/* ========================================
   直播技术解决方案 - 全站样式
   独特配色方案：深蓝渐变 + 亮橙强调色
   ======================================== */

/* CSS变量定义 */
:root {
  --primary-dark: #0a1628;
  --primary-mid: #132743;
  --primary-light: #1e3a5f;
  --accent-orange: #ff6b2b;
  --accent-orange-light: #ff8f5e;
  --accent-cyan: #00d4ff;
  --accent-cyan-light: #5ee7ff;
  --text-white: #f0f4f8;
  --text-gray: #a8b8cc;
  --text-dark: #1a1a2e;
  --bg-card: rgba(19, 39, 67, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --shadow-deep: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.15);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-heading: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --transition-fast: 0.2s ease;
  --transition-mid: 0.4s ease;
  --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 重置与基础 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  background: var(--primary-dark);
  color: var(--text-white);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 干扰标签区块隐藏 */
.jammer-block {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
  pointer-events: none;
  user-select: none;
  z-index: -9999;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 链接 */
a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-cyan-light);
}

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

/* ========== 导航栏 ========== */
.site-nav {
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0;
  z-index: 1000;
  position: relative;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 20px;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-cyan));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

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

.nav-links a {
  color: var(--text-gray);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 0;
  position: relative;
  transition: color var(--transition-fast);
}

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

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

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

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
}

.nav-toggle span {
  width: 26px;
  height: 2px;
  background: var(--text-white);
  transition: var(--transition-fast);
  border-radius: 2px;
}

/* ========== 面包屑导航 ========== */
.breadcrumb {
  padding: 14px 0;
  font-size: 0.85rem;
  color: var(--text-gray);
  border-bottom: 1px solid var(--border-subtle);
}

.breadcrumb a {
  color: var(--text-gray);
}

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

.breadcrumb .sep {
  margin: 0 8px;
  color: rgba(168, 184, 204, 0.4);
}

/* ========== 首页Banner ========== */
.hero-banner {
  background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary-mid) 40%, #1a3352 70%, var(--primary-dark) 100%);
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: float-glow 8s ease-in-out infinite;
}

.hero-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 107, 43, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  animation: float-glow 10s ease-in-out infinite reverse;
}

@keyframes float-glow {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 107, 43, 0.15);
  border: 1px solid rgba(255, 107, 43, 0.3);
  color: var(--accent-orange-light);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text-white) 0%, var(--accent-cyan-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-gray);
  max-width: 680px;
  margin: 0 auto 36px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 按钮样式 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent-orange), #e85d1a);
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-mid);
  box-shadow: 0 4px 15px rgba(255, 107, 43, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 107, 43, 0.45);
  color: #fff;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-glass);
  color: var(--text-white);
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--transition-mid);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  color: var(--text-white);
  transform: translateY(-2px);
}

/* ========== 统计数据条 ========== */
.stats-bar {
  background: var(--primary-mid);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 40px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat-item .stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-cyan);
  font-family: var(--font-heading);
}

.stat-item .stat-label {
  font-size: 0.9rem;
  color: var(--text-gray);
  margin-top: 4px;
}

/* ========== 区块标题 ========== */
.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-white);
}

.section-title h2 span {
  color: var(--accent-orange);
}

.section-title p {
  font-size: 1rem;
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto;
}

/* ========== 解决方案卡片 ========== */
.solutions-section {
  padding: 80px 0;
  background: var(--primary-dark);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: all var(--transition-mid);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan));
  opacity: 0;
  transition: opacity var(--transition-mid);
}

.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-deep);
  border-color: rgba(0, 212, 255, 0.2);
}

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

.solution-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(255, 107, 43, 0.15), rgba(0, 212, 255, 0.15));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.solution-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-white);
}

.solution-card p {
  font-size: 0.92rem;
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 20px;
}

.solution-card .card-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-orange);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

