/* VMSSR-全球加速 航天遥测控制中心 原生极简高能 CSS */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700&family=Sora:wght@500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --bg-deep: #0B1220;
  --panel-bg: #111B2E;
  --panel-sub: #16243D;
  --accent-cyan: #7DE3FF;
  --accent-cyan-glow: rgba(125, 227, 255, 0.25);
  --text-silver: #D8E2EF;
  --text-dim: #8FA4C0;
  --text-white: #FFFFFF;
  --hairline: rgba(125, 227, 255, 0.18);
  --hairline-bright: rgba(125, 227, 255, 0.45);
  --grid-line: rgba(125, 227, 255, 0.04);
  --font-display: 'Sora', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Manrope', -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, "Courier New", monospace;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition-fast: 200ms ease;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-deep);
  color: var(--text-silver);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-deep);
  background-image: 
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: center top;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* 顶部细微航天标尺装饰 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  z-index: 1000;
  pointer-events: none;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

a:hover {
  color: #B5F1FF;
}

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

ul, ol {
  list-style: none;
}

/* 布局容器 */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 900px;
}

/* 徽标与遥测标头 */
.telemetry-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: rgba(125, 227, 255, 0.08);
  border: 1px solid var(--hairline-bright);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.telemetry-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.8); }
}

/* 航天 HUD 四角刻度面板 */
.hud-panel {
  position: relative;
  background-color: var(--panel-bg);
  border: 1px solid var(--hairline);
  padding: 32px;
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.hud-panel:hover {
  border-color: var(--hairline-bright);
}

.hud-panel::before,
.hud-panel::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  pointer-events: none;
}

.hud-panel::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--accent-cyan);
  border-left: 2px solid var(--accent-cyan);
}

.hud-panel::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid var(--accent-cyan);
  border-right: 2px solid var(--accent-cyan);
}

/* 导航栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background-color: rgba(11, 18, 32, 0.95);
  border-bottom: 1px solid var(--hairline);
  backdrop-filter: blur(8px);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-white);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1875rem;
  letter-spacing: 0.04em;
}

.logo-graphic {
  width: 38px;
  height: 38px;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  color: var(--text-white);
  font-size: 1.125rem;
  line-height: 1.2;
}

.brand-sub {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  color: var(--text-silver);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  padding: 6px 0;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-cyan);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-cyan);
  transition: width var(--transition-fast);
}

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

.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-cyan);
  color: var(--bg-deep);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.875rem;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent-cyan);
  letter-spacing: 0.05em;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-cta-btn:hover {
  background: #A5EEFF;
  color: var(--bg-deep);
  box-shadow: 0 0 16px rgba(125, 227, 255, 0.4);
  transform: translateY(-1px);
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-align: center;
  line-height: 1;
}

.btn-primary {
  background: var(--accent-cyan);
  color: #0B1220;
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 0 20px rgba(125, 227, 255, 0.2);
}

.btn-primary:hover {
  background: #A8F0FF;
  color: #0B1220;
  box-shadow: 0 0 28px rgba(125, 227, 255, 0.5);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--panel-sub);
  color: var(--text-white);
  border: 1px solid var(--hairline-bright);
}

.btn-secondary:hover {
  background: #1B2B48;
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 10px 18px;
  font-size: 0.875rem;
}

.btn-full {
  width: 100%;
}

/* 主视觉区 (Hero) */
.hero-section {
  padding: 70px 0 60px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-content h1 {
  font-family: var(--font-display);
  font-size: 2.875rem;
  font-weight: 800;
  line-height: 1.22;
  color: var(--text-white);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.hero-content h1 span.cyan {
  color: var(--accent-cyan);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: #C2D3E8;
  font-weight: 600;
  margin-bottom: 16px;
  line-height: 1.4;
}

.hero-intro {
  font-size: 1rem;
  color: var(--text-dim);
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.hero-trust-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-dim);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.trust-item svg {
  width: 16px;
  height: 16px;
  color: var(--accent-cyan);
}

/* 遥测控制仪表板 (Telemetry HUD Card) */
.telemetry-card {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.telemetry-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 20px;
  right: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
}

.card-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--hairline);
  margin-bottom: 20px;
}

.telemetry-card-title {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sys-status-indicator {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 3px 8px;
  background: rgba(125, 227, 255, 0.1);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-sm);
  color: var(--accent-cyan);
}

.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.telemetry-stat {
  background: var(--panel-sub);
  border: 1px solid var(--hairline);
  padding: 14px;
  border-radius: var(--radius-sm);
}

.stat-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1;
}

.stat-value span.unit {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--accent-cyan);
  margin-left: 2px;
}

.stat-sub {
  font-size: 0.6875rem;
  color: var(--accent-cyan);
  margin-top: 4px;
  font-family: var(--font-mono);
}

.node-routing-feed {
  background: rgba(11, 18, 32, 0.8);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.routing-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px dashed rgba(125, 227, 255, 0.1);
}

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

.routing-name {
  color: var(--text-silver);
  display: flex;
  align-items: center;
  gap: 6px;
}

.routing-ping {
  color: var(--accent-cyan);
  font-weight: 700;
}

/* 通用区块标题 */
.section {
  padding: 80px 0;
  position: relative;
}

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: 2.125rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.section-head p {
  font-size: 1.0625rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* 产品核心优势 3 个图文卡片 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-cyan);
}

.feature-icon-wrapper {
  width: 54px;
  height: 54px;
  background: rgba(125, 227, 255, 0.08);
  border: 1px solid var(--hairline-bright);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

.feature-icon-wrapper svg {
  width: 28px;
  height: 28px;
}

.feature-code {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--accent-cyan);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 14px;
  line-height: 1.35;
}

