gradient(135deg, #0B1E33 0%, #132A45 100%);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 15px rgba(10, 102, 194, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(10, 102, 194, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

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

.btn-white:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

/* ============ 导航栏 ============ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  transition: var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============ Hero 区域 ============ */
.hero {
  padding: 140px 0 100px;
  background: var(--gradient-dark);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0,180,216,0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(10,102,194,0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: 48px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-content h1 span {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content .hero-desc {
  font-size: 18px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 36px;
  line-height: 1.8;
  max-width: 520px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 50px;
}

.hero-stats .stat-item h3 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
}

.hero-stats .stat-item p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 480px;
}

.code-window {
  background: #1E293B;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.code-header {
  background: #0F172A;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.code-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.code-dot.red { background: #FF5F57; }
.code-dot.yellow { background: #FEBE2E; }
.code-dot.green { background: #28C840; }

.code-body {
  padding: 20px;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.8;
  color: #E2E8F0;
}

.code-body .keyword { color: #C678DD; }
.code-body .string { color: #98C379; }
.code-body .function { color: #61AFEF; }
.code-body .comment { color: #5C6370; }
.code-body .tag { color: #E06C75; }

/* ============ 通用区块标题 ============ */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header .section-label {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

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

/* ============ 服务卡片 ============ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

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

.service-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.service-card .service-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.service-card .service-link:hover {
  gap: 12px;
}

/* ============ 案例展示 ============ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.case-image {
  height: 240px;
  background: var(--gradient-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.case-image .case-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.case-image .case-icon {
  font-size: 64px;
  opacity: 0.3;
}

.case-info {
  padding: 24px;
}

.case-info .case-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.case-tag {
  padding: 3px 10px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

.case-info h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.case-info p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ============ 技术栈 ============ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.tech-item {
  background: #fff;
  border-radius: var(--radius);
  padding: 30px 20px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.tech-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}

.tech-item .tech-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.tech-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
}

/* ============ 流程 ============ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

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

.process-step .step-number {
  width: 56px;
  height: 56px;
  background: var(--gradient);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  margin: 0 auto 20px;
  position: relative;
  z-index: 2;
}

.process-step h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ============ CTA ============ */
.cta-section {
  background: var(--gradient);
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 18px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 36px;
}

/* ============ 页脚 ============ */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-about h3 {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-about p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 16px;
}

.footer h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 14px;
}

.footer-contact .contact-icon {
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.footer-bottom a {
  color: var(--accent);
}

/* ============ 内页通用 ============ */
.page-hero {
  padding: 140px 0 80px;
  background: var(--gradient-dark);
  text-align: center;
}

.page-hero h1 {
  font-size: 42px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 18px;
  color: rgba(255,255,255,0.7);
}

.page-content {
  padding: 80px 0;
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content h1 { font-size: 34px; }
  .hero-desc { margin: 0 auto 36px; }
  .hero-buttons { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }

  .menu-toggle { display: flex; }
  .nav-links { display: none; }
  .nav-cta .btn { display: none; }

  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  .services-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }

  .section { padding: 60px 0; }
  .section-header h2 { font-size: 28px; }
}

@media (max-width: 480px) {
  .hero-content h1 { font-size: 28px; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .tech-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; }
}