/* ========== 事件日历 ========== */
.events-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--primary-mid) 0%, var(--primary-dark) 100%);
}

.calendar-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.calendar-header {
  background: linear-gradient(135deg, var(--primary-light), var(--primary-mid));
  padding: 20px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.calendar-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

.calendar-nav {
  display: flex;
  gap: 10px;
}

.calendar-nav button {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-white);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition-fast);
}

.calendar-nav button:hover {
  background: var(--accent-orange);
  border-color: var(--accent-orange);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  background: var(--border-subtle);
}

.calendar-day-header {
  background: var(--primary-mid);
  padding: 10px;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-gray);
}

.calendar-day {
  background: var(--primary-dark);
  padding: 10px;
  min-height: 80px;
  font-size: 0.85rem;
  color: var(--text-gray);
  position: relative;
}

.calendar-day.has-event {
  cursor: pointer;
}

.calendar-day .day-num {
  font-weight: 600;
  margin-bottom: 4px;
}

.calendar-day.today .day-num {
  color: var(--accent-cyan);
}

.calendar-day .event-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent-orange);
  border-radius: 50%;
  margin-right: 4px;
}

.calendar-day .event-label {
  font-size: 0.72rem;
  color: var(--accent-orange-light);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 事件列表 */
.event-list {
  padding: 28px;
}

.event-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-subtle);
  align-items: flex-start;
}

.event-item:last-child {
  border-bottom: none;
}

.event-date-box {
  min-width: 60px;
  text-align: center;
  background: linear-gradient(135deg, var(--accent-orange), #e85d1a);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  flex-shrink: 0;
}

.event-date-box .month {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
}

.event-date-box .day {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.event-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-white);
}

.event-info p {
  font-size: 0.85rem;
  color: var(--text-gray);
  line-height: 1.6;
}

.event-info .event-meta {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--accent-cyan);
}

/* ========== 客户案例 ========== */
.cases-section {
  padding: 80px 0;
  background: var(--primary-dark);
}

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

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-mid);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-deep);
}

.case-thumb {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-mid));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.case-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-body {
  padding: 24px;
}

.case-body h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.case-body p {
  font-size: 0.9rem;
  color: var(--text-gray);
  line-height: 1.7;
  margin-bottom: 12px;
}

.case-body .case-quote {
  font-style: italic;
  border-left: 3px solid var(--accent-orange);
  padding-left: 16px;
  color: var(--text-gray);
  font-size: 0.88rem;
}

/* ========== 合作伙伴 ========== */
.partners-section {
  padding: 60px 0;
  background: var(--primary-mid);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.partners-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.partner-logo {
  width: 120px;
  height: 60px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--text-gray);
  transition: var(--transition-mid);
}

.partner-logo:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
}

/* ========== 新闻动态 ========== */
.news-section {
  padding: 80px 0;
  background: var(--primary-dark);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-mid);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-deep);
}

.news-thumb {
  width: 100%;
  height: 160px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-mid));
  overflow: hidden;
}

.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-body {
  padding: 20px;
}

.news-body .news-tag {
  display: inline-block;
  background: rgba(255, 107, 43, 0.12);
  color: var(--accent-orange);
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.news-body h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.5;
}

.news-body p {
  font-size: 0.85rem;
  color: var(--text-gray);
  line-height: 1.7;
}

.news-body .news-date {
  font-size: 0.78rem;
  color: rgba(168, 184, 204, 0.6);
  margin-top: 12px;
}

/* ========== FAQ区块 ========== */
.faq-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary-mid) 100%);
}

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

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition-mid);
}

.faq-item:hover {
  border-color: rgba(0, 212, 255, 0.2);
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.95rem;
  user-select: none;
}

.faq-question .faq-toggle {
  font-size: 1.2rem;
  color: var(--accent-orange);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-answer {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: var(--text-gray);
  line-height: 1.8;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