.feature-card p {
  color: var(--text-dim);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.feature-specs {
  border-top: 1px solid var(--hairline);
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  display: flex;
  justify-content: space-between;
}

/* 流媒体与 AI 支持图卡 */
.support-section {
  background: rgba(17, 27, 46, 0.4);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.media-ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-card {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 32px;
  position: relative;
}

.service-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--hairline);
}

.service-card-header h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 10px;
}

.service-card-header svg {
  width: 22px;
  height: 22px;
  color: var(--accent-cyan);
}

.service-badges {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.service-pill {
  background: var(--panel-sub);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: border-color var(--transition-fast);
}

.service-pill:hover {
  border-color: var(--accent-cyan);
}

.service-pill-info {
  display: flex;
  flex-direction: column;
}

.service-pill-name {
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--text-white);
}

.service-pill-desc {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.service-status {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  padding: 2px 6px;
  border-radius: 2px;
  background: rgba(125, 227, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid var(--hairline-bright);
}

/* 套餐价格对比表 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.pricing-card:hover {
  transform: translateY(-4px);
  border-color: var(--hairline-bright);
}

.pricing-card.featured {
  border: 2px solid var(--accent-cyan);
  background: #132038;
  box-shadow: 0 0 30px rgba(125, 227, 255, 0.15);
}

.featured-flag {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-cyan);
  color: var(--bg-deep);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 3px 14px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  white-space: nowrap;
}

.pricing-header {
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 24px;
  margin-bottom: 24px;
}

.plan-tier {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.pricing-card h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 14px;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.currency {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.amount {
  font-family: var(--font-mono);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1;
}

.period {
  font-size: 0.875rem;
  color: var(--text-dim);
}

.plan-desc {
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-top: 10px;
}

.plan-features {
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--text-silver);
  margin-bottom: 14px;
  line-height: 1.4;
}

.plan-features svg {
  width: 16px;
  height: 16px;
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 3px;
}

/* 用户评价 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 28px;
  position: relative;
}

.review-rating {
  color: var(--accent-cyan);
  font-size: 0.875rem;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.9375rem;
  color: var(--text-silver);
  line-height: 1.7;
  margin-bottom: 20px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--hairline);
  padding-top: 16px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--panel-sub);
  border: 1px solid var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-cyan);
  font-size: 0.875rem;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--text-white);
}

.author-role {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

/* 常见问题解答 (FAQ) */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--accent-cyan);
}

.faq-item summary {
  padding: 20px 24px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-white);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.375rem;
  color: var(--accent-cyan);
  transition: transform var(--transition-fast);
}

.faq-item[open] summary::after {
  content: "−";
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 22px;
  color: var(--text-dim);
  font-size: 0.9375rem;
  line-height: 1.75;
  border-top: 1px dashed var(--hairline);
  padding-top: 16px;
}

/* 页脚 Footer */
.site-footer {
  border-top: 1px solid var(--hairline);
  background: #080D17;
  padding: 60px 0 36px;
  position: relative;
}

.footer-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--hairline);
  margin-bottom: 30px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
}

.footer-desc {
  font-size: 0.875rem;
  color: var(--text-dim);
  max-width: 500px;
}

/* 严格限定：页脚只保留这四个标题，打开新页面展示 */
.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 36px;
  margin-bottom: 30px;
}

.footer-nav-link {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-silver);
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.footer-nav-link:hover {
  color: var(--accent-cyan);
  border-color: var(--hairline-bright);
  background: rgba(125, 227, 255, 0.05);
}

.footer-bottom {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #556985;
}

/* 文章页面及子页面样式 */
.article-header {
  padding: 60px 0 30px;
  border-bottom: 1px solid var(--hairline);
  margin-bottom: 40px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.article-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.3;
  margin-bottom: 20px;
}

.article-lead {
  font-size: 1.125rem;
  color: #BBCEDB;
  line-height: 1.75;
}

.article-body {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--text-silver);
}

.article-body h2 {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--text-white);
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hairline);
}

.article-body h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin: 28px 0 12px;
}

.article-body p {
  margin-bottom: 20px;
}

.article-body ul, .article-body ol {
  margin: 0 0 24px 20px;
}

.article-body li {
  margin-bottom: 8px;
  list-style: disc;
}

.article-body blockquote {
  border-left: 3px solid var(--accent-cyan);
  background: var(--panel-sub);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: #B2C5DA;
}

.article-box-callout {
  background: var(--panel-bg);
  border: 1px solid var(--hairline-bright);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 32px 0;
}

.article-box-callout h4 {
  font-family: var(--font-display);
  color: var(--accent-cyan);
  font-size: 1.125rem;
  margin-bottom: 10px;
}

/* 资讯中心列表网格 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.article-card-item {
  background: var(--panel-bg);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

.article-card-item:hover {
  transform: translateY(-3px);
  border-color: var(--accent-cyan);
}

.article-card-item h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--text-white);
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-card-item p {
  color: var(--text-dim);
  font-size: 0.9375rem;
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  border-top: 1px solid var(--hairline);
  padding-top: 14px;
}

/* 响应式媒体查询 (@media) */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .features-grid,
  .pricing-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .media-ai-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-content h1 {
    font-size: 2.25rem;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: auto;
    padding: 16px 0;
    flex-wrap: wrap;
    gap: 16px;
  }

  .nav-menu {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 8px;
    gap: 18px;
  }

  .nav-cta-btn {
    display: none;
  }

  .hero-section {
    padding: 40px 0 40px;
  }

  .hero-content h1 {
    font-size: 1.875rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    min-height: 48px;
  }

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

  .service-badges {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    flex-direction: column;
    gap: 14px;
  }
}