/* ========== 页脚 ========== */
.site-footer {
  background: #060e1a;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .footer-logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 16px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-gray);
  transition: var(--transition-fast);
}

.footer-social a:hover {
  background: var(--accent-orange);
  border-color: var(--accent-orange);
  color: #fff;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-white);
}

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

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.88rem;
  color: var(--text-gray);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 20px 0;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(168, 184, 204, 0.5);
}

.footer-bottom a {
  color: rgba(168, 184, 204, 0.5);
}

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

/* ========== 内页通用 ========== */
.page-header {
  background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary-mid) 50%, var(--primary-light) 100%);
  padding: 60px 0 50px;
  text-align: center;
  position: relative;
}

.page-header h1 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.page-header p {
  font-size: 1rem;
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto;
}

.page-content {
  padding: 60px 0;
  background: var(--primary-dark);
}

.page-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-white);
}

.page-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-white);
}

.page-content p {
  font-size: 0.95rem;
  color: var(--text-gray);
  line-height: 1.9;
  margin-bottom: 16px;
}

.page-content ul, .page-content ol {
  margin-left: 20px;
  margin-bottom: 16px;
}

.page-content li {
  font-size: 0.93rem;
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 6px;
}

/* 内容卡片 */
.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  margin-bottom: 28px;
}

/* 技术指标表格 */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.spec-table th, .spec-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.9rem;
}

.spec-table th {
  background: var(--primary-mid);
  color: var(--text-white);
  font-weight: 600;
}

.spec-table td {
  color: var(--text-gray);
}

/* 评论区 */
.comments-section {
  margin-top: 40px;
}

.comment-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.comment-avatar {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-cyan));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.comment-body h5 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.comment-body .comment-date {
  font-size: 0.78rem;
  color: rgba(168, 184, 204, 0.5);
  margin-bottom: 8px;
}

.comment-body p {
  font-size: 0.88rem;
  color: var(--text-gray);
  line-height: 1.7;
}

/* 表单 */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-white);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--primary-mid);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-white);
  font-size: 0.9rem;
  font-family: var(--font-main);
  transition: border-color var(--transition-fast);
}

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

/* 博客列表 */
.blog-list {
  display: grid;
  gap: 24px;
}

.blog-item {
  display: flex;
  gap: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-mid);
}

.blog-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-deep);
}

.blog-item-thumb {
  width: 260px;
  min-height: 180px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-mid));
  flex-shrink: 0;
  overflow: hidden;
}

.blog-item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-item-body {
  padding: 24px 24px 24px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.blog-item-body .blog-tag {
  display: inline-block;
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent-cyan);
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
  width: fit-content;
}

.blog-item-body h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.blog-item-body p {
  font-size: 0.88rem;
  color: var(--text-gray);
  line-height: 1.7;
}

.blog-item-body .blog-meta {
  font-size: 0.78rem;
  color: rgba(168, 184, 204, 0.5);
  margin-top: 10px;
}

/* ========== 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);
}

.slide-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-right.visible {
  opacity: 1;
  transform: translateX(0);
}

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

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 22, 40, 0.98);
    flex-direction: column;
    padding: 20px;
    gap: 0;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-toggle {
    display: flex;
  }

  .hero-banner {
    padding: 60px 0 50px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

  .cases-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .blog-item {
    flex-direction: column;
  }

  .blog-item-thumb {
    width: 100%;
    min-height: 160px;
  }

  .blog-item-body {
    padding: 20px;
  }

  .calendar-grid {
    font-size: 0.75rem;
  }

  .calendar-day {
    min-height: 50px;
    padding: 6px;
  }

  .page-header h1 {
    font-size: 1.7rem;
  }

  .section-title h2 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.6rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .stat-item .stat-number {
    font-size: 1.8rem;
  }

  .event-item {
    flex-direction: column;
    gap: 12px;
  }

  .event-date-box {
    align-self: flex-start;
  }
}